Abstract
A new material on the genera Gymnogryllus Sauss. and Macrogryllus Sauss. is considered. Three new taxa from the Indo-Malayan and Papuan Regions are described: G. egorovi sp. nov. (Indonesia: Maluku Utara Province); G. vietnamensis mada subsp. nov. (Vietnam: Dong Nai Province); M. canorus sp. nov. (Malaysia: Pahang State). The first species is distinguished from all the other congeners by a few distinct features of the male tegminal venation and some important characters of the male genitalia; the second new taxon differs from the nominotypical subspecies of the same species almost only in small details of the male genitalia; and M. canorus sp. nov. is different from the only other species of Macrogryllus mainly in the male genitalia with a very characteristic shape of the ectoparameres. The male genitalia of M. ephippium ephippium (Saussure, 1877) are firstly examined, and previously unknown male of M. bicolor Chopard, 1930 is also described; for the both latter taxa, some new localities are recorded; and for M. bicolor, its calling burrow is firstly found (this burrow is very characteristic, in the shape of a ground cone with an almost vertical tunnel leading to the underground cavity, where the male is hiding during its calling song).
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