What animal/insect is this?

What animal/insect is this?

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I saw this animal (probably insect) in my house in the Netherlands:

I have searched on the internet but was not able to find what this is, I first thought it was a kind of dragonfly, however there are only two wings which is not usual for a dragonfly. Any suggestions what this is?

It is an insect of family Chrysopidae under the order Neuroptera (net-winged insects). The insects of this family are commonly called Green lacewings.

Neuropterans have large lateral compound eyes, four wings and a generalised pattern of veins.

(Source: Wikipedia)

Identifying morphological features:

Soft-bodied insects with copper-colored eyes, long thread-like antennae, and lacy wings.

Most species are green, but some are brown, especially overwintering adults of certain species

( Reference: Bugguide )

A similar family of lacewing, Hemerobiidae also exists which are brown, have rounded smaller wings and found throughout the world.

Here's a link to wikipedia showing the phylogeny of the Neuroptera as explored using mitochondrial DNA sequences: link .

Why are insects considered the most successful group of animals?

With more than one million described species (and perhaps millions more not yet identified), class Insecta is the most successful group of animals on Earth. In the United States alone, about 91,000 different species have been described, with an estimated 73,000 species not yet described. In fact, the largest numbers of species in the U.S. fall into the four insect Orders: Coleoptera (beetles) at about 23,700 Diptera (flies) at about 19,600 Hymenoptera (ants, bees, wasps) at about 17,500 and Lepidoptera (moths and butterflies) at about 11,500.

More species of insects have been identified than of all other groups of animals combined. What insects lack in size, they make up for in sheer numbers. If we could weigh all the insects in the world, their weight would exceed that of all the remaining terrestrial animals. About 200 million insects are alive at any one time for each human. And why are they successful? Flight is one key to the great success of insects. An animal that can fly can escape many predators, find food and mates, and disperse to new habitats much faster than an animal that must crawl about on the ground.

This is a web preview of the "The Handy Biology Answer Book" app. Many features only work on your mobile device. If you like what you see, we hope you will consider buying. Get the App

Nymph (biology)

In biology, a nymph is the immature form of some invertebrates, particularly insects, which undergoes gradual metamorphosis (hemimetabolism) before reaching its adult stage. [1] Unlike a typical larva, a nymph's overall form already resembles that of the adult, except for a lack of wings (in winged species). In addition, while a nymph moults, it never enters a pupal stage. Instead, the final moult results in an adult insect. [2] Nymphs undergo multiple stages of development called instars.

Nymphs of aquatic insects, as in the Odonata, Ephemeroptera, and Plecoptera, are also called naiads, an Ancient Greek name for mythological water nymphs. Usage of the term 'naiad' is no longer popular among entomologists, who have come to see the distinction between nymph and larva as more of evolutionary grade than a clearly distinct life stage. [4] In older literature, these were sometimes referred to as the heterometabolous insects, as their adult and immature stages live in different environments (terrestrial vs. aquatic). [5]

In fly fishing with artificial flies, this stage of aquatic insects is the basis for an entire series of representative patterns for trout. [6] They account for over half of the over all patterns regularly fished in the United States.

Pollination Of Plants

Insects are responsible for the pollination of about 80% of trees and bushes on the entire planet. Plants invest significant amounts of energy in the formation of attractive blooms full of nectar. Such features are produced primarily to attract insects that act as the chief agents of pollination for most of them. Some of the plant species that have developed such features include Maple, Cherry, Hawthorne, Buckthorn, Lime, and Rowan Berry. The relationship between plants and insects is very complex. Orchids, for example, have co-evolved with insects over millions of years and can only be pollinated by a single species of insect. After the examination of an orchid species found in Madagascar, Charles Darwin predicted that a moth would be discovered in the area with a proboscis that is 11 inches long. Scientists have since found a species of moth in the area that pollinates that orchid, which has a corolla tube with a length of 11 inches. Bees are some of the most important pollinators in the ecosystem. Insects such as bees usually pick up pollen in “baskets” formed by hairs on their abdomens or legs. Without bees, most of the plants we rely on would not be able to produce most of the food we eat. Most of the plants also would not be able to reproduce. Watermelons in Florida or almonds in California probably would not be available if it were not for bees. Declining pollinator populations in some areas have prompted governments to implement pest management and efficient land-use practices to promote pollinator activity. Today authorities understand the need to protect and restore habitats necessary for the sustenance of pollinator diversity.

