Bicellaria stackelbergi Tumikoski

Bicellaria stackelbergi Tumikoski

(Figs 35–36)

Bicellaria stackelbergi Tumikoski, 1955: 74.

Type material examined. HOLOTYPE 3: Russia: Kamtschatka, Ozernaja, 30.vii.1917, Y. Wuorentaus (labelled: “Mus. Zool. H:fors, Spec. typ. No. 8200 Bicellaria Stackelbergi Tuomikoski “). PARATYPE: 13, Kamtschatka, Bolscherjetsk [now Ust—Bolsheretsk], 20.vii.1917, Y. Wuorentaus—(NHMH).

Additional material examined (33, 2Ƥ). Russia: 23, 2Ƥ, Archangel'skaya oblast, Kanin, B. Poppius; 13, Republic Khakassia, r. Abakan, s. Nemir (r. = river, s. = village), 11.v. 197?, Wagner—(NHMH).

Diagnosis. The species may be easily recognized according to the key. Almost silvery dusted abdomen is similar to B. alpina, but this latter species has black setose body and a long seta on the third antennal segment (Fig. 48). Lustrous legs is a unique feature of this species among European fauna (remaining known species have microtrichose legs except sometimes posterior part of hind femur). Male postgonites are narrowed apically, both phallic hooks present, nearly equally long, left one strongly (right one slightly) broadened laterally (best visible from behind). Interestingly, one female paratype represents in fact B. uvens.

Distribution. Poorly known, probably Palaearctic species, in Europe known only from extreme North (Kola, Kanin).

Remarks. The species was described (and hypandrium illustrated) on the basis of specimens from Kola, Kamtschatka (Bolscherjetsk [now Ust—Bolsheretsk]), Ozernaja river), Jakutsk and Altai.