Mirollia malaya, Ingrisch, Sigfrid, 2011

Ingrisch, Sigfrid, 2011, New taxa of Mirolliini from South East Asia and evidence for an abdominal gland in male Phaneropterinae (Orthoptera: Tettigoniidae), Zootaxa 2943, pp. 1-44 : 17

Mirollia malaya sp. n.

Figs. 2R, 11G, 12M–N, 13A, 14A–C, 17C, 19J, 20C, 21H

Holotype (male): Malaysia: Selangor, Kuala Lumpur, [3°9'N, 101°42'E], 30.viii.1936, leg. H.M. Pendlebury, depository: The Natural History Museum London ( BMNH).

Paratype: 1 female, Kuala Lumpur, Ulu Gombak [3°20'N, 101°45'E], 19.viii.1971, leg. R. Parrott ( BMNH).

Diagnosis. Similar to M. composita Bey-Bienko, 1962 from Yunnan with regard to general structure of male cerci and subgenital plate; it differs by the male cerci having a double curvation: ventrad behind base, mediad in apical area, with nearly strait apical area and the apex little widened and obliquely truncate with small curved tooth, the medial process of the male subgenital plate being nearly parallel sided with only apical lobes deviating, and by the rather simple, single pair of phallus sclerites. The female subgenital plate has a much stouter medial carina and shorter apical lobes. The same differences also hold for M. hexapinna Ingrisch, 1998 and M. quadripunctata Ingrisch, 1990 , both from Thailand. From M. fallax Bey-Bienko, 1962 , from Yunnan, it differs by the same characters except that the differences with regard to the male and female subgenital plates are less distinct.

Description. Fastigium verticis about triangular, furrowed, in lateral view with a step; apex obtuse; separated from fastigium frontis by a gap (Fig. 11G). Fastigium frontis narrow triangular, top obtuse. Disc of pronotum with anterior margin straight or faintly concave, posterior margin convex; paranota longer than high; humeral sinus distinct but not deep. Tegmen moderately wide; apex rounded (Fig. 2R).

Male. Tegmen with stridulatory area roughly triangular, large (Figs. 12M–N). Stridulatory file on underside of left tegmen concave and little curved; 2.19 mm long; teeth in basal third extremely dense, towards centre and apex dense; with 203 teeth, equating 93 teeth per mm; at base with 17.2, in middle with 6.2 teeth per 0.1 mm (Fig. 13A). Mirror on right tegmen roughly oval with anterior margin faintly concave; at end of basal quarter with incomplete cross-vein in outer area and curved deep depression in inner area; posteriorly bordering vein with minute teeth on top; 2.73 mm long, 1.95 mm wide; index length: width 1.40 (Fig. 12N). Second and third abdominal tergites setose in middle, in specimen studied glued together by a glabrous substance (Fig. 19J). Tenth abdominal tergite with apical margin triangularly excised in middle. Epiproct elongate, dorsally furrowed; apex obtuse (Fig. 14B). Cerci angularly bent latero-ventrad little behind base; after another short distance narrowed and bent apicad, then regularly curved; at beginning of apical third strongly bent mediad; apex little widened, truncate and with a spinule on top at proximal side curved proximad (Fig. 14B). Subgenital plate wide at base, with descending, approaching margins; in little more than apical half with a nearly parallel-sided, furrowed, medial projection, divided before apex into two deviating narrow cones (Fig. 14A). Phallus with a single pair of sclerites consisting of a faintly curved shaft and curved, serrulate apex (Fig. 17C).

Female. Cerci narrow conical, curved; apex subobtuse. Subgenital plate roughly triangular with central area strongly raised [artefact?]; apex truncate, in apical view funnel shaped (Figs. 20C, 21H). Ovipositor falcate.

Coloration. Female uniformly green. Eyes dark brown. Male discoloured yellowish brown, probably green when alive. Tegmen with stridulatory area suffused with black before and behind stridulatory vein (Fig. 12M); lateral areas with some large black dots surrounded by clouds of small black dots especially in posterior area (Fig. 2R). Hind tibiae with ventral spines sitting on black dots.

Measurements (1 male, 1 female). Body w/wings: male 26.5, female 30.5; body w/o wings: male 15, female 15; pronotum: male 3.9, female 3.9; tegmen: male 20.5, female 23.5; hind wing: male 22.5, female 28; hind femur: male 10.2, female 11.2; ovipositor: female 6 mm.

Etymology. Named after its occurrence on the Malay Peninsula.