Letana mursinga Ingrisch & Shishodia, 2000

Kumar, Hirdesh & Chandra, Kailash, 2020, First description of the female of Letana mursinga Ingrisch & Shishodia, 2000 (Orthoptera: Tettigoniidae; Phaneropterinae; Letanini) from India, Zootaxa 4729 (4), pp. 589-594 : 590-591

Letana mursinga Ingrisch & Shishodia, 2000

http://lsid.speciesfile.org/urn:lsid: Orthoptera .speciesfile.org:TaxonName:12283

Letana mursinga Ingrisch & Shishodia, 2000: 18 (Holotypes—male; India: Arunachal Pradesh, Kameng, Kalaktang, Mursing; deposited in National Zoological Collection of the Zoological Survey of India (NZSI Calcutta); Shishodia, 2003: 83; Shishodia et al., 2010: 304.

Materials examined: India, Arunachal Pradesh, District Tawang, Lumla , 27.5377N, 91.72013333E, alt. 2317m., 1 ♀, 15.ix.2016 ( Collected by J. Saini and Party ); District Changlang , Namdapha National Park , Deban , 27.497083N, 96.390933E, alt. 361m., 1 ♂, 28.x.2016 (Collected by J. Saini and Party); District Tawang , Jang , Nuranang Falls , 27.58987N, 91.98082E, alt. 2012m., 1 ♀, 11.xi.2017 (Collected by H. Kumar); Jang Da , 27.59853N, 91.976455E, alt. 2572m., 1 ♂, 20.ix.2018 ( Collected by J. Saini and Party ); 1 ♂, 21.ix.2018 (Collected by J. Saini and Party); Jang , 27.578N, 91.976E, alt. 2274m., 1 ♀, 23.ix.2018 ( Collected by J. Saini and Party ).

Description:

Female ( Fig. 2 ): Smaller in size. Head obtusely rounded in profile. Antennal scapus more than one and a half times longer than wide. Fastigium of vertex compressed and narrow, dorsally furrowed. Eyes rounded and bulging. Pronotum short, first transverse sulcus sub-interrupted in middle; second transverse sulcus U-shaped; anterior margin coneave; posterior margin bilobate. Paranota longer than high, ventral margin rounded, slightly concave in middle; humeral sinus weak. Brachypterous; tegmina slightly reaching to middle of abdomen, wide at base and narrowing towards rounded apex. Hind wings of almost equal to tegmina. Anterior coxa with a very small tubercle at dorsal margin. Tibial tympana open. Tenth abdominal tergite ( Fig. 2C ) truncated. Supra-anal plate ( Fig. 2C ) rounded. Cerci ( Fig. 2C ) conical, longer than supra-anal plate, almost three times longer than wide, apex obtuse. Ovipositor ( Fig. 2E ) sickle shaped, dorsal margin serrulate in apical half, ventral margin serrulate in apical one third. Subgenital plate ( Fig. 2D ) triangular, margins diverging posteriorly, apical margin broadly rounded.

Measurements (mm): Length of body: ♂ 13.4±0.7, ♀ 15.4±0.4; length of head: ♂ 1.8±0.1, ♀ 2.2±0.2; length of pronotum: ♂ 3.0±0.08, ♀ 3.1±0.2;length of tegmen: ♂ 5.7±0.4, ♀ 7.2±0.7; length of hind femur: ♂ 15.1±0.1, ♀ 15.2±0.3; length of hind tibia: ♂ 19.3±0.4, ♀ 16.8±1.2; length of ovipositor: ♀ 8.8±0.4.

Coloration: Body yellowish brown with a number of dots. Antennal scapus with one band on dorsal and one band on internal surface, flagellum dark brown. Tegmen darker in upper half with a dark brown dorsal band, lower half lighter in colour.

Distribution ( Fig. 3 ): India: Arunachal Pradesh.

Discussion: Letana mursinga Ingrisch & Shishodia, 2000 is closed to L. braehyptera Ingrisch, 1987 and L. emanueli Ingrisch, 1990 as suggested by Ingrisch & Shishodia (2000). But female of L. mursinga Ingrisch & Shishodia, 2000 differs from females of both these species in the presence of triangular shape of subgenital plate which is rounded in L. braehyptera Ingrisch, 1987 and truncated in L. emanueli Ingrisch, 1990 .

Figures

FIGURE-2: Letana mursinga Ingrisch & Shishodia, 2000 (female): A—Dorsal view; B—Lateral view; C—Dorsal view of abdominal apex; D—Ventral view of abdominal apex; E—Lateral view of abdominal apex.

FIGURE-3: Distribution of Letana mursinga Ingrisch & Shishodia, 2000.