Nephelomilta ranau Volynkin & Černý, 2018

Volynkin, Anton V. & Černý, Karel, 2018, Revision of the genus Nephelomilta Hampson, 1900, with descriptions of twelve new species and two new subspecies (Lepidoptera, Erebidae, Arctiinae), Zootaxa 4472 (3), pp. 401-451 : 414

Nephelomilta ranau Volynkin & Černý , sp. nov.

( Figs. 40–42 , 102, 103 , 135 )

Type material. Holotype ( Figs. 40 , 102 ): ♂, “ Indonesia, Sumatra, South Sumatra, 900 m, Lake Ranau, Tebah Hemi, 4°65’03’’S, 103°57’15’’E, 18.XI.2003, leg. Černý”, slide AV4151 ♂ Volynkin (Coll. MWM/ ZSM, ex coll. CKC).

Paratypes: 1 ♂, 1 ♀, same data as in the holotype, slides AV4147 ♂ Volynkin (coll. CKC); 1 ♂, Indonesia, Sumatra, Bandar Lampung, Bukit Rigis Mts., Gunung Terang, 1 0 22 m, 5°3’43’’S, 104°27’6’’E, 13–15.XI.2003, leg. Černý, slide AV4153 ♂ Volynkin (coll. CKC); 1 ♀, Indonesia, N Sumatra, Huta Padang, 175 m, 10.VIII.1989, leg. E. Diehl, slide AV2346 ♀ Volynkin (Coll. NHMUK, ex coll. CKC).

Diagnosis. Length of forewing is 9.5–10 mm in males and 10.5–11.5 mm in females. The new species is a closest relative of N. klapperichi , from which it differs externally in its ochreous-yellow thorax and forewing pattern. The male genitalia of N. ranau sp. nov. differ from those of N. klapperichi in the more developed medial costal angle, the significantly larger apical costal lobe, the significantly larger ventral-apical costal process, the slightly larger subapical saccular process, the slightly narrower distal diverticulum of the vesica with smaller cluster of small cornuti, and the significantly narrower medial diverticulum with smaller spines on its tip. The female genitalia of N. ranau sp. nov. differ from those of N. klapperichi in the narrower, trigonal ventral processes of subostial lobes, the significantly smaller spinules in the appendix bursae and the posterior section of the corpus bursae, and the stronger setose scobination around the signum.

Distribution. Endemic of Sumatra Island ( Indonesia).

Etymology. The species’ name refers to its type locality, Lake Ranau in South Sumatra.

Figures

FIGURES 37–49. Nephelomilta Spp.: ADULTS. 37, N. klapperichi, ♂, W Thailand (CKC); 38, N. klapperichi, ♂, S MyANmAR (©NHMUK); 39, N. klapperichi, ♀, S Myanmar (©NHMUK); 40, N. ranau, holotype ♂, Sumatra (MWM/ZSM); 41, N. ranau, paratype ♀, Sumatra (CKC); 42, N. ranau, paratype ♀, Sumatra (CKC); 43, N. pellucida, lectotype ♂, Java (©NHMUK); 44, N. pellucida, ♂, Java (ZMB); 45, N. pellucida, ♀, Java (ZMB); 46, N. bana, holotype ♂, C Vietnam (©NHMUK); 47, N. bana, paratype ♂, C Vietnam (CAV); 48, N. martini, holotype ♂, N Vietnam (©NHMUK); 49, N. martini, pARAType ♀, N VIeTNAm (©NHMUK).

FIGURES 102–104. Nephelomilta Spp.: mALe geNITALIA. 102, N. ranau, hOLOType, SUmATRA, SLIDe AV4151 VOLyNKIN; 103, N. ranau, pARAType, SUmATRA, SLIDe AV4147 VOLyNKIN; 104, N. pellucida, JAvA, SLIDe AV2902 VOLyNKIN.

FIGURES 134–141. Nephelomilta Spp.: femALe geNITALIA. 134, N. klapperichi, S MyANmAR, SLIDe VOLyNKIN (©NHMUK); 135, N. ranau, pARAType, SUmATRA, SLIDe AV4152 VOLyNKIN; 136, N. pellucida, JAvA, SLIDe AV2903 VOLyNKIN; 137, N. martini, pARAType, N VIeTNAm, SLIDe BMNH(E) ARCT-6547 VOLyNKIN (©NHMUK); 138, N. thomaswitti, pARAType, NepAL, SLIDe MWM 31664 VOLyNKIN; 139, N. babensis, C LAOS, SLIDe MWM 33708 VOLyNKIN; 140, N. karenkonis, TAIwAN, SLIDe MWM 31638 VOLyNKIN; 141, N. fangae, pARAType, ChINA, HAINAN, SLIDe MWM 31682 VOLyNKIN.