What is "xystosomus"

Xystosomus is a genus of beetles in the family Carabidae, containing the following species:

• Xystosomus convexus Erwin, 1973
• Xystosomus impressifrons Erwin, 1973
• Xystosomus inflatus (Schaum, 1859)
• Xystosomus laevimicans Erwin, 1973
• Xystosomus laevis Erwin, 1973
• Xystosomus niger Erwin, 1973
• Xystosomus paralaevis Erwin, 1973
• Xystosomus tholus Erwin, 1973
• Xystosomus turgidus (Schaum, 1863)