This document provides information on the order Coleoptera (beetles and weevils). It describes their physical characteristics including having sheathed wings and chewing mouthparts. It outlines the 3 suborders - Polyphaga, Adephaga, and Archostemata - and discusses 12 superfamilies within Polyphaga. For each superfamily, 1-3 representative families are described. It also lists the 4 families within Adephaga and the 2 families of Archostemata. In summary, it comprehensively covers the taxonomy of beetles from order to family level including physical traits.
7. Abdomen
Abdomen are covered with elytron.
But in some insects 2-3 abdominal segmented are naked.
8. 1) Suborder Polyphaga
Notopleural suture is absent or incomplete.
Wings are without 2m – cu cross veins.
Distal part is not spirally coiled in repose.
9. 2) Suborder Adephaga
Notopleural suture is present in prothorax.
Hind coxae are immovably fixed to the meta sternum.
Wings are usually with 2m – cu cross veins.
10. 3) Suborder Archostemata
Notopleural suture is present in prothorax.
Hind coxae are not immovably fixed to the metasternum.
Wings are usually with 2m – cu cross veins.
Distal part is spirally coiled in repose.
12. 1) Super family Scrabaeoidea
Antennae are 10 segmented.
With 3 – 7 apical segments on
one side to form lamellate club.
Species is stout body.
14. 1) Geotrupidae
E.g. Dor Beetle
Antennae are 11 segmented.
Abdominal spiracles all are
present in the pleural membranes.
15. 2) Family Scarabaeidae
E.g. dung beetles, scarab beetle etc..
Antennae are 8 – 10 segmented.
Abdominal spiracles some are
present in the sternites.
16. 2) Super family Hydrophiloidea
Antennae are short.
First 3 – 5 segments glabrous.
Next segments cup like.
Last one strong pubescent club shape.
Species is specially less stout.
Habit most aquatic.
18. 3) Super family Staphylinoidea
Antennae last 3 segment forming compact club.
Exoskeleton is very hard and shining.
Elytra truncate.
Last 2 abdominal segments are exposed.
19. 1) Family Silphidae
E.g. carrion beetle and bunging beetle
Elytra long.
Last abdominal segments exposed.
Abdomen is not usually mobile.
20. 2) Stephylinidae
E.g. Rove beetle
Elytra very short.
Leaving many abdominal segments exposed.
Abdomen usually mobile.
21. 4)Super family Histeriodea
Antennae geniculate.
Antennae last 3 segment forming compact club.
Exoskeleton is hard, black and shining.
Elytra truncture.
Leaving 1-2 abdominal segments exposed.
22. 1) Family Histeridae
E.g. Hister beetle
Commonly found in dung and carrion.
Having compact, hard and shining body.
Small sized (0.5-10 mm) with geniculate or club antennae.
Elytra Brown and black in color.
Antennae and legs beneath the body.
23. 5) Super family Buprestoidea
Antennae short and serrate.
Tarsi with ventral lobes on segments 2-4.
Abdominal tergites are all well sclerotized.
24. 1) Family Buprestidae
E.g. cotton borer
The single family buprestidae
(metallic wood boring beetles)
Adult have a scutellary streak on elytra.
The well marked transverse suture on metastenum.
25. 6) Super family Elateroidea
Antennae filiform.
Tarsi with more then one segment adhesive lobes beneath.
Abdominal tergites are weakly sclerotized.
Hind coxae are almost always with complete femoral plates.
26. 1) Family Elateridae
E.g. Click beetle
Antennal socket are close to eyes.
Femoral plates of hind coxae are broad throughout.
27. 7) Super family Cathariodea
Antennae are filiform.
Hind coxae are with femoral plates narrow incomplete or absent.
6 or 7 abdominal sternites are visible.
28. 1)Family Lampyridae
E.g. firefly, glow – worm
Luminous organ are present in one sex(male).
Elytra are usually with epipleura anteriorly broad.
