Plusiocampa (Plusiocampa) balsani Condé, 1947

Plusiocampa balsani Condé, 1947: 46, fig. 3f.

Campodea staphylinus Viré, 1897: 7, figs 1–2.

Diagnosis (Condé 1947 b, 1948b; Bareth 2006)

Troglomorphic species. Antennae with 30–40 antennomeres; 12 complex olfactory chemoreceptors in cupuliform organ; protruding frontal process with tubercular setae. Pronotum with 1+1 ma, 3+3 la, 2+2 lp macrosetae; mesonotum with 1+1 ma, 2+2 la, 2+2 lp macrosetae; metanotum 1+1 ma, 1+1–2+2 la, 2+2 lp macrosetae; large, long, barbed notal macrosetae; scarce barbed clothing setae. One or two ventral tibial macrosetae; unequal claws with large lateral crests, posterior claw with a backward overhang. Urotergites I–II with 1+1 post macrosetae; urotergite III with 0+0–1+1 la, 1+1 post macrosetae; urotergite IV with 1+1 la, 2+2 post macrosetae; urotergites V–VII with 1+1 la, 4+4 post macrosetae; urotergite VIII with 6+6 post macrosetae; abdominal segment IX with 8+8 post macrosetae; urosternite I with 7+7, urosternites II–VII with 6+6, urosternite VIII with 2+2 macrosetae. Male with a narrow area of glandular g 1 setae, with subtrapezoidal appendages with glandular a 2 setae; female with subcylindrical appendages with glandular a 1 setae. Spermatozoid fascicles with a diameter of 55–60 µm and a width of 15 µm, its filament wheels with 2½ turns of 460 µm long and 12–13 µm diameter filament.

Habitat and distribution

Subterranean species found in 49 caves around the Central Massif, France.