Contribution to the knowledge of female west palaearctic Glyptotendipes Kieff. (Diptera, Nematocera, Chironomidae)

Abstract

The characters of the genitalia of the females of Glyptotendipes glaucus (Meigen, 1818), Glyptotendipes pallens (Meigen, 1804), Glyptotendipes paripes (Edwards, 1929), Glyptotendipes gripekoveni (Kieffer, 1913), Glyptotendipes aequalis (Kieffer, 1922), Glyptotendipes barbipes (Staeger, 1839) and Glyptotendipes salinus Michailova, 1987 are described . A key for the identification of these species is given .The taxonomic status of Glyptotendipes aequalis is discussed .

Notes and recommendations on taxonomy and nomenclature of Chironomidae (Diptera)

“…Abdominal tergal mark lengths increasing from TII to TVI; mark length ratios TIII/II = 1.22, TVI/II = 1.68, TVI/IV = 1.32, TVI/V = 1.22; mark on TII covers about 0.25 of tergite length, on TIII-V about 0.35, on TVI 0.43. Genitalia generally similar to Contreras-Lichtenberg (1996: fig. 5, sub G. barbipes); sternite VIII setae near ventromedian ends of gonocoxapodeme more densely set than on remainder of sternite; gonapophysis VIII with 'ventrolateral' lobe smaller than 'dorsomesal' lobe (ventral end of base of 'dorsomesal' lobe located at mesal corner of sternite VIII, thus 'dorsomesal' lobe base extends farther ventrad than entire 'ventrolateral' lobe), apodeme lobe slightly longer and darker than 'ventrolateral' lobe, distally with numerous projecting microtrichia; gonocoxite IX with 4-5 setae; segment X with 7-8 lateral setae in partially double row; postgenital plate a littledefined, large, wide triangle, ratio basal width/length about 1.2.…”

“…However, the respective descriptions of either species in the quoted works differ in some details, for example the lobes of female gonapophysis VIII. According to Saether (1977), G. paripes has the ventrolateral lobe smaller than the dorsomesal one, whereas according to Contreras-Lichtenberg (1996 the ventrolateral lobe is considerably larger. Apparently, no female syntype from Staeger's or Edwards' respective material has been examined by the above-quoted authors.…”

“…In the taxonomic group containing G. verrucosus, adult females make useful namebearing type specimens, because the species can be distinguished by unique character combinations (e.g. Saether, 1977;Rodova, 1978;Contreras-Lichtenberg, 1996. Therefore, in the interest of stability in the nomenclature of Glyptotendipes Kieffer, and considering the type species status and the mixed type specimen series, a lectotype for Chironomus verrucosus Kieffer, 1911 is designated here, as follows: adult female (on slide, dissected, in Euparal, at BMNH); collection data on label: "INDIA: Kumaon, / Bhim Tal, 4,500', / 22-27.IX.1906.…”

“…The lectotype of Glyptotendipes verrucosus (Kieffer) matches no species concept currently held in the western Palaearctic. From the characterizations in Saether (1977), Rodova (1978), and Contreras-Lichtenberg (1996, the species most similar overall are G. barbipes (Staeger, 1839) and G. paripes (Edwards, 1929). However, the respective descriptions of either species in the quoted works differ in some details, for example the lobes of female gonapophysis VIII.…”

Cytogenetic analysis of a hybrid, Glyptotendipes pallens Mg. ×Glyptotendipes glaucus Mg. (Diptera, Chironomidae): evolutionary considerations

“…For a long period of time both of the species names Glyptotendipes glaucus and Glyptotendipes pallens have been considered as synonyms (Goetghebuer and Lenz 1937;Kalugina 1963). Later, a detailed analysis of all stages of metamorphosis as well as a comparison of chromosomes clearly indicated that they are two different sibling species (Michailova and Contreras-Lichtenberg 1995;Contreras-Lichtenberg 1996). The aim of this research was to trace back the path of speciation of these two sibling species on the basis of the cytogenetic characteristics of the species and their experimental hybrid.…”