29. 2) Family Cantharidae
E.g. Soldier beetle
Luminous organ are absent.
Elytra are narrow and with out epipleura.
30. 8) Super family Dermestoidea
Antennae are not filiform.
Hind coxae are more or less distinct femoral plates.
5 abdominal sternites are visible.
Tarsi are 5 segmented.
Prothorax is not hood like.
31. 1) Family Dermestidae
E.g. dermestid beetle, khapra
Mostly inhabit furs hides wool dried.
Preserved Insects or other food material.
32. 9) Super family Bostrychoidea
Prothorax is hood like.
Ocelli are absent.
33. 1) Family Anobidae
E.g. drugs store beetle, death watch beetle
Antennae are usually 11 segmented, rarely clubbed.
Hind coxae are contiguous.
34. 2) Family Bostrychidae
E.g. twig beetle
Antennae are usually less then 11 segmented, clubbed.
Hind coxae are contiguous.
35. 3)Family Lyctidae
E.g. powder post beetle
Antennae are usually less then 11 segmented, clubbed.
Hind coxae are separated.
36. 10) Super family Chrysomeloidea
Ocelli are present.
Head s not rostrate.
Gular suture is distinct.
Antennae are without club and not receive into a groove.
37. 1) Family Cerambycidae
E.g. Longicorn beetle, long horned wood boring beetle.
Antennae are at least two third long as whole body.
Tibiae with 2 spurs and claws always simple.
38. 2) Family Bruchidae
E.g. Dhora, seed beetle, pulse beetle
Antennae are shorter.
Claws are often split.
39. 3) Family Chrysomelidae
E.g. leaf beetle, potato beetle, red pumpkin beetle
Antennae are filiform fairly long.
Tarsi 4 segmented.
The 3rd segment is enlarged to form a large
Kidney shaped pad.
40. 11) Super family Cucujoidea
Head is not rostrate.
Antennae are filiform or clubbed.
Abdomen with 5 visible sternites.
41. 1) Family Rhizophagidae
E.g. root eating beetle
Antennae are clubbed (10 – 11 segments are fused).
Elytra truncate and last abdominal tergites are uncovered.
42. 2) Family Cucujidae
E.g. flat bark beetle
Antennae are filiform.
1st tarsal segment is much shorter than 2nd .
43. 3) Family Coccinellidae
E.g. lady bird beetle
Head is partly concealed by pronotum.
Tarsi is 4 segmented.
3rd segment concealed in the bilobed 2nd segment.
44. 4) Family Tenebrionidae
E.g. Darkling beetle, Red flour beetle
First 3 visible abdominal sternites are connate.
Fore coxae are not projecting.
45. 5) Family Meloidae
E.g. Blister beetle, Oil beetle
Head is strongly deflexed, neck narrow.
Tarsal claw is split and usually serrate.
46. 12) Super family Curculionoidea
Head is more or less produced into a rostrum.
Gular suture is nearly always confluent.
Antennae are usually geniculate and clubbed.
1st segment retractable into a groove.
47. 1) Family Curculionidae
E.g. Weevil, Rice weevil, Date palm weevil.
Head is forming a snout.
Antennae nearly always geniculate.
Trochanter very rarely long.
49. 1) Family Cicindelidae
E.g. Tiger beetle
Large sized terrestrial beetle.
Clypeus is extended laterally in
front of antennal insertion.
Elytra are not regularly striate.
50. 2) Family Carabidae
E.g. Carabid beetle, Ground beetle
Clypeus is not extended laterally
in front of antennal insertion.
Elytra with striation.
Terrestrial small sized insects.
51. 3) Family Dytiscidae
E.g. True water beetle.
Aquatic beetle.
Compound eyes are not completely divided.
Antennae are filiform.
52. 4) Family Gyrinidae
E.g. Whirligig beetle
Aquatic beetle.
Compound eyes are completely divided into two.
Antennae are short and thick.