ENTOMOLOGY LAB PRACTICAL 2

Order: Zygentoma

silverfish

• antennae, lack wings

• 3 long cerci

Order: Ephemeroptera

mayflies

• hindwings smaller than forewings

• 2-3 long cerci

Libellulidae

common skimmers

• anal loop is boot shaped

• different shaped triangles

• eyes come together and touch slightly

Aeshnidae

darners

• triangles approximately same shape

• eyes obviously touching

Gomphidae

clubtails

• tails are clubbed

• eyes not touching

• two bottoms of triangles together

Coenagrionidae

narrow-winged damselflies

• narrow wings at base

• m3 vein farther from body

Calopterygidae

broad-winged damselfly

• wings broad at the base

Lestidae

spreadwing damselflies

• wings stalked at the base

• M3 vein originates closer to the body

Tetrigidae

pygmy grasshoppers

• small

• pronotum elongated

Tridactylidae

pymy mole cricket

• fossorial legs

Acrididae

short-horned grasshoppers

• short antennae

• all tarsi 3-segmented

• pronotum short

Tettigoniidae

katydids + long-horned grasshoppers

• wings held tent-like

Rhaphidophoridae

camelback crickets

• humpbacked appearence

Gryllidae

crickets and tree crickets

• wings held flat over body

Aphididae

aphids

• soft-bodied, pear-shaped

Cicadidae

cicadas

• forewings membranous

Membracidae

tree hoppers

• pronotum extends backwards over the body, pointed or flared

Cercopidae

froghoppers and spittlebugs

• Hind tibiae have one or two stout spines

Cicadellidae

leafhoppers

• hind tibiae: one or more rows of a small spines

Corixidae

water boatmen

• hind legs elongate and oar like

Notonectidae

back swimmers

• front legs not scoop shaped

Nepidae

water scorpions

• raptorial foreleg

Belostomatidae

Giant water bugs

• front legs large and raptorial

Gerridae

water striders

• short forelegs with large gap to middle leg

Cimicidae

bed bugs

• flat and oval to round

• compound eyes

Miridae

plant bugs

• forewing has a cuneus

Reduviidae

assasin bugs

• prosternal groove for 3 segmented beak

Nabidae

damsel bugs

• antennae 4 segmented

Tingidae

lace bugs

• reticulate sculpturing

Lygaeidae

seed bugs, milkweed bugs

• membrane of forewing has 4-5 veins

Coreidae

leaf-footed bugs

• trapezoidal prothorax

Cydnidae

Burrowing bugs

• string spines present on tibiae

Pentatomidae

stink bugs

• scutellum large and triangular, doesn’t reach tip of the abdomen

Scutelleridae

shield bugs

• scutellum reaches tip of abodmen

Alydidae

large, wide head wimilar width to pronotum and scutellum