Rheocricotopus serratus

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This page should be cited as follows (rationale):
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. Versioned wiki page: 2014-03-12, version 42638, https://species-id.net/w/index.php?title=Rheocricotopus_serratus&oldid=42638 , contributors (alphabetical order): Pensoft Publishers.

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BibTeX:

@article{Liu2014ZooKeys388,
author = {Liu, Wenbin, Lin, Xiaolong AND Wang, Xinhua},
journal = {ZooKeys},
publisher = {Pensoft Publishers},
title = {A review of Rheocricotopus (Psilocricotopus) chalybeatus species group from China, with the description of three new species (Diptera, Chironomidae)},
year = {2014},
volume = {388},
issue = {},
pages = {17--34},
doi = {10.3897/zookeys.388.6316},
url = {http://www.pensoft.net/journals/zookeys/article/6316/abstract},
note = {Versioned wiki page: 2014-03-12, version 42638, https://species-id.net/w/index.php?title=Rheocricotopus_serratus&oldid=42638 , contributors (alphabetical order): Pensoft Publishers.}

}

RIS/ Endnote:

TY - JOUR
T1 - A review of Rheocricotopus (Psilocricotopus) chalybeatus species group from China, with the description of three new species (Diptera, Chironomidae)
A1 - Liu W, Lin X
A1 - Wang X
Y1 - 2014
JF - ZooKeys
JA -
VL - 388
IS -
UR - http://dx.doi.org/10.3897/zookeys.388.6316
SP - 17
EP - 34
PB - Pensoft Publishers
M1 - Versioned wiki page: 2014-03-12, version 42638, https://species-id.net/w/index.php?title=Rheocricotopus_serratus&oldid=42638 , contributors (alphabetical order): Pensoft Publishers.

M3 - doi:10.3897/zookeys.388.6316

Wikipedia/ Citizendium:

<ref name="Liu2014ZooKeys388">{{Citation
| author = Liu W, Lin X, Wang X
| title = A review of Rheocricotopus (Psilocricotopus) chalybeatus species group from China, with the description of three new species (Diptera, Chironomidae)
| journal = ZooKeys
| year = 2014
| volume = 388
| issue =
| pages = 17--34
| pmid =
| publisher = Pensoft Publishers
| doi = 10.3897/zookeys.388.6316
| url = http://www.pensoft.net/journals/zookeys/article/6316/abstract
| pmc =
| accessdate = 2019-06-06

}} Versioned wiki page: 2014-03-12, version 42638, https://species-id.net/w/index.php?title=Rheocricotopus_serratus&oldid=42638 , contributors (alphabetical order): Pensoft Publishers.</ref>

See also the citation download page at the journal.


Taxonavigation

Ordo: Diptera
Familia: Chironomidae
Genus: Rheocricotopus

Name

Rheocricotopus serratus Liu, Lin & Wang, 2014 sp. n.Wikispecies linkZooBank linkPensoft Profile

Diagnosis

The adult male of the new species can be distinguished from known species of the species group and the genus by the following combination of characters: crista dorsalis sawtooth-shaped, hyaline, high as megaseta; high HR (2.61–3.42) and HV (3.40–5.00).

Description

Male imago (n = 4)
Total length 2.55–3.00, 2.73 mm. Wing length 1.33–1.95, 1.69 mm. Total length/wing length 1.44–1.94, 1.64. Wing length/length of profemur 2.21–2.35, 2.27.
Coloration. Head and abdomen yellow, thorax dark brown.
Head. AR 0.71–0.78, 0.74. Ultimate flagellomere 285–355, 323 μm long. Temporal setae 0–3, 1, including 0–1, 1 inner vertical; 0–2, 1 outer vertical and 0–1, 1 postorbital. Clypeus with 9–12, 10 setae. Tentorium 140–153, 148 μm long, 33–40, 38 μm wide. Stipes 65–75, 68 μm long, 3–7, 4 μm wide. Palpomere lengths (in μm): 35–70, 47; 48–58, 53; 103–123, 114; 118–155, 141; 205–238, 219. L: 5th/3rd 1.67–2.02, 1.92.
Wing (Fig. 12). Anal lobe slightly developed. VR 1.13–1.20, 1.17. Costal extension 50–88, 71 μm long. Brachiolum with 1 seta. R with 4–11, 7 setae. Remaining veins bare. Squama with 6–13, 9 setae. Thorax (Fig. 13). Antepronotum with 1–7, 4 lateral setae. Dorsocentrals 6–9, 7; acrostichals 9–15, 12; prealars 3. Scutellum with 4–6, 5 setae. Humeral pit moderately large, egg-shaped.
Legs. Spur of fore tibia 40–48, 44 μm long; spurs of mid tibia 15–25, 19 μm and 15–20, 17 μm long; spurs of hind tibia 43–55, 48 μm and 18–23, 19 μm long. Hind tibial comb with 11–13, 12 spines, 30–50, 40 μm long. Width at apex of fore tibia 35–45, 41 mm, of mid tibia 36–45, 41 mm, of hind tibia 38–45, 43 mm. Lengths (in μm) and proportions of legs as in Table 4.

