Tapiena denticulata Tan, Liu, Artchawakom

Tan, Ming Kai, Liu, Chunxiang & Artchawakom, Taksin, 2015, Taxonomic review of Tapiena (Orthoptera: Phaneropteridae: Phaneropterinae), with key to species and new species from Thailand, Zootaxa 3920 (1): -

publication ID

http://dx.doi.org/10.11646/zootaxa.3920.1.2

publication LSID

lsid:zoobank.org:pub:6A4779B4-DAE6-4168-9CD4-0F46B871FF66

DOI

http://doi.org/10.5281/zenodo.5671887

persistent identifier

http://treatment.plazi.org/id/38500F2C-B745-FFC1-FF31-FF6AA4C541E3

treatment provided by

Plazi

scientific name

Tapiena denticulata Tan, Liu, Artchawakom
status

new species

Tapiena denticulata Tan, Liu, Artchawakom   new species

( Fig. 6 View FIGURE 6 )

Material examined. Holotype (male): Thailand, Nakhon Ratchasima, Sakaerat   Environmental Research Station, open area with light trap, N 14.50765, E 101.92772, 446.7 ± 9.7 m, dry evergreen forest, attracted to light trap, coll. M. K. Tan, H. Yeo & S. T. Toh, 27 June 2014, 2220 hours ( SERS. 14.117) ( ZRC).

Paratypes: 2 males. Same locality as holotype: open area with light trap, N 14.50788, E 101.92765, elev. 413.9 ± 5.6 m, dry evergreen forest, attracted to light trap, coll. M. K. Tan, H. Yeo & S. T. Toh, 23 June 2014 ( SERS. 14.13); open area with light trap, N 14.50765, E 101.92772, 446.7 ± 9.7 m, dry evergreen forest, attracted to light trap, coll. M. K. Tan, H. Yeo & S. T. Toh, 27 June 2014, 2220 hours ( SERS. 14.124) (all ZRC).

Diagnosis. This species is typical of the genus but differ from all other species by apex of male cercus bladelike, acute and sclerotized, with dorsal margin denticulate. This species is very similar to Tapiena cerciata Hebard, 1922   and Tapiena stylata Bey-Bienko, 1935   by highly modified male cercus, forming a blade-like structure but differs by male subgenital plate deeply excised between apical lobes and modifications in male cercus.

Description. Habitus as shown in Fig. 6 View FIGURE 6 A, typical of genus. Generally similar to T. sakaerat   sp. n. but is slightly larger (mean BWL = 48.4 mm, n = 3) and differ by: head with length circa 0.4 times of pronotum length (n = 3); pronotum circa 1.3 times longer than wide (n = 3), with anterior margin of dorsal plate slightly concave (instead of straight in T. sakaerat   sp. n.) and lateral lobe circa as tall as long (n = 3) ( Fig. 6 View FIGURE 6 B); mesosternum triangular but stouter and with more rounded apex. Also differ slightly from T. sakaerat   sp. n. in tegmen venation: radius sector (Rs) originates before middle, with fork only slightly longer than stem.

Male. Stridulatory file of left tegmen generally similar to T. sakaerat   sp. n. in shape but differ in measurements and counts: substraight, feebly crescent-shaped, circa 3.1 mm (n = 1, paratype) in length; file with about 24 (n = 1) stout and more widely spaced teeth at the posterior end, with circa 116 (n = 1) densely and evenly spaced elongated teeth (more closely packed at the sides than in the middle) ( Figs. 6 View FIGURE 6 C, 6 D). Tenth abdominal tergite forms a setose plate apically; plate wider than long, with lateral margins converging inwards and apical margin truncated and slightly emarginated in the middle ( Figs. 6 View FIGURE 6 E, 6 F). Epiproct concealed beneath tenth abdominal tergite, slightly exposed at the apex; apex tongue-shaped. Cercus elongated and setose; curved dorso-ventrally (when viewed laterally) and inwards (when viewed dorsally) after middle ( Figs. 6 View FIGURE 6 E, 6 F); apex blade-like, acute and sclerotized, with dorsal margin denticulate ( Figs. 6 View FIGURE 6 E– 6 G). Subgenital plate slender, longer than broad; apical half forms an elongated and narrow shaft; apical margin very narrowly and deeply excised in the middle, laterally produced into two cylindrical lobes ( Fig. 6 View FIGURE 6 G); styli long and slender, slightly curved inwards apically, with apex subacute ( Figs. 6 View FIGURE 6 F, 6 G).

Female. Unknown.

Colouration. Generally green when alive, very similar to T. sakaerat   sp. n. ( Fig. 6 View FIGURE 6 A).

Measurements. See Table 1 View TABLE 1 .

Etymology. This species name refers to the denticulated margin at the apex of male cercus; derived from the Latin word denticulata   (= denticulate, feminine).

Life history. This species inhabits dry evergreen forest and is attracted to light at night.

ZRC

Zoological Reference Collection, National University of Singapore