Abraxas (Calospilos) antipusilla Inoue 1995
Creators: name: Gayen, Subrata
name: Chandra, Kailash
Publisher: name: Zenodo
Year: 2023
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Lepidoptera
Geometridae
Abraxas
Abraxas antipusilla

description: Abraxas (Calospilos) antipusilla Inoue, 1995
(Fig. 2A–H)
Abraxas (Calospilos) antipusilla Inoue, 1995, In: Haruta et al., Tinea, 14 (suppl. 2): 122, pl. 120, figs. 9–10. Type Locality: Mahakali, Dandeldhula [Nepal]
Diagnosis: Forewing length 17.22–21.71 mm in males, 19.70–21.38 mm in females. A. antipusilla is externally extremely similar to A. pusilla, however A. antipusilla larger in comparison. In male genitalia characters, A. antipusilla differ significantly by the triangular broad valvae with reduced dorsal margin. Furthermore, the size of the aedeagus is longer compare to A. pusilla (Fig. 2A).
Redescription of male and female genitalia: In male genitalia uncus triangular, bulbous at the apex; costal basal process straight and slightly curved at the apex; valvae broad, triangular; dorsal margin much reduced, dorsal flap comb shaped except the marginal spines slightly pronounced, outer margin straight, running oblique to the ventral margin giving the valvae a triangular shape, ventral margin curved with a medial prominent less sclerotized spine; juxta narrow, triangular, less sclerotized; saccus broad, triangular and sclerotized (Fig. 2C); aedeagus much elongated, slender and slightly arcuate with truncate apex, a small subapical spine present (Fig. 2D).
In female genitalia papilla analis elongated and with long setae; anterior apophysis ½ the length of posterior apophysis (Fig. 2E); ostium bursae sclerotized and lamella antevaginalis reduced, ‘V’ shaped (Fig. 2G); antrum short, sclerotized, colliculum elongated, broad, sclerotized; ductus bursae short, stout, broad, slightly sclerotized; corpus bursae ellipsoid with minute scobinations (Fig. 2E); signum round, less sclerotized, having 15 to 17 large spines, medial spines very sparse and minute (Fig. 2F).
Variation: In some specimens, median area of forewing having complete grey suffusion; antemedial line complete from costa to the inner margin (Fig. 2B).
Material examined: India: [Arunachal Pradesh]: Dihang Dibang Biosphere Reserve: 1 ♀, Anilieh, 28.5280 °N, 95.7718 °E, 830 m, 09.XII.2016, legit. S. Gayen and Party; 1 ♀, Basam, 28.0545 °N, 95.7836 °E, 1968 m, 26.V.2017, legit. Gayen and Tacho; 1 ♀, 1 ♁, Anini Base, 28.7870 °N, 95.9094 °E, 1675 m, 26.V.2017, legit. R. Ranjan & Nandi Das; 1 ♀, Anini Base, 28.7870 °N, 95.9094 °E, 1675 m, 20.IV.2018, legit. R. Ranjan & Nandi Das; Tawang: 2 ♀, Lumla, 91.7290 °N, 27.5340 °E, 1982 m, 01.VI.2019, legit. Dibyajyoti Ghosh & team; [Uttarakhand]: Govind National Park and Wildlife Sanctuary: 1 ♀, Kedarkata, 31.2886 °N, 78.1618 °E, 3230 m, 29.V.2012, legit. A. K. Sanyal; Askot Wildlife Sanctuary: 2 ♀, Chipla Kedar, 29.9663 °N, 80.4259 °E, 4216 m, 30.VI.2018, legit. A. K. Sanyal & Nandi Das; Valley of Flowers National Park: 1 ♁, Ghangaria, 30.7012 °N, 79.5940 °E, 3128 m, 28.VIII.2016, legit. S. K. Sajan & Party; 3 ♁, Ghangaria, 30.7012 °N, 79.5940 °E, 3128 m, 18.VI.2017, legit. S. K. Sajan & Party; [Sikkim]: Khangchendzonga Biosphere Reserve: 1 ♁, Khongtay, 27.3794 °N, 88.2267 °E, 1950 m, 28.XI.2019, legit. A. K. Sanyal & Party; [West Bengal]: Neora Valley National Park: 4 ♀, Lava, 27.0863 °N, 88.6597 °E, 2083 m, 03.IX.2016, legit. K. Bhattarcharyya and Party; 4 ♀, Rishop, 27.1073 °N, 88.6512 °E, 2136 m, 05.IX.2016, legit. K. Bhattarcharyya and Party; 1 ♀, Neora, 27.0863 °N, 88.6597 °E, 2083 m, 06.XI.2016, legit. K. Mondal and Party; Singalila National Park: 1 ♁, Gairibash, 27.0509 °N, 88.0336 °E, 2494 m, 21.V.2018, legit. K. Bhattarcharyya and Party; 3 ♁, Manebhanjan, 26.9877 °N, 88.1194 °E, 1975 m, 16.X.2018, legit. A. K. Sanyal and Party; 2 ♁, Sirikhola, 27.1322 °N, 88.0766 °E, 1883 m, 17.X.2018, legit. A. K. Sanyal and Party; 1 ♁, Rimbik, 27.1141 °N, 88.1105 °E, 1905 m, 18.X.2018, legit. A. K. Sanyal and Party; 1 ♀, Manedara, 27.1141 °N, 88.1000 °E, 2168 m, 25.X.2018, legit. A. K. Sanyal and Party; 1 ♀, Palmajua, 27.0707 °N, 88.0907 °E, 1909 m, 03.XI.2018, legit. K. Bhattarcharyya and Party.
Distribution: India: Arunachal Pradesh, Sikkim, Uttarakhand, West Bengal (Present study) Global: Nepal (Haruta 1995).
Remarks: This species is reported for the first time from Eastern Himalaya, India.
description: Published as part of Gayen, Subrata & Chandra, Kailash, 2023, A new distributional range of Abraxas antipusilla Inoue, 1995 (Lepidoptera: Geometridae) from Eastern Himalaya, India, pp. 187-194 in Zootaxa 5228 (2) on pages 189-192, DOI: 10.11646/zootaxa.5228.2.6, http://zenodo.org/record/7532309