Olecryptotendipes Zorina, 2007

Orel, Oksana V., 2022, Additional data on Olecryptotendipes secundus (Zorina, 2003) from Russian Far East, with a description of preimaginal stages (Diptera: Chironomidae), Zootaxa 5205 (1), pp. 87-96 : 88

Olecryptotendipes Zorina, 2007

Cryptochironomus Kieffer, 1918: 48 ; Lyachov, 1941: 591; Chernovsky, 1949, 53; Konstantinov, 1950: 154; Pankratova, 1983: 169; Moller Pillot, 2009: 93–94; Orendt & Spies, 2012: 59

Cryptotendipes Beck & Beck, 1929: 294 ; Zorina, 2001, 2003

Harnischia complex genus C Epler, 1995: 7, 122; Epler, 2001: 8, 176; Epler et al. 2013: 442

Chironomini gen.? sp.? Pe 5 Langton & Visser, 2003: 334

Olecryptotendipes Zorina, 2007: 347 ; Saether & Spies, 2013; Vallenduuk, 2019: 182; Yan et al. 2012: 41; Yan et al. 2017: 291; Mukherjee & Hazra, 2022: 330

Type species: Cryptotendipes lenzi Zorina, 2001 .

Other included species: Olecryptotendipes arienus Yan et Wang, 2017 , Olecryptotendipes exilis Yan, Wang et Bu, 2012 , Olecryptotendipes extentus Mukherjee et Hazra, 2022 , Olecryptotendipes macropodus ( Lyakhov, 1941) , Olecryptotendipes melasmus Yan, Wang et Bu, 2012 , Olecryptotendipes obtunsus Mukherjee et Hazra, 2022 , Olecryptotendipes secundus ( Zorina, 2003) , and Harnischia complex genus C sp. Epler, 1995.

Diagnosis. The following combination of characters will separate the genus Olecryptotendipes Zorina from other members of the Harnischia complex:

Male: frontal tubercles absent; thorax and legs with or without spots; AR 1.13–2.24; acrostichals present, sometimes absent; squama with 0–5 setae; hypopygium with Y-type band, rarely separated medially; posterior part of tergite IX elongated with setae, sometimes with caudolateral shoulders; superior volsella with sclerotised part and membranous ridge, with 1–2 dorsal and 1 ventral setae, microtrichia absent or present; inferior volsella absent or reduced; gonostylus curved medially or in distal third.

Pupa with well developed frontal tubercles; frontal setae present or reduced to short rod-shaped outgrowths apically serrated; thoracic horn plumose; hook row widely interrupted medially; pedes spurii B present on segment I anteriorly; pedes spurii B absent on tergite II; sternites IV with pedes spurii A; tergites II–V with rectangular patches of shagreen or tergites II–VI or I–VI a median longitudinal band of spines; posterolateral comb or spur absent.

Larval body consisting of 20 apparent segments; anterior parapods with large claws; posterior parapods thin and elongated; antenna with 6 segments; pecten epipharyngis a simple scale with median notch apically or a triangular serrated scale or consists of 3 scales, median one slightly longer than lateral ones; premandible with 2 apical and 1–2 teeth in base, brush absent; mandible with sickle-shaped dorsal tooth, apical tooth and 2–3 inner teeth; seta interna present (with 4–6 simple branches) or absent; mentum with pale triangular median tooth and 6–7 pairs of yellowish brown lateral teeth or 2 median teeth and 5 pairs lateral teeth.