First data on the larval morphology and biology of two Palaearctic species of the genus Allognosta Osten-Sacken, 1883 (Diptera, Stratiomyidae)

Abstract

Data on the morphology and ecology of the immature stages of two Palaearctic species of the genus Allognosta Osten-Sacken, 1883 (Diptera, Stratiomyidae) are given. The sides of the abdominal segments in the larvae of this genus are divided into two sections: the anterior one is shorter and with a conical projection, while the posterior one is more massive and paddle-shaped. The larvae inhabit the humus soil layer and the fruit bodies of polyporus fungi.