Cranae ferwillemsei Storozhenko, 2020

Storozhenko, S. Yu., 2020, New species of the genera Cranae and Lucretilis (Orthoptera: Acrididae) from Indonesia with taxonomic notes on the tribe Cranaeini, Zoosystematica Rossica (China) 29 (2), pp. 267-277 : 271-275

Cranae ferwillemsei Storozhenko , sp. nov.

( Figs 9–13)

Holotype. Male , Indonesia, West Papua Prov., New Giunea I., env. of Manokwari Town , primary forest on hills near sea, 4–6.XI 2004, coll. A. Gorochov ( ZIN).

Description. Male (holotype). Body medium-sized for this genus; integument shiny ( Figs 9, 10). Head thick, rounded, as long as pronotum. Occiput and genae finely punctuated. Face rugose, in profile reclinate and straight. Frontal ridge distinct to median ocellus, sulcate, parallel-sized ( Fig. 11); vertex between eyes almost 1.8 times as wide as this ridge between antennae. Fastigium of vertex slightly marked off rest of vertex, more or less widely triangular from above, with truncated apex not reaching tip of 1st antennal segment, and without foveolae. Eyes ovoid-hemispherical; vertical diameter of eye 1.8 times as long as subocular furrow. Antennae filiform, 25-segmented, reaching basal third of hind femora; mid segments of antennae 4.8–5.0 times as long as width. Pronotum rugose, long, crossed by four transverse furrows; prozona 2.3 times as long as metazona; anteri- or margin of prozona broadly rounded; posterior margin of metazona almost straight; lateral carinae absent; median carina low. Lateral lobe of pronotum about as long as high. Prosternal process strong, vertical, laterally compressed, in frontal view slightly widened distally and with truncated apex. Mesosternal lobes wider than long, with inner margins convex; mesosternal interspace trapezoid; metasternal lobes fused. Tegmina elongated, 3.2 times as long as wide, not touching each other in a resting position, reaching posterior margin of fifth abdominal tergite, with rounded apex. Hind wings slightly shorter than tegmina. Hind femora moderately stout, 3.8 times as long as their maximal width; dorsomedian carina slightly crenulate; ventral genicular lobes truncate. Hind tibiae with five outer and seven inner dorsal spines; outer apical dorsal spine present. Hind tarsi slightly longer than half of hind tibiae; third segment (without claws) 1.1 times as long as first one; arolium wide and long, surpassing apex of claws. Tympanum large, oval. Tenth abdominal tergite angularly excised and with a pair of well-separated small furculae on posterior margin. Supra-anal plate subsquare, as long as its width near base, with short transverse ridges near middle and shallow longitudinal depression in basal half of plate as well as with smooth apex. Cerci slender, 3.1 times as long as their width near base, surpassing tip of subgenital plate, with pointed apex. Subgenital plate subconical, short and with obtuse apex.

Male genitalia ( Figs 12, 13). Epiphallus not divided into two symmetric halves; ancorae hooklike and almost completely fused with anterior projections; posterior projections narrowly triangular; bridge narrow, with anterior and posterior margins nearly straight; outer lophi of epiphallus large, projecting ecto-dorsally and separated distinctly from posterior projections; inner lophi also projecting ecto-dorsally; oval sclerites large. Ectophallic membrane soft, with weakly sclerotised plate. Cingulum sclerotised, consisting of broad apodemes, zygoma, and rami; zygoma apically with deep excision, not covering arch of cingulum; valves of cingulum divided, apically lamellate. Apical valves of penis tapering apically, with apex tooth-shaped and slightly outcurved, considerable longer than cingular valves; basal and apical penis valves disconnected, only touch each other, flexure absent.

Body (after alcohol preservation) brown with blackish marks ( Figs 9, 10). Dorsal side of head brown with two lateral light brown stripes; fastigium of vertex light brown; genae, face, clypeus and labrum brown; mandible black with brown base; antennae black except for light brown scapus and pedicel. Pronotum brown; lateral lobes of pronotum with blackish brown spot in central part; prosternal process and sternal plate light brown. Tegmina dark brown with wide light brown stripe along median part of each tegmen. Fore and mid legs greenish brown. Hind femur greenish brown, without any dark marks; dorsal genicular lobes shining brown; ventral genicular lobes light brown. Hind tibia greenish brown; dorsal spines with black apices. Tarsi light brown; claws with black apex. Abdomen dorsally light brown; tenth tergite light brown with dark brown furculae; supra-anal plate brown with a pair of transversal black stripes in middle part; cerci brown. Sternites and subgenital plate light brown.

Female unknown.

Measurements (length in mm). Male body: 22.4; antenna: 16.2; pronotum: 4.0; tegmen: 8.1; hind femur: 12.0; hind tibia: 8.9.

Distribution. Indonesia: New Guinea Island (West Papua Province).

Comparison. The new species is similar to Cranae manokwari F. Willemse, 1977 from the same province of Indonesia in the apical valves of penis tapering apically and with tooth-shaped and slightly outcurved apex (see F. Willemse, 1977a: figs. 34, 35), but it differs from the latter in the colour of head, pronotum and lower ventral genicular lobes (in C. manokwari , the head and pronotum are black with yellow longitudinal stripes, and both dorsal and ventral genicular lobes are black).

Etymology. This species is named in memory of the Dutch orthopterist Fer Willemse (1927– 2009).