Insect Orders

Question 1

Protura

Answer 1

> Wingless
Eyes and antennae absent
Front legs project forward (beyond head)

Question 2

Collembola

Answer 2

> Minute, soft-bodied, wingless, cylindrical or globular bodies
Forked appendage near end of abdomen
Peg-like ventral tube/collophore on ventral side of 1st abdominal segment

Question 3

Diplura

Answer 3

> Eyes absent
Beaded antennae, longer than head
One segmented tarsi
Cerci filiform or forceps-like

Question 4

Thysanura/Zygentoma

Answer 4

> Three long, equal lengthed appendages
Eyes small or missing
Body flat, often covered with dusty scales

Question 5

Archaeognatha

Answer 5

> Body cylindrical, arched thorax, large compound eyes

> Three terminal filaments, middle one longer

Question 6

Ephemeroptera

Answer 6

> Triangular wings, hindwings smaller
2 or 3 long abdominal filaments
Short, bristle-like antennae

Question 7

Odonata

Answer 7

> Rectangular stigma (pigmented patch) near tip of each wing
Large, compound eye
Short, bristle-like antennae
DAMSELFLIES: Front and hind wings stalked. Similar in size and shape
DRAGONFLIES: Hind wings have an enlarged anal region

Question 8

Orthoptera

Answer 8

> Filiform antennae
Hind legs modified for jumping
Massive development of pronotum (1st part of thorax)
Front wings thickened and parallel-sided (tegmina/tegmen), second pair fan-like

Question 9

Phasmatodea

Answer 9

> Females usually wingless
Tegmina/tegmen, plus hardened leading edge of hindwing
Slender body parts

Question 10

Embioptera

Answer 10

> Swollen last tarsal joint of front legs containing silk glands
Kidney-shaped eyes

Question 11

Grylloblattodea

Answer 11

> Antennae slender, filiform
> Body cylindrical
> Tarsi 5-segmented
> Secondarily wingless
> Cerci long

Question 12

Mantophasmatodea

Answer 12

> Hold the distal ends of their tarsi off the ground while walking

Question 13

Dermaptera

Answer 13

> Flat elongated soft body
Front wings thick and leathery, larger soft hindwings folded underneath
Terminal, forceps-like cerci

Question 14

Zoraptera

Answer 14

> If winged, have eyes

> Superficially resembling termites and Psocoptera

Question 15

Blattodea

Answer 15

> Body elongate oval shape
> Pronotum (shield-like front of thorax)forms transverse oval just behind head
> Tarsi 5-segmented
> Short, multi-segmented cerci
> Long, filiform antennae

Question 16

Blattodea (Isoptera)

Answer 16

> Social
Large reproductive queen adn king, very large, vestiges of wing bases, darkly pigmented
Soldiers, specialized and sclerotized (hardened) heads
Workers, unmodified heads and faint sclerotization

Question 17

Mantodea

Answer 17

> Large triangular head and large eyes

> Heavily spined prehensile for legs

Question 18

Thysanoptera

Answer 18

> Minute, slender, elongated soft body
2 pairs narrow, fringed wings
Antennae short
Legs short, ends in bladder

Question 19

Hemiptera

Answer 19

> First half of forewing is hardened, tip still membranous showing wing veins.
Formation of elongated rosterum
HETEROPTERA: Bottom half of fore wing thickened, forming hemelytra
STERNORRHYNCHA and AUCHENORRHYNCHA: Both pairs of wings membranous

Question 20

Psocoptera

Answer 20

> Small, soft-bodied, large round mobile heads
Long slender antennae
May be wingless

Question 21

Phthiraptera

Answer 21

> Small, flattened, wingless

> Usually host-specific

Question 22

Plecoptera

Answer 22

> Ladder-like pattern of veins and crossveins running diagonally across wing
Long antennae and cerci
Wings fold flat and extend past tip of abdomen

Question 23

Coleoptera

Answer 23

> Hardened front wings (elytra) meet in straight line down center of back. Covers for hind wings are large and membranous
Mandibulate mouthparts

Question 24

Strepsiptera

Answer 24

> Sexually dimorphic
Female in host throughout life with reduced head and thorax visible from host’s abdomen
Males large eyes, branched antennae, reduced club-like forewings (halters) and enlarged hind wings

Question 25

Neuroptera

Answer 25

> four membranous wings with many veins
Front and back wings same size
Long antennae

Question 26

Megaloptera

Answer 26

> Large, 2 pairs equal membranous wings

> Long beaded antennae

Question 27

Raphidioptera

Answer 27

> Prothorax is lengthened giving long neck appearance

> 2 pairs identical wings

Question 28

Hymenoptera

Answer 28

> Four membranous wings, few veins

> Characteristic mesosoma - thorax fused with first abdominal segment which also makes a ‘wasp waist’

Question 29

Trichoptera

Answer 29

> Moth-like insects
Hairy wings
Antennae very thing, often longer than body

Question 30

Lepidopetra

Answer 30

> Four board wings
Body and wings covered in scales
Probiscis present

Question 31

Mecoptera

Answer 31

> Slender, elongated bodies
Long, grasping legs, narrow wings
Mouthparts reduced to rostum (beak)

Question 32

Siphonaptera

Answer 32

> Small, wingless
Body laterally flattened
Long legs

Question 33

Diptera

Answer 33

> 2 membranous wings, have club shaped halters
Antennae short
Large compound eyes