The sprawling kingdom of bugs

It’s difficult to overstate how many species there are. Indeed, the 7m estimate above is likely a major underestimate. Lots of insects that look alike – so-called “cryptic species” – are distinguishable only by their DNA. There are an average of six cryptic species for every easily recognisable kind, so if we apply this to the original figure, the potential total number of arthropods balloons to 41m.

Even then, each species has multiple kinds of parasites which are mostly specific to just one host species. Many of these parasites are mites which are themselves arthropods. Conservatively allowing just one kind of parasitic mite per host species brings us to a potential total of 82m arthropods. Compared with only around 600,000 vertebrates – animals with backbones – that’s 137 species of arthropod for every vertebrate species.

Astronomical numbers like these caused the physicist-turned-biologist Sir Robert May to observe that “To a good approximation, all [animal] species are insects.” May was good at guessing big numbers – he became the UK Government’s chief scientist – and his quip in 1986 now seems pretty close to the mark.

That’s just diversity though. How many individual insects would be lost in a mass extinction? And how much might they weigh? Their ecological importance will likely depend on both measures. It turns out that insects are so numerous that even though they are small, collectively their weight far outstrips that of the vertebrates.

Perhaps the most celebrated ecologist of his generation, the Harvard ant enthusiast E.O. Wilson estimated that each hectare (2.5 acres) of Amazonian rainforest is inhabited by only a few dozen birds and mammals but well over one billion invertebrates, almost all of which are arthropods.

That hectare would contain about 200kg dry weight of animal tissue, 93% of which would be made up of invertebrate bodies, and a third of that being just ants and termites. This is uncomfortable news for our vertebrate-centric view of the natural world.

The two-banded chameleon (Furcifer balteatus) stalks insects in the Madagascan rainforest. Ryan M. Bolton/Shutterstock

Satanic Leaf-Tailed Gecko

Home to the island of Madagascar, the nocturnal satanic leaf-tailed gecko (Uroplatus phantasticas) spends its days hanging motionless from branches in the rainforest. During the night, it consumes a diet consisting of crickets, flies, spiders, cockroaches, and snails. This gecko is known for its remarkable resemblance to a withered leaf, which helps it stay camouflaged during the day from predators and hidden during the night from prey. Leaf-tailed geckos take aggressive stances when threatened, such as opening their mouths widely and emitting loud cries to ward off threats.

What animal/insect is this? - Biology

Phylum ARTHROPODA : Insects, Spiders, Scorpions, Crabs, Shrimp

General characteristics of phylum:

- found in nearly every habitat

Subphylum UNIRAMIA : Insects, Centipedes, Millipedes

General characteristics of Insects (class ):

- Insects are the most successful life form on the planet: they make up more than half of all living things on Earth

- Some experts suggest that there are more than 10 million insects

- Often occur in incredibly large numbers: on an area with a size of a football field, more than 400,000,000 insect species were found

- Largest order: beetle (125 families, one in every four animal species on this planet is a beetle)

- They are ubiquitous: you can find them everywhere on land, but only very few have colonized the sea (Marine Flies)

- Chitinous (hard) exoskeleton, no bones or a skeleton

- Three pairs of jointed legs (6 legs)

- Compound eyes which contain several thousand lenses leading to a larger field of vision

- One of the most diverse group of animals on Earth:

o Represent more than half of all known living organisms

o Found in almost all environments

o Number of extant species of class insecta: 6-10 million

o Represent over 90% of differing life forms on Earth

- Representatives: fleas, moths, flies, wasps, mosquitoes, grasshopper, beetles, cockroaches, termites, butterflies, ants

- Are mostly solitary, but some insects (bees, ants, termites) are social and live in large, well-organized colonies

- Communication occurs in many different ways: males can sense pheromones of female moths over distances of many kilometers (moths), sounds to attract mates (crickets)

- Cuticle: outer layer, made up of epicutle (thin, waxy, water resistant, no chitin) and procuticle (chitinous, thicker, two layers)

o A. head: pair of sensory antenna, pair of compound eyes, and if present, one to three simple eyes and three sets of modified appendages that form the mouth part

o B. thorax: six segmented legs which are used for several things such as running or swimming, and if present, two or four wings

o C. abdomen: consists of eleven segments, contains most of the digestive, respiratory, excretory and reproductive internal structures

- Only invertebrates who can fly, which is very important for their success: muscles are connected to exoskeletons and are able to contract multiple times for each nerve impulse

