(Silverfish / Firebrats / Bristle tail)
Greek "thysano-" meaning fringed "ura" meaning tail.
Body relatively flat, tapered
and often covered with scales.
Compound eyes small or
Antennae long, thread-like,
and multisegmented .
Abdomen with ten complete
The name Diplura, derived from the Greek words
"diplo-" meaning two and "ura" meaning tails.
•These small, eyeless arthropods.
•They have a pair of long beaded
antennae (moniliform) on the head .
•A pair of segmented sensory
•Long and slender, or forceps-like
in appearance .
•Tarsi one-segmented .
The name Protura, derived from the Greek words "proto-"
meaning first (or original) and "ura" meaning tail.
Compound eyes absent.
Front legs directed forward (probably
sensory in function).
Abdomen with 9-12 complete
Cerci and abdominal filaments
The name Collembola, derived from the Greek
"coll" meaning glue and "embol" meaning a wedge.
•Compound and simple eyes
•Filliform Antennae present,
•Abdomen 6-segmented .
•Body frequently clothed
with scales .
Antennae short and Setaceous.
Four to nine pairs of leaf-like or
fan-like gills along the sides of the
Front wings large, triangular
hind wings smaller, fan-shaped
Three long filaments at rear of
Greek "ephemera" meaning short-lived, "ptera"
(Dragonflies and Damselflies)
Greek "odonto-", meaning tooth, refers to the
strong teeth found on the mandibles of most adults.
Antennae short ,Setaceous.
Compound eyes large.
Four membranous wings.
Chewing mouth part.
Legs are used either as a basket
for catching prey or as grapples
for clinging to emergent
Greek "pleco" meaning folded and "ptera"meaning
wing, refers to the pleated hind wings.
• Antennae long, filiform.
• Front wings long and narrow.
• Body flattened.
(Rock Crawlers / Icebugs)
Greek "gryll" meaning cricket and "blatta"
• Antennae slender, filiform .
• Mouthparts is chewing.
• Body cylindrical
• Tarsi 5-segmented .
• Secondarily wingless .
(Grasshoppers / Locusts Crickets / Katydids)
Greek "ortho" meaning straight and "ptera" meaning wing.
Slender, thickened front
wings fold back over the
abdomen to protect
membranous, hind wings.
Hind leg is jumping leg.
(Walkingsticks / Stick Insects / Leaf Insects)
Greek "phasm" meaning phantom.
•Antennae short filliform.
•Mouthparts is chewing.
•Body long, cylindrical.
•Meso and meta thorax is
long in Stick insect while
broad in leaf insect.
Greek "derma" meaning skin and "ptera" meaning wings.
Active at night.
Antennae slender, long filliform .
Forewings short, thick,veinless
and leathery .
Hind wings membranous and
folded under forewings.
(Webspinners / Embiids)
Greek "embio" meaning lively and "ptera" meaning wings.
Antennae slender, filiform .
Mouthparts is chewing.
silk glands .
The name Blattodea is derived from "blatta", the
Greek word for cockroach.
•Antennae slender, filiform .
•Much of the head and thorax is
covered and protected dorsally by a
large plate of exoskeleton (the
•Legs adapted for running.
•Front wings thickened; hind wings
membranous, pleated .
•Stylus present at 9 segment.
(Cockroaches / Waterbugs / Mentid)
(Termites / White Ants)
Greek "iso" meaning equal and "ptera" meaning wings.
•Head large and cylindrical or
small and round.
• Antennae long moniliform.
•Compound eyes present.
•Two pairs of membranous
(Zorapterans / Angel Insects)
Name, derived from the Greek "zor" meaning pure and
"aptera" meaning wingless.
• Moniliform Antennae 9-
• Mouthparts is chewing.
•Wings often absent, with
reduced venation when present.
•Long stylus, short
Psocids / Barklice / Booklice
The name Psocoptera is derived from the Greek "psokos" meaning
rubbed or gnawed and "ptera" meaning wings.
•Head prominent, with Lonf
•Narrow "neck" between head and
•Two pairs of wings; some species
•Tarsi 2- or 3-segmented
Biting Lice / Bird lice / Chicken lice
•Chewing or biting type.
•Head is broad.
•Antennae short filliform; 3-5
•Eyes reduced or absent
•Tarsi 1- or 2-segmented, most
species have two small claws.
