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id="content" class="md-content"> <div class="bg-navy-dark text-white text-center pt-30 pb-20"> <div class="container"> <script type="application/ld+json"> { "@context" : "https://schema.org", "@type" : "BreadcrumbList", "itemListElement" : [ { "@type" : "ListItem", "position" : 1, "item" : { "@id" : "https://www.britannica.com/browse/Science", "name": "Science" } } , { "@type" : "ListItem", "position" : 2, "item" : { "@id" : "https://www.britannica.com/browse/Bugs-Mollusks-Invertebrates", "name": "Bugs, Mollusks & Other Invertebrates" } } ] } </script> <nav class="breadcrumb justify-content-center"> <span class="breadcrumb-item "> <a href="/" class="link-white">Home</a> </span> <span class="breadcrumb-item "> <a class="link-white" href="/browse/Science">Science</a> </span> <span class="breadcrumb-item "> <a class="link-white" href="/browse/Bugs-Mollusks-Invertebrates">Bugs, Mollusks & Other Invertebrates</a> </span> </nav> <h1 class="font-serif mt-30 mb-20">Bugs, Mollusks & Other Invertebrates, VOL-ZOR</h1> <div class="font-serif grid"> <div class="col-sm-70 col-sm-offset-15"> Yet, in addition to being critically important鈥攂ecause they naturally recycle decaying matter鈥攊n maintaining balance within the food chain, bugs can also be fascinating creatures, whether in regard to the water strider's ability to run across the surface of water or the assassin bugs' varied and creative means of catching and killing their prey. Mollusks, another group of invertebrates, get less of a bad rap. Their ranks include nearly 100,000 described species of soft-bodied animals that are usually wholly or partly enclosed in a calcium carbonate shell; examples include snails, clams, oysters, squids, and octopuses.</div> </div> <a class="link-white font-weight-bold d-inline-block mt-30" href="/browse/Bugs-Mollusks-Invertebrates">Back To Bugs, Mollusks & Other Invertebrates Page</a> </div> </div> <div class="container mt-30"> <h2 class="label my-30">Bugs, Mollusks & Other Invertebrates Encyclopedia Articles By Title</h2> <div class="grid top g-10 mb-40"> <div class="col-33 col-sm-20 col-md-16 col-lg-10"> <div class="border shadow p-10 text-center "> <a class="font-weight-bold font-14 " href="/browse/Bugs-Mollusks-Invertebrates/1">ABA-CED</a> </div> </div> <div class="col-33 col-sm-20 col-md-16 col-lg-10"> <div class="border shadow p-10 text-center "> <a class="font-weight-bold font-14 " href="/browse/Bugs-Mollusks-Invertebrates/2">CEN-EAS</a> </div> </div> <div class="col-33 col-sm-20 col-md-16 col-lg-10"> <div class="border shadow p-10 text-center "> <a class="font-weight-bold font-14 " href="/browse/Bugs-Mollusks-Invertebrates/3">ECH-HET</a> </div> </div> <div class="col-33 col-sm-20 col-md-16 col-lg-10"> <div class="border shadow p-10 text-center "> <a class="font-weight-bold font-14 " href="/browse/Bugs-Mollusks-Invertebrates/4">HIS-MAY</a> </div> </div> <div class="col-33 col-sm-20 col-md-16 col-lg-10"> <div class="border shadow p-10 text-center "> <a class="font-weight-bold font-14 " href="/browse/Bugs-Mollusks-Invertebrates/5">MEA-PLE</a> </div> </div> <div class="col-33 col-sm-20 col-md-16 col-lg-10"> <div class="border shadow p-10 text-center "> <a class="font-weight-bold font-14 " href="/browse/Bugs-Mollusks-Invertebrates/6">PLE-SKI</a> </div> </div> <div class="col-33 col-sm-20 col-md-16 col-lg-10"> <div class="border shadow p-10 text-center "> <a class="font-weight-bold font-14 " href="/browse/Bugs-Mollusks-Invertebrates/7">SLI-VIN</a> </div> </div> <div class="col-33 col-sm-20 col-md-16 col-lg-10"> <div class="border shadow p-10 text-center bg-orange"> <a class="font-weight-bold font-14 link-white