b) LAID IN GROUPS 1) Pedicellate eggs: Eggs are laid in silken stalks of about 1.25 mm length in on groups plants.
Eg: Green lace wing fly.
2) Barrel shaped eggs: Eggs are barrel shaped. They look like miniature batteries. They are
deposited in compactly arranged masses. Eg: Stink bug.
3) Ootheca: Eggs are deposited by cockroach in a brown bean like chitinous capsule. Each
ootheca consists of a double layered wrapper protecting two parallel rows of eggs. Each
ootheca has 16 eggs arranged in two rows. Oothecae are carried for several days protruding
from the abdomen of female prior to oviposition in a secluded spot. Along the top, there is a
crest which has small spores which permit gaseous exchange without undue water loss.
Chitinous egg case is produced out of the secretions of collaterial glands.
4) Egg pod: Grass hoppers secrete a frothy material that encases an egg mass which is
deposited in the ground. The egg mass lacks a definite covering. On the top of the egg, the
frothy substance hardens to form a plug which prevents the drying of eggs.