Abiskomyia rivalis Makarchenko et Makarchenko, sp. nov.

• Main Authors: Makarchenko, Eugenyi A., Makarchenko, Marina A.
• Format: Other/Unknown Material
• Language: unknown
• Published: 2015
• Subjects: Biodiversity; Taxonomy; Animalia; Arthropoda; Insecta; Diptera; Chironomidae; Abiskomyia; Abiskomyia rivalis; Kolyma; Magadan; Olen’; Tyellakh; kolyma river; Siberia
• Online Access: https://zenodo.org/record/6115856; https://doi.org/10.5281/zenodo.6115856

Abiskomyia rivalis Makarchenko et Makarchenko, sp. nov. (Figs. 39–56) Material. Holotype: adult male, Russian Far East, Magadan Region, Ten’kinskyi District, Olen’ Stream (upper stream of Kolyma River), about 3 km from Sibit-Tyellakh Village, 25.VI. 1977, leg. E. Makarchenko. Paratypes: 1 adult male and 2 males extracted from mature pupae, 1 pupa and 2 pupal exuviae, 1 larva and 3 larval skins taken from pupae, same data as holotype; 1 pupa with larval skin, 4 larvae, East Siberia, Republic of Buryatia, Severobaikalskyi (North Baikal) District, Davsha River (Baikal Lake basin), 5.VII. 2000, leg. L. Kravtsova. Adult male (n= 2) Total length 3.4–3.6 mm. Wing length 2.28–2.52 mm. Total length/wing length 1.43–1.49. Colouration brown, wing grey. Head. Temporal setae 9–11, including outer verticals and postorbitals, inner verticals absent. Clypeus massive, with 13–14 setae. Antenna with 13 flagellomeres and well developed plume; AR 1.02–1.13. Palp with 5 palpomeres. Palpomere length (in µm): 28 –32, 52–56, 80–92, 68–72, 92– 104. Thorax. Brown. Antepronotum with 3–7 lateral setae. Acrostichals 1–4, only in lightly coloured oval area; dorsocentrals 8–11 (in 1 row); prealars 3–4; scutellars 16. Wing. R with 4–6 setae, R 1 with 2 setae, R 4 + 5 with 2–3 setae subapically. Apex of R 4 + 5 distal of apex M 3 + 4. Cu 1 straight. Costa extension absent. Anal lobe rectangular-rounded. Squama with 18–20 setae. Legs. Spur of fore tibia 56–60 µm. Spurs of mid tibia 40–48 µm long, of hind tibia 64–68 µm and 42–44 µm long. Hind tibial comb with 11 setae. Length and proportions of leg segments as in Table 3. Hypopygium (Fig. 39). Tergite IX with 19–26 long setae; anal point narrow, subparallel-sided, slightly widened apically and bare. Laterosternite IX with 3–7 setae on each side. Transverse sternapodeme without oral projections. Gonocoxite 224–244 µm long; inferior volsella as in Fig. 39. Gonostylus 100–104 µm long, widest in basal two-thirds, strongly narrowing towards tip, apical part slightly curved inwards, covered with few ...