pe-none" href="/browse/Bugs-Mollusks-Invertebrates/8">VOL-ZOR</a> </div> </div> </div> <div class="grid g-20"> <div class="col-100 col-sm-33 col-md-25"> <div class="card h-100"> <div class="card-body"> <a href="/animal/volute" class="font-weight-bold font-16"><invertedtitle>volute</invertedtitle></a> <div class="font-serif mt-10 font-14"> volute, any marine snail of the family Volutidae (subclass Prosobranchia of the class Gastropoda). Most species...... </div> </div> </div> </div> <div class="col-100 col-sm-33 col-md-25"> <div class="card h-100"> <div class="card-body"> <a href="/animal/walkingstick" class="font-weight-bold font-16"><invertedtitle>walking stick</invertedtitle></a> <div class="font-serif mt-10 font-14"> walking stick, (order Phasmida, or Phasmatodea), any of about 3,000 species of slow-moving insects that are green...... </div> </div> </div> </div> <div class="col-100 col-sm-33 col-md-25"> <div class="card h-100"> <div class="card-body"> <a href="/animal/wandering-spider" class="font-weight-bold font-16"><invertedtitle>wandering spider</invertedtitle></a> <div class="font-serif mt-10 font-14"> wandering spider, (family Ctenidae), any member of the family Ctenidae (order Araneida), a small group of large...... </div> </div> </div> </div> <div class="col-100 col-sm-33 col-md-25"> <div class="card h-100"> <div class="card-body"> <a href="/animal/wasp" class="font-weight-bold font-16"><invertedtitle>wasp</invertedtitle></a> <div class="font-serif mt-10 font-14"> wasp, any member of a large group of insects in the order Hymenoptera, suborder Apocrita, some of which are stinging....... </div> </div> </div> </div> <div class="col-100 col-sm-33 col-md-25"> <div class="card h-100"> <div class="card-body"> <a href="/animal/water-beetle" class="font-weight-bold font-16"><invertedtitle>water beetle</invertedtitle></a> <div class="font-serif mt-10 font-14"> water beetle, any of several thousand species of aquatic beetles (order Coleoptera), including members of the families...... </div> </div> </div> </div> <div class="col-100 col-sm-33 col-md-25"> <div class="card h-100"> <div class="card-body"> <a href="/animal/water-boatman" class="font-weight-bold font-16"><invertedtitle>water boatman</invertedtitle></a> <div class="font-serif mt-10 font-14"> water boatman, (family Corixidae), any of more than 300 species of insects in the true bug order, Heteroptera,...... </div> </div> </div> </div> <div class="col-100 col-sm-33 col-md-25"> <div class="card h-100"> <div class="card-body"> <a href="/animal/water-flea" class="font-weight-bold font-16"><invertedtitle>water flea</invertedtitle></a> <div class="font-serif mt-10 font-14"> water flea, any member of the crustacean order Anomopoda (class Branchiopoda), a large group containing about 450...... </div> </div> </div> </div> <div class="col-100 col-sm-33 col-md-25"> <div class="card h-100"> <div class="card-body"> <a href="/animal/water-scavenger-beetle" class="font-weight-bold font-16"><invertedtitle>water scavenger beetle</invertedtitle></a> <div class="font-serif mt-10 font-14"> water scavenger beetle, any of the approximately 3,200 species of the predominately aquatic insect superfamily...... </div> </div> </div> </div> <div class="col-100 col-sm-33 col-md-25"> <div class="card h-100"> <div class="card-body"> <a href="/animal/water-scorpion" class="font-weight-bold font-16"><invertedtitle>water scorpion</invertedtitle></a> <div class="font-serif mt-10 font-14"> water scorpion, any of the approximately 150 species of aquatic invertebrates of the family Nepidae (order Hemiptera)....... </div> </div> </div> </div> <div class="col-100 col-sm-33 col-md-25"> <div class="card h-100"> <div class="card-body"> <a