Sweltsa wui Stark & Sivec 2009, sp. n.
In: Sweltsa Wui And Haploperla Valentinae (Plecoptera: Chloroperlidae), Two New Stoneflies From Sichuan Province, China, pp. 156-163 in Illiesia 5(14) 157-162, 2009, S. 156-163
unknown
Zugriff:
Sweltsa wui sp. n. (Figs. 1-8) Material examined. Holotype ♂ and 3 ♂ paratypes from China, Sichuan Province, Pitiao River, Welong, Balangshan Pass, 2700-4000 m, 1-4 June 1991, B. Horvat & I. Sivec (PMSL, 1 paratype-BPS). Adult habitus. General color pale yellow in alcohol but with a distinctive, narrowly divided, median, pronotal band (Fig. 1) and obscure interocellar brown spot; meso and metathoracic notae with dark brown U-patterns, and abdomen bearing a continuous brown longitudinal band on segments 1-8; tergum 9 with a small, basal dumbbell shaped brown spot. Wings transparent, legs pale. Male. Forewing length 9.5 mm. Tergum 9 without transverse process and without median excavation on posterior margin (Figs. 5-6). Epiproct about 2.5 X longer than basal width, rod-like but with lateral margins slightly constricted from near base to apical third. Epiproct length ca. 343 µm, subapical width ca. 129 µm, basal width ca. 138 µm, width at narrowest point ca. 71 µm. Epiproct apex a smooth, sclerotized cap but most of dorsal and ventral surface covered with golden brown, closely appressed setae (Figs. 2- 4, 5-8); base with dorsal and lateral bare areas (Figs. 6-7). Epiproct apex slightly inflated in lateral aspect (Figs. 4, 7). Female. Unknown. Larva. Unknown. Etymology. We dedicate this species to the late Professor Dr. C.F. Wu in recognition of his enormous contribution to the knowledge of Chinese Plecoptera. Diagnosis. This species is similar in pronotal pigment pattern to Sweltsa insularis (Zhiltzova & Levanidova 1978), S. nikkoensis (Okamoto) (Ham 2008), and also to the Japanese species S. abdominalis (Okamoto) and S. sapporoensis (Okamoto), however the general shape and setal pattern of the epiproct is different among these species [except S. sapporensis (Figs. 22-24) and S. nikkoensis (Figs. 25-27) which are quite similar]. Sweltsa wui is the only known Asian species in which the epiproct apex is as wide as, or wider than, the base (Figs. 5-6). The species of genus Sweltsa are quite variable in ...
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Sweltsa wui Stark & Sivec 2009, sp. n.
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Autor/in / Beteiligte Person: | Stark, Bill P. ; Sivec, Ignac |
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Zeitschrift: | Sweltsa Wui And Haploperla Valentinae (Plecoptera: Chloroperlidae), Two New Stoneflies From Sichuan Province, China, pp. 156-163 in Illiesia 5(14) 157-162, 2009, S. 156-163 |
Veröffentlichung: | 2009 |
Medientyp: | unknown |
DOI: | 10.5281/zenodo.4765867 |
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