The aquatic Adephaga of the Makay, central-western Madagascar, with description of two new diving beetle species (Coleoptera, Gyrinidae, Haliplidae, Noteridae, Dytiscidae) Author Ramahandrison, Andriamirado Tahina https://orcid.org/0000-0002-0833-8730 Departement de Biologie et Ecologie Vegetales, Faculte des Sciences, BP 906, Universite d'Antananarivo, Antananarivo, Madagascar & Sorbonne Universite, Institut de Systematique, Evolution, Biodiversite (UMR 7205), MNHN SU CNRS EPHE UA, Case 05, 7 quai St Bernard, Paris, France Author Rakouth, Bakolimalala https://orcid.org/0000-0001-5710-2006 Departement de Biologie et Ecologie Vegetales, Faculte des Sciences, BP 906, Universite d'Antananarivo, Antananarivo, Madagascar Author Manuel, Michael Sorbonne Universite, Institut de Systematique, Evolution, Biodiversite (UMR 7205), MNHN SU CNRS EPHE UA, Case 05, 7 quai St Bernard, Paris, France manuel1570@yahoo.fr text ZooKeys 2022 2022-11-02 1127 1 60 http://dx.doi.org/10.3897/zookeys.1127.85737 journal article http://dx.doi.org/10.3897/zookeys.1127.85737 1313-2970-1127-1 4759AFC32EFD47A7853F645FB32829BA D72971CE12A85992AFFD69F186474E85 Hydaticus servillianus Aube , 1838 Hydaticus discoidalis = H. discoidalis Hope, 1843; H. flavomarginatus Zimmermann, 1920). Type locality. South Africa, Western Cape, Cape of Good Hope. Material examined. 1 ♀ : MAK-1A; 1 ♂ : MAK-2; 13 ♂♂ , 7 ♀♀ : MAK-19; 1 ♂ , 3 ♀♀ : MAK-23; 2 ♂♂ : MAK-40A; 1 ♂ , 6 ♀♀ : MAK-61; 1 ♂ : MAK-62. Distribution. Sub-Saharan Africa, Madagascar ( Guignot 1959-1961 ; Bameul 1984 ; Hajek and Reiter 2014 ; Bukontaite et al. 2015 ). Habitat in study area (Fig. 2B, C ). This species has been found in peripheral sites and at one inner massif site, in lentic and slowly flowing lotic habitats, mainly in open areas. The bottom comprised various amounts of sand and clay/mud and moderate to abundant plant debris. The water was clear to moderately turbid. The vegetation was variously developed. This eurytopic species is tolerant to anthropogenic perturbation.