|Notice:||This page is derived from the original publication listed below, whose author(s) should always be credited. Further contributors may edit and improve the content of this page and, consequently, need to be credited as well (see
). Any assessment of factual correctness requires a careful review of the original article as well as of subsequent contributions.
If you are uncertain whether your planned contribution is correct or not, we suggest that you use the associated discussion page instead of editing the page directly.
This page should be cited as follows (rationale):
Citation formats to copy and paste
TY - JOUR
See also the citation download page at the journal.
The adult male of the new species can be distinguished from known species of the genus by the following combination of characters: low AR 0.25–0.29; superior volsella rounded.
Male (n = 2).
Total length 1.58–1.98 mm. Wing length 0.86–1.20 mm. Total length/wing length 1.66–1.84. Wing length/length of profemur 1.74–2.61.
Coloration. Head and abdomen yellow brown, thorax without distinct pattern.
Head. Antenna as in Fig. 7. AR 0.25–0.29. Ultimate flagellomere 88–118 μm long. Temporal setae 3–4, including 1–2 inner verticals and 2 outer verticals. Clypeus with 6–12 setae. Tentorium 115–130 μm long, 23–25 μm wide. Stipes 115–118 μm long, 4–5 μm wide. Palpomere lengths (in μm): 48–53, 30–45, 48–60, 68–90, 123–163. L: 5th/3rd 2.56–2.71.
Wing (Fig. 8). Anal lobe normally developed. VR 1.17–1.19. Costal extension 30–38 μm long. Brachiolum with 1 seta. R with 1–3 setae. Remaining veins bare. Squama with 2 setae. Thorax (Fig. 9). Antepronotum with 4 lateral setae. Dorsocentrals 6–11; acrostichals 6–8, prealars 3. Scutellum with 2–6 setae. Humeral pit moderately large, ovoid.
Legs. Spur of fore tibia 23–40 μm long; spurs of mid tibia 13–18 μm long and 12–15 μm long; spurs of hind tibia 27–38 μm and 13–15 μm long. Hind tibial comb with 8–16 spines, 13–27 μm long. Width at apex of fore tibia 25–40 mm, of mid tibia 25–38 mm, of hind tibia 23–40 mm. Lengths and proportions of legs as in Table 3.
Holotype: ♂ (BDN. G5A42), China, Zhejiang Province, Jinhua City, Pan’an County, Dapanshan National Nature Reserve, 28°98'02"N, 120°52'63"E, 18.vii.2012, sweeping, Lin XL. Paratype (1): 1♂, Yunnan Province, Dali Bai Autonomous Prefecture, Eryuan County, Niujie Town, 26°25'55"N, 99°98'90"E, sweeping, Wang BX.
The specific name is an adjective, from Latin rotundus, meaning rounded, referring to rounded superior volsella.
The new species resembles Rheocricotopus (Psilocricotopus) notabilits Caspers, 1987 in the following combination of characters: low AR; humeral pit medium, ovoid; the shape of anal point. But the new species can be separated from latter species on the basis of following characters: (1) costal extension of the new species (30–38 μm) much shorter than Rheocricotopus (Psilocricotopus) notabilits Caspers (72 μm); (2) anal lobe of the new species developed, which reduced in Rheocricotopus (Psilocricotopus) notabilits Caspers; and (3) crista dorsalis of the new species distinct, triangular subapical, which pronounced, rounded in Rheocricotopus (Psilocricotopus) notabilits Caspers.
Female and immature stages unknown.
- Liu, W; Lin, X; Wang, X; 2014: A review of Rheocricotopus (Psilocricotopus) chalybeatus species group from China, with the description of three new species (Diptera, Chironomidae) ZooKeys, 388: 17-34. doi