- Brain and ventral nerve cord

- Same function as in humans

- Most food is ingested in form of macromolecules, proteins, fats, polysaccharides, and nucleic acids and are broken down into smaller parts like amino acids and simple sugars (digestion)

- Main structure: alimentary canal (long enclosed tube running lengthwise through body) directing food from mouth to anus

- Insects also have paired salivary glands and salivary reservoirs found in the thorax

- Some have extra-oral digestion expelling digestive enzymes onto their food to break it down (flies). This has the advantage that insects can extract more nutrients from the food

- Almost all of the digestion takes place in the gut, which is divided into

Insects Pictures & Facts

All insects belong to the phylum Arthropoda. But unlike other arthropods—like lobsters, spiders, or millipedes—insects have three pairs of jointed legs, segmented bodies, an exoskeleton, one pair of antennae, and (usually) one or two pairs of wings.

Insects live in nearly every habitat, and it’s estimated that there are currently 10 quintillion insects on the globe. So far scientists who study bugs, called entomologists, have named one million insect species but studies estimate that four million are still uncategorized.

The oldest insect fossil—a mandible (or jaw) found in Scotland—is between 408 and 438 million years old. The oldest winged fossil dates back 330 million years ago, suggesting that insects were among the first animals to leave the oceans for land during the Devonian period some 400 million years ago.

Insects are vital to every ecosystem. They pollinate plants, decompose plant and animal matter, and are themselves a source of food. Birds alone are estimated to eat 400 to 500 million tons of insects per year.

Insects And Bugs For Kids

Crafts, activities, drawings to color, facts and information about bugs and insects for kids. Collect and raise bugs in your homeschool carefully! Experiment with insects which won’t harm you nor get loose and harm your house. Observe, but don’t kill bugs which are good for the environment.

About Bugs

Insect Facts for Children

Alien Empire
This special multimedia Web companion to the three-week NATURE miniseries takes you into the bizarre, fascinating world of insects, with amazing graphics, sound and animation, enhanced video, and activities for kids.

Bug Facts
Learn fun facts about ants, wasps, flies and more with this fun site packed full of information.

Florida 4-H Bug Club
Here you will find information that will show you the best places to look for insects and that will help you identify the ones you have already collected.

‘Wicked Bugs’ An Encyclopedia Of Insect Villains
Amy Stewart, who brought us a disturbing slender volume called Wicked Plants has a new and perhaps even more disturbing book called Wicked Bugs. Guest host Linda Wertheimer talks with Stewart about her A-Z list of the most loathsome insects and the havoc they cause.

Wonderful World of Insects
There are well over 1 million different known species of insects in the world, and some experts estimate that there might be as many as 10 million. They are divided up into 32 orders. Did you know that one in every four animals on this planet is a beetle?

Insects photographed in many directions so you can turn them, zoom in, and generally examine them in good detail. The photos are in the Creative Commons, should you need the image.

Bug Arts and Crafts and other Insect Activities for Kids

Bug Fun
Collecting bugs, insect crafts and projects, games and jokes, even bugs as food, from the University of Kentucky Department of Entomology. Make Your Own Compound Eye, for example.

Cookie the Cop
Cook’s Pest Control in Alabama offers a free 16-page insect coloring and puzzle insect worksheets for kids.

Insect Printouts
Printout, label and color these worksheets of outlines of familiar insects: ants, bees, beetles, butterflies, and more. Some show lifecycle.

Insects at Enchanted Learning
Rhymes, crafts, coloring printouts, and quizzes.

Kids Love Bugs!
Make your own bug habitats for some bug observations and learning fun!

Monster Bugs
Insect parts for kids to learn about. Assemble a bug you know or create an entirely new bug out of these drawers full of insect parts.

Insect Games for Children

A game to help you learn to identify some insects while learning which insects are beneficial and interesting facts about others. The game should be played similar to the game bingo. You’ll need a printer to print out the playing cards.

Bugs Learning Games & Videos
Learn about arachnids and insects with fun games and interesting videos from Learning Games for Kids.


Iowa State University’s Tasty Insect Recipes
Disclaimer: The Department of Entomology at Iowa State University is not responsible for gastric distress, allergic reactions, feelings of repulsion, or other problems resulting from the ingestion of foods represented on these pages.

Katerpillars (& Mystery Bugs)
Fun stuff – such as bug-looking recipes for Halloween treats – as well as information about all sorts if bugs from the University of Kentucky Department of Entomology.

