Monseremus appendiculatus, 2018

Ingrisch, Sigfrid, 2018, New taxa and records of Gryllacrididae (Orthoptera, Stenopelmatoidea) from South East Asia and New Guinea with a key to the genera, Zootaxa 4510 (1), pp. 1-278 : 222-225

Monseremus appendiculatus sp. nov.

Figs. 78 E–G, 79H–L

Material examined. Holotype (female): East Malaysia: Sabah, Mt. Kinabalu, Poring , elev. 500–700 m (6°5'N, 116°33'E), 24.x.1996, leg. A. Floren (tree nr. 72)— 1 female (holotype) (Bonn ZFMK).

Other specimens studied: Mt. Kinabalu, Sayap, Sungai Wariu, elev. 900 m, 23.iii.1994, leg. Hoffmann— 1 female (paratype) (Bonn ZFMK).

Diagnosis. The new species resembles in general habitus species of the genus Neanias . It is unique for the modifications of the females seventh abdominal sternite that is provided with a pair of pits in subbasal area and terminates in a T-shaped prolongation, combined with a strong modification of the female subgenital plate that is provided with a pair of curved, horn-shaped appendages from anterior margin ( Figs. 79 I–K).

Description. Head: Face not particularly large; in frontal view roughly oval; forehead nearly smooth; fastigium verticis distinctly wider than scapus; medium and lateral ocelli small, little distinct ( Fig. 79H ). Abdominal tergites two and three each with two little distinct rows of minute stridulatory pegs (4, 11; 15, 6; n=1; Fig. 79L ).

Wings absent ( Figs. 78 E–G).

Legs: Fore coxa with a rather long spine at fore margin; fore and mid femora unarmed; fore and mid tibiae with four pairs of large ventral spines and one pair of smaller ventral spurs; hind femur with 5–6 external and 8–10 internal spines on ventral margins, little increasing in size towards posterior end; hind tibia with spaced spines on both dorsal margins increasing in size from base to end; ventral margins with one pre-apical spine each; with 3 apical spurs on both sides.

Coloration. General color medium to dark brown, dorsal side darker than ventral side; with little distinct darker ornaments on hind femur. Face yellowish brown.

Male unknown.

Female. Seventh abdominal sternite with a strong convex apical extension having a fallen-T shaped elevation in middle and is grooved on both sides; main part with two pits in about half length of sternite, one at each side. Subgenital plate basic shape roughly semi-circular with rim strongly swollen, basal margin straight in middle but on both sides with a large swollen extension bent ventrad and later craniad, tip broadly rounded ( Figs. 79 I–K). Base of ovipositor laterally at very base with a conical protuberance. Ovipositor straight, longer than hind femur; tip narrowly obtuse ( Fig. 78 F–G).

Measurements (2 females).—body w/o wings: 23–24; pronotum: 5; tegmen: 0; hind femur: 14; antenna: 150; ovipositor: 17.0– 17.5 mm.

Etymology. Named for the appendage of the female subgenital plate; from Latin appendicula.

Figures

FIGURE 78. A–B. Neanias squamatus Brunner, 1888 female type (A), male (B); C–D, Neanias virens sp. nov. female holotype; E–G, Monseremus appendiculatus sp. nov. female holotype (E–F) and paratype (G); H–L, Minigryllacris perpusilla sp. nov. female holotype (H–K) and paratype (L).—Habitus lateral view (A, B, D, F–G, I) with wings enlarged (inset in B), habitus dorsal view (C, E, H), stridulatory pegs on second and third abdominal tergites, front is left (J), female subgenital plate (K), ovipositor (L). Scales 10 mm.

FIGURE 79. A–D, Neanias squamatus Brunner, 1888 female type (A–B) and male allotype det. Karny (C–D); E–G, Neanias virens sp. nov. holotype; H–L, Monseremus appendiculatus sp. nov. holotype (H–J, L), and paratype (K); M–N, Minigryllacris perpusilla sp. nov. female holotype.—Face (A, C, E, H, N), female subgenital plate with base of ovipositor (B), male abdominal apex in ventral view (D), female end of abdomen with seventh sternite, subgenital plate and base of ovipositor in about ventral (F, J, K) and in lateral view (G, I); stridulatory pegs on second and third abdominal tergites, front is right (L), anterior part of body with spread tegmen (M), the stippled line indicates the course of the anterior margin if it was not fold to the underside.