DUCETIA MELODICA HELLER, 2017

Heller, Klaus-Gerhard, Ingrisch, Sigfrid, Liu, Chun-Xiang, Shi, Fu-Min, Hemp, Claudia, Warchałowska-Śliwa, Elżbieta & Rentz, David C. F., 2017, Complex songs and cryptic ethospecies: the case of the Ducetia japonica group (Orthoptera: Tettigonioidea: Phaneropteridae: Phaneropterinae), Zoological Journal of the Linnean Society 181, pp. 286-307 : 294

DUCETIA MELODICA HELLER

& INGRISCH SP. NOV.

(SONG FIG. 9. STRIDULATORY ORGANS FIGS 13, 15, 17.)

urn:lsid: Orthoptera .speciesfile.org:TaxonName:496317

Material examined: Holotype (male): Thailand, Bangkok, Lardprao, northern suburbs of Bangkok (near Poonsiri Village , about 13°50′N, 100°35′E), 5–8 June 1988, leg. S. Ingrisch (depository: Museum Koenig, Bonn, ZFMK).

Paratypes: same data as holotype – 2 males (1 ZFMK, 1 coll. Ingrisch) .

Diagnosis: Song unit of calling song consisting of three phases, the last two alternatingly repeated several times. It differs from the structurally similar calling song of D. neochlora most notably by a relatively low SRR (c. 20 Hz) in the second phase and three-parted syllables in the third phase ( Table 3; see ‘Bioacoustics’ section for details).

It differs morphologically by the male stridulatory apparatus having the dorsal side of the stridulatory area of the left tegmen vaulted, the stridulatory vein with a distinct angular fold separating the narrow teeth from the large teeth, the mirror on the right tegmen having the posteriointernal angle nearly rectangular and not projecting, and just behind the scraper and before the mirror with a vertically elevated lamellar projection that may serve as a secondary scraper (see Fig. 17C).

Description: General habitus, tegminal venation with five direct branches of radius and shape of male cerci with apical area widened and with a lamella along ventral margin as in D. japonica (as described, e.g., in Ragge, 1961). See text SI3 for details.

Habitat: Fallow land (seasonally flooded), roadside vegetation, and gardens. Sings in bushes at night.

Distribution: At present only known from the type locality.

Etymology: Named after the melodious stridulation that gave the stimulation to collect the specimens thought to belong to a common species. Latin adjective (= melodic), following Ducetia in gender.

BIOACOUSTICS