Systematic revision of the North American velvet ant genus Invreiella Suárez (Hymenoptera: Mutillidae) with description of eleven new species.

The velvet ant genus Invreiella Suárez, 1966 is redescribed and revised. Females are grouped into five species-groups, with eleven new species described based on females: I. acuminata Waldren, sp. nov., I. australis Waldren, sp. nov., I. bimaculata Waldren, sp. nov., I. breviclypeata Waldren, sp. nov., I. chihuahuensis Waldren, sp. nov., I. cuernavaca Waldren, sp. nov., I. erythrocephala Waldren, sp. nov., I. manleyi Waldren, sp. nov., I. mesomexicana Waldren, sp. nov., I. suarezi Waldren, sp. nov., and I. tequila Waldren, sp. nov. One new combination is included, I. cephalargia (Mickel, 1924), comb. nov., formerly placed in Pseudomethoca Ashmead, 1896. Additionally, I. curoei Quintero Cambra, 2011 is synonymized with I. cardinalis (Gerstaecker, 1874), syn. nov., and I. megacantha (Cockerell Casad, 1894), stat. resurr., is treated as a nomen dubium. The lectotype of Mutilla satrapa Gerstaecker, 1874 originally designated by C. Mickel is here validated. An illustrated key to species is included.

Observation of a mixed-sex, mixed-species aggregation of velvet ants, genus Timulla Ashmead, 1899 (Hymenoptera: Mutillidae) in the Brazilian Amazon, Roraima, with a new synonymy.

An aggregation of two males of Timulla bitaeniata (Spinola, 1841), three single males T. rufogastra (Lepeletier, 1845) and another two males T. rufogastra (Lepeletier, 1845) in copula with two females of T. eriphyla Mickel, 1938 is documented, described and discussed. A new synonymy is proposed for Mutilla rufogastra Lepeletier de Saint-Fargeau, 1845 [=Timulla (Timulla) eriphyla Mickel, 1938, syn. nov.] based on the mating pairs.

Bees as hosts of mutillid wasps in the Neotropical region (Hymenoptera, Apidae, Mutillidae)

ABSTRACT A review of bee species used as hosts of mutillid wasps in the Neotropical region is presented. Three new confirmed host records are provided for the mutillid species Hoplomutilla biplagiata Mickel, 1939, Pappognatha limes Mickel, 1939, and Tallium aracati Casal, 1962. Two potential host records are provided for Euspinolia rufula Mickel, 1938 and Lophomutilla inca Fritz and Pagliano, 1993. Additionally, Mutilla hoplitiformis Strand, 1909, is transferred to the genus Darditilla. Correlations between host nesting habits and female mutillid morphology are discussed. Lastly, all known confirmed and potential host records in the Neotropical region are compiled.