Philmontis extensus, 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 : 114

Philmontis extensus sp. nov.

Figs. 6E , 8A–C

Holotype (female): Papua New Guinea: Kiunga , Fly River, (6°7’S, 141°18’E), 26–30.vii.1957, leg. W.W. Brandt — depository: Bernice B. Bishop Museum, Honolulu ( BPBM).

Diagnosis. The new species is similar to P. forcipatus ( Willemse, 1966) . It differs by the shape of the female subgenital plate that has the central area behind the narrowed very basal area not constricted, instead, the central area of the plate is regularly curved into the widened apical lobes, the ventral surface of the plate is regularly vaulted, not provided with transverse, angular folds as in P. forcipatus ; and the dorso-lateral expansions of the plate are of different shape. Moreover, the ovipositor has the substraight basal area prolonged and is longer than in other species of the genus.

Description. Rather large for the genus with wings surpassing abdomen, reaching about tip of hind femur and reaching or surpassing middle of ovipositor in females ( Fig. 6E ). Face of uniform color, antennal scrobae partly black. Pronotum elongate; disc with anterior margin faintly concave, posterior margin broadly rounded; lateral lobes long and narrow, its deepest point in females about at beginning of apical third; auditory swelling distinct but without humeral sinus. Prosternal spines short; mesosternal lobes obtuse; metasternal lobes rounded; femora with the following number of spines on ventral margins: (1) 6 / 6-8; (2) 5 / 1-2; (3) 7-10 / 0 (n = 1); hind knee lobes unispinose.

Male unknown.

Female. Subgenital plate with dorsal expansions in subbasal area ascending on both sides of ovipositor; main area of the plate in ventral view nearly circular, little raised toward mid-line; apical area divided from posterior margin into a pair of curved, semi-oval lobes with surface little concave on inner side; interspace between these lobes widening proximad and occupying nearly 40% of the length of the plate; at very base of the plate on both sides with an up-bent dorsal expansion with swollen ventral and little flattened and conical dorsal half ( Figs 8A–C ). (Remark: in the single specimen at hand, at left body side, the base of the left dorsal ovipositor valve is distorted and bent outward). Ovipositor rather long, in basal area little, afterward markedly upcurved, with regularly approaching margins toward acute tip ( Fig. 6E ).

Measurements (1 female).—Body w/wings: 35; body w/o wings: 28; pronotum: 7.5; tegmen: 26; hind femur: 19; antenna: 60; ovipositor: 18 mm.

Etymology. Named for the prolonged female ovipositor that is markedly longer than in other species of the genus; from Latin extensus , extensa prolonged.

Figures

FIGURE 6. Female habitus in lateral view.—A, Philmontis nigrofasciatus Willemse, 1966 paratype; B, P. murmur sp. nov.; C, P. angustus sp. nov. [Mt Wilhelm]; D, P. forcipatus (Willemse, 1966); E, P. extensus sp. nov. [Fly River]; F, P. banz sp. nov. [South of Banz]; G, P. spinosus sp. nov. [Mt Missim]; H, P. profusus sp. nov. [Mt Kaindi]; I, P. angulatus sp. nov. [Garaina]; J, P. flexus sp. nov. [Schraderberg]; K–L, P. pandus sp. nov. [Dowalo]; M, P. pumilus sp. nov. [Upper Biaru|.—Scale bars 10 mm.

FIGURE 8. Female subgenital plate in ventral (A, D, F, J, L), apical (B–C), ventro-apical (H) and lateral view (E, G, I, K, M).—A–C, Philmontis extensus sp. nov. [Fly River]; D–E, P. forcipatus Willemse, 1962 [Mt Otto]; F–G, P. spinosus sp. nov. [Bulldog Road]; H–I, P. profusus sp. nov. [Mt Kaindi]; J–K, P. pandus sp. nov. [Mt Kaindi]; L–M, P. pumilus sp. nov. [Upper Biaru].—Abbreviations: b basolateral projection of subgenital plate, ov very base of ventral ovipositor valve, artificially recurved in this specimen. The arrows in H–I mark the recurved proximal projections of the subgenital plate.—Scale bars 1 mm.