Sucking Lice / Mammal Lice / Human Lice
•Head conical, with suctorial
•Antennae short filliform, 3- to
•Eyes reduced or absent
•Tarsi usually 1-segmented with
a single large claw.
The name Heteroptera, derived from the Greek "hetero-
" meaning different and "ptera" meaning wings.
• Long filliform Antennae with 4-5
•Proboscis 3-4 segmented, arising
from front of head .
•Tarsi 2- or 3-segmented.
Plant hoppers / Tree hoppers / /white fly / Aphid / Jasid
Short setaceous antenna.
Piercing sucking mouthpart.
Membranous or hard throughout
The name Thysanoptera, derived from the Greek
"thysanos" meaning fringe and "ptera" meaning wings.
•Antennae short moniliform, 6-10
•Body cylindrical or spindle-shaped.
•Front and hind wings slender, rod-
like, with a dense fringe of long
hairs. Many species are secondarily
•Rod like stripy wings.
•End of abdominal tube present
called oviposter. 23
Lacewings / Antlions / Dobsonflies / Alderflies / Snakeflies
The name Neuroptera is derived from the Greek word
"neuron" meaning sinew and "ptera" meaning wings.
•Antennae long setaceous.
•Front and hind wing membranous,
similar in size.
•Extensive branching of venation in
Beetles / Weevils
The name Coleoptera, derived from the Greek words "koleos"
meaning sheath and "ptera" meaning wings.
Coleoptera (beetles and weevils) is the largest order in the class Insecta.
•Chewing mouthparts (sometimes
located at the tip of a beak) .
•Front wings (elytra) are hard and
serve as covers for the hind wings;
meet in a line down the middle of the
•Hind wings large, membranous,
folded beneath the elytra .
•Tarsi 2- to 5-segmented .
•Most beetles have a hard, dense
Twisted-wing parasites / Stylopids / Strepsipterans
The name Strepsiptera, derived from the Greek "strepsi" meaning
turned or twisted and "ptera" meaning wings.
•Large fan-shaped hind wings;
small club-like front wings.
•Forewing form haltere.
•Vestigial and chewing
•Antennae 4- to 7-segmented;
often with lateral branching.
Scorpionflies / Hangingflies
The name Mecoptera, derived from the Greek words
"meco" meaning long and "ptera" meaning wings.
•Head elongate with slender chewing
•Front and hind wings narrow, elongate, and
similar in size; crossveins numerous.
•Males of some species have enlarged
external genitalia held recurved over the
abdomen like a scorpion's tail.
•Long narrow similar wings
True Flies / Mosquitoes / Gnats / Midges
The name Diptera, derived from the Greek words "di" meaning
two and "ptera" meaning wings.
Antennae filiform, stylate, or
Mesothorax larger than pro- or
One pair of wings (front); hind
wings reduced (halteres) .
Tarsi 5-segmented .
The name Siphonaptera is derived from the Greek words "siphon"
meaning a tube or pipe and "aptera" meaning wingless.
•Short setaceous antenna.
•Body bilaterally flattened
•Mouthparts piercing sucking.
•Large bristles (ctenidia) often
present on head or thorax .
•Hind femur enlarged, adapted
Butterflies / Moths
The name Lepidoptera, derived from the Greek words "lepido"
for scale and "ptera" for wings.
Lepidoptera (moths and butterflies) is the
second largest order in the class Insecta.
•Mouthparts form a coiled tube (proboscis)
beneath the head.
Moths: thread-like, spindle-shaped, or
•Front wings large, triangular; hind wings
•Body and wings covered with small,
overlapping scales. 30
The name Trichoptera, derived from the Greek words "trichos"
meaning hair and "ptera" meaning wings.
Mouthparts reduced or
Two pairs of wings clothed
with long hairs.
Wings held tent-like over
Ants / Wasps / Bees / Sawflies / Horntails
The name Hymenoptera is derived from the Greek words
"hymen" meaning membrane and "ptera" meaning wings.
•Chewing mouthparts - except in bees
where maxillae and labium form a
proboscis for collecting nectar.
•Compound eyes well developed.
•Tarsi usually 5-segmented.
•Triangular stigma in front wings.
•Hind wings smaller than front wings.