Chasmogenus abnormalis

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Jia F, Tang Y (2018) A faunistic study of genus Chasmogenus Sharp, 1882 of China (Coleoptera, Hydrophilidae). ZooKeys (738) : 59–66, doi. Versioned wiki page: 2018-02-19, version 166205, https://species-id.net/w/index.php?title=Chasmogenus_abnormalis&oldid=166205 , contributors (alphabetical order): Pensoft Publishers.

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BibTeX:

@article{Jia2018ZooKeys,
author = {Jia, Fenglong AND Tang, Yu-dan},
journal = {ZooKeys},
publisher = {Pensoft Publishers},
title = {A faunistic study of genus Chasmogenus Sharp, 1882 of China (Coleoptera, Hydrophilidae)},
year = {2018},
volume = {},
issue = {738},
pages = {59--66},
doi = {10.3897/zookeys.738.21711},
url = {https://zookeys.pensoft.net/articles.php?id=21711},
note = {Versioned wiki page: 2018-02-19, version 166205, https://species-id.net/w/index.php?title=Chasmogenus_abnormalis&oldid=166205 , contributors (alphabetical order): Pensoft Publishers.}

}

RIS/ Endnote:

TY - JOUR
T1 - A faunistic study of genus Chasmogenus Sharp, 1882 of China (Coleoptera, Hydrophilidae)
A1 - Jia F
A1 - Tang Y
Y1 - 2018
JF - ZooKeys
JA -
VL -
IS - 738
UR - http://dx.doi.org/10.3897/zookeys.738.21711
SP - 59
EP - 66
PB - Pensoft Publishers
M1 - Versioned wiki page: 2018-02-19, version 166205, https://species-id.net/w/index.php?title=Chasmogenus_abnormalis&oldid=166205 , contributors (alphabetical order): Pensoft Publishers.

M3 - doi:10.3897/zookeys.738.21711

Wikipedia/ Citizendium:

<ref name="Jia2018ZooKeys">{{Citation
| author = Jia F, Tang Y
| title = A faunistic study of genus Chasmogenus Sharp, 1882 of China (Coleoptera, Hydrophilidae)
| journal = ZooKeys
| year = 2018
| volume =
| issue = 738
| pages = 59--66
| pmid =
| publisher = Pensoft Publishers
| doi = 10.3897/zookeys.738.21711
| url = https://zookeys.pensoft.net/articles.php?id=21711
| pmc =
| accessdate = 2024-12-13

}} Versioned wiki page: 2018-02-19, version 166205, https://species-id.net/w/index.php?title=Chasmogenus_abnormalis&oldid=166205 , contributors (alphabetical order): Pensoft Publishers.</ref>

See also the citation download page at the journal.


Taxonavigation

Ordo: Coleoptera
Familia: Hydrophilidae
Genus: Chasmogenus

Name

Chasmogenus abnormalis (Sharp, 1890) – Wikispecies link – Pensoft Profile

Material examined

CHINA: Guangdong: 4 males, 6 females (SYSU), Guangdong, Zhuhai, Hengqing island, 10.VII.2006, Fenglong Jia leg. [transcribed from Chinese]. Macau: 2 females (SYSU), Cotai Ecosystematic Reserve, part 1, 8.iv.2014, Weicai Xie et Jinwei Li leg. [transcribed from Chinese].

Remarks

This species is close to C. orbus from which it can only be distinguished by the aedeagus. Parameres without or with small subapical tooth (Devi et al. 2016[2]: figs 10–13), apex broadened inwards (Fig. 10). Median lobe gradually narrowing from apical quarter to apex, moderately constricted in apical fifth and strongly curved subapically, apex truncate (Fig. 10).

Distribution

China (Guangdong, Macau); Cambodia, India, Indonesia, Japan, Sri Lanka, Thailand, Vietnam.

Key to the species of the Chasmogenus of China
Key to the species of the Chasmogenus of China — F. Jia , Y. Tang
1
Parameres with a distinct sharp subapical tooth on inner margin (Figs 8–9), not broadened inwards apically, median lobe narrowly truncate apically 
  2
–
Parameres with a small subapical tooth on inner margin (Fig. 10), broadened inwards apically, median lobe widely truncate apically 
   C. abnormalis (Sharp)
2
Parameres with apex sharp and subapical tooth less sharp. Median lobe broader, not constricted in apical quarter (Fig. 9) 
   C. orbus Watanabe
–
Parameres with apex obtuse and subapical tooth sharper. Median lobe relatively slender, distinctly constricted in apical quarter (Fig. 8) 
   C. parorbus sp. n.

Taxon Treatment

  • Jia, F; Tang, Y; 2018: A faunistic study of genus Chasmogenus Sharp, 1882 of China (Coleoptera, Hydrophilidae) ZooKeys, (738): 59-66. doi

Images

Figures 8–10. Aedeagi (dorsal view): 8 Chasmogenus parorbus sp. n. 9 C. orbus Wlatanabe 10 C. abnormalis Sharp.
Figures 8–10. Aedeagi (dorsal view): 8 Chasmogenus parorbus sp. n. 9 C. orbus Wlatanabe 10 C. abnormalis Sharp. 

Other References

  1. ↑ Hansen M (1999) Hydrophiloidea (s. str.) (Coleoptera). World Catalogue of Insects 2. Apollo Books, Amsterdam, 416 pp.
  2. ↑ 2.0 2.1 Devi M, Devi O, Fikáček M, Minoshima Y, Wanghengbam L (2016) Redescription and lectotype designation of Chasmogenus abnormalis (Sharp), with notes on its distribution. Zootaxa 4144(2): 296–300. https://doi.org/10.11646/zootaxa.4144.2.12
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