The rear section of a butterfly (or other insect) which contains the internal organs like digestive system, excretory system, nervous system and sexual organs. On a larvae it is segments 4 to 11.

Scales on some male butterflies that emit a scent (scent scales or sex gland).

Appendages for sensing which occur in pairs on the head of the imago butterfly (or other insect).

Separated into two equal parts.

A silk tent spun around the larva before pupation. The few New Zealand Butterflies that do this usually use silk to hold some dead leaves in place for protection.

The hind part of a pupa by which some species hang during pupation.

A state of hibernation which is triggered by changes in temperature and day-light, this enables the butterfly to survive winter. Often mixed up with quiescence.

A Butterfly (or other insect) that has two or more different forms, generally, but not limited to, a male and female form.

An insect that is active in the daytime, eg, a day-flying Moth.

A line along the top of the larva.