Agri 41 insect orders

Question 1

How many total insect orders worldwide?

Answer 1

30-33

Question 2

How many insect orders are present in the Philippines?

Answer 2

25

Question 3

There are three insect orders elevated to “subclass” level. What are they and which class do they belong to now? Why were they promoted?

Answer 3

• Collembola, Protura, Diplura
• class Entognatha
• because of their basal lineage with hexapoda and molecular evidences

Question 4

What is the first step in scientific pest control and/or effective pest management?

Answer 4

Correct identification of insects

Question 5

T/F. Out of the insect orders, 12 are beneficial while the rest are harmful.

Answer 5

False. Insect orders cannot be absolutely or solely “harmful” or “beneficial”.

Question 6

How many orders are the most important in Philippine agriculture (both harmful and beneficial)? What are they?

Answer 6

12 insect orders

6 insect orders [pest]

Lepidoptera, Coleoptera, Hemiptera, Thysanoptera, Orthoptera, Diptera

9 insect orders [major biological control agents of insect pests]

[ predators ] : Coleoptera, Hemiptera, Orthoptera, Diptera, Neuroptera, Odonata, Dermaptera, Mantodea
[ parasitoids ] : Hymenoptera, Diptera

Question 7

These are the other insect orders that have no agricultural significance, but are harmful/injurious in public health, medical and veterinary fields, and households.

Give all seven insect orders.

Answer 7

“urban pests”

Diptera, Phthiraptera, Siphonaptera, Hemiptera, Blattodea, Coleoptera, Isoptera

Question 7

What is the most beneficial insect order and why?

clue: what two insects does it include?

Answer 7

Hymenoptera, because it includes honeybees (pollinators, producers of honey) and parasitic wasps (parasitoids).