Anommatium Förster, 1856

Genus Anommatium Förster, 1856

Anommatium Förster, 1856: 130 , 140. (Type species: Anommatium ashmeadi Mayr, 1904 ).

Somaroa Jansson, 1956: 77 , 85. (Type species: Somaroa myrmicaria Jansson, 1956 ). Synonymised by Macek (1989b).

Erasikea Szabó, 1961: 492 ; syn. nov. (Type species: Erasikea nutrix Szabó, 1961 ).

Remarks. The morphological characters of males indicate that Anommatium is closely related to Pantolyta . The aberrant appearance of Anommatium female is associated with geophilous life mode and has a distinct adaptive value ( Macek, 1989b). Most features of Anommatium female mentioned by Macek (1989b) are not unique and independently evolved in other lineages of diapriid wasps, except for two ones, a reduced number of antennal segments (13 or 14) and palpal formula (maxillary palpus one- segmented; labial palpus strongly reduced, represented by a small tubercle). The mentioned two differences are found to be distinctive, supporting a separate taxonomic status of the genera Anommatium and Pantolyta .

The monotypic genus Erasikea Szabó, 1961 was based on a single female specimen. In the generic diagnosis, Szabó (1961) mentioned that this genus shares some diagnostic characters (i.e. rounded head, missing ocelli, 14-segmented antennae, mesosoma narrower than head, absent wings and tegulae) with Anommatium ashmeadi . Other morphological characters of Erasikea list- ed in the original description are (1) the mesonotum with notauli, (2) posterior two-thirds of the propodeum crooked, hollowed out like a spoon, deeply cut out in the middle, with a small tooth on each side, and (3) the petiole flattened dorsoventrally. We have examined the holotype of Erasikea nutrix and found that actually the notauli on the mesonotum are missing, and the propodeum and petiole are malformed, causing the misinterpretation of characters 2 and 3. Thus, A. ashmeadi is found to be conspecific with E. nutrix , syn. nov., and the genus Erasikea , syn. nov., is a junior synonym of Anommatium .