Chironomus lundstroemi Saether, 2004, sp. n.

• Main Author: Saether, Ole A.
• Format: Other/Unknown Material
• Language: unknown
• Published: 2004
• Subjects: Biodiversity; Taxonomy; Animalia; Arthropoda; Insecta; Diptera; Chironomidae; Chironomus; Chironomus lundstroemi; Arctic
• Online Access: https://zenodo.org/record/6271168; https://doi.org/10.5281/zenodo.6271168

Chironomus lundstroemi sp. n. (Figs. 1, 2, 7) Chironomus staegeri Lundb. sensu Lundström (1915: 6), not Lundbeck, 1898 Type material. Holotype ɗ: RUSSIA: Chara­Ullach Mts., 30 vi 1902, M. I. Brussnew. Paratype: Ψ, Jana area, Seljach river, 3–7 vi 1908 [21 (8) vi 1908 in Lundström], K. A. Wollosowitsch. Both deposited at Zoological Institute, Russian Academy of Science, St. Petersburg. Diagnostic characters. The male imago is characterised by a broad anal point tapered from base to tip; large frontal tubercles with conspicuous microtrichia with distinct bases, frons also densely microtrichiose; superior volsella tapering to a point, but with a distinct apical fold; fore leg ratio about 1.14; antennal ratio about 5.0; about 80 dorsocentrals and about 60 scutellars. The female imago has about 98 sensilla chaetica on mid ta 1 and at least 75 on hind ta 1; gonocoxite with 8 setae, tergite IX with 114 setae and segment X with 16 setae. MALE IMAGO (n = 1) Total length 8.33 mm. Wing length 5.15 mm. Total length/wing length 1.62. Wing length/length of profemur 3.01. Coloration brown with darker markings; abdomen with darker longitudinal, median band on all tergites. Head. AR 5.00. Ultimate flagellomere 1843 m long. Dorsal interocular distance 189 m, ventral interocular distance 340 m. Frontal tubercle 45 m high, 15 m wide, with conspicuous microtrichia with distinct bases. Frons with dense and long microtrichia only posterior near tubercles, shorter and more scattered anteriorly. Temporal setae 36, consisting of 12 inner verticals, 12 outer verticals and 12 postorbitals. Clypeus with about 75 setae. Tentorium 360 m long, 94 m wide; stipes 345 m long, 180 m wide. Palpomere lengths (in m): 105, 113, 360, 311, 420. Third palpomere with 4 thin, lanceolate, 38 m long sensilla clavata. Thorax. Antepronotal setae apparently absent. Acrostichals not countable, dorsocentrals about 80, prealars 19, supraalars 2. Scutellum with about 60 setae. Wing. VR 1.01. Brachiolum with 4 setae, R with 26, R 1 with 34, R 4 + 5 with 7 setae, ...