Tornus” redirects here. For the gastropod genus, see Tornus (gastropod).
This glossary describes the terms used in the formal descriptions of lepidopteran species.
Parts of an adult butterflyLike all insects, adult butterflies have three distinctive segments to their bodies, the head, thorax and abdomen. The head has the eyes, the mouth parts and antennae. The mouth parts have a proboscis formed from the maxillae. The legs and wings arise from the thorax. The abdomen is free of appendages in the adults. The venation and scale colour patterns on the paired fore and hind wings are usually the first characters used in identification. In the case of certain species, the identity can only be established using the structure of genitalia or by use of molecular techniques. Since mimicry is common in Lepidoptera, care must be taken while carrying out identification from physical characteristics alone.
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