Volesus nigripennis, male 9 head and left antenna, dorsal view 10 left antenna, ventral view 11 head and fore lobe of pronotum, lateral view (black arrow points to prosternal process; first and second visible labial segments indicated by white arrows) 12, 13 ventral view 12 head, except antenniferous, and most part of prosternum (arrows point to first and second visible labial segments) 13 head, except distal half of second visible labial segment. (1 first 2 second visible labial segments). Scale bars: 1.0 mm (9–11); 0.5 mm (12, 13).

  Part of: Gil-Santana HR, Oliveira J (2019) First description of the male of Volesus nigripennis Champion, 1899, with new records from Ecuador and Panama, taxonomical notes, and an updated key to the genera of Sphaeridopinae (Hemiptera, Reduviidae). ZooKeys 841: 97-123. https://doi.org/10.3897/zookeys.841.31153