Cryptochironomus imitans Saether, 2009, sp. n.

• Main Author: Saether, Ole A.
• Format: Other/Unknown Material
• Language: unknown
• Published: 2009
• Subjects: Biodiversity; Taxonomy; Animalia; Arthropoda; Insecta; Diptera; Chironomidae; Cryptochironomus; Cryptochironomus imitans; Canada; Seta; Long Point; Beaver Creek
• Online Access: https://zenodo.org/record/6220742; https://doi.org/10.5281/zenodo.6220742

Cryptochironomus imitans sp. n. (Fig. 4 B–D; 7) Cryptochironomus sp. n. A, Chang et al. 1993. Cryptochironomus sp. n. C, Chang et al. 1994. Type material. Holotype male, CANADA: Quebec, Gatineau Park, Lusk Cave, reared from larva, on logs in pool inside cave, 29.vi. 1966, A.L. Hamilton and J. Martin (CNC). Paratypes: CANADA: Manitoba, Pinawa, Winnipeg River, female reared from larva, 2.vii 1967, J. Ireland; Ontario, Lake Ontario, Bay of Quinte, Halton, male reared from pupa, 29.vii. 1968, W.F. Warwick; Ontario, Kenora, Experimental Lakes Area, Lake 172, mature male pupa, 26.vii 1968, S.S. Chang; Lake Winnipeg records: Pine Dock, 20 males, 10. & 31.vii. 1969; 3 km off Grand Rapids, 1 male, 13.vii. 1969; 10 km off (Sturgeonskin) Long Point, 3 males, 14.vii. 1969; Gull Harbour, 1 males, 16.vii. 1969; Victoria Beach, 3 males, 25.vii. 1969; Grand Rapids Government Wharf, 5 males, 28.vii. 1969; Beaver Point, 2 males, 30.vi.– 19.viii. 1971; Old Fishing Dock, 8 males, 29.vi.– 18.viii. 1971; Hecla Island, 2 males, 24 & 25.viii. 1971; Beaver Creek, 1 male, 8.vi. 1971; 3 km southeast Bushgega Island, 1 male, 31.vii. 1969; North Basin, 1 larva, 9.vii. 1969. Diagnostic characters. The imagines are characterized by a wing length of 2.02–2.81, male AR of 2.52– 3.05, LR 1 of 1.56–1.83, presence of as long as wide to twice as is long as wide frontal tubercles or at least of ocelli, and hypopygium of C. fulvus type. The female has 7 sensilla chaeticae on mid leg, 3 on hind leg; gonocoxite IX without setae; and segment X with 3 setae on each side. The pupa is 5.1–6.3 mm long; has a simple 0.10–0.14 mm long cephalic tubercle with 31–60 µm long frontal seta; T I with distinct, T II–III with weak, and T IV–VI with barely indicated reticulation; caudal spines on T II–VII or VIII and S II–VIII; and 39–52 filaments in fringe of anal lobe. The fourth instar larva has a head capsule length of about 0.43–0.44 mm, a postmentum length of about 160–180 µm, ventromental plates 2.6–2.7 times as wide as long, AR of 1.0– 1.2, and apical ...