Ogulina ochrocinerea Sugi, 1995

[Fig. 6 B; Fig. 7 D–F]

1995. Ogulina ochrocinerea Sugi, Tinea, 14 (2): 111.

2013. Biula (Ogulina) ochrocinerea; Schintlmeister, World Cat. Ins., 11: 61.

2016. Ogulina ochrocinerea; Kobayashi & Nonaka, Tinea, 23 (1): 67.

TL: Godavari [Nepal]; TD: NSM

Material examined: India: 1 ♂, Uttarakhand, Pithoragarh dist., Askot WLS, Kanar, 1843 m, 29.9049 °N, 80.4039 °E, 11. VI. 2018; 2 ♂, 2061 m, 29.9113 °N, 80.4069 °E, 13. VI. 2018; 1 ♂, Gowal Ghat, 2248 m, 29.9139 °N, 80.4033 °E, 14. VI. 2018, leg. A. K. Sanyal & G. N. Das.

India: 1 ♂, Arunachal Pradesh, Dibang Valley dist., Dihang-Dibang BR, Anini, Oldschool, 1642 m, 28.7992 °N, 95.9145 °E, 16. IV. 2017; 1 ♂, 21. IV. 2017; 1 ♂, Mahe, 1556 m, 28.9953 °N, 95.8066 °E, 24. V. 2017, leg. S. Gayen & Team; 1 ♂, Ebalin, 1609 m, 29.0167 °N, 95.8070 °E, 18. IV. 2018, leg. R. Ranjan & G. N. Das.

Diagnosis: Forewing length: ♂ 17.5–20 mm. Ogulina ochrocinerea is externally similar to O. argentilinea (Cai, 1982) and O. eupatagia (Hampson, 1893), but can be differentiated by following features: the forewing ground colour in O. ochrocinerea is ochreous-brown with longitudinal, irregular, orange-brown to dark fuscous-grey suffusions, whereas the other two species have paler forewing with varying degree of golden-orange to yellow suffusions. The most distinguishing feature of O. ochrocinerea is the curved, fuscous, medial band running obliquely from costa to before the middle of inner margin, being most prominent near costa and gradually diffusing towards inner margin. In male genitalia, O. ochrocinerea shares identical features with O. argentilinea, but lacks the spine-like process in the uncus present in O. argentilinea. Valvae apex is more acute in O. ochrocinerea, while it is rather roundish in O. argentilinea. The sacculus is narrow with a small spine in O. argentilinea, but broader, semicircular and devoid of any spine like process in O. ochrocinerea. The phallus is apically curved in O. ochrocinerea, while it is rather straight in O. argentilinea. Minute differences also exist in the sclerotization of the 8 th sternite, the posterior tails of which are more proximal to each other in O. ochrocinerea than in O. argentilinea.

Remarks: The present record of O. ochrocinerea from Western as well as Eastern Himalaya extends the known range of the species both geographically and altitudinally. Current geographical range of the species can be considered from Pithoragarh district of Uttarakhand to Dibang valley in Arunachal Pradesh, thus extending distribution limit both eastward and westward. While, the species was originally described from 1600 m altitude in Nepal (Sugi 1995), current records extend its range from 1550 m to 2250 m (Fig. 2). The species was found to prefer Western Mixed Coniferous Forest dominated by Quercus Linnaeus species in Western Himalaya during the month of June. Whereas, in Eastern Himalaya, it was observed in Subtropical Wet Hill Forest dominated by Castanopsis (D. Don) Spach, Schima Reinwardt ex Blume, Bohmeria Jacquin etc. during the months of April-May. The genus Ogulina was considered a subgenus of Biula by Schintlmeister (2013), but later reinstated as valid genus based on wing pattern and male genitalia characters by Kobayashi & Nonaka (2016). Until now this genus was known only by single species, O. eupatagia, from India (Chandra et al. 2018), our record adds a second species.