Liara (Unalianus) heteracanthus ( Redtenbacher, 1891 )

Kumar, Hirdesh, Kushwaha, Sandeep & Chand, D. Suresh, 2021, Rediscovery of Liara (Unalianus) heteracanthus (Redtenbacher, 1891) (Orthoptera: Tettigoniidae: Conocephalinae: Agraeciini) from India with notes on its distribution, Zootaxa 5020 (1), pp. 166-170 : 167

Liara (Unalianus) heteracanthus ( Redtenbacher, 1891)

Figs 1–2

http://lsid.speciesfile.org/urn:lsid: Orthoptera .speciesfile.org:TaxonName:509028

Oxystethus heteracanthus Redtenbacher, 1891: 443 (Holotype - male. “Hinterindien” (coll. Brunner); deposited in NMW, Vienna Museum); Brongniart, 1897: 81; Kirby, 1906: 257; Karny, 1912: 16; Ingrisch, 1998: 70.

Unalianus heteracanthus Koçak & Kemal, 2009: 2 .

Materials examined: INDIA, Mizoram, Champhai , 23.89346944N, 93.27944444E, alt. 1603m., 1 male, 08-v-2019 (Coll. by Sonam) .

Redescription:

Male ( Fig. 1 ): Body stout. Head ( Fig. 2A ) wide. Antennae broken; antennal sockets ( Fig. 2A, B ) located near the top of head not strongly rimmed; antennae separated at the base by a distance equal to or greater than the length of the first antennal segment. Fastigium of vertex ( Fig. 2A ) straight; not sulcate above; produced forward as a slen- der spine. Frons ( Fig. 2B ) shining, subrugose. Pronotum ( Fig. 2A, C ) semi-cylindrical, disc without distinct lateral angles, subrugose; median carina weak but distinct beyond transverse sulcus; transverse sulcus curved, interrupted in middle; anterior margin subtruncate in middle; humeral sinus distinct; lateral lobes of pronotum with an auditory swelling; ventro-anterior angle of pronotum rounded; thoracic auditory spiracle large and elongate, concealed by pronotum. Prosternum unarmed. Meso and metasternal lobes ( Fig. 2D ) triangularly-rounded, spiniform. Tegmina fully developed; surpassing the abdomen as well as hind knees; apex rounded. Hind wings shorter than tegmina. Tympanum on fore tibia closed. Coxa of fore leg spined. Fore femur ( Fig. 2H ) on ventro-internal margin with large and small spines; genicular lobes not spined. Middle ( Fig. 2J ) and hind ( Fig. 2K ) femurs on ventro-external margin with large and small spines. Middle femur ( Fig. 2J ) with only inner genicular lobe spined. Hind femur ( Fig. 2K ) with both the genicular lobes spined. Fore ( Fig. 2H, I ) and middle ( Fig. 2J ) tibia with spines on ventral side only. Hind tibia ( Fig. 2L ) with spined on both dorsal and ventral side. Apical margin of 10 th abdominal tergite ( Fig. 2E ) slightly emerginate, lobes rounded and short. Male cerci ( Fig. 2E, F ) apically incurved and bifurcated into a broad dorsal and a narrow ventral lobe; dorsal lobe with apex terminating in a spine at dorsal margin and rounded below that spine; ventral lobe with acute apex. Subgenital plate ( Fig. 2G ) with subparallel lateral margins, apex with a broad, triangularly rounded excision; with small styli. Titillators fused in centre; basal and apical parts strongly deviating, together circa X-shaped; apex narrow boot-shaped with margins irregularly dentate and surface spinulose.

Measurements (in mm):

Male: Body: 27.0; Pronotum: 8.0; Tegmina: 25.0; Hind Femur: 17.5.

Distribution: India: Mizoram.

Figures

FIGURE 1. Liara (Unalianus) heteracanthus (Redtenbacher, 1891) (Male). A–dorsal view. B–lateral view.

FIGURE 2. Liara (Unalianus) heteracanthus (Redtenbacher, 1891) (Male). A—Head & pronotum, dorsal view. B—Frons. C—Head & pronotum, lateral view. D—Sternum, ventral view. E—Abdominal apex, dorsal view. F—Abdominal apex, apical view. G—Abdominal apex, ventral view. H—Fore leg, ventral view. I—Fore tibia, dorsal view. J—Middle leg, ventral view. K—Hind femur, ventral view. L—Hind tibia, dorsal view.