Ypthima shirozui, Sharma, 2019

Sharma, Narender, 2019, Reporting of two new species of Genus Ypthima Hübner (Lepidoptera: Nymphalidae) from Myanmar, Records of the Zoological Survey of India 119 (2), pp. 95-102 : 97-101

2. Ypthima shirozui sp. nov.

Adult(Male): Frontoclypeal area of head clothed with brown hair & scales; dark brown eyes, glabrous, medium sized; labial palpi directed upwardly, three segmented, middle segment long, distal segment narrowing towards apex, basal and middle segment densely covered with brown and black scales & hair; antenna 8.0 mm, slender and brown club, Reporting of two new species of Genus Ypthima Hübner ( Lepidoptera : Nymphalidae ) from Myanmar nudum lies between the base of the flagellum and the base of the club, the flagellum brown; thorax clothed with sparse brown hair dorsally and ventrally; foreleg not developed, meso and meta legs white scaled, tibia shorter than femur, tarsus with five segments and clawed; ground colour of upperside pale brown; forewing upperside with inner discal fascia absent, outer discal fascia obscure, submarginal fascia dark and prominent, subapical black, bipupilled, slightly oblique, narrowly ringed with diffuse yellow, yellow ring may absent, brand prominent, underside grayish white, inner discal fascia, outer discal fascia and submarginal fascia well developed, subapical ocellus as on upperside but yellow ring prominent and broader than upperside; uppperside of hindwing pale brown inner discal fascia absent, outer discal fascia obscure, submarginal fascia prominent, two unipupilled, black, narrowly ringed with diffuse yellow ocelli present in M 3 and Cula, ocelli may without yellow ring, single or double minute ocellus in Culb may present, underside Ypthima shimai sp.n.: 1. Holotype male (Dorsal side).

Plate

Ypthima shirozui sp.n.: 3. Holotype male (Dorsal side).

Ypthima shimai sp.n.: 2. Holotype male (Ventral side).

ground colour as on the forewing underside, inner discal fascia ill defined, outer discal fascia angled outwards in space M 2, submarginal fascia distinct, six unipupilled, small, black, very narrowly ringed with yellow, ocelli present, two in Rs and M 1, two in M 3 and Cula, two in Culb. In dry season form, these ocelli are in the form of black dots.

Venation: Cell forewing less than half the length of wing, vein R 1 arising beyond the upper angle of the cell, udc oblique and minute, mdc incurved, ldc almost straight; Cell hindwing more than half the length of wing, Cula before the lower angle of the cell, humeral vein (h) T-shaped.

Abdomen covered with brown scales dorsally & ventrally with white scales.

Ypthima shirozui sp.n.: 4. Holotype male (Ventral side).

Length of the forewing: Half: Male: 18.00 - 22.00 mm.

Adult (Female): Not studied.

Male genitalia (Figures 11-16): Tegumen base broad dorsally, gradually tapers posteriorly, shorter than vinculum in height in lateral view, a small finger-like outgrowth present at anterior margin; in dorsal view, uncus gradually narrowing towards apex, shorter than tegumen, in lateral view, slightly curved ventrally with narrow membranous incision at base, sparsely setosed with minute scales; fenestrula represented by a small, membranous, rounded spot, appendix angularis small with blunt distal end; vinculum broader ventrally, slightly inwardly curved; saccus moderately long, narrow at apex, tubular equal to 1/3 x as long as ring; valva broad, costa with flap-like costal process, distal end with dorsal conical process and ventral finger-like process which has few serration on inner margin, setae present on ventral margin; aedeagus in dorsal view nearly straight, broader at both the ends, in lateral view curved dorsally, subzone and suprazone subequal, ductus entering dorsad; juxta broad and V-shaped.

Material examined: Holotype: ♂, Myanmar, South Shan States , 11.iii.1890 (Regdno.7069/H9),deNicevillecollection.

Paratypes: Myanmar, South Shan States , 2 ♂, dsf., 11.iii.1890 (Regd no.7067/H9, 7068/H9), de Niceville collections; Upper Myanmar, Jilin Yaw , 1 ♂, dsf., 11.iii.1890 (Regd no. 7066/H9), de Niceville collection ; Myanmar, Katha Road , 1 ♂, 1.iii.1890 (Regd no. 7071/H90, de Niceville collection; Upper Myanmar, Chindwin, Kalwa, 3♂, iii.1890 (Regd no. 7072/H9, 7073/H9, 7074/H9), de Niceville collection; Lower Burma, Thaungyon, 1♂, 1.iii.1890, (Regd no. 7076/ H9) de Niceville collection.

Etymology: The species is named in honour of Dr. Takashi Shirozu, Biological Laboratory, college of General Education, Kyushu Univeristy, Ropponmatsu, Fukuoka 810, Japan for his contributions in the taxonomy of the subfamily Satyrinae ( Lepidoptera ).

Remarks: This species is studied from the old de Niceville collections housed at Zoological Survey of India, Kolkata.

The species is closely related to Ypthima singala , however it differs from the latter species as given below: