Philmontoides geminus, Ingrisch, 2022

Ingrisch, Sigfrid, 2022, Revision of the genus Philmontis Willemse, 1966 and description of a new genus Philmontoides gen. nov. from New Guinea (Orthoptera: Tettigoniidae; Conocephalinae), Zootaxa 5182 (2), pp. 101-151 : 147

Philmontoides geminus sp. nov.

Figs. 16A , 17G–H

Holotype (female): Papua New Guinea: West Sepik, Feramin , elev. 150– 120 m (5°12’S, 141°44’E), 7–14.vi.1959, leg. W.W. Brand — 1 female —depository: Bernice B. Bishop Museum, Honolulu ( BPBM). The type is unique.

Diagnosis. The new species is unique for the shape of the female subgenital plate that appears as though it has doubled plates in basal half that are fused along internal margin with the main plate but otherwise distinctly up-lifted with a step to the main plate, on anterior side the outer plate is bent dorsad and continues in the cleft between the plate and the basal, lateral projections.

Description. Pronotum elongate, disc with anterior margin faintly concave, posterior margin broadly rounded. Prosternal spines long; mesosternal lobes obtuse; metasternal lobes rounded with an angle or fold. Femora with the following number of spines on ventral margins: (1) 6 / 5-8; (2) 4-6 / 2; (3) 10-12 / 12-15 (n = 1); hind knee lobes bispinose.

Male unknown.

Female. Subgenital plate with large and elongate basal, lateral extensions with obtuse end connected by a stout membranous bulge at very basal area of plate; main part of subgenital plate with upcurved and converging lateral margins; in apical area dividing into a pair of triangular lobes curved dorsad; surface of plate with a medial carina from anterior area behind transverse, membranous, basal bulge to base of triangular apical excision; in about basal half of plate, on both sides of medial carina with a secondary outer plate elevated from surface of the basal plate and connected to it along internal and apical margins; along anterior margins, the plates are bent vertically dorsad thus forming deep clefts between the subgenital plate and the basal lateral extensions ( Figs 17G–H ).

Discussion. P. geminus sp. nov. is unique for the shape of the female subgenital plate that carries in basal area a structure that appears as a pair of duplicate plates, which have its basal areas angularly bent dorsad and which are separated by the medial carina. The insertion of the elongate basal, lateral extensions, separated by a membranous zone in middle, resembles the situation in P. lobatus (N. & R., 2010). The new species differs by the unique shape of the female subgenital plate from this and other species of the genus.

Measurements (1 female).—Body w/wings: 39; body w/o wings: 28; pronotum: 8; tegmen: 28; hind femur: 23.5; antenna: 110; ovipositor: 13.5 mm.

Etymology. The new species is named for the appearing doubled surface of the female subgenital plate; from Latin geminus double, doubled.

Figures

FIGURE 16. Female habitus in lateral view (A–G, I); female subgenital plate in lateral (H–J), ventral (K), and oblique lateral view (L).—A, Philmontoides geminus sp. nov. [Feramin]; B, P. affinis (Willemse, 1966); C, P. striatus sp. nov. [Lordberg]; D, P. commodus sp. nov. [Okapa]; E, P. hageni (Dohrn, 1905) [Wanuma]; F, holotype of Salomona vittata Kuthy, 1910, inset shows subgenital plate of same specimen; G–H, P. wau sp. nov. [McAdam Peak]; I–L, P. globosus sp. nov. [Nabire].—Abbreviation: b basal extension of subgenital plate.—Scale bars 10 mm (A–H), 1 mm (H–L and inset in G).

FIGURE 17. Female subgenital plate in ventral (A, C, E, G, K, I, O, M, P), lateral (B, D, F, H, J, L), and oblique apico-ventral (N) view.—A–B, Philmontoides hageni (Dohrn, 1905); C–F, P. lobatus (Naskrecki & Rentz, 2010) [C–D, Star Range 25 m from fully hardened specimen; E–F, Star Range 1500 m from freshly molded, soft specimen]; G–H, P. geminus sp. nov. [Feramin]; I–J, P. striatus sp. nov. [Etappenberg: I, well preserved; J, shrunken]; K–L, P. affinis (Willemse, 1966); M–N, P. commodus sp. nov. [M Mendi, N Mt Karimui]; O–P, P. wau sp. nov. [O, shrunken; P, well preserved].—Scale bars 1 mm. Abbreviations: b basal extension, c cover plate, m squeezed intersegmental membrane, p main plate.