Order Coleoptera

Question 1

Members of Family Meloidae secrete oil called __ at the tip of their abdomen.

Answer 1

Cantharidin

Question 2

What does cantharidin do?

Answer 2

Induce blisters

Question 3

Member of family Meloidae used as aphrodisiac

Answer 3

Lytta vesicatoria

Question 4

Which is false?
A. All members of the family are winged
B. All members of family Coleoptera have complete metamorphosis
C. Some members of the family infest food products

Answer 4

A

Question 5

Lytta vessicatoria belongs to family \_\_
A. Meloidiae
B. Staphylinidae
C. Dermastidae
D. Tenebrionidae

Answer 5

A

Question 6

Paederus fusipes belongs to family \_\_
A. Meloidiae
B. Staphylinidae
C. Dermastidae
D. Tenebrionidae

Answer 6

B

Question 7

Attagenus megatoma belongs to family \_\_
A. Meloidiae
B. Staphylinidae
C. Dermastidae
D. Tenebrionidae

Answer 7

C

Question 8

Tribolium castaneum belongs to family \_\_
A. Meloidiae
B. Staphylinidae
C. Dermastidae
D. Tenebrionidae

Answer 8

D

Question 9

Paederus sp vs Tenebrio sp. –> Who avoids the light?

Answer 9

Tenebrio sp.

Paederus - attracted to light

Question 10

Which could be  intermediate  host of H. nana?
A. Lytta vessicatoria
B. Paederus fusipes 
C. Trogoderma sp.
D. Tribolium confusum

Answer 10

D

Question 11

Which has larvae that undergo hypermetamorphosis?
A. Meloidiae
B. Staphylinidae
C. Dermastidae
D. Tenebrionidae

Answer 11

A

Question 12

 Cantharidin : main poison secreted. What does it do?
A. Meloidiae
B. Staphylinidae
C. Dermastidae
D. Tenebrionidae

Answer 12

A!

Cantharidin induces blisters

Question 13

 Pederin : main poison secreted. What does it do?
A. Meloidiae
B. Staphylinidae
C. Dermastidae
D. Tenebrionidae

Answer 13

B

Pederin - contact dermatitis

Question 14

When a member of the family Meloidiae is crushed, it causes a lesion —> vascular dermatitis. Explain mechanism

Answer 14

explained by blocking enzymes of sulpha

hydryl groups

Question 15

Identify main difference between T.castaneum & T.confusum & specify the exact characteristics for each

Answer 15

antenna!

T.castaneum - antennae have a distinct, moderately compact 3-segmented club
T.confusum - antennae are provided with loose indistinct 5-6 segmented club

Question 16

Differentiate wings of Coleoptera from Hemiptera

Answer 16

Coleoptera – Elytra – thick and horny without veins

Hemiptera – Hemi-elytra – thickened at the base with apical portions that are membranous

Question 17

Differentiate Orientation of wings

when closed of Coleoptera from Hemiptera

Answer 17

Coleoptera - Meet in a straight line down the back Hemiptera - Overlapping when not in use

Question 18

Differentiate mouth parts of Coleoptera from Hemiptera

Answer 18

Coleoptera - Chewing type

Hemiptera - Piercing and sucking type without palpi

Question 19

Differentiate metamorphosis of Coleoptera from Hemiptera

Answer 19

Coleoptera - Complete

Hemiptera - Gradual

Question 20

Why are Tribolium species more commonly digested in larval phases?

Answer 20

 more commonly digested in LARVAL stages as these closely
resemble rice grains, which are ingested accidentally by
humans

Question 21

associated with rice stubbles (pinaggapasan ng palay o
pinagputulan ng dayami)
A. Lytta vessicatoria
B. Paederus fusipes 
C. Trogoderma sp.
D. Tribolium confusum

Answer 21

B