Reference

Martin Fikacek, Robert B. Angus (2006): Helophorus (Thaumhelophorus) inexpectatus ANGUS, 1995: description of male genitalia and notes on distribution, morphological variability and bionomy (Coleoptera: Helophoridae) – Koleopterologische Rundschau – 76_2006: 277 - 282.