Coleoptera Coleo – a sheath Ptera – wings Insects of this order have beetles & weevil.
Head Antennae is varies. Mouth parts are chewing type.
Thorax Fore wing are elytra. Hind wing are membranous .
Abdomen Abdomen are covered with elytron. But in some insects 2-3 abdominal segmented are naked.
1) Suborder Polyphaga Notopleural suture is absent or incomplete. Wings are without 2m – cu cross veins. Distal part is not spirally coiled in repose.
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.
3) Suborder A rchostemata 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.
Super families of suborder polyphaga IT include 12 super family
1) Super family S crabaeoidea Antennae are 10 segmented. With 3 – 7 apical segments on one side to form lamellate club. Species is stout body.
Families of the super families scarabaeoidea
1) Geotrupidae E.g. Dor Beetle Antennae are 11 segmented. Abdominal spiracles all are present in the pleural membranes.
2) Family Scarabaeidae E.g. dung beetles, scarab beetle etc.. Antennae are 8 – 10 segmented. Abdominal spiracles some are present in the sternites.
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.
1) Family Hydrophilidae E.g. water scavengers, haydrophilus piceus Large numbers truly aquatic.
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.
1) Family Silphidae E.g. carrion beetle and bunging beetle Elytra long. Last abdominal segments exposed. Abdomen is not usually mobile.
2) Stephylinidae E.g. Rove beetle Elytra very short. Leaving many abdominal segments exposed. Abdomen usually mobile.
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.
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.
5) Super family Buprestoidea Antennae short and serrate. Tarsi with ventral lobes on segments 2-4. Abdominal tergites are all well sclerotized.
1) Family B uprestidae 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 .
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.
1) Family Elateridae E.g. Click beetle Antennal socket are close to eyes. Femoral plates of hind coxae are broad throughout.
7) Super family C athariodea Antennae are filiform. Hind coxae are with femoral plates narrow incomplete or absent. 6 or 7 abdominal sternites are visible.
1)Family Lampyridae E.g. firefly, glow – worm Luminous organ are present in one sex(male). Elytra are usually with epipleura anteriorly broad.
2) Family C antharidae E.g. Soldier beetle Luminous organ are absent. Elytra are narrow and with out epipleura.
8) Super family D ermestoidea 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.
1) Family D ermestidae E.g. dermestid beetle, khapra Mostly inhabit furs hides wool dried. Preserved Insects or other food material.
9) Super family Bostrychoidea Prothorax is hood like. Ocelli are absent.
1) Family Anobidae E.g. drugs store beetle, death watch beetle Antennae are usually 11 segmented, rarely clubbed. Hind coxae are contiguous.
2) Family Bostrychidae E.g. twig beetle Antennae are usually less then 11 segmented, clubbed. Hind coxae are contiguous.
3)Family L yctidae E.g. powder post beetle Antennae are usually less then 11 segmented, clubbed. Hind coxae are separated.
10) Super family C hrysomeloidea Ocelli are present. Head s not rostrate. Gular suture is distinct. Antennae are without club and not receive into a groove.
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.
2) Family B ruchidae E.g. Dhora, seed beetle, pulse beetle Antennae are shorter. Claws are often split.
3) Family Chrysomelidae E.g. leaf beetle, potato beetle, red pumpkin beetle Antennae are filiform fairly long. Tarsi 4 segmented. The 3 rd segment is enlarged to form a large Kidney shaped pad.
11) Super family Cucujoidea Head is not rostrate. Antennae are filiform or clubbed. Abdomen with 5 visible sternites.
1) Family Rhizophagidae E.g. root eating beetle Antennae are clubbed (10 – 11 segments are fused). Elytra truncate and last abdominal tergites are uncovered.
2) Family C ucujidae E.g. flat bark beetle Antennae are filiform. 1 st tarsal segment is much shorter than 2 nd .
3) Family Coccinellidae E.g. lady bird beetle Head is partly concealed by pronotum. Tarsi is 4 segmented. 3 rd segment concealed in the bilobed 2 nd segment.
4) Family Tenebrionidae E.g. Darkling beetle, R ed flour beetle First 3 visible abdominal sternites are connate. Fore coxae are not projecting.
5) Family Meloidae E.g. Blister beetle, Oil beetle Head is strongly deflexed, neck narrow. Tarsal claw is split and usually serrate.
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. 1 st segment retractable into a groove.
1) Family Curculionidae E.g. Weevil, Rice weevil, Date palm weevil. Head is forming a snout. Antennae nearly always geniculate. Trochanter very rarely long.
Families of suborder Adephaga 4 families
1) Family C icindelidae E.g. Tiger beetle Large sized terrestrial beetle. Clypeus is extended laterally in front of antennal insertion. Elytra are not regularly striate.
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.
3) Family Dytiscidae E.g. True water beetle. Aquatic beetle. Compound eyes are not completely divided. Antennae are filiform.
4) Family Gyrinidae E.g. Whirligig beetle Aquatic beetle. Compound eyes are completely divided into two. Antennae are short and thick.
Families of suborder Archostemata 2 families
F amily Cupedidae and Micromalthidae Only recorded from the central united states. Also introduced in Hawaii and South Africa.