Chironomus (Chironomus) acidophilus Keyl 1960

• Main Authors: Orel, Oksana V., Lobkova, Ludmila E., Zhirov, Sergey V., Petrova, Ninel A.
• Format: Other/Unknown Material
• Language: unknown
• Published: 2015
• Subjects: Biodiversity; Taxonomy; Animalia; Arthropoda; Insecta; Diptera; Chironomidae; Chironomus; Chironomus acidophilus; Kamchatka Peninsula; Webb; Kamchatka
• Online Access: https://zenodo.org/record/5587270; https://doi.org/10.5281/zenodo.5587270

Chironomus (Chironomus) acidophilus Keyl, 1960 (Figs 2–36) Chironomus meigeni Kieffer sensu Thienemann & Strenzke (1951: 8, fig. 1) —misidentification. Chironomus acidophilus Keyl, 1960: 191; Webb & Scholl (1990: 1, fig. 1 A, B, E, F, fig. 2 A, B, fig. 4 A, fig. 5 A, C, E, fig. 6 A, C, E, fig. 7 A), Wülker (1999: 431); Martin 2015 b. Material. Male, pupa, larva, Russia, Kamchatka Peninsula, Kronotsky Reserve, the Uzon volcanic caldera, Vosmerka Lake, 13.VIII. 2010, leg. L. Lobkova (rearing); female, pupa, larva, the same location, 17–24.VII. 2009, leg. L. Lobkova (rearing); female, pupa, larva, the same location, 03– 13.VIII. 2010, leg. L. Lobkova (rearing); male, pupa, larva, the same location, 07.VIII. 2011, leg. L. Lobkova (rearing); male, pupa, larva, the same location, 08.VIII. 2012, leg. L. Lobkova (rearing); male, pupa, larva, the same location, 16.VI. 2013, leg. L. Lobkova (rearing); larvae, the same location, 05–09.VIII. 2013, leg. L. Lobkova (for karyological research). Diagnostic characters. The imago males of C. acidophilus Keyl 4.5 –6.0 mm long, wing length 2.7 –3.0 mm; flagellum dark brown, AR 2.81–3.06; ground color of thorax and scutellum yellowish, mesonotal stripes and postnotum dark brown, Aps 1 (rarely 0), Ac 15–21, Dc 18–29, Pa 4–6, Scts 27–42, Sq 12–26; abdomen and legs brown or dark brown, sternite II with 12–14 median and 0–4 lateral setae, LRP 1 1.33–1.51, BRP 1 2.78–3.89; tergite IX with 9–14 median setae, anal point expanded in the apical 1 / 3, sometimes widest at about middle, superior volsella S– type, gonostylus widest at proximal 1 / 3. The pupa length 5.8–7.5 mm; tergite VI with X-shaped shagreen, tergite VII with two patches of shagreen in proximal part, tergite VIII with two bands of shagreen laterally; pleura of segment III with several posterolateral spines, pleura of segment IV with longitudinal rows of spinules; paratergites V–VI with a band of spinules; hook row with 53–77 hooks; conjunctives IV/V, V/VI and VI– VII with small spinules, sometimes on conjunctives ...