Hecaloidella knighti, 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 : 397-399

H. knighti Zhang & Webb sp. nov.

Figs. 1P , 7M–Q

Description. Body length (including tegmina), male: 5.3mm; female: 6.0mm.

Colour as in H. brunnifacialis .

Male genitalia similar to H. brunnifacialis . but aedeagus with shaft tapered to acute upturned apex with processes absent and gonopore arising two thirds distance from base to apex of shaft.

Female pregenital sternite with posterior margin acutely produced medially.

Etymology. This species is named in honour of Dr. William J. Knight, the second author’s mentor at the BMNH and organiser of the Project Wallace Expedition (see Material and methods).

Material examined. Holotype: ♂, Indonesia, Sulawesi Utara, Dumoga-Bone National Park , Fog. 13, Plot A, 230m, 11.vii.1985, RESL-Project Wallace, NHMUK 010591764 ( BMNH) . Paratypes: 1♂ 1♀, Indonesia, Sulawesi Utara, Dumoga-Bone National Park, ii.1985, RESL-Project Wallace ( BMNH) .

Other material. 1♀, Indonesia, Sulawesi Tengah, nr Morowali, Ranu Lakes , 7-10.iii.1980, at light, M.J.D. Bren- dell ( BMNH) .

Remarks. This species can be distinguished from other H. quadripicta group species by the aedeagus without processes.

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 7. Male genitalia and female pregenital sternite of H. quadripicta species group; A–G, H. brevis; A, aedeagus, lateral view; B, apex of aedeagus, lateral view; C, aedeagus, ventral view; D–E, connective, dorsal and lateral view; F, valve and subgenital plate, dorsal view; G, style; H–L, H. brunnifacialis; H, aedeagus and connective, lateral view; I, aedeagus, caudal view; J, style; K, connective, ventral view; L, female pregenital sternite; M–Q, H. knighti; M, aedeagus, ventral view; N, connective, ventral view; O, style; P, aedeagus and connective, lateral view; Q, female pregenital sternite.