Sacada sikkima (Moore, 1879)

Singh, Navneet, Kirti, Jagbir Singh, Ranjan, Rahul, Chandra, Kailash & Speidel, Wolfgang, 2020, On the taxonomy of the genus Sacada Walker, 1862 from India, with descriptions of a new genus and two new species (Pyralinae, Pyralidae, Lepidoptera), ZooKeys 962, pp. 139-163 : 139

Sacada sikkima (Moore, 1879) Figs 1 , 2 , 19 , 20

Paravetta sikkima Moore 1879: 70.

Description.

Male, wingspan 28 mm (Figs 1 , 2 ). Adult dark purplish fuscous. Forewing with a dark rufous rectangular patch near base, touching antemedial line which is highly angled in interno-median interspace; postmedial line pale, sinuous, outwardly oblique from costa to vein M2, then very oblique to inner margin; area between antemedial and postmedial line paler and beyond postmedial line darker. Hindwing pale brown; a pale, slightly waved submarginal line crossed by a dark streak at vein Cu1. Male genitalia (Figs 19 , 20 ). Uncus broad with flaps on lateral side, gnathos reaching up to tip of uncus, tip hooked; valva simple, without any process; tegumen simple; transtilla broad with sclerotised, bifid process originating medially; juxta in form of two long arms, broad medially, spined apically; saccus deeply U-shaped; vesica membranous with fine scobination, without any cornuti.

Diagnosis.

Sacada sikkima is externally similar to S. constrictalis from India, but differs by its larger size, and in having the postmedial line outwardly oblique from the costa to vein M2, whereas, in S. constrictalis the postmedial lines is almost straight. In the male genitalia (Figs 19 , 20 ), the transtillar processes are longer; the juxta is larger.

Type material examined.

Lectotype (Fig. 2 ): BMNH (E) 1626971, male, Darjeeling, Moore coll. 94-106, Paravetta sikkima Moore, det. M. Shaffer, 1976.

Other material examined.

India, Sikkim: 1 ♂, Dodak, 24.ix.2014, leg. R. Ranjan (Coll. NZC ZSI). India, Uttarakhand: 1 ♂, Dehradun, 22.v.2014, leg. R. Ranjan (Coll. NZC ZSI). India, Meghalaya: 1 ♂, Umtasor, 15.ix.2014, leg. R. Ranjan (Coll. NZC ZSI). India, Mizoram: 1 ♂, Mamit, 08.ix.2016, leg. R. Ranjan (Coll. NZC ZSI); India, Arunachal Pradesh: 1 ♂, Dibang valley, Italin, 26.x.2017, leg. R. Ranjan (Coll. NZC ZSI).

Figures

Figures 1 - 6. Adults of Sacada spp. 1 S. sikkima (Moore) (male), India 2 S. sikkima (Moore) (male), lectotype, Darjeeling, India 3 S. constrictalis (Ragonot) (male), India 4, 5 S. discinota (Moore) (male), India 6 S. discinota (Moore) (male), lectotype, Darjeeling, India. Scale bars: 5 mm (1); 12.7 mm (3 - 5).

Figures 19 - 26. Male genitalia of Sacada spp. 19, 20 Male genitalia of S. sikkima (Moore) 21, 22 male genitalia of S. constrictalis (Ragonot) 23, 24 male genitalia of S. discinota (Moore) 25, 26 male genitalia of S. unilinealis Hampson.