Orbamia Herbulot, 1966

Herbulot (1966): 221. Type species: Orbamia octomaculata Wallengren, 1872

Differential features

(COI sequences, photographs of adults and their genitalia see https://dx.doi.org/10.5883/DS-ORBAMIA). Adult: Male antennae bipectinate. Upperside of wings with conspicuous, contrasting discal spots on all wings. Underside with yellowish scales, with darker pattern towards termen. Male genitalia: Differing from those of the other two genera by longer uncus, naked dorsal process of valva, long and narrow cornutus. Female genitalia: Apophyses anteriores usually half-length of apophyses posteriores, lamellae ante- and post-vaginalis sclerotised (often oval), ductus bursae membranous, signum a small sclerite with transverse ridge.

Genetic data and phylogeny.

Multigene analyses of Geometridae revealed evidence for assignation of the genus Orbamia to Cassymini and for sister group relationship with the African genus Pycnostega (Murillo-Ramos et al. 2019; Brehm et al. 2019). The maximum likelihood analysis of COI barcode data underpins the monophyly of the genus Orbamia as conceived and circumscribed here (cf. Table 1, Fig. 85).