Orbamia emanai 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

Orbamia emanai Hausmann & Tujuba sp. nov. Figures 11 , 29 , 47 , 65 , 79

Examined material.

Holotype: ♂, NW Ethiopia, 30 km SE Bahir Dar, Tis Isat, Blue Nile falls, 1640 m, 11°29'08"N, 37°35'28"E, 25.VI.2008, leg. Hacker & Schreier (ZSM G 20917).

Paratypes: 30♂8♀, NW Ethiopia, 30 km SE Bahir Dar, Tis Isat, Blue Nile falls, 1640 m, 11°29'08"N, 37°35'28"E, 25.VI.2008, leg. Hacker & Schreier; 1♂, S. Ethiopia S.N., 12 km W Jinka, border of Mago N.P., 930 M (lux), 05°18'47"N, 36°44'07"E, 6.V.2008, leg. Hacker & Schreier (ZSM G 20910/♀; ZSM G 20916/♀).

Additional material

(exactly barcode-sharing): 8♂2♀, Botswana, Central distr. 15 km NW Francistown, river Tati, 1030 m, 21°02'S, 27°32'E, 19.II.2006, Hacker & Schreier (ZSM G 20919/♀; ZSM G 20920/♂); 1♀, Botswana, Kgatleng distr., 30 km NNE Gaborone, 980 m (lux), 19.II.2006, leg Hacker & Schreier; 2♂, Botswana, Central district 10 km SSE Nata, Sua pan, 930 m (lux) 20°09'S, 26°26'E, 20.II.2006, leg Hacker & Schreier.

Etymology.

Named after Emana Getu, a senior professor of Entomology, at Addis Ababa University for his immense contributions to the field of entomology.

Differential features

(COI sequences, photographs of adults and their genitalia see https://dx.doi.org/10.5883/DS-ORBAMIA): Adult: Forewing length: 9-12 mm. Upperside of wings: Ground colour comparatively dark. Underside: Ground colour pale grey, on hindwing with slight orange tinge, on forewing orange between veins, apical spots on forewing conspicuous, sharply bordered, on hindwing slightly darker at apex only. Male genitalia: Uncus narrow, digitiform, valva straight, broad, dorsal process with conspicuous, stout hook at tip, cornutus narrow and very long (2.5-3.0 mm). Female genitalia: Lamella ante- and post-vaginalis fused, oval (length 0.8-0.85 mm), signum weakly sclerotised, small, transverse ridge straight (0.17-0.2 mm).

Remarks.

Morphological differences to the previous species small, but the genetic divergence correlates with darker wing colour, and a few characters in male genitalia (longer cornutus). Distribution areas of both species overlapping.

Figures

Figures 1 - 18. Specimens of the genera Orbamia, Rabomia, and Morabia, dorsal view. 1 Orbamia octomaculata 2 O. marginata (paratype) 3 O. becki (holotype) 4 O. renimacula 5 O. clarissima (holotype) 6 O. clarior (holotype) 7 O. obliqua (holotype) 8 O. obliqua parva (holotype) 9 O. ocellata 10 O. abiyi (holotype) 11 O. emanai (holotype) 12 O. emanai lenzi (holotype) 13 O. pauperata (holotype) 14 O. balensis (holotype) 15 Rabomia subaurata 16 R. obscurior (holotype) 17 Morabia politzari (holotype) 18 M. brunnea (holotype). Scale bars: 1 cm.

Figures 28 - 36. Specimens of the genera Orbamia, Rabomia, and Morabia, ventral view. 28 Orbamia abiyi 29 O. emanai 30 O. emanai lenzi 31 O. pauperata 32 O. balensis 33 Rabomia subaurata 34 R. obscurior 35 Morabia politzari 36 M. brunnea. Scale bars: 1 cm.

Figures 46 - 54. Male genitalia of the genera Orbamia, Rabomia, and Morabia. 46 Orbamia abiyi 47 O. emanai 48 O. emanai lenzi 49 O. pauperata 50 O. balensis 51 Rabomia subaurata 52 R. obscurior 53 Morabia politzari 54 M. brunnea. Scale bar: 1 mm.

Figures 64 - 72. Aedeagus of male genitalia of the genera Orbamia, Rabomia, and Morabia. 64 Orbamia abiyi 65 O. emanai 66 O. emanai lenzi 67 O. pauperata 68 O. balensis 69 Rabomia subaurata 70 R. obscurior 71 Morabia politzari 72 M. brunnea. Scale bar: 1 mm.

Figures 73 - 84. Female genitalia of the genera Orbamia, Rabomia, and Morabia. 73 Orbamia octomaculata 74 O. becki 75 O. renimacula 76 O. clarissima 77 O. ocellata 78 O. abiyi 79 O. emanai 80 O. emanai lenzi 81 O. pauperata 82 Rabomia subaurata 83 R. obscurior 84 Morabia politzari. Scale bar: 1 mm.