La diversidad genérica de los coleópteros Melonlonthidadae en México

Abstract

A conmparative study between Melolonthinae, Dynastae, Rutelinae,Cetoninae Valginae y Trichinae distributed along 3 large physiograpfic-ecological rogions of México is presented. From 111 generated from México, 17 are endemic to thie country, 26 are found m the Pacific slopes, mainly associatnd wiih tropical deciduous forests, cloud montane forest and pine-oak forest, and 20 genera are found in the Golf slopes, related with tropical rain forest, cloud montane forest and oak humid forests Only 6 genera are restricted to busliy and grassy lands of tfie Central Plateau. Pacific and Gulf armas shared 54 genera, usually represented bydifferent species, and in small proportion by widespread species A large number of genera (15%) from the Pacific slopes are endemic and the most part of remainder show some kind of restricted distnbution. In contrast, only 2.7% of the Gulf of Mexico's genera are endemic wliereas the other have a wide distribution and diversily m Central and South America. Four endemic genera front Pacific localities are closely related witfi the Old World fauna, they are Rutelisca, Callirhinus (Rutelinae), lschnoscelis and Neoscelis (Cetoninae).