Table 4. Lengths (in μm) and proportions of legs of Rheocricotopus (Psilocricotopus) serratus sp. n.
P1 P2 P3
fe 600–830, 743 570–800, 700 600–780, 715
ti 650–810, 760 660–720, 698 660–850, 783
ta1 520–780, 640 310–410, 380 380–530, 475
ta2 290–390, 350 150–200, 183 200–270, 253
ta3 205–270, 250 100–140, 125 160–220, 198
ta4 155–200, 181 55–80, 71 90–120, 105
ta5 90–100, 95 60–80, 73 70–90, 83
LR 0.78–0.96, 0.84 0.47–0.58, 0.54 0.58–0.63, 0.61
BV 2.39–2.55, 2.44 3.71–4.22, 3.96 2.17–3.04, 2.81
SV 1.95–2.61, 2.37 3.56–3.97, 3.69 2.92–3.32, 3.17
BR 1.75–2.11, 1.91 2.10–2.22, 2.19 2.40–3.55, 2.99
Hypopygium (Figs 14–15). Anal point triangular, pointed distally, 33–50, 41 μm long, 20–30, 24 μm wide, with 4–5, 5 lateral setae each side. Laterosernite IX with 2–3, 3 setae. Phallapodeme 23–28, 25 μm long. Transverse sternapodeme 18–33, 26 μm long. Gonocoxite 180–205, 195 μm long. Superior volsella triangular, 35–43, 40 μm long, with 7–8, 8 setae. Gonostylus 60–75, 67 μm long. Megaseta 13–15, 14 μm long. Crista dorsalis sawtooth-shaped, hyaline, high as megaseta. HR 2.61–3.42, 2.91. HV 3.40–5.00, 4.09.

Type material

Holotype: ♂ (BDN. 10058), China, Yunnan Province, Dali Bai Autonomous Prefecture, Eryuan County, Niujie Town, 26°25'55"N, 99°98'90"E, light trap, Zhou CF. Paratypes (3): 1♂, Zhejiang Province, Qingyuan County, Baishanzu National Nature Reserve, 27°73'23"N, 119°19'06"E, 15.vii.1994, Ji BC; 1♂, Tibet, Xigaze, Nielamu County, 27°98'73"N, 85°98'32"E, 21.9.1987, light trap, Deng CY; 1♂, Sichuan Province, Xiangcheng County, 28°93'44"N, 99°79'72"E, 12.vi.1996, light trap, Wang XH.

Etymology

The specific name is an adjective, from Latin serratus, meaning sawtooth, referring to the sawtooth-shaped crista dorsalis.

Remarks

The new species resembles Rheocricotopus (Psilocricotopus) himalayensis Chaudhuri & Sinharay, 1983 in the triangular anal point, but it can be separated from the latter species on the basis of following characters: (1) costal extension of the new species much longer (50–88 μm), than Rheocricotopus (Psilocricotopus) himalayensis Chaudhuri & Sinharay (25 μm); (2) humeral pit in the new species medium, ovoid, which rounded in the latter species; (3) crista dorsalis sawtooth-shaped, hyaline in the new species, which moderately pronounced in the latter species.
Female and immature stages unknown.

Original Description

  • 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

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