Propsilocerus taimyrus Zelentzov

• Main Authors: Makarchenko, Eugenyi A., Semenchenko, Alexander A.
• Format: Other/Unknown Material
• Language: unknown
• Published: 2023
• Subjects: Biodiversity; Taxonomy; Animalia; Arthropoda; Insecta; Diptera; Chironomidae; Propsilocerus; Propsilocerus taimyrus; Norilsk; Nameless Lake; Alykel; norilsk; Siberia
• Online Access: https://zenodo.org/record/8203731; https://doi.org/10.5281/zenodo.8203731

Propsilocerus taimyrus Zelentzov (Figs. 49–58) Propsilocerus taimyrus Zelentzov, 2000: 1242; Ashe & O’Connor 2012: 503. Propsilocerus saetheri Wang, Liu et Paasivirta, 2007: 310; Ashe & O’Connor 2012: 503. Syn. nov. Material examined. Russia: 2 adult males (paratypes), Eastern Siberia, Krasnoyarsk Territory, 10 km North of Norilsk Airport, Alykel station, nameless lake, 69.380287 N, 87.397822 E, 7.VII.1991, leg. N. Zelentzov. Description Adult male (n = 2). Total length 5–6 mm. Total length/wing length 1.63–1.96. Coloration (slide-mounted material). Dark brown. Head. Eyes bare, reniform. Temporal setae including 10–17 inner verticals (in 2 rows), 4–6 outer verticals and without postorbitals. Clypeus with 20–26 setae. Antenna with 13 flagellomeres and developed plume; terminal flagellomere without subapical setae; AR 1.87–2.2. Palpomeres lengths (in μm): 50–84; 72–96; 132–150; 140–156; 180–200. Palpomeres 1–5 length/head width 1.12–1.15. Thorax. Antepronotum with 17–26 lateral setae. Acrostichals absent, dorsocentrals 69–89, prealars 49–60, supraalars 1–3, preepisternals 38–65, scutellars 38 – 52; posterior anepisternum II with 6–9 setae. All setae except supraalars arranged in 3–5 rows. Wing. Length 2.8–3.5 mm, width 0.60–0.80 mm. R and R 1 with 28–56; R 4+5 with 0–2 setae in distal part. Costa extension 120–190 μm long. Anal lobe developed, outline rounded. Squama with 20–35 setae, 88–100 μm long. VR 1.18–1.30. Legs. Spur of fore tibia 80–96 μm long; spurs of mid tibia 60–66 μm and 63–75 μm; of hind tibia 62–72 μm and 78–102 μm long. Hind tibial comb with 10–11 setae. Lengths and proportions of leg segments as in Table 9. Hypopygium (Figs. 49–58). Tergite IX with 36–55 long setae and narrow, tapering to pointed apex anal point 76–108 μm long, with 6–7 long lateral setae and 4–6 setae at base (Figs. 49, 55–56). Laterosternite IX with 7–10 setae. Phallapodeme 129–180 μm long; transverse stemapodeme 124–186 μm long, with oral projections (Fig. 57). Gonocoxite 392–432 μm long. Superior volsella as in Fig. ...