A–C Micrographs of Trichobius parasiticus male: A dorsal view (body 5.4 mm long) B head (latero vertices and occipital lobes well defined) and mesonotum (prescutum with very short discal setae immediately in front of the transverse suture (black arrow) and scutum posteriorly with an irregular W-shaped row of short setae (white arrow)), dorsal view C gonopods, lateral view D–F micrographs of Trichobius jubatus male: D dorsal views (body 3.8 mm long) E head (occipital lobes of head densely setose, eyes multifaceted) and mesonotum (mesonotum essentially setose throughout, and median and transverse sutures not united), dorsal view F metasternal lobe united with metepimeron (arrows), ventral view. Abbreviations: cx.2: mesocoxa; cx.3: metacoxa; e: eyes; epm: meteprmeron; gon: gonopods; mga: male genital apparatus; ms: mesonoto; mts: metasternum; mts.l.: metasternal lobe; St2: Sternum 2; t1+2: tergum l + 2; w: wings.