Truljalia formosa He

He, Zhuqing, 2012, A new species of Truljalia Gorochov 1985 from Taiwan (Orthoptera: Gryllidae; Podoscirtinae; Podoscirtini), Zootaxa 3591, pp. 79-83: 80-82

publication ID

http://doi.org/ 10.5281/zenodo.211315

persistent identifier

http://treatment.plazi.org/id/714E87E1-FFC7-AA5C-2DBA-98D3FC18EC26

treatment provided by

Plazi

scientific name

Truljalia formosa He
status

sp. nov.

Truljalia formosa He   sp. nov.

Figs. 1–11 View FIGURES 1 – 7 View FIGURES 8 – 10 View FIGURES 11 – 13

Description. Male. Medium size, slim body and nearly glabrous. Head is small and round. Frontal rostrum is little narrower than 1 st antennal joint. Pronotum widened posteriorly. Lateral margin has obviously edges. Tegmina with 4 long/ 3 short curved oblique veins on right and 3 long/ 3 short on left ( Fig. 8 View FIGURES 8 – 10 ). Mirror slightly shorter than wide (length ratio = 31: 27). Metanotal gland nearly triangular with few hairs on two sides which can not been seen from dorsal view ( Fig. 3 View FIGURES 1 – 7 ). External tympanum ovoid; internal tympanum slit-like with a swollen cover. Hind femur slender, not heavy. Dorsal spines on outer margin small and numerous, with 4 spurs in apical half. Dorsal spines on internal margin present only in basal half; apical half with 5 spurs which are obviously bigger than the outside ones. Supra anal plate is divided into two parts ( Fig. 4 View FIGURES 1 – 7 ) as typical of the Truljalia   Group I ( Gorochov, 2002).

Genitalia: Epiphallus with acute angle. Ectoparameres is very long with curved portion apical, but it becoming elliptical and flat posteriorly ( Fig. 5, 6 View FIGURES 1 – 7 , 9, 10 View FIGURES 8 – 10 ).

Female. Similar to male. Subgenital plate with deep median incision ( Fig. 7 View FIGURES 1 – 7 ).

Coloration. Body nearly yellow (green when alive). Antennae alternately black and pale segments. Head with black stripe from eye to pronotum; a yellow stripe from eye to lateral margins and subccostal vein, more prominent when alive. Ventral surface with a short black lateral stripe and one black spot which are positioned beside the lateral margins. Tegmen yellow, hind wing colourless, transparent; most veins brown but yellow in the apical field.

Song. Type: Calling song. Temperature: 21 degree. Date: 2012 -X- 8. ( Figure 11–13 View FIGURES 11 – 13 )

Song is quite regular and slow as 0.95 C/S. Every chirp includes 9–11 pulses. Chirps last for 266.3 ± 22.9 ms and pauses are 634.8 ± 102.8 ms. The first several pulses in each chirp are weak. Pulse is 35.57 ± 0.60 p/s. Main frequency is 5575 ± 49 Hz.

Measurements (mm). Male: body 18.0–22.0, length with wings 24.0–25.0, pronotum 3.0, tegmen 19.0–20.0, hind femur 9.0; female: body 18.0, length with wings 30.0, pronotum 3.2, tegmen 23.5, hind femur 11.0, ovipositor 9.0.

Type material. Holotype 3, Taiwan, Pingdong County, Chunri Town, Dahan Mountain (N 22.4 ° E 120.7 °), 2012 -X- 8. Altitude 1000m. HE Zhuqing & LIN Yixiang leg. ( IEAS)

Paratype: 131 Ƥ, same data as the holotype. 13, attracted by light, other data same as the holotype ( IEAS).

Diagnosis. The genitalia of the new species is similar with T. meloda Gorochov, 1992   , but the apical part of ectoparameres is ellipse and flat as same as T. hofmanni (Saussure, 1878)   .

Etymology. The new species is named after its locality, Taiwan.

IEAS

Institute of Entomology