Prasinocyma angulifera, Hausmann, Axel, Sciarretta, Andrea & Parisi, Francesco, 2016

Hausmann, Axel, Sciarretta, Andrea & Parisi, Francesco, 2016, The Geometrinae of Ethiopia II: Tribus Hemistolini, genus Prasinocyma (Lepidoptera: Geometridae, Geometrinae), Zootaxa 4065 (1), pp. 1-63 : 35

Prasinocyma angulifera sp. n.

( Figs 38 , 77 , 105 )

Holotype. 1♂, C. Ethiopia, Oromia, southern Bale Mts, Harenna Forest, 2385m, 6.7139°N, 39.7268°E, 28.XII.2013 – 10.I.14, D. Wiersbowsky ( BC ZSM Lep 81482; gen.prp. G 19527)

Paratypes. Oromia: 6♂ 1♀, C. Ethiopia, Oromia, southern Bale Mts, Harenna Forest, 2385m, 6.7139°N, 39.7268°E, 28.XII.2013 – 10.I.14, D. Wiersbowsky ( BC ZSM Lep 81478; gen.prp. G 19526); 2♀, C. Ethiopia, Oromia, Southern Bale Mts, Harenna Forest, Katcha clearing, 1810m, 6.6167°N – 39.7782°E, 21.II. – 7.III.2014, D. Wiersbowsky; 1♂, Ethiopia, Oromia Region, sw Shewa Zone, Wenchi Crater Lake [8.781° N 37.891°E], 2900m (lux) 19.IV.2009, leg. A. Sciarretta, G. Spina (gen.prp. DAEF GI1); 3♂ 1♀, Ethiopia, Bale mountains, Harenna Forest Karcha Camp 2350m (lux) 20.II.2010, leg. F. Parisi, A. Sciarretta, coll. DAEF ( BC ZSM Lep 81814; gen.prp. DAEF GC, GF1); 1♂, Ethiopia, Bale mountains, Harenna Forest 1800m (lux) 22.II.2010, leg. F. Parisi. A. Sciarretta, coll. DAEF (gen.prp. DAEF GD).

Description. Adult ( Fig. 38 ). Wingspan. Male and female 23 – 26 mm. Ground colour leaf green, with slight bluish tinge, without pale irroration. Forewing costa and fringe whitish. Forewing with small white spot at 1/2 of the inner margin. Minute black discal dot on forewing, absent from hindwing. Hindwing termen angled at M3. Male frenulum present, but very weak. Abdomen with a dorsal row of small white dots. Length of male palpi 1.3 – 1.8 times diameter of eye, tip and upperside ochre, underside white. Length of female palpi 2.0 – 2.5 times diameter of eye. Frons brown, irrorated with green scales. Antennae bipectinate in male, filiform in female. Antennal branches ochre. Male hindtibia with white pencil, four spurs and large projection at tip, covering half of first tarsomere.

Male genitalia ( Fig. 77 ). Uncus long, narrow, tapering. Socii very short. Saccus round, comparatively short. Valva membranous, without sclerotized processes, at base with coremata. Juxta with two long posterior processes, dilated and rounded at tip. Aedeagus sigmoid, long (1.85 – 2.0 mm) and narrow, with long, finely spinulose ridge. Sternum A8 with two large membranous triangular projections, with a V-shaped deep notch at centre.

Female genitalia ( Fig. 105 ). Sterigma membranous, with concentric furrows around ostium bursae. Ductus bursae long (1.4 – 1.7 mm) and narrow, slightly sclerotized in the last third towards the slightly dilating, funnelshaped antrum. Corpus bursae elongate (1.8 – 2.0 mm), oval, membranous, signum absent.

Differential diagnosis. Differing from P. camerunalta in ground color more bluish, fringe white, hindwing termen angled, and in the white dorsal dots on the abdomen. In the shape of juxta (with long posterior processes, dilated and rounded at tip) very similar to P. camerunalta , but differing in the sternum A8 with longer and more tapering projections, sacculus not dilated and without digitiform process. For differential features from P. stefani sp. n. see following species.

Genetic data. BIN: BOLD:ACM0322. Nearest neighbour in Ethiopia: P. stefani (2.3%). Genetically not far from P. bifimbriata (6.5%), distance from P. albisticta 8.1%.

Etymology. The name refers to the angled hindwing termen; latin angulifera = angled.

Remarks. For the generic assignment see remarks to P. camerunalta and to the bifimbriata species-group.

Figures

FIGURES 37 – 42. Adults of Ethiopian Prasinocyma species. Scale Bar— 1 cm. In parantheses the ID-numbers of genitalia slides, and / or DNA barcoding, and / or nomenclatural status of the illustrated specimen are given. 37. Prasinocyma bifimbriata Prout, 1930; 38. Prasinocyma angulifera sp. n. (BC ZSM Lep 81482; Holotype); 39. Prasinocyma stefani sp. n. (gen. prp. ZSM G 16069; Paratype); 40. Prasinocyma albisticta (Warren, 1901) (BC ZSM Lep 85814); 41. Prasinocyma gemmifera sp. n. (BC ZSM Lep 78487; Holotype); 42. Prasinocyma discipuncta sp. n. (BC ZSM Lep 85813; Holotype).

FIGURES 76 – 79. Male genitalia of Ethiopian Prasinocyma species. Scale Bar (s) — 1 mm. In parantheses the ID-numbers of genitalia slides are given. 76. Prasinocyma bifimbriata Prout, 1930 (gen. prp. ZSM G 16142); 77. Prasinocyma angulifera sp. n. (gen. prp. DAEF GD); 78. Prasinocyma stefani sp. n. (gen. prp. ZSM G 16066); 79. Prasinocyma albisticta (Warren, 1901) (gen. prp. ZSM G 19643).

FIGURES 104 – 109. Female genitalia of Ethiopian Prasinocyma species. Scale Bar (s) — 1 mm. In parantheses the ID-numbers of genitalia slides are given. 104. Prasinocyma bifimbriata Prout, 1930 (gen. prp. ZSM G 19412); 105. Prasinocyma angulifera sp. n. (gen. prp. DAEF GI 1); 106. Prasinocyma stefani sp. n. (gen. prp. ZSM G 16069); 107. Prasinocyma albisticta (Warren, 1901) (gen. prp. ZSM G 15902); 108. Prasinocyma gemmifera sp. n. (gen. prp. ZSM G 15908); 109. Prasinocyma discipuncta sp. n. (gen. prp. ZSM G 15901).