insects

collembola - springtails wings and mouthparts

mouthparts - usually mandibulate but some stylet like
wings - primitively wingless

collembola - key characters

many with forked structure (furcula) on the ventral side of 4th abdominal segment in a clasp like appendage (retinaculum) on the 3rd abdominal segment

microcoryphia - jumping bristletails mouthparts and wings

mandibulate ( chewing) wings - primitively wingless

microcoryphia - jumping bristletails key characters

-abdomen with 10-11 segments terminated with many segmented lateral cerci and medial extension of hte last abdominal segment. medial extension is much longer than cerci
- large and contiguous compound eyes relative to silverfish
-cylindrical in shape

thysanura - silverfish mouthparts and wings

mouthparts - mandibulate(chewing) wings - primitively wingless

thysanura - silverfish key characters

-abdomen with 10-11 segments terminated with many segmented lateral cerci and medial extension of the last abdominal segment
- very small compound eyes
-somewhat flattened in shape

ephemeroptera - mayflies mouthparts and wings

mouthparts - vestigial, wings - two pairs

ephemeroptera - mayflies key characters

-front wings much larger than hind wings held vertically above the body. Front wings usually triangular; hind wings usually rounded
-two or three long caudal filaments in the final adult stage

odonata - dragonflies and damselflies mouthparts and wings

mouthparts - mandibulate
wings - two pairs, membranous
- dragonflies - hind wings wider than front wings, particularly at the base , wings at rest held horizontally
- damselflies - front and hind wings similar in shape, narrow at base, wings at rests held

odonata - key characters

-large eyes, three ocelli and short, bristle like antennae
- legs weak, abdomen long and flexible terminating in clasping organs
- a notch called a nodus in each anterior margin of their wings

plecoptera -stoneflies mouthparts and wings

mouthparts - mandibulate, wings - two pairs, membranous net veined, often many cross veins

plecoptera - stoneflies key characters

-long antennae, at least half length of the body
-cerci often long
-wings are folded horizontally back over the body

orthoptera - crickets, grasshoppers, katydids, molecrickets mouthparts and wings

mouthparts - mandibulate, wings - most with two pairs, front wing often thickened (tegmina)

orthoptera - key characrers

-often, saltatory hind legs, some with fossorial front legs
-unsegmented cerci and leathery forewings

phasmatodea - walkingsticks mouthparts and wings

mouthparts - mandibulate, wings - two pairs, but many secondarily wingless

phasmatodea - key characters

- often long, slender, stick like with long legs. pairs of legs are evenly spaced along body
- cryptic coloration (camouflage)

dermaptera - earwigs mouthparts and wings

mouthparts - mandibulate, wings - two pairs (vestigial) or secondarily wingless

dermaptera - key characters

-short, leathery, veinless forewings that meet in a straight line
-cerci large and shaped like pinchers or small tweezers

isoptera - termites mouthparts and wings

mouthparts - mandibulate, wings - two pairs ( only on reproductives called alates)

isoptera - key characters

- social, in colonies and nests
- wings membranous with few veins; both apirs of equal length extending beyond the abdomen with a weak fracture at the wing base
-abdomen broadly joined to throax
-lightly colored workers and soldiers are wingless

mantodea - mantids m and w

mouthparts 0 mandibulate, wings - two pairs

mantodea - key characters

raptorial (enlarged femur) front legs
triangular head and elongate prothorax

blattodea - cockroaches m and w

mandibulate and twopairs may be reduced

blattodea - key characters

dorsoventrally compressed body, wings folded horizontally over abdomen
cursorial legs

hemiptera - truebugs, cicadas etc m and w

mouthparts - haustellate and wings - two pairs

hemiptera - suborder heteroptera truebugs

-basal portion of the forewings and leathery while the apical portion is membranous
- wings crisscross over the abdomen, behind the scutellum

suborder auchenorrhyncha - cicadas, hoppers

wings held roof like over the abdomen at rest
-almost exclusively plant feeders and some fungus feeders

suborder stenorrhyncha - aphids, whiteflies, scales

very small, all plant feeders, often wingless

thysanoptera - thrips m and w

haustellate and two pairs some wingless

thysanoptera - key characters

-minute, slender with a cone shaped feeding apparatus
-long, narrow wings are fringed with long hairs

psocoptera - psocids (barklice and booklice) m and w

mandibulate and twopairs or secondarily wingless

psocoptera - key chacaters

-if present, four membranous wings, held roofliek over the body
-moderately long, filiform antennae
-large clypeus

phthiraptera - lice m and w

some mandibulate chewing some haustellate, wings are absent

phthiraptera - lice key characters

small, dorsoventrally flattened boyd
one or two curved claws on legs for clinging to host hairs or feathers