Orbamia abiyi 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 abiyi Hausmann & Tujuba sp. nov. Figures 10 , 28 , 46 , 64 , 78

Examined material.

Holotype: ♂, North Zambia, Mutinondo, 1390 m, wet Miombo, 29.XII. 2010, 12°23'30"S, 31°19'23"E, light trap, J. Lenz legit (ZSM G 20912).

Paratypes: 1♂1♀, North Zambia, Mutinondo, 1390 m, wet Miombo, 29.XII.2010, 12°23'30"S, 31°19'23"E, light trap, J. Lenz legit (ZSM G 20913/♀); 1♂, S. Ethiopia SN, Arba Minch, below Hotel Bekele Molla, thornbush, 1310 m, 10°26'N, 39°53'E, 29.IV.2008, leg. Hacker & Schreier (ZSM G 20556); 1♂, Tanzania, Morogoro region, Mikesse Hills, 420 m, 06°40.15'S, 037°57.57'E, 21.XII.2005, Ph. Darge; 1♀, Tanzania, Rukwa prov., Mbizi mts, entre Kisungu et Muze, 1415 m, 07°43.82'S, 031°32.48'E, 14.v.2004, leg. Ph. Darge; 1♂, Namibia, Kavango distr., 17°52'N, 19°39'E, 16 km W Rundu, (Okavango) Kavango river area, 28.II.2006, leg. H. Hacker & H.P. Schreier (ZSM G 20932); 2♂, Rwanda, S.E. Rusumo, 1300 m, 29.XII.1975, leg. B. Turlin (ZSM G 13625; BC ZSM Lep); 1♂, id., 25.3.1975 (ZSM).

Etymology.

The name honours his Excellency Dr Abiy Ahmed Ethiopia’s Prime Minister, the 2019 Nobel Peace Prize Laureate, for his tremendous contributions to Ethiopia and the Horn of African geopolitics.

Differential features

(COI sequences, photographs of adults and their genitalia see https://dx.doi.org/10.5883/DS-ORBAMIA): Adult: Forewing length: 10-12 mm. Upperside of wings: Ground colour pale grey with slight brown suffusion, pattern brown with very slight orange tinge. Underside: Ground colour whitish, orange between veins, apical spots on forewing conspicuous, sharply bordered, on hindwing terminal fascia usually diffuse, in Tanzania hindwing terminal fascia uninterrupted. Male genitalia: Uncus narrow, digitiform, valva straight, broad, dorsal process with conspicuous, stout hook at tip, cornutus narrow and long (2.2-2.3 mm). Female genitalia: Lamella ante- and post-vaginalis fused, oval (length 0.75-0.85 mm), signum weakly sclerotised, small, transverse ridge straight (0.17-0.2 mm).

Remarks.

Populations from western Ethiopia with darker upperside of wings, on hindwing underside dark pattern reduced to apex. See also remarks to the following species.

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.