Siobla acutiscutella

Niu, Gengyun & Wei, Meicai, 2010, Revision of the Siobla annulicornis, acutiscutella and sheni groups (Hymenoptera: Tenthredinidae), Zootaxa 2643, pp. 45-65 : 55

acutiscutella group

Diagnosis: Body including clypeus and mesoscutellum yellow, without metallic tinge, apex of antenna black; wings hyaline, apex distinctly infuscate; head above antennal sockets, mesoscutellum, and elevated part of mesepisternum densely punctured, usually without shiny interspaces; abdominal tergites shiny with few punctures; eyes large, shortest distance between eyes usually longer than eye height in female, slightly shorter in male; lateral sides of head behind eyes distinctly curved in dorsal view, occipital carina complete and sharp; mesoscutellum distinctly elevated, usually with a peak; ovipositor nearly as long as metabasitarsomere; lancet distinctly broadened before apex, subapical serrulae strongly protruding, sharp; annular sutures vestigial; valviceps of penis valve broad and elliptical in basal 2/3, apical part narrowed, dorsal margin with distinct teeth.

This group includes four species, all distributed in central China.