Philmontoides disjunctus, 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 : 144

publication ID	https://doi.org/ 10.11646/zootaxa.5182.2.1
publication LSID	lsid:zoobank.org:pub:8920DE84-2BE6-4A68-A7F7-AC987F1F894E
DOI	https://doi.org/10.5281/zenodo.7053845
persistent identifier	https://treatment.plazi.org/id/DB181868-FFB3-FFE6-FF67-D2E72C24F6A6
treatment provided by	Plazi
scientific name	Philmontoides disjunctus
status	sp. nov.

Treatment

Philmontoides disjunctus sp. nov.

Figs. 9D View FIGURE 9 , 10G–H View FIGURE 10 , 11D View FIGURE 11 , 12D View FIGURE 12 , 14H–K View FIGURE 14

Holotype (male): Papua New Guinea: New Guinea SE, Tapini, elev. 1200 m (8°22’S, 146°59’E), 17.v.1961, leg. J.L. Gressitt —depository: Bernice B. Bishop Museum, Honolulu ( BPBM). GoogleMaps

Other specimens studied: same locality as holotype, 8–14.ix.1968, leg. Mena — 1 male ( BPBM) GoogleMaps .

Diagnosis. The new species is best diagnosed by the shape of the male titillators that have the widened apical area almost completely divided into two branches, which is unique within the genus. The male cerci of P. disjunctus sp. nov. resemble those in P. lobatus ( Naskrecki & Rentz, 2010) and P. globosus sp. nov. They differ from both in details of length, width, shape and curvature of the male cerci as illustrated in Figs 10E–J View FIGURE 10 . The dorsal, apical projection of the male cercus of P. disjunctus sp. nov. is stouter than in both other species and shorter than in P. lobatus .

Description. Habitus elongate with tegmen nearly reaching end of hind femur ( Fig. 9D View FIGURE 9 ). Pronotum 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) 5-6 / 6-9; (2) 5-6 / 1-2; (3) 8 / 8-12 (n = 2); hind knee lobes bispinose.

Male. Stridulatory file ( Fig. 12D View FIGURE 12 ) in about basal two thirds with large and spaced teeth, after a sinusoidal step, teeth abruptly narrowing and becoming denser and hardly perceptible toward end; total file length 1.35–1.45 mm with 26–29 distinct and ca 13–17 indistinct teeth at end; area with countable teeth 1.10–1.24 mm with 26–29 teeth; area with large teeth before step 0.85–1.00 mm with 15–18 teeth; area with largest teeth 0.66–0.69 mm with 12 teeth (n = 2). Tenth abdominal tergite strongly convex, centro-apical area elevated against baso-lateral area, hind margin prolonged into a pair of compressed, oblique projections, widening toward end and embrace an oval space that is open at end ( Fig. 11D View FIGURE 11 ). Cerci at base rounded, slightly conical and little curved mediad, at ventro-internal margin with a very narrow rim; before apical third, cercus divided into a dorsal and a ventral projection; dorsal projection compressed, with narrowing margins, at end rounded and provided with a small, curved spine; ventral projection wide, but little narrower than basal stem, with convex external and straight internal surface, at end triangularly widening, compressed with bulging dorsal and ventral margins, dorsal margin terminating into a small curved spine, ventral margin with obtuse end ( Figs 10G–H View FIGURE 10 ). Subgenital plate strongly, triangularly excised from base to almost mid-length, afterward with a fine carinula along midline; central disc at base slightly convex, afterward with slightly converging lateral margins; margins upcurved and at dorsal end curved laterad, forming in basal half a narrow concave, in apical half a wide convex rim; the plate terminates into a pair of narrow, about rounded projections that carry the styli at oblique ventro-apical end. Titillators with basal area long and narrow, running parallel to but not fused with each other, at base for a short distance curved sideward; at posterior end, titillators curved moderately sideward and become widened into flattened but little vaulted, in top view bean-shaped apical areas; nearly completely separate from that branch, but arising from it at very base is another flattened apical branch that is longer than the bean-shaped branch, about parallel sided with little widened end that carries a small, stiffened pad in apical area ( Figs 14H–K View FIGURE 14 ). There is also a pair of narrow, wavy lateral sclerites near bases of titillators running vertically to the titillator axis.

Female unknown.

Measurements (2 males).—Body w/wings: male 31.0–32.5; body w/o wings: male 26–27; pronotum: male 6.25–6.5; tegmen: male 20–22; hind femur: male 20.5–21.0; antenna: male 120 mm.

Etymology. The name of the new species refers to the unique shape of the male titillators that have the widened apical areas completely divided into two branches; from Latin disjunctus split, divided.