Subgenus Xenomorellia Malloch, 1923

Xenomorellia Malloch, 1923: 524 (as genus). Type species: Xenomorellia holti Malloch, 1923 .

Diagnosis. Colouration metallic blackish-blue with silver pruinosity; wing without maculae, but some infuscation on humeral vein and on apex of Sc and R1. Female with proclinate fronto-orbital seta (Fig. 4); parafrons setulose (Fig. 4); interfrontal seta absent. Dorsocentrals 2+4. Posthumeral present; postsutural intra-alars 2; intrapostalar absent or present. Prosternum bare. Katepisternals 1+2. Meron bare. Anterior suprasquamal ridge setulose. Wing with the basal portion of stem-vein setulose ventrally; apical portion of stem-vein dorsally with a strong reclinate setula; R4+5 bare dorsally and ventrally; M bent forward towards R4+5. Lower calypter glossiform. Subcostal sclerite setulose ventrally. Male mid femur with a dorsal preapical protuberance bearing a set of modified (hook-like) setulae. Calcar strong.

Comments. This subgenus includes two species, X. holti Malloch (from Peru and SE Brazil) and X. montanhesa Albuquerque (SE Brazil).

Distribution (2 species). Neotropical.

References. Albuquerque (1952), de Carvalho and Couri (2002).