A Revision of the ant-like beetle genus Custotychus (Coleoptera: Staphylinidae: Pselaphinae)
Date of Award
Senior Honors Thesis
College or School
Program or Major
Bachelor of Science
The genus Custotychus is a well-defined monophyletic group of the ant-like litter beetles (Coleoptera: Staphylinidae: Pselaphinae). The species range from the mid-Atlantic to the Southwest regions of the United States. A taxonomic revision based on morphological characters has produced thirteen species, eight of which are newly described species. The species C. spiculifer has been discovered to be the junior synonym of the species C. verticalis.
All species were identified and described through the use of dissections, characterization of diagnostic features, and the illustration of these features through drawings and the use of a scanning electron microscope. The most important feature in placing specimens of Custotychus species is the genitalia, which must be dissected out of these 1.8 mm beetles to be observed, with also the position and form of the metasternal tubercle being important.
Geromini, Sarah Danielle, "A Revision of the ant-like beetle genus Custotychus (Coleoptera: Staphylinidae: Pselaphinae)" (2014). Honors Theses and Capstones. 222.