Revision of the subgenus Udamochiras of Melaloncha beekilling flies (Diptera: Phoridae: Metopininae) Author Brown, Brian V. text Zoological Journal of the Linnean Society 2004 2004-01-31 140 1 1 42 https://academic.oup.com/zoolinnean/article-lookup/doi/10.1111/j.1096-3642.2004.00086.x journal article 10.1111/j.1096-3642.2004.00086.x 0024-4082 5439603 MELALONCHA RUBRICORNIS BORGMEIER Melaloncha rubricornis Borgmeier, 1924: 17–18 . Holotype . ♂ , BRAZIL : Rio de Janeiro : Petrópolis , 22.i.1923 , Ronchi [ LACM ENT 122521 ] ( MZSP ). Species recognition . This species is known only from the male sex, differentiated by Borgmeier from other species by the wing venation (e.g. Borgmeier, 1971: 130 ). He stated that the venation of this species was identical with that of M. piliapex , a taxon that, at the time, was a mixture of two species. As Borgmeier (1971) stated: ‘The segregation of species is not easy. Owing to sexual dimorphism, it is especially difficult to associate the males with respective females. it is therefore highly inconvenient to base new species on males alone, as I unfortunately did several times in the past.’