Abstract
Anatomy of adults of Trichogramma evanescens (Hymenoptera: Trichogrammatidae) is described in detail for the first time based on series of sections and 3D computer reconstruction. The complex structure of the exoskeleton and musculature (except for reductions of individual muscles) is preserved in T. evanescens despite its tiny size. Considerable simplification is observed in the structure of the intestine, tracheal and circulatory systems, and in the reduced number of Malpighian tubules. Thus, the smallest Hymenoptera (Mymaridae and Trichogrammatidae) demonstrate both the effects of miniaturization universal for insects (reduction of the head endoskeleton, circulatory and respiratory systems) and specific ones.
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