Monday, 18 November 2002
D0009

This presentation is part of : Student Competition Display Presentations, Section A. Systematics, Morphology, and Evolution

Phylogenetic placement of members of the Compsobracon group (Hymenoptera: Braconidae)

Jason W. Leathers, Department of Entomology, Oregon State University, Department of Entomology, 2046 Cordley Hall, Corvallis, OR

The Compsobracon group contains 25 described species of brightly colored Neotropical Braconidae divided into seven genera: Compsobracon Ashmead, Calobracon Szépligeti, Cyclaulax Cameron, Compsobraconoides Quicke, Cyclaulacidea Quicke and Delobel, Gracilibracon Quicke, and Sacirema Quicke. Characters that define the genera include facial sculpture, scape morphology, the shape of the foretarsus, wing venation, and metasomal sculpture. A few undescribed species have combinations of these characters that make generic placement difficult. Fortunately, parsimony allows these taxa to be placed into existing genera with minimal assumptions of character change. I have employed a morphology based cladistic analysis to assign some of these taxa their proper Linnean names.

Species 1: Hymenoptera Braconidae Compsobracon magnificus
Species 2: Hymenoptera Braconidae Sacirema lachrymosus
Species 3: Hymenoptera Braconidae Calobracon bicolor
Keywords: taxonomy, morphology

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