Hydrovatus crassicornis (H. J. Kolbe, 1883)

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

Hydrovatus crassicornis (H. J. Kolbe, 1883)

Type locality.

Eastern part of Madagascar

Material examined.

1 ♂, 1 ♀: MAK-42; 1 ♂: MAK-60; 1 ♂, 1 ♀: MAK-61.

Distribution.

Madagascar, widespread ( Guignot 1959-1961; Bertrand and Legros 1971; Biström 1996).

Habitat in study area.

This species was collected at two peripheral and one inner massif sites. The habitats were located in open areas and were lentic water bodies (with or without slow water circulation) with sand-clay bottom and with plant debris, with water clear to moderately turbid, with discontinuous marginal belts of helophytes and at one site with filamentous green algae.