Dwightla lancea, Xu & Zhang, 2019

Xu, Deliang & Zhang, Yalin, 2019, Review of leafhopper genus Dwightla McKamey (Hemiptera: Cicadellidae Deltocephalinae: Selenocephalini) with description of a new species from Central African Republic, Zootaxa 4664 (4), pp. 581-586 : 583-586

publication ID	https://doi.org/ 10.11646/zootaxa.4664.4.10
publication LSID	lsid:zoobank.org:pub:2105355B-F8F1-4FEC-A5AE-9CE29058F1CA
persistent identifier	https://treatment.plazi.org/id/03AE878A-CB6E-8753-A2A9-6277FBCF82FB
treatment provided by	Plazi
scientific name	Dwightla lancea
status	sp. nov.

Treatment

Dwightla lancea View in CoL sp. nov.

( Figs. 1 View FIGURE 1 , 2 View FIGURE 2 )

Description. Body length (including tegmina), male: 10.5–11.0 mm.

Body color dark brown. Crown ( Fig. 1 View FIGURE 1 , A, B, D) with eight more or less black spots. Anterior margin of pronotum ( Fig. 1 View FIGURE 1 , A, B) with ten black spots in transverse row. Face light brown ( Fig. 1 View FIGURE 1 , C), with a submarginal brown band on the upper part of the frontoclypeus; gena dark brown below eyes. Forewing ( Fig. 1 View FIGURE 1 , A, E) veins dark brown with callosities; with brown patches on tip of claval suture; with brown patches along apex of subcostal vein; four apical cells brownish.

Head ( Fig. 1 View FIGURE 1 , A, B) somewhat wider than pronotum. Crown ( Fig. 1 View FIGURE 1 , B) flat and broad; anterior and posterior margin nearly parallel; median length slightly longer than next to eyes; coronal suture ( Fig. 1 View FIGURE 1 , B, D) distinct. Ocelli ( Fig. 1 View FIGURE 1 , D) situated on middle keel of anterior margin of head; approximately twice own diameter distant from adjacent eyes; lateral frontal sutures ( Fig. 1 View FIGURE 1 , C) not reaching corresponding ocelli. Face ( Fig. 1 View FIGURE 1 , C) nearly rectangular; frontoclypeus triangular, wide proximally and narrow apically, lateral view slightly swollen; clypeal suture present and curved; anteclypeus with apex slightly broader than base, lateral margin expanded; gena broad with disc concave, sparse wrinkles, the distal margin with carina; lora large, longer than wide, wider than anteclypeus near base; antennae short, conspicuously shorter than half of body length, antennae pits at upper corners of eyes in facial view. Pronotum ( Fig. 1 View FIGURE 1 , B) longer than exposed part of scutellum, with anterior margin arched; lateral margin moderately long, carinate; hind margin slightly concave, with dense spots. Scutellum ( Fig. 1 View FIGURE 1 , A, B) triangular, transverse depression obscure. Forewing ( Fig. 1 View FIGURE 1 , A, E) elongate, surpassing apex of abdomen; inner anteapical cell open; appendix broad and extending to the wing apex. Protibia rounded dorsally. Hind femur ( Fig. 1 View FIGURE 1 , F) with apical setal formula 2+2+1.

Male pygofer side ( Fig. 1 View FIGURE 1 , G) elongate, sharply constricted apically without dorsoposterior process, with several fine setae. Valve ( Fig. 1 View FIGURE 1 , H; Fig. 2 View FIGURE 2 , I) triangular. Subgenital plate ( Fig. 1 View FIGURE 1 , H; Fig. 2 View FIGURE 2 , I) triangular; broad basally and tapering distally; lateral margin with numerous scattered macrosetae irregularly. Style ( Fig. 1 View FIGURE 1 , H; Fig. 2 View FIGURE 2 , J) ventral margin with coarse texture; without lateral lobe; with a small tooth-like process subapically; apical process digitate and elongate. Connective ( Fig. 1 View FIGURE 1 , H; Fig. 2 View FIGURE 2 , K) short and H-shaped; articulated with aedeagus; stem robust and arms slender; stem shorter than anterior arms; medially bifurcate apically. Aedeagal shaft ( Fig. 2 View FIGURE 2 , L) lanciform, curved dorsad ( Fig. 2 View FIGURE 2 , N) with a pair of elongate, lateroapical processes directed ventrally; process ( Fig. 2 View FIGURE 2 , M) expanded in middle and abruptly bent laterad beyond mid-length; atrium developed, dorsoatrium vase-shaped in posterior view; dorsal atrium slightly shorter than the length of shaft laterally; gonopore ( Fig. 2 View FIGURE 2 , L, M) large, apical on ventral surface.

,; Female: unknown.

Material examined. Holotype: ♂, Boukoko-RCA, 10–II–1970, coll. Michel Boulard ( MNHN).

Etymology. The new species epithet derives from the Latin noun lancea (spear), referring to the lanciform aedeagal shaft.

Remarks. This species D. lancea is similar to D. medleri Lu & Zhang, 2018 in pygofer structure, but it can be distinguished from the latter by the dark brown body color (light brown in D. medleri ); style with a small tooth-like process subapically (without subapical process in D. medleri ); connective medially dichotomous apically (both sides apically bifurcate in D. medleri ); aedeagal shaft lanciform (falcate in D. medleri ), with a pair of apical processes (subapical processes in D. medleri ), expanded in middle (not expanded medially in D. medleri ) and only processes slightly divergent from shaft in caudal view (strongly divergent in D. medleri ).