Orbamia clarissima 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 clarissima Hausmann & Tujuba sp. nov. Figures 5 , 23 , 41 , 59 , 76

Examined material.

Holotype: ♀, Kibwezi, B.E.A. [Kenya], 12 March 1917 (W. Feather), coll. ZSM (ZSM G 13618).

Paratypes: 1♂, Kibwezi, B.E.A. [Kenya], April 1922 (W. Feather); 1♂, Kenya, Mutha, 5.IV.69, Watulege; 1♀, Kenya, Musthomo, 13.III.69, Watulege (ZSM G 13617); 1♂, Somalia m., Caonole Fluß, 21.1.1988, leg. Dr. Politzar (all ZSM). ZSM G 13647/♂.

Etymology.

The name refers to the very pale ground colour (Lat. clarissimus, -a, -um = palest, clearest).

Differential features

(COI sequences, photographs of adults and their genitalia see https://dx.doi.org/10.5883/DS-ORBAMIA): Adult: Forewing length: 7.5-11 mm, one of the smallest Orbamia species. Upperside of wings: Ground colour whitish with slight grey brown suffusion. Underside: Ground colour white with slight orange tinge, mainly towards termen between veins, apical spots on all wings conspicuous, sharp. Male genitalia: Uncus long, digitiform, stout, valva straight, dorsal process with small spinule at tip, cornutus very short (1.0 mm) and tiny. Female genitalia: Apophyses stout, apophyses anteriores comparatively long (2/3 length of apophyses posteriores), lamella ante-vaginalis heart-shaped (length and width 0.45 mm), signum small, sclerotised, transverse ridge straight (0.15 mm).

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 19 - 27. Specimens of the genus Orbamia, ventral view. 19 Orbamia octomaculata 20 O. marginata 21 O. becki 22 O. renimacula 23 O. clarissima 24 O. clarior 25 O. obliqua 26 O. obliqua parva 27 O. ocellata. Scale bars: 1 cm.

Figures 37 - 45. Male genitalia of the genus Orbamia. 37 Orbamia octomaculata 38 O. marginata 39 O. becki 40 O. renimacula 41 O. clarissima 42 O. clarior 43 O. obliqua 44 O. obliqua parva 45 O. ocellata. Scale bar: 1 mm.

Figures 55 - 63. Aedeagus of male genitalia of the genus Orbamia. 55 Orbamia octomaculata 56 O. marginata 57 O. becki 58 O. renimacula 59 O. clarissima 60 O. clarior 61 O. obliqua 62 O. obliqua parva 63 O. ocellata. 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.