Plusiocampa (Stygiocampa) bureschi Silvestri, 1931

Sendra, Alberto, Antić, Dragan, Barranco, Pablo, Borko, Špela, Christian, Erhard, Delić, Teo, Fadrique, Floren, Faille, Arnaud, Galli, Loris, Gasparo, Fulvio, Georgiev, Dilian, Giachino, Pier Mauro, Kovac, L'ubomír, Lukić, Marko, Marcia, Paolo, Miculinić, Kazimir, Nicolosi, Giuseppe, Palero, Ferran, Paragamian, Kaloust, Pérez, Toni, Polak, Slavko, Prieto, Carlos E., Turbanov, Ilya, Vailati, Dante & Reboleira, Ana Sofia P. S., 2020, Flourishing in subterranean ecosystems: Euro-Mediterranean Plusiocampinae and tachycampoids (Diplura, Campodeidae), European Journal of Taxonomy 591, pp. 1-138 : 96-97

Plusiocampa (Stygiocampa) bureschi Silvestri, 1931

Plusiocampa bureschi Silvestri, 1931b: 100 , figs iii–v.

Plusiocampa (Stygiocampa) rauseri Rusek, 1965: 94 , figs 18–24.

Diagnosis ( Silvestri 1931b; Condé 1955a, 1959; Condé & Bareth 1996; Bareth & Condé 2001)

Troglomorphic species. Antennae with 39–54 antennomeres; seven to nine complex olfactory chemoreceptors in cupuliform organ. Pronotum with 1+1 ma, 2+2 la, 2+2 lp macrosetae; mesonotum with 1+1 ma, 1+1 lp macrosetae; metanotum without macrosetae; long, barbed notal macrosetae; abundant notal clothing setae. No ventral tibial macrosetae; slightly unequal claws (1.1) with large lateral crests, posterior claw with a small backward overhang. Urotergite VII with 2+2 post macrosetae; urotergite VIII with 4+4 post macrosetae; abdominal segment IX with 6+6–7+7 post macrosetae; urosternite I with 7+7, urosternites II–VII with 5+5, urosternite VIII with 2+2 macrosetae. Male without glandular g 1 setae, subcylindrical slightly enlarged appendages with glandular a 1 setae; female with subcylindrical appendages with glandular a 1 setae. Spermatozoid fascicles 50 µm in diameter, 25 µm wide; wheels with 3½ turns of 300–350 µm and 5.6 µm diamter filament.

Habitat and distribution

Subterranean species found in 13 caves in a karst region on the left bank of the Iskar River, Sofia District, Balkan Mountains, Bulgaria.