href="/animal/water-spider" class="font-weight-bold font-16"><invertedtitle>water spider</invertedtitle></a> <div class="font-serif mt-10 font-14"> water spider, (Argyroneta aquatica), species of spider that is known for its underwater silk web, which resembles...... </div> </div> </div> </div> <div class="col-100 col-sm-33 col-md-25"> <div class="card h-100"> <div class="card-body"> <a href="/animal/water-strider" class="font-weight-bold font-16"><invertedtitle>water strider</invertedtitle></a> <div class="font-serif mt-10 font-14"> water strider, any insect of the family Gerridae (order Heteroptera), which numbers about 350 species. Water striders,...... </div> </div> </div> </div> <div class="col-100 col-sm-33 col-md-25"> <div class="card h-100"> <div class="card-body"> <a href="/animal/water-treader" class="font-weight-bold font-16"><invertedtitle>water treader</invertedtitle></a> <div class="font-serif mt-10 font-14"> water treader, any insect of the approximately 30 species of the family Mesoveliidae (order Heteroptera). These...... </div> </div> </div> </div> <div class="col-100 col-sm-33 col-md-25"> <div class="card h-100"> <div class="card-body"> <a href="/animal/webspinner" class="font-weight-bold font-16"><invertedtitle>webspinner</invertedtitle></a> <div class="font-serif mt-10 font-14"> webspinner, (order Embioptera), any of about 170 species of insects that are delicate, are yellow or brown in colour,...... </div> </div> </div> </div> <div class="col-100 col-sm-33 col-md-25"> <div class="card h-100"> <div class="card-body"> <a href="/animal/weevil" class="font-weight-bold font-16"><invertedtitle>weevil</invertedtitle></a> <div class="font-serif mt-10 font-14"> weevil, (family Curculionidae), true weevil of the insect order Coleoptera (beetles and weevils). Curculionidae...... </div> </div> </div> </div> <div class="col-100 col-sm-33 col-md-25"> <div class="card h-100"> <div class="card-body"> <a href="/animal/wentletrap" class="font-weight-bold font-16"><invertedtitle>wentletrap</invertedtitle></a> <div class="font-serif mt-10 font-14"> wentletrap, any marine snail of the family Epitoniidae (subclass Prosobranchia of the class Gastropoda), in which...... </div> </div> </div> </div> <div class="col-100 col-sm-33 col-md-25"> <div class="card h-100"> <div class="card-body"> <a href="/animal/western-honeybee" class="font-weight-bold font-16"><invertedtitle>western honeybee</invertedtitle></a> <div class="font-serif mt-10 font-14"> western honeybee, (Apis mellifera), economically important species of honeybee valued for its pollination services...... </div> </div> </div> </div> <div class="col-100 col-sm-33 col-md-25"> <div class="card h-100"> <div class="card-body"> <a href="/animal/whale-louse" class="font-weight-bold font-16"><invertedtitle>whale louse</invertedtitle></a> <div class="font-serif mt-10 font-14"> whale louse, (family Cyamidae), any of a small group of highly specialized peracaridan crustaceans (order Amphipoda)...... </div> </div> </div> </div> <div class="col-100 col-sm-33 col-md-25"> <div class="card h-100"> <div class="card-body"> <a href="/topic/Whats-the-difference-between-moths-and-butterflies" class="font-weight-bold font-16"><invertedtitle>What鈥檚 the difference between moths and butterflies?