Rabomia Hausmann & Tujuba, 2020

Tujuba, Tesfu Fekensa, Hausmann, Axel & Sciarretta, Andrea, 2020, Revision of the Orbamia Herbulot, 1966 group of genera with description of two new genera, ten new species, and two new subspecies (Lepidoptera, Geometridae, Ennominae, Cassymini), ZooKeys 929, pp. 53-77 : 53

Rabomia Hausmann & Tujuba gen. nov.

Type species.

Ectropis? subaurata Warren, 1899.

Etymology.

The name is an anagram of the sister genus Orbamia , similarly to the anagram used by Herbulot (1966) when transforming the name Boarmia to Orbamia .

Differential features

(COI sequences, photographs of adults and their genitalia see https://dx.doi.org/10.5883/DS-ORBAMIA). Adult: Male antennae ciliate-fasciculate, female antennae filiform. Palpi of both sexes broad, bushy scaled, length in male 1.0, in female 1.5 times diameter of eye. Hind tibia of both sexes with two pairs of unequal spurs. Upperside of wings with inconspicuous, elongate discal spots, postmedial line of forewings sharp, strongly curved. Underside yellow, black terminal fascia conspicuous. Male genitalia: Uncus with three short sclerotised spines, lateral lobes below uncus swollen, saccus triangular, dorsal process of valva naked, with curved spinule at tip, aedeagus comparatively broad, with bundle of small cornuti at base, vesica condensed to a broad cornutus-like sclerite at tip. Female genitalia: Lamellae ante- and post-vaginalis sclerotised (elongate rhomboid), posteriorly rounded, ductus bursae sclerotised, long, helicoid, longitudinally furrowed, corpus bursae membranous, signum large, star-shaped.

Genetic data and phylogeny.

The maximum likelihood analysis of COI barcode data supports the monophyly of the genus Rabomia gen. nov. and sister group relationship with ( Pycnostega + Dorsifulcrum ) (cf. Table 1 , Fig. 85 ). However, phylogenies at genus level need to be considered with caution, when they are inferred from COI data. More research is needed to investigate the potential (re-) assignment of Dorsifulcrum to the Cassymini after having been excluded from that tribe in Brehm et al. (2019).

Remarks.

In some morphological features (e.g., female signum and ductus bursae) the genus Rabomia gen. nov. is transitional to the genus Dorsifulcrum Herbulot, 1979, but is genetically clustering separately, underside of wings with black fascia only in the terminal area.

Figures

Figure 85. Maximum Likelihood Tree of COI data of the genera Orbamia, Rabomia, and Morabia, 50 Bootstrap Replications, Tamura-Nei model, uniform rates, built with Mega 6 software (Tamura et al. 2013; scale bar = 2 %), for original data see https: // dx. doi. org / 10.5883 / DS-ORBAMIA.