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Entomology 101 Orders of Insects II David J. Shetlar, Ph.D. The “BugDoc” The Ohio State University, OARDC & OSU Extension Columbus, OH © Sept, 2009, D.J.

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Presentation on theme: "Entomology 101 Orders of Insects II David J. Shetlar, Ph.D. The “BugDoc” The Ohio State University, OARDC & OSU Extension Columbus, OH © Sept, 2009, D.J."— Presentation transcript:

1 Entomology 101 Orders of Insects II David J. Shetlar, Ph.D. The “BugDoc” The Ohio State University, OARDC & OSU Extension Columbus, OH © Sept, 2009, D.J. Shetlar, all rights reserved

2 Orders of Insects (complete metamorphosis) Coleoptera – beetles Neuroptera - dobsonfly, lacewings Hymenoptera - sawflies, bees, wasps Tricoptera - caddisflies Lepidoptera - butterflies & moths Siphonaptera - fleas Diptera - gnats, mosquitoes, flies

3 Order Coleoptera (=sheath wing) beetles Largest order in animal kingdom Chewing mouthparts Complex metamorphosis 4 wings Forewings (elytra) are hardened, opaque, meet in the midline of back Feed on plants, organic matter, stored products; or predatory

4 Coleoptera (sheath wing) (beetles & weevils; >300K spp.) [front wings shelllike, usually covering abdomen; hind wings membranous, folded under forewings; antennae variable, but evident; chewing mouthparts; larvae variously shaped - elongate, grublike, etc.] Ground beetle Ground beetle larva Passalid beetle

5 Coleoptera (beetles & weevils; >300K spp.) Lady beetle Rove beetle Bluegrass billbug adult & larva May/June beetle

6 Cicada Parasite Beetle


8 “Caterpillar Hunter” – a ground beetle

9 Stag beetle

10 “Lighteningbug” or “Firefly” – Lampyrid beetle

11 Longhorn beetle

12 Emerald Ash Borer

13 Acorn weevil

14 Lady Beetle life stages: egg, larva, pupa & adult

15 Bluegrass billbug life stages Japanese beetle life stages

16 Order Neuroptera (=nerve wing) lacewings & dobsonflies, antlions, owlflies Wings Membranous, 2 pairs Approximately equal size Many veins & cross-veins Chewing mouthparts, sometimes larvae with sucking mandibles Complex metamorphosis Members of interest are predators

17 Neuroptera (=nerve wing) (dobsonfly, lacewings, antlions; 5.5K spp.) [two pair wings with numerous veins, elongate larvae with elongate mandibles, larvae & adults usually predatory] Green lacewing adult Eggs Cocoon Larva

18 OwlflyDobsonfly Mantisfly Brown Lacewing Snakefly

19 Antlion pits, larva (=doodlebug) & adult

20 Order Hymenoptera (=marriage wing) bees, wasps, sawflies, ants Wings: 4 membranous wings Hind pair smaller than front pair Pairs attached by row of small hooks Bees, wasps, & ants have second abdominal segment constricted & narrow; i.e. effect of “wasp-waist” Sawflies have broadly joined thorax & abdomen

21 Order Hymenoptera bees, wasps, sawflies, ants Chewing or chewing/lapping mouthparts Complex metamorphosis Many beneficial Parasitoids, predators Pollinators Produce honey, beeswax Some plant feeders Some members sting; nuisance Many with complex social habits

22 Hymenoptera (=married wing) (bees, wasps, sawflies; 115K spp.) [front wings large, hind wings smaller, both membraneous; chewing mouthparts; some with stings - modified ovipositors; larvae caterpillar-like, sawflies; or maggot-like] Redheaded pine sawfly adult, larvae, & pupae

23 Hymenoptera (bees, wasps, sawflies; 115K spp.) Aphid wasp parasitizing aphid Ichneumonid wasp attacking wood-boring larva Acrobat antsYellowjacket wasp

24 Carpenter Bee

25 Trigonalyid Wasp Cocoo Wasp Dryinid Wasp Special Parasitic Wasps

26 Paper or Umbrella Wasps - Polistes

27 Order Trichoptera (=hair wing) caddisflies Adult mothlike, but no scales on wings, just hairs Wings folded roof-like over body Larvae somewhat caterpillar-like, but aquatic Larvae often make cases of sand, small pebbles, or plant material

28 Trichoptera (hair wing) (caddisflies; >7K spp.) [mothlike adults but no scales on wings; front wings narrow, often covered with hairs; larvae caterpillar-like and aquatic]

29 Order Lepidoptera (=scale wing) moths & butterflies Shingle-like scales on wings 4 wings, often colorful Complex metamorphosis Mouthparts Chewing in larva Sucking (siphoning) or none in adults Proboscis in butterflies: coiled siphon

30 Order Lepidoptera moths & butterflies Larvae (caterpillars) have 2 to 5 prolegs on abdomen Larvae feed on plants, stored products Butterflies have threadlike antennae with a knob, moths have threadlike or feathery antennae Some adults beneficial as pollinators

31 Lepidoptera (scale wing) (butterflies, moths, caterpillars; 150K spp.) [front and hind wings generally covered with scales; adult mouthparts a sucking tube, larvae have chewing mouthparts and prolegs on abdomen] Red admiral butterfly Cranberry girdler moth Luna moth

32 Armyworm moth wing & close-up

33 Skipper Butterfly

34 Polyphemus moth (one of the giant silkworm moths)

35 Buckeye butterfly (go Bucks!)

36 Black swallowtail butterfly & larva (parsleyworm)

37 Fiery skipper butterfly – adult, egg, larva & pupa in cocoon

38 Order Siphonaptera (sucking wingless) fleas Body: small, hard, laterally compressed Wingless Prominent beak Mouthparts: Piercing/sucking in adult Chewing in larva

39 Order Siphonaptera fleas Complex metamorphosis Larvae feed on organic matter Adults suck blood Adults transmit disease

40 Siphonaptera (sucking wingless) (fleas; 2.4K spp.) [wingless, extoparasitic adults; laterally compressed; jumping hind legs; larvae have chewing mouthparts and resemble midge larvae] Cat flea adult and larva

41 Order Diptera (two wing) true flies Mouthparts: Sucking: modified piercing/ sucking, sponging, lapping, slashing in adult Modified chewing in larva One pair wings, on mesothorax Metathorax has 1 pair of small, knobbed appendages (halteres) Occasionally wingless

42 Order Diptera flies Complex metamorphosis Feed on plants, organic matter, stored products, vertebrates; or predators Transmit animal diseases

43 Diptera (two wing) (flies, midges, mosquitoes; >150K spp.) [front wings membranous; hind wings reduced to small balance organ - haltere; mouthparts piercing- sucking or sponging sucking; larvae wireworm shaped or maggots with chewing or rasping mouthparts] Mosquito Moth fly House fly

44 Diptera (flies, midges, mosquitoes; >150K spp.) Hover fly adult (on flower), eggs near aphids and larva eating aphids Fruit fly



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