Hecaloidella bimaculata, 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 : 386

H. bimaculata Zhang & Webb sp. nov.

Figs. 1A , 2A–K

Description. Body length (including tegmina), male: 4.8–5.3mm; female: 5.3mm.

Stramineous to sordid yellow. Vertex with a large brown spot anteriorly each side of midline. Face with a medial dark brown inverted Y-shaped mark; antennal pedicel dark brown. Forewings brownish hyaline; veins yellowish with brown marking restricted to a small spot at apex of claval veins.

Vertex relatively long, nearly twice as long medially than next to eyes.

Male genitalia with subgenital plate very broadly curved basally with very short digitate apex, with a few short fine setae dorsolaterally. Style apical process rostrate. Connective Y-shaped with short stem and relatively short sharply upturned caudal extension.Aedeagus relatively large, disassociated from connective, with stout ventral process; shaft moderately long, laterally compressed and tapered to acute apex without processes, gonopore apical.

Female pregenital sternite with posterior margin almost straight.

Material examined. Holotype: ♂, Brunei, Temburong District, ridge NE of Kuala Belalong , approx. 300m alt., x.1992, J.H. Martin, m. v. light trap, NHMUK 010591776 ( BMNH) . Paratypes: 1♂, Malaysia, Sarawak, Gu- nung Mulu National Park , 30-50m, elevation, 4°02′32.9″N, 114°48′46.7″E, 16-22.x.2006, J.R. Cryan & J.M. Urban ( INHS) ; 1♀, Malaysia, Sarawak, Gunung Mulu National Park , Site 10, February , Camp 1 Mulu, 160m, mixed dip- terocarp forest, Ac. -understorey, J.D. Holloway, Royal Geographical Society Mulu Expedition ( BMNH) .

Etymology. This species is named after the pair of large brown spots on the vertex.

Remarks. This species differs from other species of H. nitida group by its large head spots, longer vertex and in the male genitalia by its larger aedeagus and shorter caudal extension of the connective strongly upturned.

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 2. H. bimaculata; A–B, habitus, dorsal and lateral view; C, face, D, head and thorax, anterior view; E, male genital capsule, lateral view; F, style; G, valve, subgenital plates, styles and connective, dorsal view; H, aedeagus, lateral view; I aedeagus, caudal view; J, anal tube, lateral view; K, connective, lateral view.