</invertedtitle></a> <div class="font-serif mt-10 font-14"> Most people are generally familiar with moths and butterflies. You might recognize a beautiful butterfly in a garden...... </div> </div> </div> </div> <div class="col-100 col-sm-33 col-md-25"> <div class="card h-100"> <div class="card-body"> <a href="/animal/whelk" class="font-weight-bold font-16"><invertedtitle>whelk</invertedtitle></a> <div class="font-serif mt-10 font-14"> whelk, any marine snail of the family Buccinidae (subclass Prosobranchia of the class Gastropoda), or a snail having...... </div> </div> </div> </div> <div class="col-100 col-sm-33 col-md-25"> <div class="card h-100"> <div class="card-body"> <a href="/animal/whip-scorpion" class="font-weight-bold font-16"><invertedtitle>whip scorpion</invertedtitle></a> <div class="font-serif mt-10 font-14"> whip scorpion, (order Uropygi, sometimes Thelyphonida), any of approximately 105 species of the arthropod class...... </div> </div> </div> </div> <div class="col-100"> <span class="adm-1"></span> </div> <div class="col-100 col-sm-33 col-md-25"> <div class="card h-100"> <div class="card-body"> <a href="/animal/whipworm" class="font-weight-bold font-16"><invertedtitle>whipworm</invertedtitle></a> <div class="font-serif mt-10 font-14"> whipworm, any of certain worms of the genus Trichuris, phylum Nematoda, especially T. trichiura, that are parasitic...... </div> </div> </div> </div> <div class="col-100 col-sm-33 col-md-25"> <div class="card h-100"> <div class="card-body"> <a href="/animal/whirligig-beetle" class="font-weight-bold font-16"><invertedtitle>whirligig beetle</invertedtitle></a> <div class="font-serif mt-10 font-14"> whirligig beetle, (family Gyrinidae), any of about 700 species of beetles (insect order Coleoptera) that are widespread...... </div> </div> </div> </div> <div class="col-100 col-sm-33 col-md-25"> <div class="card h-100"> <div class="card-body"> <a href="/animal/white-butterfly" class="font-weight-bold font-16"><invertedtitle>white butterfly</invertedtitle></a> <div class="font-serif mt-10 font-14"> white butterfly, (subfamily Pierinae), any of a group of butterflies in the family Pieridae (order Lepidoptera)...... </div> </div> </div> </div> <div class="col-100 col-sm-33 col-md-25"> <div class="card h-100"> <div class="card-body"> <a href="/animal/whitefly" class="font-weight-bold font-16"><invertedtitle>whitefly</invertedtitle></a> <div class="font-serif mt-10 font-14"> whitefly, any sap-sucking member of the insect family Aleyrodidae (order Homoptera). The nymphs, resembling scale...... </div> </div> </div> </div> <div class="col-100 col-sm-33 col-md-25"> <div class="card h-100"> <div class="card-body"> <a href="/animal/window-winged-moth" class="font-weight-bold font-16"><invertedtitle>window-winged moth</invertedtitle></a> <div class="font-serif mt-10 font-14"> window-winged moth, (family Thyrididae), any of a group of tropical moths (order Lepidoptera) that are generally...... </div> </div> </div> </div> <div class="col-100 col-sm-33 col-md-25"> <div class="card h-100"> <div class="card-body"> <a href="/animal/wireworm-millipede" class="font-weight-bold font-16"><invertedtitle>wireworm</invertedtitle></a> <div class="font-serif mt-10 font-14"> wireworm, any of certain millipede (q.v.)... </div> </div> </div> </div> <div class="col-100 col-sm-33 col-md-25"> <div class="card h-100"> <div class="card-body"> <a href="/animal/wolf-spider" class="font-weight-bold font-16"><invertedtitle>wolf spider</invertedtitle></a> <div class="font-serif mt-10 font-14"> wolf spider, (family Lycosidae), any member of the spider family Lycosidae (order Araneida), a large and widespread...... </div> </div> </div> </div> <div class="col-100 col-sm-33 col-md-25"> <div class="card h-100"> <div class="card-body"> <a href="/animal/wood-louse" class="font-weight-bold font-16"><invertedtitle>wood louse</invertedtitle></a> <div class="font-serif mt-10 font-14"> wood louse, either of two related terrestrial crustaceans, the pill bug (q.v.) and the sow bug... </div> </div> </div> </div> <div class="col-100 col-sm-33 col-md-25"> <div class="card h-100"> <div class="card-body"> <a