Demicryptochironomus (Demicryptochironomus) chuzequartus Sasa 1984

• Main Authors: Yan, Chuncai, Saether, Ole A., Jin, Zhaohui, Wang, Xinhua
• Format: Text
• Language: unknown
• Published: Zenodo 2008
• Subjects: Biodiversity; Taxonomy; Animalia; Arthropoda; Insecta; Diptera; Chironomidae; Demicryptochironomus; Demicryptochironomus chuzequartus; Indian; Sergeeva; Sakhalin
• Online Access: https://dx.doi.org/10.5281/zenodo.5242843; https://zenodo.org/record/5242843

Demicryptochironomus (Demicryptochironomus) chuzequartus Sasa (Figs 4–6) Demicryptochironomus chuzequartus Sasa, 1984: 47; Sasa (1985: 111, 1989: 70); Zorina (2004: 225); Makarchenko et al . (2005: 409). Material examined. Holotype male (NSM No. A 39: 96), JAPAN: Lake Chuzenji, 28.iv.1979, M. Sasa. Diagnostic characters. The species can be distinguished by the following combination of characters: AR 2.93; LR 1 1.60; frontal tubercles prominent; both superior and inferior volsella tubercle-like, with 1–3 setae, lacking microtrichia. Male (Figs 4–6). As in Sasa (1984: 47) with the following corrections and additions: Brachiolum with 2 setae, R with 26 setae, R 1 with 22 setae, R 4+5 with 34 setae. Mid ta 1 with 3 sensilla chaetica. Tergite IX with 39 setae. Laterosternite IX with 7 setae. Anal tergite bands V-shaped. Phallapodeme 108 µm long. Transverse sternapodeme 48 µm long. Superior volsella with 1–2 setae, without microtrichia. Inferior volsella with 2–3 setae, without microtrichia. Gonocoxite 183 µm long, inner margin with 5 strong setae. Gonostylus 235 µm long, swollen medially, tapering towards apex, inner margin with 12 setae. HR 0.78; HV 2.63. Remarks. Without examining type material, Dutta et al . (1996) proposed that D. chuzequartus Sasa is as a synonym of Demicryptochironomus vulneratus (Zetterstedt). However, according to our examination the species should be retained as a valid species. Zorina (2004) recorded the species from Sakhalin Island, Russia. The Russian specimens have the superior volsella covered with microtrichia, and the inferior volsella can be strongly reduced or absent. Distribution. The species is recorded from Japan and the Russian Far East. : Published as part of Yan, Chuncai, Saether, Ole A., Jin, Zhaohui & Wang, Xinhua, 2008, Three new species of the Harnischia complex from the Sino-Indian Region, with a review of Demicryptochironomus Lenz (Diptera: Chironomidae), pp. 1-22 in Zootaxa 1968 on pages 6-7 : {"references": ["Sasa, M. (1984) Studies on Chironomid midges in lakes of the Nikko National Park. Part II: Taxonomical and morphological studies on the Chironomid species collected from lakes in the Nikko National Park. Research Report from the National Institute for Environmental Studies, 70, 19 - 215.", "Sasa, M. (1985) Studies on Chironomid midges of some lakes in Japan. Part III: Studies on the Chironomids collected from lakes in the Mount Fuji area (Diptera, Chironomidae). Research Report from the National Institute for Environmental Studies, 83, 101 - 160.", "Sasa, M. (1989) Some characteristics of nature conservation within the chief rivers in Toyama Prefecture (The Upper Reach of Shou River). Research Report from Toyama Prefectural Environmental Pollution Research Centre, 1989, 1 - 110.", "Zorina, O. V. (2004) New and little known species of the genus Demicryptochironomus Lenz (Diptera, Chironomidae) from Sakhalin Island. In: Bogatov, V. V., Barkalov, V. Yu., Lelej, A. S., Makarchenko, E. A. & Stolozhenko, S. Yu (Eds), Flora and fauna of Sakhalin Island (Materials of international Sakhalin Island Project). Part I. Dalnauka, Vladivostok, pp. 224 - 237. [In Russian with English summary.]", "Makarchenko, E. A., Makarchenko, M. A., Zorina, O. V. & Sergeeva, I. V. (2005) Preliminary data on fauna and taxonomy of Chironomids (Diptera, Chironomidae) of the Russian Far East. Vladimir Ya. Levanidov's Biennial Memorial Meetings, 3, 394 - 420.", "Dutta, T. K., Ali, A., Mazumdar, A. & Chaudhuri, P. K. (1996) Chironomid midges of Harnischia complex (Diptera: Chironomidae) from the Duars of the Himalayas India. European Journal of Entomology, 93, 263 - 279."]}