Cybister operosus Sharp, 1882

Ramahandrison, Andriamirado Tahina, Rakouth, Bakolimalala & Manuel, Michael, 2022, The aquatic Adephaga of the Makay, central-western Madagascar, with description of two new diving beetle species (Coleoptera, Gyrinidae, Haliplidae, Noteridae, Dytiscidae), ZooKeys 1127, pp. 1-60 : 1

Cybister operosus Sharp, 1882

Type locality.

Madagascar.

Material examined.

1 ♀: MAK-50.

Distribution.

Madagascar (widespread but localised) ( Guignot 1959-1961; Bukontaite et al. 2015).

Habitat in study area.

This species was captured only once, in northern inner Makay, in a large temporary pond located in a shallow open area on sand. This single capture does not reflect the usual habitat preferences of this species. According to our observations in Isalo and Ankarafantsika, this is a lotic species (an exceptional ecology for the genus) inhabiting the margins of streams and rivers with some vegetation and / or tree roots and / or plant debris, in well-preserved forested or semi-forested environments.

Subfamily Dytiscinae , tribe Aciliini