Neozavrelia oyabeparvulus

• Main Author: Orel, Oksana V.
• Format: Other/Unknown Material
• Language: unknown
• Published: 2021
• Subjects: Biodiversity; Taxonomy; Animalia; Arthropoda; Insecta; Diptera; Chironomidae; Neozavrelia; Neozavrelia oyabeparvulus; Combs; Seta; Sakhalin
• Online Access: https://zenodo.org/record/4582314; https://doi.org/10.5281/zenodo.4582314

Neozavrelia oyabeparvulus (Sasa, Kawai, Ueno, 1988) (Figs 77–87) Tanytarsus oyabeparvulus Sasa, Kawai, Ueno, 1988: 41, Plate 7A. Comb. nov. Tanytarsus okamotoi Sasa, 1989: 41–42, Fig. 14, Plate 7. Comb. nov., syn. nov. Material examined. 8 males, RUSSIA, SAKHALIN OBLAST, Sakhalin Island, Korsakovsky District, Vavayskoye Lake, 5–15.vii.2004, leg. E. Makarchenko. Description. Adult male (n=3). Total length 1.50–1.75 mm; wing length 1.11–1.12 mm. Total length/wing length 1.35–1.56. Colouration. Ground colour of thorax, maxillary palpomeres, scutellum, abdomen and legs yellowish brown; halters yellowish; antenna, scutal stripes, median band on distal half of mesonotum and postnotum brown. Head (Figs 82–83). Frontal tubercles minute, 3 μm long and 4 μm wide. Temporal setae 8–10. Clypeus with 8–10 setae. Antenna with 13 flagellomeres, 570–600 μm long; ultimate flagellomere 220–225 μm. AR 0.60–0.63. Maxillary palpomeres 2–4 combined 290–325 μm long, their individual lengths (in μm): 35–45: 75–90: 75–90: 105–120. Antenna length/palp length 1.85–1.97. Thorax. Acrostichals 11–16, dorsocentrals 4–6, prealar 1. Scutellum with 4 setae. Wing width 0.29–0.33 mm (Figs 84–85). VR 1.29–1.31. R with 16–20, R 1 with 4–6, R 4+5 with 7, M 1+2 with 17–27, M 3+4 with 4–6, Cu 1 with 3–11 setae, An with 8–13, Vf with 13–20 setae. Cell r 2+3, r 4+5, m 1+2, m 3+4 with setae. Brachiolum with 1 seta. Legs (see Table 11). Apical curved tibial spur of fore leg 22–24 μm long. Combs of mid and hind tibiae separated; each comb bears straight or slightly curved spur, 14–22 μm (mid tibia) to 20–24 μm long (hind tibia). Basitarsus of mid leg without sensilla chaetica. Hypopygium (Figs 77–79, 86–87). Anal tergite with H-shaped bands which reach base of anal point, central part of tergite IX covered with microtrichia and with 5–7 lateral setae on each side, free-microtrichia areas present on the sides of anal tergite bands. The anal point (22–24 μm long and 20 μm wide in the base and 16 μm wide on the apex) broad, parallel-sided or triangular form, ...