href="/animal/wood-wasp" class="font-weight-bold font-16"><invertedtitle>wood wasp</invertedtitle></a> <div class="font-serif mt-10 font-14"> wood wasp, primitive insect belonging to any of three families in the suborder Symphyta (order Hymenoptera): Xiphydriidae,...... </div> </div> </div> </div> <div class="col-100 col-sm-33 col-md-25"> <div class="card h-100"> <div class="card-body"> <a href="/animal/woolly-bear" class="font-weight-bold font-16"><invertedtitle>woolly bear</invertedtitle></a> <div class="font-serif mt-10 font-14"> woolly bear, Caterpillar of a tiger moth. The larva of the Isabella tiger moth (Isia isabella), known as the banded...... </div> </div> </div> </div> <div class="col-100 col-sm-33 col-md-25"> <div class="card h-100"> <div class="card-body"> <a href="/animal/worm" class="font-weight-bold font-16"><invertedtitle>worm</invertedtitle></a> <div class="font-serif mt-10 font-14"> worm, any of various unrelated invertebrate animals that typically have soft, slender, elongated bodies. Worms...... </div> </div> </div> </div> <div class="col-100 col-sm-33 col-md-25"> <div class="card h-100"> <div class="card-body"> <a href="/animal/worm-shell" class="font-weight-bold font-16"><invertedtitle>worm shell</invertedtitle></a> <div class="font-serif mt-10 font-14"> worm shell, any marine snail of the family Vermetidae (subclass Prosobranchia, class Gastropoda). The shell of...... </div> </div> </div> </div> <div class="col-100 col-sm-33 col-md-25"> <div class="card h-100"> <div class="card-body"> <a href="/animal/Worthenia" class="font-weight-bold font-16"><invertedtitle>Worthenia</invertedtitle></a> <div class="font-serif mt-10 font-14"> Worthenia, genus of extinct gastropods (snails) preserved as common fossils in rocks of Devonian to Triassic age...... </div> </div> </div> </div> <div class="col-100 col-sm-33 col-md-25"> <div class="card h-100"> <div class="card-body"> <a href="/animal/yucca-moth" class="font-weight-bold font-16"><invertedtitle>yucca moth</invertedtitle></a> <div class="font-serif mt-10 font-14"> yucca moth, (genus Tegeticula), any of four species of insects of the Prodoxidae family of moths (order Lepidoptera)....... </div> </div> </div> </div> <div class="col-100 col-sm-33 col-md-25"> <div class="card h-100"> <div class="card-body"> <a href="/animal/zebra-mussel" class="font-weight-bold font-16"><invertedtitle>zebra mussel</invertedtitle></a> <div class="font-serif mt-10 font-14"> zebra mussel, a species of tiny mussels (genus Dreissena) that are prominent freshwater pests. They proliferate...... </div> </div> </div> </div> <div class="col-100 col-sm-33 col-md-25"> <div class="card h-100"> <div class="card-body"> <a href="/animal/zebra-swallowtail-butterfly" class="font-weight-bold font-16"><invertedtitle>zebra swallowtail butterfly</invertedtitle></a> <div class="font-serif mt-10 font-14"> zebra swallowtail butterfly, (Eurytides marcellus), species of butterfly in the family Papilionidae (order Lepidoptera)...... </div> </div> </div> </div> <div class="col-100 col-sm-33 col-md-25"> <div class="card h-100"> <div class="card-body"> <a href="/animal/zoanthid" class="font-weight-bold font-16"><invertedtitle>zoanthid</invertedtitle></a> <div class="font-serif mt-10 font-14"> zoanthid, any member of the order Zoanthidea, a group of about 300 species of marine animals of the class Anthozoa...... </div> </div> </div> </div> <div class="col-100 col-sm-33 col-md-25"> <div class="card h-100"> <div class="card-body"> <a href="/animal/zorapteran" class="font-weight-bold font-16"><invertedtitle>zorapteran</invertedtitle></a> <div class="font-serif mt-10 font-14"> zorapteran, (order Zoraptera), any of a small group of about 30 species of insects found