Specific Insects


Here’s What Happens Inside You When a Mosquito Bites
The video here shows a brown needle that looks like it’s trying to bury itself among some ice-cubes. It is, in fact, the snout of a mosquito, searching for blood vessels in the flesh of a mouse.

Mosquito Biology
Only female mosquitoes require a blood meal and bite animals – warm or cold-blooded – and birds. Stimuli that influence biting (blood feeding) include a combination of carbon dioxide, temperature, moisture, smell, color, and movement.

Other Insects

Bug Identification
If you’ve found an insect and you don’t know what it is then you can use the on-line Key here to find out to what order your insect belongs. It is a good idea to have the insect in a ‘Bug Box’ whilst you use the Key – it’s much easier than relying on your memory.

European Earwig
Along with biological information about this pest, the authors have tips for making simple traps, one just using a roll of cardboard or a container with bacon grease.

Let’s follow a flea from cradle to grave to learn about her strange, secret flea life-cycle.

Head Lice
Much to many parents’ annoyance, the head louse is a tiny, wingless parasitic insect that lives among human hairs and feeds on extremely small amounts of blood drawn from the scalp. Although they may sound gross, lice (the plural of louse) are a very common problem, especially for kids ages 3 years to 12 years (girls more often than boys).

Creepy, Crawly, Yucky Roach Facts
The Legend of the Headless Cockroach: A cockroach can live a week without its head. The roach only dies because, without a mouth, it can’t drink water and dies of thirst. More weird facts about roaches.

Books to Help You Learn More About Insects

Bugs Rule!
An Introduction to the World of Insects
By Whitney Cranshaw and Richard Redak
Patrick Farenga’s brother-in-law Whitney Cranshaw is not only a cool character, he’s an entomologist at Colorado State University and his new book, Bugs Rule!, is an amazing achievement. Published by Princeton University Press, it is a gorgeous introductory textbook for non-science majors and anyone interested in learning about insect biology, history, and science. Or you can just marvel at the fantastic color photos (830+ and Whit shot most of them!) and diagrams of some weird creatures. Beyond its target market, Pat can see this as a great resource for homeschoolers and alternative schools who have kids who like to seek and explore the world of insects.


Major groups in large type.

Ecdysozoa Edit

  • Nematoda: the round worms. For purists, the name Nemata has priority. [4] Despite their rather limited body form, this is a major phylum, with huge numbers in every conceivable habitat. "More than 15,000 species have been described, of an estimated one million living species". [5] p90 Nematodes include both free-living and parasitic species of plants and animals, including man. Of their large number of species most are likely to be parasites. [6] Nematodes are one of the few life-forms in which each species has a defined number of cells. [7] : small group of nematode-like parasites. They spend their larval stage in the body cavity of arthropods. The adult stage is free, but non-feeding, though it may live for several months. About 250+ species. [5] p85 or Priapula: small phylum of 18 species, with large front section which can be drawn back into the body cavity and extruded for feeding. The larger species are carnivores, seizing prey. The Burgess Shalefauna from the Cambrian shows that the living species are but a remnant of a once much larger group. [2] p358 : another small phylum with an introvert that carries a mouth at the end when extended. [5] p97 Two groups, described as classes in Sørensen. [8] 270 species have been described and many more are expected. [9][10] : a new phylum, discovered in the 1970s. They are microscopic, 100–485μm [11]

