Cladotanytarsus crassus, a new North American non-biting midge with a distinctive hypopygial digitus (Diptera: Chironomidae)

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Cladotanytarsus (Cladotanytarsus) crassus sp. n. is described from the USA (Oregon, Wyoming) and Canada (Ontario). The distinctive structure of the adult male hypopygium, bearing a thickset digitus and a stout elongated superior volsella, is presented. Intraspecific morphological variations are described in order to compare C. crassus and C. nigrovittatus (Goetghebuer, 1922), treated as close relatives. The geographical distribution and ecology of the two species are commented on.

Bilyj B., Davies I.J. 1989. Descriptions and ecological notes on seven new species of Cladotanytarsus (Chironomidae: Diptera) collected from an experimentally acidified lake. Canadian Journal of Zoology, 67 (4): 948–962.

Brundin L. 1947. Zur Kenntnis der Schwedischen Chironomiden. Arkiv för Zoologi, 39 (3): 1–95.

Dantas G.P.S., Giłka W. 2017. New Tanytarsus van der Wulp from the Brazilian Amazonia indicate clues to intrageneric relations (Diptera: Chironomidae). Zootaxa, 4294 (2): 281–291.

Ekrem T. 2001. A review of Afrotropical Tanytarsus van der Wulp (Diptera: Chironomidae). Tijdschrift voor Entomologie, 144 (1): 5–40.

Ekrem T. 2007. A taxonomic revision of the genus Stempellinella (Diptera: Chironomidae). Journal of Natural History, 41: 1367–1465.

Ekrem T., Stur E. 2009. A review of the genus Zavrelia (Diptera: Chironomidae). European Journal of Entomology, 106 (1): 119–144.

Ekrem T., Sublette M.F., Sublette J.E. 2003. North American Tanytarsus I. Descriptions and keys to species in the eminulus, gregarius, lugens and mendax species groups (Diptera: Chironomidae). Annals of the Entomological Society of America, 96 (3): 265–328.

Giłka W. 2001. A review of Polish Cladotanytarsus Kieffer (Diptera: Chironomidae) with description of three new species. Polish Journal of Entomology, 70 (4): 307–328.

Giłka W. 2002. Tanytarsini (Diptera: Chironomidae) of Poland – a faunistic review. Polish Journal of Entomology, 71 (4): 415–428.

Giłka W. 2005. A systematic review of European Stempellina Thienemann et Bause, 1913 (Diptera: Chironomidae) with description of a new species from Fennoscandia. Annales Zoologici, 55 (3): 413–419.

Giłka W. 2008. A rapid technique of producing spatial colour illustrations of diagnostic structures in small dipterans. Dipteron, 24: 8–10.

Giłka W. 2011a. Non-biting midges – Chironomidae, tribe Tanytarsini, adult males. Keys for the Identification of Polish Insects. No 177. Part XXVIII, Dipterans – Diptera, Issue 14b. Polskie Towarzystwo Entomologiczne. Biologica Silesiae, Wrocław. (in Polish)

Giłka W. 2011b. Six unusual Cladotanytarsus Kieffer: towards a systematics of the genus and resurrection of Lenziella Kieffer (Diptera: Chironomidae: Tanytarsini). Zootaxa, 3100: 1–34.

Giłka W. 2011c. Analysis of faunistic diversity in chironomids of the tribe Tanytarsini in Europe (Diptera: Chironomidae). Dipteron, 27: 11–31. (in Polish)

Giłka W., Paasivirta L. 2007. Two new species of the genus Tanytarsus van der Wulp (Diptera: Chironomidae) from Fennoscandia. [in:] T. Andersen (ed.). Contributions to the Systematics and Ecology of Aquatic Diptera – A Tribute to Ole A. Sæther. The Caddis Press, Columbus, Ohio, 107–113.

Giłka W., Zakrzewska M., Dominiak P., Urbanek A. 2013. Non-biting midges of the tribe Tanytarsini in Eocene amber from the Rovno region (Ukraine): a pioneer systematic study with notes on the phylogeny (Diptera: Chironomidae). Zootaxa, 3736 (5): 569–586.

Goetghebuer M. 1922. Nouveaux matériaux pour l’étude de la fauna de Chironomides de Belgique. Annales de biologie lacustre, 11: 38–62.

Hirvenoja M. 1962. Cladotanytarsus-Arten (Dipt., Chironomidae) aus Finnisch-Lappand. Annales Entomologici Fennici, 28: 173–181.

