ENTOMOLOGY questions with verified answers
Acrididae Family
(short-horned grasshoppers and locusts) Ans✓✓✓ -pronotum does not
extend beyond base of wings
-wings usually well-developed, but short (brachypterous) or absent
(apterous) in some species
-antennae short, typically about one-half body length
-tympana (hearing organs), if present, are on the sides of the first
abdominal segment
-hind femora greatly enlarged (for jumping), typically about as long as
hind wings
-ovipositor short and stout
-tarsi have three segments, often w/ conspicuous pad (arolium)
between claws
- includes many pest species
Phylum - Arthropoda
Class - Insecta
Order - Orthoptera
Family - Acrididae
APTERYGOTE Characteristics Ans✓✓✓ Share "primitive" characteristics
with Myriapods and non-insect Hexapods:
1. Continue to molt as adults
,2. Short, segmented appendages along sides of abdomen
3. Males leave spermatophores on the ground for females to pick up
APTERYGOTE Ans✓✓✓ The Class Insecta contains a number of insect
Orders, these Orders are categorised in to two subclasses called
Apterygota and Pterygota.
The Apterygota are WINGLESS insects and this subclass contains two
Orders:
Order: Microcoryphia / Jumping Bristletails
Order: Thysanura / Silverfish, Firebrats
ARACHNIDS Ans✓✓✓ Non-insect Hexapods,
Spiders, Scorpions
Blattella asahinai / Oriental Cockroach Ans✓✓✓ - Order Dictyoptera,
Family Blattidae
- wings longer than German Cockroach
- strong flyer
- attracted to light
prefers to live outdoors
, Blattella germanica / German Cockroach Ans✓✓✓ - Order Dictyoptera,
Family Blatellidae
- 0.51-0.63 in. long
- has wings but cannot sustain flight
CAUDAL FILIMENT Ans✓✓✓
CERCI Ans✓✓✓ Cerci (singular Cercus) are paired appendages on the
abdomen of many species of insect. Cerci perform a sensory function.
The size of cerci varies between species with some having barely
discernible cerci while others, like earwigs, having stout and obvious
cerci (sometimes called pincers).
Characteristics of Class Insecta Ans✓✓✓ 1. Distinctive antennal
structure (no muscles beyond two basal segments?)
2. Exoskeleton composed of chitin
3. Wax layer covering the exoskeleton
4. Complete respiratory (tracheal) system with external valves
(spiracles)
5. Compound eye (some have "simple eye")
Chevrons Ans✓✓✓ >>>>>>>>>>>>
Acrididae Family
(short-horned grasshoppers and locusts) Ans✓✓✓ -pronotum does not
extend beyond base of wings
-wings usually well-developed, but short (brachypterous) or absent
(apterous) in some species
-antennae short, typically about one-half body length
-tympana (hearing organs), if present, are on the sides of the first
abdominal segment
-hind femora greatly enlarged (for jumping), typically about as long as
hind wings
-ovipositor short and stout
-tarsi have three segments, often w/ conspicuous pad (arolium)
between claws
- includes many pest species
Phylum - Arthropoda
Class - Insecta
Order - Orthoptera
Family - Acrididae
APTERYGOTE Characteristics Ans✓✓✓ Share "primitive" characteristics
with Myriapods and non-insect Hexapods:
1. Continue to molt as adults
,2. Short, segmented appendages along sides of abdomen
3. Males leave spermatophores on the ground for females to pick up
APTERYGOTE Ans✓✓✓ The Class Insecta contains a number of insect
Orders, these Orders are categorised in to two subclasses called
Apterygota and Pterygota.
The Apterygota are WINGLESS insects and this subclass contains two
Orders:
Order: Microcoryphia / Jumping Bristletails
Order: Thysanura / Silverfish, Firebrats
ARACHNIDS Ans✓✓✓ Non-insect Hexapods,
Spiders, Scorpions
Blattella asahinai / Oriental Cockroach Ans✓✓✓ - Order Dictyoptera,
Family Blattidae
- wings longer than German Cockroach
- strong flyer
- attracted to light
prefers to live outdoors
, Blattella germanica / German Cockroach Ans✓✓✓ - Order Dictyoptera,
Family Blatellidae
- 0.51-0.63 in. long
- has wings but cannot sustain flight
CAUDAL FILIMENT Ans✓✓✓
CERCI Ans✓✓✓ Cerci (singular Cercus) are paired appendages on the
abdomen of many species of insect. Cerci perform a sensory function.
The size of cerci varies between species with some having barely
discernible cerci while others, like earwigs, having stout and obvious
cerci (sometimes called pincers).
Characteristics of Class Insecta Ans✓✓✓ 1. Distinctive antennal
structure (no muscles beyond two basal segments?)
2. Exoskeleton composed of chitin
3. Wax layer covering the exoskeleton
4. Complete respiratory (tracheal) system with external valves
(spiracles)
5. Compound eye (some have "simple eye")
Chevrons Ans✓✓✓ >>>>>>>>>>>>
