Trichophallus umboi, Ingrisch, 2024

Ingrisch, Sigfrid, 2024, Revision of the genus Trichophallus Ingrisch, 1998 with notes on the genera Secsiva Walker, 1869 and Subrioides C. Willemse, 1966 (Orthoptera: Tettigoniidae: Conocephalinae: Agraeciini), Zootaxa 5442 (1), pp. 1-66 : 52-53

Trichophallus umboi sp. nov.

Fig. 26

Holotype (female): Papua New Guinea: New Guinea (NE), Umboi Island ca 8 km WNW Lab Lab, 300 m, 8–19.ii.1967, leg. G.A. Samuelson, at light.

Depository: Bishop Museum, Honolulu (BPBM).

Diagnosis. The new species can be recognised by its large and stout appearance. It is larger than the majority of the other species of the genus. The female subgenital plate resembles in anterior area the shape in T. gracilis but has the marginal areas stiffened, widened, and strongly prolonged with the apical areas compressed and with the internal margins rounded, convex, the external margin little concave and the tip acute. T. umboi differs from other species of the genus by the strongly prolonged female subgenital plate.

Description. Larger and stouter than the majority of the other species of the genus. Apart from this the new species differs by the prolonged female subgenital plate that markedly surpasses the lateral lobes of the ventral ovipositor valves. The basal dorsal projection of the subgenital plate is furrowed in about mid-length. The ventral area of the subgenital plate has the transverse anterior area furrowed in midline, the lateral branches elevated but laterally compressed, while in the apical area it becomes dorso-ventrally compressed, little widened on convex internal margin and terminates into a subacute tip.

Male unknown.

Measurements of female.—total length with wings 48; body: 28; pronotum: 6.5; tegmen: 38.5; hind femur: 19; antenna: 85; ovipositor: 15 mm.

Etymology: The new species is named after the type locality—Umboi Island; noun in apposition.

Figures

FIGURE 26. Trichophallus umboi sp. nov., holotype female from Umboi Island: A, habitus female; B, ovipositor; C–D, subgenital plate in ventral (C) and in oblique lateral view (D); E, abdominal apex in lateral view.Abbreviations: dp, basal, dorsal extension of subgenital plate; bl, basal lobe of ventral ovipositor valve.