Sacada pallescens Hampson, 1896

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 pallescens Hampson, 1896 Figs 12 , 13 , 31 , 32

Sacada pallescens Hampson 1896: 171.

Description.

Male, wingspan 32 mm (Figs 12 , 13 ). Pale rufous. Forewing speckled fuscous; a dark brownish basal spot; antemedial line smoothly curved; a speck on discocellular; postmedial line slightly curved below costa, then oblique to inner margin, some fuscous suffusion beyond it; cilia dark at tips; underside ochreous with rufous suffusion on basal half of costa, curved postmedial line present. Hindwing pale with indistinct, evenly curved postmedial line, crossed by a rufous streak on vein Cu2. Underside with curved postmedial line. Male genitalia (Figs 31 , 32 ). Uncus broad with a fold on lateral side; gnathos well developed, tip hooked; valva simple, without any process; tegumen broad; transtilla broad, forming inverted omega (ω) shape; juxta short and broad, slightly constricted at apex; saccus long; vinculum U-shaped; aedeagus long, vesica membranous with fine scobination, cornuti absent.

Diagnosis.

Sacada pallescens is unmistakable among the species studied due to the smoothly curved antemedial line (highly angled in other Indian species, except in S. unilinealis where it is absent) and hindwing which has a prominent rufous streak on vein Cu2.

Type material examined.

Lectotype (Fig. 13 ): BMNH (E) 1626923, male, Bhutan. 95-37.v.96, Sybrida pallescens Hampson/ Sacada pallescens Hampson det. M. Shaffer, 1976.

Other material examined.

India, Sikkim: 1 ♂, Dodak, 24.ix.2014, leg. R. Ranjan (Coll. NZC ZSI); India, Arunachal Pradesh: 1 ♂, Dibang valley, Italin, 26.x.2017, leg. N. Singh (Coll. NZC ZSI).

Remark.

The lectotype is hereby formally designated.

Figures

Figures 7 - 12. Adults of Sacada spp. 7 S. unilinealis Hampson (male), India 8 S. unilinealis Hampson (male), holotype, Sikkim, India 9 S. inordinata (Walker) (male), holotype, Darjeeling, India 10 S. dzonguensis, sp. nov. (male), India. 11 S. umtasorensis, sp. nov. (male), India 12 S. pallescens Hampson (male), India. Scale bars: 5 mm (7, 10, 11); 12.7 mm (12).

Figures 13 - 18. Adults of Sacada and Pseudosacada spp. 13 S. pallescens Hampson (male), lectotype, Bhutan 14 S. decora Walker, Singapore 15 Pseudosacada flexuosa (Snellen) (= Sybrida inflammealis Ragonot), India 16 P. flexuosa (Snellen) (male), Kanhmun, Mizoram, India 17 P. flexuosa (Snellen) (male), Umtasor, Meghalaya, India 18 P. flexuosa (Snellen) (male), Ganeshgudi, Karnataka, India. Scale bars: 5 mm (16 - 18).

Figures 27 - 32. Male genitalia of Sacada spp. 27, 28 Male genitalia of S. dzonguensis, sp. nov. 29, 30 male genitalia of S. umtasorensis, sp. nov. 31, 32 male genitalia of S. pallescens Hampson.