Hecaloidella brunifasciata, 2021

Xu, Deliang, Webb, Michael D., Shang, Suqin & Zhang, Yalin, 2021, Review of the Pacific leafhopper genus Hecaloidella (Hemiptera: Cicadellidae Deltocephalinae: Selenocephalini) with description of sixteen new species, Zootaxa 4948 (3), pp. 381-403 : 400-402

H. brunifasciata Zhang & Webb sp. nov.

Figs. 1T , 9A–L

Description. Body length (including tegmina), male: 8.9–9.0mm.

Head and thorax stramineous; face dark brown dorsally from above antennae to marginal rim. Forewings brownish hyaline; veins darker brown, concolorous with wing in clavus, a small dark brown spot on apex of clavus and on apex of claval veins and veins of 4 th and fifth apical cells.

Head very slightly wider than pronotum, anteriorly foliaceous with anterior margin rim-like with a pair of marginal carina; vertex slightly transversely sulcate between anterior corners of eyes, finely obliquely striate; ocelli just above marginal rim approximate twice diameter from corresponding eye; face nearly flat in profile, dorsally slightly concave with fine transverse striations extending laterally onto ocellocular area and then ventrally to antennal ledge, remaining ventral part of face shagreen; antennae short, arising approximately two thirds distance to upper corner of eyes in facial view. Pronotum with sides short, carinate; finely transversely striate basally and centrally. Forewing with three subapical cells, inner open; outer subapical cell slightly narrowed basally. Fore femur with few basal ventral setae. Fore tibia with dorsal setal formula 1+4. Hind femur with apical setal formula 2+2+1.

Male genitalia with pygofer tapered to conically rounded apex with several macrosetae distally, without processes. Segment X extended ventrally. Subgenital plates wide basally, there-after strongly incurved to mid-length with apex digitate, without macrosetae. Style with apical process hook-like, lateral lobe large. Connective with apices of arms fused, stem long, extended caudally into a long distal process, upturned apically. Aedeagus situated dorsad of connective and connected to it by membrane; shaft recurved apically and extended into a long ventrally directed process, tapered to acute apex; gonopore at base of process; basal apodeme long, expanded laterally.

Material examined. Holotype: ♂, Brunei, Temburong District, ridge NE of Kuala Belalong , approx. 300m alt., xi.1992, J.H. Martin, m. v. light trap, NHMUK 010591765 ( BMNH) . Paratype: 1♂, same data as holotype ( BMNH) .

Etymology. This species is named after the brown transverse band dorsally on the face.

Remarks. This species superficially resembles other species of Hecaloidella but is only tentatively included in the genus as the anterior margin of the vertex is more evenly rounded in dorsal view, it lacks the distinctly convex face in profile ( Fig. 9B ); the antennae arise slightly higher on the face ( Fig. 9C ) and the male segment X is extended ventrally ( Figs. 9F–G ). It is also significantly larger than other species of the genus.

Figures

FIGURE 1. Habitus images of Hecaloidella species; A, H. bimaculata (holotype); B, H. caudospina (holotype); C, H. nitida (holotype); D, H. nudapenis (holotype); E–G, H. pacifica (paratypes and immature); H, H. borneoensis (holotype); I, H. brevipenis (holotype); J, H. brevispina (holotype); K, H. longipenis (holotype); L, H. quadrispina (holotype); M, H. spinosa (holotype); N, H. brevis (holotype); O, H. brunnifacialis (topotype); P, H. knighti (holotype); Q, H. quadripicta (paratype); R, H. sandakanensis (holotype); S, H. singaporensis (paratype); T, H. brunifasciata (holotype).

FIGURE 9. H. brunifasciata; A–B, habitus, dorsal and lateral view; C, face; D, head and thorax, anterior view; E, male pygofer and anal tube, lateral view; F–G, male Xth segment, lateral and caudal view; H, style; I, connective, dorsal view; J, aedeagus, caudal view; K, valve and subgenital plates, dorsal view; L, aedeagus and connective, lateral view.