Leiodytes nicobaricus (Redtenbacher, 1868)

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Leiodytes nicobaricus, from Thailand, Phetchabun. (Photo: František Slamka)


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Ordo: Coleoptera
Familia: Dytiscidae
Subfamilia: Hydroporinae
Tribus: Bidessini
Genus: Copelatus


Leiodytes nicobaricus (Redtenbacher, 1868)

  • original combination: “Hydroporus nicobaricus” Redtenbacher, 1868

Type locality

“India, Nicobar Islands, Faúi” Redtenbacher (1868)

Type material

Holotype in Naturhistorisches Museum Wien, Vienna, Austria (Wewalka 1982).


India: Nicobar Islands (Vazirani, 1977), Thailand, Malaysian Peninsula and Singapore (Hendrich ez al. 2004).

Records from Thailand

2 exs., “THAILAND: Prachin Buri, Khao Yai NP, Than Rattana WF, 209 m, 14.251278° 101.381694° 9.8.2017, Atthakor & Hendrich leg.” [THAI_LHWA_2017] (ZSM); 1 ex., “Thailand, Phetchabun Province , near (just outside) Nam Nao National Park, Route 2216 then small road off, in village Khlong Choen, 16°40’29“N, 101°44’01“E, 21.03.2017, leg. H. Shaverdo “ (NMW) [2017-Th-05A].


Leiodytes nicobaricus is one the most widespread species of Bidessini in Thailand and Malaysia. The species inhabits exposed or semi-shaded, temporary and permanent water bodies rich in vegetation and plant debris, such as ponds, pools and drainage ditches in primary and cultivated areas. The beetle occupies the very shallow zone just at the edge of the water bodies.



Original description

  • Redtenbacher L. 1868: Reise der österreichischen Fregatte Novara um die Erde in den Jahren 1857, 1858, 1859 unter den Befehlen des Commodore B. von Wüllerstorf-Urbair. Zoologischer Theil. Zweiter Band (1): Coleopteren. Wien: Carl Gerold's Sohn (1867), iv + 249 pp. + 5 pls.

Other references

Hendrich L., Balke M. & Yang C.M. 2004: Aquatic Coleoptera of Singapore: Species richness, ecology and conservation. The Raffles Bulletin of Zoology 52(1): 97-145. Wewalka G. 1982b: Results of the Austrian-Indian Hydrobiological Mission 1976, to the Andaman Islands. Part IX, Dytiscidae (Col.). Koleopterologische Rundschau 56: 115-125.

Online resources