Parachironomus khatyrka Orel 2017, sp. n.

• Main Author: Orel, Oksana V.
• Format: Other/Unknown Material
• Language: unknown
• Published: 2017
• Subjects: Biodiversity; Taxonomy; Animalia; Arthropoda; Insecta; Diptera; Chironomidae; Parachironomus; Parachironomus khatyrka; Combs; Khatyrka; Chukotka
• Online Access: https://zenodo.org/record/6041559; https://doi.org/10.5281/zenodo.6041559

Parachironomus khatyrka sp. n. (Figs 31–41) Type material. Holotype: male, Russia, Chukotka Autonomous Region, basin of Khatyrka River, Myssovye Lakes, 27.vii.1980, leg. E. Makarchenko. Paratypes: 3 males, same data. Etymology. From the Latin khatyrka, named for the Khatyrka River basin in which the material was collected. Diagnostic characters. The adult male of P. khatyrka sp. n. is distinguished by the following combination of features: frontal tubercles present; wing length 2.7–2.9 mm; AR 3.18; LR P1 1.33; tergite IX with longitudinal anal tergite band; anal point shorter than superior volsella, in lateral view its dorsal contour weakly curved; SVo with long apical projection in the form of a cap; IVo with prominence to median; gonostylus in dorsal view slightly curved, in lateral view expanded in the middle. Adult male (n=3). See also Table 5. Total length 5.0– 5.5 mm. Coloration brown. Head. Frontal tubercles small, 6.8 µm long and 5.1 µm wide. Temporal setae 25–28. Clypeus with 26–33 setae. Antenna 1336 µm long. AR 3.18. Maxillary palpomeres 2–4 combined 724–802 µm long, their individual lengths (in µm): 68; 221–238; 197–224; 238–272. Antenna length/palp length 1.67. Thorax. Antepronotals 6–10, acrostichals 16–25, dorsocentrals 25–28, prealars 6–8, supraalars 1–2. Scutellum with 22–24 setae. Wing. Length 2.7–2.9 mm, without microtrichia. VR 1.08. R with 25–29, R1 with 18–20, R4+5 with 26–27 setae in distal 2/3, M1+2 without setae. Squama with 17–21 setae. Legs. See Table 4. Each mid and hind tibia with 2 fused combs and 2 spurs (length 40 µm). BR P1 9.3, BR P2 4.2, BR P3 9.0. continued. 1.11 1.10 1.09"1.13 1.11"1.19 1.09"1.18 1.08 1.12 setae 23"26 23 24"31 16"34 26, 30 25"29 28"29 15"16 21 21"25 14"26 22, 26 18"20 22"25 +5 30"32 25 25"35 20"34 37, 40 26"27 37 1+2 0 8 0 0"7 17"32 0 0 uamal setae 22 12 21 "31 8"24 15 17"21 13"23 ……continued on the next page Hypopygium (Figs 31–41). Laterosternite IX with 1–4 setae. Anal tergite with median longitudinal band, ventrolateral shoulders on posterior margin ...