Lab practical 1 Flashcards
(170 cards)
Collembola (non-insect hexapod)
Springtails
biplura (non-insect hexapod)
two-pronged bristletails
Protura (non-insect hexapod)
conetails
Order Microcoryphia (formerly archaeognatha)
Bristletails
1 north American family: Machilidae, 24 spp.
can take 2 years to mature
humback appearance
some can jump
have two cerci and median caudal filament
large compound eyes that often touch
order zygentoma
silverfish and firebrats
one major family in N. America: lepismatidae; 14 spp.
two long cerci flanking median caudal filament
both are dorsoventrally flattened
compound eyes reduced or gone
Order Ephemeroptera
spend most of their life as aquatic juveniles
there are many families but are very difficult to tell apart.
nymph has gills alongside their abdomen and three long filaments emerging from the rear of the abdomen
Order Odonata
Dragonflies and damselflies
a long abdomen and large compound eyes
two pairs of wings
two suborders:
- zygoptera: damselflies
- anisoptera: dragonflies
Suborder zygoptera
damselflies
hindwing and forewing are similar in size and shape
compound eyes large, nearly spherical
wings, held over the abdomen when at rest
3 main families:
- caloptyrigidae
- coenagrionidae
- lestidae
family caloptyrigidae
ebony jewelwing damselflies or broadwing damselflies
wings narrow gradually at base
wings darkened
10 or more antenidal crossveins at costal regions
Family coenagrionidae
narrow wing damselflies
wing clear, except for perostigma
2 antinodal crossveins on costal margin
family lestidae
spread-wing damselfly
wing often held outward and away from body when at rest
2 antenodal crossvein at costal margin
Suborder anisophora
dragonflies
hindwings wider at the base than the forewings
compound eyes hemispherical
wings held horizontally at rest, perpendicular to the body
family aeschidae
“darter” dragonflies
compound eyes that rest on top
triangle in the wing venation
family libellulidae
common skimmer dragonflies
compound eyes that meet at the top of the head
the anal loop of the hindwing is boot-shaped
family gomphidae
clubtail dragonflies
eyes do not meet
final segment of abdomen often enlarged
Order dermaptera
Earwigs
often scavengers or herbivores
some viviparous
female earwigs demonstrate subsocial behavior
cerci enlarge to form forceps, some can be IDed or sexed by their forceps
some are apterous, others have shortened tegmina
major family: forficulidae
family forficulidae
largest earwing family
>460 spp. worldwide and 66 genera
order plectoptera
stoneflies
another aquatic juvenile order. some species require years to develop into adults
adults live for a few weeks
filiform antennae
adults retain cerci
difficult to key out species
ORder Orthoptera
grasshoppers, katydids, crickets
forwings adapted as tegmina
saltatorial legs
tarsal segments unique to species
2 suborders:
- caelifera: chisel bearers
- ensifera: sword bearers
family tettigoniidae
long-horned grasshopper
antennae of body length or longer
tarsi 4 4 4
ovipositor pronounced, scimitar-shaped
wings projected
often leaf mimics
family raphidiophoridae
cave and camel crickets
antennae body length or more
wingless
dorsum prominently arched
tarsi 4 4 4
family acrididae
short-horned grasshopper
short antennae
pronotum does not extend over abdomen
tarsi sequence 3 3 3
ovipositor short
family tetrigidae
pygmy grasshoppers
antennae short
quite small
pronotum extends over the entire abdomen, almost to the wing tips
Family Gryllidae
crickets, field crickets
antennae of body length or longer
ocelli absent
small spinules on the hind tibia and long spines