Authors

E. McC. Callan

Document Type

Article

Journal/Book Title/Conference

Entomologist's Monthly Magazine

Volume

112

Publication Date

12-5-1977

First Page

249

Last Page

254

Abstract

The Meloidae and Rhipiphoridae are related families of parasitic beetles and exhibit larval heteromorphosis, in which successive larval instars are adapted for different modes of life and differ greatly in form. The first instar, known as a triungulin, is a planidium, which is active and free-living and often reaches its feeding site by phoresy on the adult of the host insect. After the food source is found active life ceases and the subsequent instars become stout and grub-like.

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