Chiltana acarinata, Song, Zhi-Shun, Khatri, Imran & Liang, Ai-Ping, 2019

Song, Zhi-Shun, Khatri, Imran & Liang, Ai-Ping, 2019, Redescription and redefinition of the genus Chiltana Shakila-Mushtaq & Akbar, 1995 (Hemiptera, Fulgoromorpha, Dictyopharidae, Dictyopharini), with description of a new species from Pakistan, ZooKeys 838, pp. 9-20 : 9

Chiltana acarinata sp. n. Figures 1, 2, 3, 4, 5

Type material examined.

Holotype ♂, Pakistan: Hazarganji, Chiltan National Park, 20 km SW Quetta, 3-6.vii.1989, W.J. Pulawski & W.A. Khan (CAS). Paratype, 1 ♂, Pakistan: same as holotype (CAS)

Description.

Body length (from apex of head to tip of forewings): 11.5-11.7 mm; head length (from apex of head to base of eyes): 1.2 mm; head width (including eyes): 1.5 mm; forewing length: 9.6-9.7 mm.

Coloration. General color brownish ochraceous marked with ivory white, pale green and purplish red on head and thorax, and dark brown on abdomen in dorsal view (Fig. 1). Head excluding eyes ivory white, vertex ochraceous basally and yellowish green apically (Fig. 2A), frons yellowish green, areas along intermediate carinae purplish red (Fig. 2C). Compound eyes fuscous with posterior margin ochraceous red and ivory white, ocelli purplish red (Fig. 2B). Clypeus pale ochraceous basally and apically, and dark brown medially, with a pair of small black spots on anteclypeus (Fig. 2C). Pronotum entirely ivory white. Mesonotum purplish red to ochraceous brown, areas of median and lateral carinae and lateral marginal areas flavescent or greenish (Fig. 2A). Forewings membrane hyaline, veins ochraceous, pterostigmal area and a large sublunate streak on distal fourth dull ochraceous (Fig. 2D). Thorax yellowish ochraceous ventrolaterally with dark brown patches adjacent to base of fore coxae. Legs pale to dark brown, with numerous black small spots (Fig. 3 A–D). Abdomen dorsally ochraceous to dark brown, with dark brown or pale ochraceous stripes of various sizes and shape, ventrally more or less uniformly yellowish ochraceous; male and female terminalia brown.

Structure. Head (Fig. 2 A–C) very short, cephalic process absent. Vertex (Fig. 2A) wider than length, with ratio of length at midline to width between eyes 0.8:1. Frons with basal margin of frons projecting anteriad to apex of vertex, distinctly visible in dorsal view (Fig. 2A); in ventral view, frons with ratio of length at midline to maximum width 2.0:1; median and intermediate carinae absent (Fig. 2C). Forewings (Fig. 2D) hyaline, ratio of length to width about 3.2:1. Legs (Fig. 3 A–D) moderately long; fore femora (Fig. 3A) strongly flattened and dilated, with about 10 various sized spines on ventral margin; middle femora (Fig. 3C) flattened and dilated, with about six variously sized spines on ventral margin; fore and middle tarsomeres I and II (Fig. 3B) with several acutellae; hind tibiae (Fig. 3D) with four lateral spines and eight apical teeth; hind tarsomeres I and II with about 14 apical teeth, respectively.

Male genitalia. Pygofer, in lateral view (Fig. 4B), with dorsoposterior margin forming a small and broad lobe; in ventral view (Fig. 4D) a little longer than in dorsal view (Fig. 4A) with ratio of ventral to dorsal width about 1.3:1. Gonostyles (Fig. 4 B–E) elongate, relatively narrow in basal half, dorsal apical process large and broad, directed dorsad (Fig. 4E). Aedeagus (Fig. 5 A–C) large and strongly inflated, endosomal processes elongate and robust, extended from phallobase, curved dorsad and then ventrad, apex sclerotized, elongate and acute (Fig. 5B). Phallobase with three pairs of inflated membranous lobes: a pair of large and stout dorsal lobes, directed dorsad, with a large and stout spine on apex of each lobe (Fig. 5A, B, D); a pair of large, strongly inflated, rounded ventral lobes, directed laterad, covered with numerous minute superficial spines (Fig. 5 B–D); and a pair of elongate thumb-like ventral lobes extended from dorsal side of rounded ventral lobes, their apices gradually convergent and tapering dorsad, muricate apically (Fig. 5 B–D). Segment X, in dorsal view (Fig. 5A), oval and broadest medially, with ratio of length to maximum width 1.1:1; in lateral view (Fig. 5B), short and robust, with ventral margin gradually widening from base to apex; anal style large, beyond apical ventral margin of segment X.

Etymology.

The specific epithet is borrowed from New Latin acarinatus, referring to the carinae on the frons and mesonotum being absent.

Distribution.

So far only known from Chiltan, Balochistan, Pakistan.

Remarks.

The new species may be distinguished from the type species of Chiltana , C. baluchi , by the different male genitalia.