Singillatus gracilius, Nielson, 2015

Nielson, M. W., 2015, A revision of the tribe Coelidiini of the Oriental, Palearctic and Australian biogeographical regions (Hemiptera: Cicadellidae: Coelidiinae), Insecta Mundi 2015 (410), pp. 1-202 : 53

Singillatus gracilius , sp. nov.

( Plate 5A , Fig. 259-265 )

Description. Length. Male 7.80 - 8.20 mm., female unknown.

External morphology. Moderately large, slender species. General color black with small yellow spots on forewings, pronotum yellow with yellow bullae; crown yellow with brown markings; eyes dark brown; face yellow; clypeus with longitudinal orange stripe on inner lateral margins; clypellus orange; head distinctly narrower than pronotum, anterior margin broadly rounded; crown short, narrower than width of eyes, slightly produced anteriorly, lateral margins convergent basally; eyes large, elongate ovoid; clypeus long, narrow, lateral margins broadly convex; clypellus short, about 1/3 as long as clypeus, narrow, inflated longitudinally in middle, apex inflated laterally.

Male genitalia. Pygofer in lateral view narrowly triangulate, small lobe apically, broad digitate lobe on caudoventral margin, glabrous ( Fig. 259 ); aedeagus long, tubular, very narrow, with moderately long spine near middle of shaft, short row of teeth near apex in lateral view; gonopore near base of spine ( Fig. 260, 261 ); style with moderately long, robust apophysis ( Fig. 262, 263 ); dorsal connective short, slender ( Fig. 261 ); connective small, anterior arms slightly compressed, medial ridge incomplete, stem short, semiglobular ( Fig. 264 ); subgenital plate long, narrow, few microsetae apically ( Fig. 265 ).

Material examined. Holotype male. MALAYSIA: S. Sumatra, Lampung prov. , Bukit Barisan Selatan S. P., 5 o 4' S. 104 o 4' E., 600 m., 5km. SW Liwa, 7-17.ii.2000, D. Hauck, leg ( MMBC) . Paratype. 1 male, same data as holotype, except J. Bezed k, leg. ( MLBM).

Etymology. The name of this species is descriptive for the slender aedeagal shaft and subgenital plate. Remarks. From S. ventrosolus to which it is similar, S. gracilius can be separated by the narrower aedeagal shaft, process arising near the middle of the shaft and by presence of caudodorsal and caudoventral lobes on the pygofer.

Figures

PLATE 5. A-I. Dorsal habitus. (A) Singillatus gracilis, sp. nov.; (B) Singillatus ventrospinatus, sp. nov.; (C) Taharana caverna, sp. nov.; (D) Taharana sublamina, sp. nov.; (E) Taharana abstrusa, sp. nov.; (F) Taharana biunca, sp. nov.; (G) Taharana lacertosa, sp. nov.; (H) Taharana biavicula, sp. nov.; (I) Taharana brevicutata, sp. nov.

Figures 259-265. Genitalia,Singillatus gracilius, sp. nov. 259) Male pygofer, lateral view. 260) Aedeagus, lateral view. 261) Aedeagus and dorsal connective, dorsal view. 262) Style, lateral view. 263) Style, dorsal view. 264) Connective, caudal view. 265) Subgenital plate, ventral view.