Diamesa kownackii Makarchenko & Semenchenko & Palatov 2022, sp. nov.

• Main Authors: Makarchenko, Eugenyi A., Semenchenko, Alexander A., Palatov, Dmitry M.
• Format: Other/Unknown Material
• Language: unknown
• Published: 2022
• Subjects: Biodiversity; Taxonomy; Animalia; Arthropoda; Insecta; Diptera; Chironomidae; Diamesa; Diamesa kownackii; Anadyr; Anadyr’; Black Head; Wrangel Island; Anadyr'; Chukotka; Koryak
• Online Access: https://zenodo.org/record/6458131; https://doi.org/10.5281/zenodo.6458131

Diamesa kownackii Makarchenko, sp. nov. http://zoobank.org/NomenclaturalActs/ 4601893D-170C-427C-8F19-AEED2CA46FB2 (Figs. 9–14, 31, 69–70) Diamesa steinboecki Goetghebuer; Makarchenko et al, 1980: 6; 1981: 96; 1985: 71; 2006: 261, 472, 614, misidentification. Type material. Holotype, adult male, RUSSIA: Chukotka Autonomous Region, Wrangel Island, unnamed stream in upper part of Somnitelnaya River, altitude 205–210 m above sea level, 22.VII.1978, N 70.995783, W 179.539117, leg. E. Makarchenko. Paratypes: 52 adult males, 23 pupae, 28 larvae, the same data as holotype, except 22.VII– 15.VIII.1978; 9 adult males, 14 pupae, 33 larvae, the same data as holotype, except 7–10.VIII. 1979; 5 adult males, the same data as holotype, except Khishnikov River, 17.VIII.1978, leg. E. Makarchenko; 2 adult males, Chukotka Autonomous Region, Anadyr District, northeastern spurs of the Koryak Highlands, unnamed stream of Gytgylveirgytgyn Lake basin (Velikaya River basin), 29.VII.1980, altitude ca 300 m above sea level, N 62.962222, E 171.805833, leg. E. Makarchenko. Derivatio nominis. The species is named in honor of the Polish chironomid taxonomist and hydrobiologist Dr. Andrzej Kownacki, a leading specialist on Caucasian Diamesinae, namely of Diamesa steinboecki group. Description Adult male (n = 10, except when otherwise stated). Total length 4.2–5.2 mm. Total length/wing length 1.27– 1.75. Coloration. Dark brown to black. Head brown. Thorax black. Legs brown. Abdomen dark brown to black. Wings grey. Head (Fig. 9). Eyes hairy, reniform. Temporal setae including 0 frontals, 4–9 orbitals, 6–9 verticals and 5–6 postorbitals; frontals absent. Clypeus with 2–5 setae. Antenna with 8 flagellomeres and reduced plume of setae; number and length of these setae on 1–7 flagellomeres respectively: 2–3 (26–28 μm), 1–2 (18–32 μm), 3–5 (40–68 μm), 3 (32–44 μm); terminal flagellomere with 2 setae, 20–24 μm long in subapical and apical area. Length of 1–8 flagellomeres (μm): 105–118, 42–53, 42–46, 29–38, 29–38, 25–34, 29–38, 130–160; AR 0.38–0.50. ...