ENT 317
Sample Syllabus
Sample Lesson
Introduction
Six Common Characteristics of Arthropods
Phylogeny of arthropods and related groups
Characteristics of Adults in the Insects Orders
Order: Collembola
Order: Orthoptera
Order: Dermaptera
Order: Hemiptera
Order: Homoptera
Order: Thysanoptera
Order: Neuroptera
Order: Coleoptera
Order: Diptera
Order: Lepidoptera
Order: Hymenoptera
Wrap-Up

 

Order: Orthoptera
The order Orthoptera includes individuals such as grasshoppers, crickets, and katydids. Insects in this order demonstrate incomplete or paurometabolous metamorphosis; that is, they develop from an egg to a nymph molting several times until they become an adult.

They're described as having two pairs of wings. The front wings are leathery and referred to as the tegmina. The hind wings are membranous. Members of this order have chewing mouthparts. Distinctive features for members of the order Orthoptera are leathery front wings and membranous hind wings.

Cricket

Cricket

Order: Orthoptera

Family: Gryllidae

Katydid

Katydid

Order: Orthoptera

Family: Tettigoniidae

Examine the two illustrations. You can see in the top view of the cricket the tegmina or the leathery front wing that is folded over the top of the body.

In the lateral view of the katydid, you can see the leathery wing just slightly covering most of the membranous wing beneath.

There are about 12,500 different species worldwide in this order. In North America north of Mexico there's about 1,080 species. Common members of this order associated with turfgrass include species called mole crickets.