Hydaticus petitii Aube , 1838

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

Hydaticus petitii Aube, 1838

Type locality.

Madagascar.

Material examined.

1 ♂: MAK-52.

Distribution.

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

Habitat in study area.

This species was collected once, in northern inner Makay, in a calm pool (~ 3 m × 7 m) on the bottom of a canyon, with inflow and outflow from the nearby Ampasimaiky River. This pool was rather deep (> 1 m), with bottom of sand covered with a thin layer of clay, almost without vegetal detritus, with moderately turbid water and no vegetation. The environment was semi-forested and the pond was surrounded by Ravenea palm trees. As a rule this Malagasy endemic species is encountered in forest massifs in more or less undisturbed habitats.