on every continent except...... </div> </div> </div> </div> </div> <h2 class="label my-30">Bugs, Mollusks & Other Invertebrates Encyclopedia Articles By Title</h2> <div class="grid bottom g-10 mb-40"> <div class="col-33 col-sm-20 col-md-16 col-lg-10"> <div class="border shadow p-10 text-center "> <a class="font-weight-bold font-14 " href="/browse/Bugs-Mollusks-Invertebrates/1">ABA-CED</a> </div> </div> <div class="col-33 col-sm-20 col-md-16 col-lg-10"> <div class="border shadow p-10 text-center "> <a class="font-weight-bold font-14 " href="/browse/Bugs-Mollusks-Invertebrates/2">CEN-EAS</a> </div> </div> <div class="col-33 col-sm-20 col-md-16 col-lg-10"> <div class="border shadow p-10 text-center "> <a class="font-weight-bold font-14 " href="/browse/Bugs-Mollusks-Invertebrates/3">ECH-HET</a> </div> </div> <div class="col-33 col-sm-20 col-md-16 col-lg-10"> <div class="border shadow p-10 text-center "> <a class="font-weight-bold font-14 " href="/browse/Bugs-Mollusks-Invertebrates/4">HIS-MAY</a> </div> </div> <div class="col-33 col-sm-20 col-md-16 col-lg-10"> <div class="border shadow p-10 text-center "> <a class="font-weight-bold font-14 " href="/browse/Bugs-Mollusks-Invertebrates/5">MEA-PLE</a> </div> </div> <div class="col-33 col-sm-20 col-md-16 col-lg-10"> <div class="border shadow p-10 text-center "> <a class="font-weight-bold font-14 " href="/browse/Bugs-Mollusks-Invertebrates/6">PLE-SKI</a> </div> </div> <div class="col-33 col-sm-20 col-md-16 col-lg-10"> <div class="border shadow p-10 text-center "> <a class="font-weight-bold font-14 " href="/browse/Bugs-Mollusks-Invertebrates/7">SLI-VIN</a> </div> </div> <div class="col-33 col-sm-20 col-md-16 col-lg-10"> <div class="border shadow p-10 text-center bg-orange"> <a class="font-weight-bold font-14 link-white pe-none" href="/browse/Bugs-Mollusks-Invertebrates/8">VOL-ZOR</a> </div> </div> </div> <nav class="breadcrumb my-30"> <span class="breadcrumb-item "> <a href="/" class="">Home</a> </span> <span class="breadcrumb-item "> <a class="" href="/browse/Science">Science</a> </span> <span class="breadcrumb-item "> <a class="" href="/browse/Bugs-Mollusks-Invertebrates">Bugs, Mollusks & Other Invertebrates</a> </span> </nav> </div></div> </div> </main> <div id="md-footer"></div> <footer class="md-footer footer-wrapper hide-on-edit"> <div class="footer-bck"> <DIV class="marketing-FOOTER_NEWSLETTER marketing-content" data-marketing-id="FOOTER_NEWSLETTER"><div class="md-footer-newsletter-form pt-10 mb-30 mx-15 mx-sm-120"> <div class="font-18"> <strong>History at your fingertips –</strong> Sign up here to see what happened On This Day, every day in your inbox! </div> <div class="p-30"> <div class="newsletter-form-container"> <form class="newsletter-form" method="post" action="/newsletter-subscription/EB_ON_THIS_DAY"> <div class="form-group grid d-flex justify-content-center"> <div class="col-sm-50 col-100"> <label class="sr-only" for="enter-your-email">Enter your email</label> <input id="enter-your-email" type="email" name="email" class="form-control font-18 p-10" placeholder="Enter your email" pattern="[a-z0-9._%+-]+@[a-z0-9.-]+\.[a-z]{2,4}$" required> </div> <div class="col-sm-auto col-100 mt-5 mt-sm-0"> <button type="submit" class="btn btn-outline-white" style="width: 100%; height:100%;">Subscribe</button> </div> </div> <div class="text-white pt-30 text-opacity"> By signing up for this email, you are agreeing to news, offers, and information from Encyclopaedia Britannica.<br> Click here to view our <a class="link-white text-decoration-underline" href="https://corporate.britannica.com/privacy-policy2" target="_blank" rel="noopener nofollow">Privacy Notice</a>. 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