Jambiliara Ingrisch, 1998

Ingrisch, Sigfrid & Tan, Ming Kai, 2012, New Taxa Of Agraeciini (Orthoptera: Tettigoniidae: Conocephalinae) From Singapore And Malaysia With A Review Of The Genus Jambiliara, Raffles Bulletin of Zoology 60 (1), pp. 137-155 : 145

Jambiliara Ingrisch, 1998

Jambiliara Ingrisch, 1998: 56 ; type species: Jambiliara macroptera Ingrisch, 1998 .

History. — The genus Jambiliara was described by Ingrisch (1998) for a species from central Sumatra. Two other, known species were provisionally assigned with it. All three species were only known from females. Meanwhile the senior author had the opportunity to re-examine the types of Jambiliara (?) laticauda (Karny, 1925) and Jambiliara (?) moultonii ( Karny, 1923) in BMNH and study additional specimens of the genus including males from the same and other collections. New specimens were discovered by the junior author during research on the Orthoptera diversity of Singapore. It thus becomes possible to give a review of the genus and describe the male characters for the first time. Specimens of the genus are rarely collected. They probably live in the canopy, as one of the males studied carries a label “dropped on jungle path from the canopy”.

Diagnosis. — The genus is characterised by the saddleshaped, rugose pronotum. The male subgenital plate is unique for its narrow, compressed appendages imitating styli, while the styli proper are largely reduced. The titillators are rather uniform within the genus but striking and unique for the long dorsal process.

Description. — Fastigium verticis conical, shorter than scapus; in frontal view rather well separated from fastigium frontis. Frons shining with shallowly impressed dots. Pronotum saddle-shaped, rugose or subrugose, disc broadly rounded into paranota, apical area raised, flattened, shouldered and with a medial carinula; transverse sulcus distinct, (sub-)interrupted in middle; anterior margin broadly rounded, posterior margin rounded; ventral margin subsinuate, sloping posteriorly, anterior angle rounded, posterior angle angularlyrounded, humeral sinus distinct but not deep. Fully winged, tegmen surpassing hind knees. Tegmen in about basal half with costal field widened, gradually narrowing into narrow apical area with parallel margins. Prosternum without spine, at most with two minute tubercles. Meso- and metasternum rather flat, lobes conical; medial plate without apical projection. Procoxa with spine; mesocoxa without spinule but with tubercle. Pro- and postfemur with spines on both ventral margins; mesofemur on ventro-external margin and sometimes one spine on ventro-internal margin. Knee lobes of profemur obtuse on external, angular to acute on internal side; of mesofemur obtuse or obtuse-angular on external, spinose on internal side; of postfemur spinose on both sides.

Male: Tenth abdominal tergite wider than long; dorsal area very little prolonged, faintly bi-globular with shallow medial furrow; apical margin excised in middle with a spinose projection on both sides of excision. Cerci short cylindrical, curved; with two preapical internal projections: a short spiniform on inner surface and a long compressed on ventrointernal margin. Subgenital plate longer than wide; mainly in lateral areas setose; triangularly excised from base; in ventral view basal half wider than apical half; about apical third curved dorsad in a 90°-angle or little more, not visible from below; in apical view wide-roundedly excised and provided with a pair of compressed projections that carry reduced styli near rounded apex. Titillators fused in middle and there with a common projection that is obtusely widening at tip; basal and apical areas compressed. Membranous part of phallus near titillator apex densely setose.

Female: Tenth abdominal tergite furrowed in midline, apical margin subtruncate but slightly projecting at each side of medial furrow. Epiproct rounded-triangular. Cerci cylindrical, slightly curved, apex pointing. Subgenital plate simple; rather weakly sclerotised and subject to distortion when dried up. Ovipositor compressed blade-shaped, highest behind middle of length, margins smooth.