Cybister sugillatus Erichson, 1834

Hendrich, Lars & Balke, Michael, 2004, Aquatic Coleoptera Of Singapore: Species Richness, Ecology And Conservation #, Raffles Bulletin of Zoology 52 (1), pp. 97-145 : 121

Cybister sugillatus Erichson, 1834

( Fig. 24 )

Cybister sugillatus Erichson, 1834: 227 . Cybister bisignatus Aubé, 1838: 88 . Cybister notasicus Aubé, 1838: 90 . Cybister olivaceus Boheman, 1858: 21 . Cybister sugillatus Erichson - Régimbart, 1899: 355; Fernando,

1964: 82, 86, 88; Vazirani, 1977: 89; Nilsson, 1995: 78, and references therein; 2001: 93.

Material known. – Number? - One old record: “ Singapour ” cited in Régimbart (1899). Specimens not seen. Possibly deposited in MNHN.

Distribution. – This species is widespread in the Oriental Region, where it is known from Sri Lanka, India, Malaysia, Singapore, Indonesia and North to the Ryukyu Islands and China ( Régimbart, 1899; Nilsson, 1995).

Ecology. – Cybister sugillatus has been collected in various types of mostly shaded, perennial standing waters, such as forest pools, ponds, shallow lakes, ditches and slow flowing streams. Also in blackwater habitats in freshwater swamp forests (Selangor, West Malaysia, specimens deposited in ZRC) .

Figures

Figs. 24-30. 24. Cybister sugillatus Erichsin, 1834 (Fam. Dytiscidae, 22.0 mm); 25 Hydrocanthus indicus Wehncke, 1876 (Fam. Noteridae, 4.5 mm); 26. Spercheus stangli Schwarz & Barber, 1917 (Fam. Spercheidae, 4.2 mm); 27. Berosus fairmairei Zaitzev, 1908 (Fam. Hydrophilidae, 4.5 mm); 28. Amphiops mater sumatrensis (Sharp, 1873) (Fam. Hydrophilidae, 3.5 mm); 29. Helochares pallens (MacLeay, 1825) (Fam. Hydrophilidae, 3.1 mm);30. Hydrophilus cavisternum Bedel, 1891 (Fam. Hydrophilidae, 32.0 mm).