Lophotrochozoa Edit

    : 150 species, no certain fossil record. Small, tube-like marine animals with long tentacle-like front part which can be pulled in or out. The mouth is surrounded by a ring of cilia. Has pelagic larvae.
  • Mollusca: a great phylum by number of species and by variety of body forms largely aquatic. Hugely important fossil record from the Lower Cambrian. A major food source for mankind, second only to fish. United by their mantle, the muscular 'foot', the radula (teeth band), and (ancestrally) by the shell. Number of living species estimated as 50,000 to 150,000. Classes: lesser classes are the Aplacophora, Monoplacophora, and Polyplacophora. Major classes are the Gastropods, Cephalopods, Bivalves and Scaphopods. A familiarity with bivalve evolution is valuable for identifying strata, so common are their fossils. Larvae are trochophores or veligers (many gastropods & bivalves) glochidium (some freshwater bivalves).
  • Annelida: important phylum of both aquatic and terrestrial segmented worms. At least 15,000 living species. Fossil record weak, evolutionary history not well known. Classes: Polychaeta (marine worms), Oligochaeta (earthworms), Hirudinea (leeches). Larvae are trochophores or nectochaeta.
  • Bryozoa, also known as the Ectoprocta: An aquatic phylum with a huge fossil record (one of the most common in the Palaeozoic). Still fairly common, though little known to the public. There are now 5000 species, most of which build calcareous skeletons. They are almost all colonial, and all their zooids are clones. : A very small phylum, with 12 species. Live on the sea floor (benthic), build chitinous tubes covered with mud or sand or bore into calcareous rock. Usually have horeshoe-shaped lophophores with ciliated tentacles. or Nemertini: flat, unsegmented ribbon worms, mostly aquatic. They have also been called Rhynchocoela or proboscis worms. About 1400 species. There have been reports of extremely long ribbon worms, unconfirmed. Larvae are pilidiums.
  • Platyhelminthes: the flatworms. Classes: Turbellaria: free-living and aquatic (4,500 species) Trematoda: parasitic flukes of molluscs and vertebrates (

Deuterostomia Edit

    : A group of marine benthic worms consisting of 3 main lineages defined by a blind gut, a net-like nervous system, and lack of nephridia. The position of this group on the tree of life is currently debated as either the sister group to all other Bilateria [18] or as sister to all other Deuterostomia[19]
      : Benthic marine worms, often found in the deeps sea, sizes between 2–20cm. [20] : very small marine worms (usually under 2 millimeters in length) found in marine and brackish waters usually living in the benthos. : small marine worms.
    • Echinodermata: One of the most important marine phyla, with radial symmetry. 17,000 living species, which all live in the ocean, mostly on the sea bed. This is the largest phylum which is entirely marine. The main classes are quite well-known. The Crinoids are 'sea lilies', a remnant of a once great clade the Asterozoa are the starfish, major predators of shell-fish, and the brittle stars. The Echinozoa are the sea urchins, sand dollars and the sea cucumbers. There are also some extinct groups. The echinoderm fossil record is extensive. Larvae are varied and planktonic: pluteus (echinoids) dipleurula, then bipinneria then brachiolaria (starfish) ophiopluteus (brittle stars) doliolaris (sea cucumbers). : The Chordates' closest relatives, three groups which are brought together in most modern taxonomies.
        : the acorn worms. A small, well-defined group with 70 marine species. Relatives of the chordates.
    • †Graptolites: fossil colonial animals. : a small sub-phylum of two or three marine groups which usually build tubes, and form small colonies on sea floor. They have a long fossil record. Zooids carry prominent ciliated tentacles.
      • : the tunicates. : the lancelates, such as the former Amphioxus. or Vertebrata: the vertebrates. About 60,000 species recognised. The term vertebrate usually now excludes the lamprey and hagfish, which are included in the broader term craniate.

      Other Bilateria phyla Edit

        : a recently discovered group of tiny animals which live on lobsters. One genus and three species so far. : jaw worms, a small phylum of small marine animals (100 species). Hermaphrodite, live in muddy benthic habitat, scape food from particles with their jaw. : arrow worms. Only about 120 species, but huge numbers in the plankton some are benthic. They are predators, up to 12 cm long. They use a neurotoxin to subdue prey. : a small phylum of parasites of marine invertebrates.

      Non-Bilateria Edit

        : a large phylum, with an extensive fossil record. 10,000 living species. Aquatic, mainly marine, five classes:
          (sea anemones, corals) (true jellyfish) (box jellies) (stalked jellyfish). : the hydroids
          : Two described species: Trichoplax adhaerens, discovered in 1883 and ```Hoilungia hongkongensis```. [22] Small, about 2mm, aquatic, eats bacteria and single-celled algae & protozoa.
          : sponges. 5000 species, aquatic mainly marine but several fresh water species, Have collared cells with long cilia. Sessile, have cell differentiation. [23] Skeleton are of spongin, or are calcareous CaCO3, or silicious SiO2.

        At least 21 phyla are exclusively aquatic, with several others in quasi-aquatic habitats on land. None are entirely terrestrial. This is testimony to the importance of water for life, and to the sea in particular. It is fairly certain that all phyla originated in the sea or, at any rate, in water. Most made their first showing in the Cambrian, or in the Ediacaran. Most of the soft-bodied phyla have left few fossils.

        Phyla may be grouped according to evidence about their evolutionary relationships. The list above puts similar groups together.