Kyerematen R.A.K., Sæther O.A. 2000. A review of Afrotropical Rheotanytarsus Thienemann et Bause, 1913 (Diptera: Chironomidae). Tijdschrift voor Entomologie, 143 (1-2): 27–69.

Lin X., Stur E., Ekrem T. 2017. DNA barcodes and morphology reveal unrecognized species in Chironomidae (Diptera). Insect Systematics & Evolution, DOI 10.1163/1876312X-00002172, pp. 1–70.

Lindeberg B. 1964. The swarm of males as a unit for taxonomic recognition in the Chironomids (Diptera). Annales Zoologici Fennici, 1 (1): 72–76.

Makarchenko E.A., Makarchenko M.A., Zorina O.V., Sergeeva L.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. (in Russian)

Mazumdar A., Hazra N., Chaudhuri P.K. 2000. New species of Cladotanytarsus Kieffer from the Deltaic region of West Bengal, India (Diptera: Chironomidae). Oriental Insects, 34 (1): 193–202.

Oliver D.R., Dillon M.E. 1997. Chironomids (Diptera: Chironomidae) of the Yukon Arctic North Slope and Herschel Island. [in:] H.V. Danks, J.A. Downes (eds.) Insects of the Yukon. Biological survey of Canada (terrestrial arthropods), Ottawa, 615–635.

Puchalski M., Giłka W. 2017a. Cladotanytarsus Kieffer (Diptera: Chironomidae): several distinctive species reviewed on the basis of records from Canada and USA. Zootaxa, 4242 (2): 344–358.

Puchalski M., Giłka W. 2017b. A new species of Cladotanytarsus (Lenziella) from Oregon supports the systematic concept of the subgenus (Diptera: Chironomidae). Zootaxa, 4268 (4): 573–580.

Puchalski M., Paasivirta L., Giłka W. 2018. Cladotanytarsus saetheri sp. nov. and C. gedanicus Giłka: Holarctic sibling species (Diptera: Chironomidae). Zootaxa, 4394 (3): 428–436.

Puchalski M., Zakrzewska M., Giłka W. 2017. Cladotanytarsus Kieffer (Diptera: Chironomidae): exploring the species richness. The 9th Central European Dipterological Conference. Kostelec nad Černými Lesy, Czech Republic. Internet:

Reiss F., Säwedal L. 1981. Key to males and pupae of Palaearctic (excl. Japan) Paratanytarsus Thienemann, Bause 1913, n. comb., with description of three new species (Diptera, Chironomidae). Entomologica scandinavica, Suppl. 15: 73–104.

Ruse L.P. 2015. Even more chironomid species classifying lake nutrient status. European Journal of Environmental Sciences, 5 (1): 80–85.

Sæther O.A. 1971. Four new and unusual Chironomidae (Diptera). Canadian Entomologist 103(12): 1799–1827.

Sæther O.A. 1980. Glossary of chironomid morphology terminology (Diptera: Chironomidae). Entomologica scandinavica, Suppl. 14: 1–51.

Sanseverino A. 2006. A review of the genus Tanytarsus van der Wulp, 1874 (Insecta, Diptera, Chironomidae) from the Neotropical Region. PhD Thesis, Fakultät für Biologie, Ludwig-Maximilians-Universität München, München. Intrenet: (accessed: May 2018).

Stur E., Ekrem T. 2006. A revision of West Palaearctic species of the Micropsectra atrofasciata species group (Diptera: Chironomidae). Zoological Journal of the Linnean Society, 146 (2): 165–225.

Wang X., Guo Y. 2004. A review of the genus Cladotanytarsus Kieffer from China, with the description of three new species (Diptera: Chironomidae: Tanytarsini). Zootaxa, 750: 1–19.

Zakrzewska M., Giłka W. 2014. The oldest known chironomids of the tribe Tanytarsini (Diptera: Chironomidae) indicate plesiomorphic character states. Geobios, 47 (5): 335–343.

Zakrzewska M., Krzemiński W., Giłka W. 2016. Towards the diversity of non-biting midges of the tribe Tanytarsini from Eocene Baltic amber (Diptera: Chironomidae). Palaeontologia Electronica, 19.2.18A: 1–21.

Zakrzewska M., Stebner F., Puchalski M., Singh H., Giłka W. 2018. A peculiar leg structure in the first non-biting midge described from Cambay amber, India (Diptera: Chironomidae). Earth and Environmental Science Transactions of the Royal Society of Edinburgh, 107 (2-3): 255–261.

Polish Journal of Entomology

Polskie Pismo Entomologiczne; The Journal of Polish Entomological Society

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