        This kind of megataxonomy is becoming more convincing as DNA sequence analysis proceeds through the phyla. Some entirely fossil groups are still placed where they are on anatomy and commonsense rather than hard molecular evidence. The trilobites are a good example. Their position in the Arthropoda is based on not much more than their bilateral symmetry and an exoskeleton. These groupings are discussed further in the references to this page. [1] [2] [16]

        This table has the advantage of being sortable. The terminology differs in places from the above descriptions. Also, by listing living species only for most phyla, those with huge fossil records (like Bryozoa and Brachiopods) are lower in the order despite being important aquatic forms in the Palaeozoic era.

        Phylum Meaning Common name Distinguishing characteristic Species described
        Acanthocephala Thorny headed worms Thorny-headed worms Reversible spiny proboscis. Now usually included in Rotifera. 7003132900000000000♠ approx. 1,329 extant (= living)
        Acoelomorpha Without gut Acoels No mouth or alimentary canal (alimentary canal = digestive tract in digestive system) 483
        Annelida Little ring Segmented worms Multiple circular segment 20,481+ extant
        Arthropoda Jointed foot Arthropods Chitin exoskeleton 7006110673800000000♠ 1,106,738+
        Brachiopoda Arm foot Lamp shells Lophophore and pedicle 11,082 extant
        Bryozoa Moss animals Moss animals, sea mats Lophophore, no pedicle, ciliated tentacles 5,609 extant
        Chaetognatha Longhair jaw Arrow worms Chitinous spines either side of head, fins 132 extant
        Chordata With a cord Chordates Hollow dorsal nerve cord, notochord, pharyngeal slits, endostyle, post-anal tail 65,000+
        Cnidaria Stinging nettle Coelenterates Nematocysts (stinging cells) 11,791
        Ctenophora Comb bearer Comb jellies Eight "comb rows" of fused cilia 210 extant
        Cycliophora Wheel carrying Symbion Circular mouth surrounded by small cilia 2
        Echinodermata Spiny skin Echinoderms Fivefold radial symmetry in living forms, mesodermal calcified spines 10,832
        Entoprocta Inside anus Goblet worm Anus inside ring of cilia 171
        Gastrotricha Hair stomach Meiofauna Two terminal adhesive tubes 851
        Gnathostomulida Jaw orifice Jaw worms 101
        Hemichordata Half cord Acorn worms, pterobranchs Stomochord in collar, pharyngeal slits 139
        Kinorhyncha Motion snout Mud dragons Eleven segments, each with a dorsal plate 188
        Loricifera Corset bearer Brush heads Umbrella-like scales at each end 27
        Micrognathozoa Tiny jaw animals Accordion-like extensible thorax. Newly discovered close to Rotifers. 7000100000000000000♠ 1
        Mollusca Soft Mollusks / molluscs Muscular foot and mantle round shell 85,844
        Nematoda Thread like Round worms Round cross section, keratin cuticle 3,452
        Nematomorpha Thread form Horsehair worms 361
        Nemertea A sea nymph Ribbon worms 1,351
        Onychophora Claw bearer Velvet worms Legs tipped by chitinous claws 205
        Orthonectida Straight swim Single layer of ciliated cells surrounding a mass of sex cells 25
        Phoronida Zeus's mistress Horseshoe worms U-shaped gut 19
        Placozoa Plate animals 2
        Platyhelminthes Flat worms Flat worms 18,089
        Porifera* Pore bearer Sponges Perforated interior wall 9,049
        Priapulida Little Priapus 22
        Rhombozoa Lozenge animal Single axial cell form front to back, surrounded by ciliated cells 7001750000000000000♠ 75
        Rotifera Wheel bearer Rotifers crown of cilia at front 2,011
        Sipuncula Small tube Peanut worms Mouth surrounded by invertible tentacles 205
        Tardigrada Slow step Water bears Four segmented body and head 1,018
        Xenoturbellida Strange flatworm Ciliated deuterostome 4
        Total: 35 1,356,899 and more species being discovered every day
        Protostome Bilateria
        Others (Radiata or Parazoa)

        This list is to help when you read older literature which may use out-of-date terms.


  1. Cleve

    There is something in this. I will know, thank you very much for the information.

  2. Darcy

    whether there are analogues?

  3. Mausho

    Well, well ... it will be necessary to take a closer look at this area :)

  4. Digar

    What a curious question

  5. Talmaran

    can anyone have a link to good quality?

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