Roxasella quadripicta, Lu & Dietrich & Webb & Zhang, 2025

Lu, Lin, Dietrich, Christopher H., Webb, M. D. & Zhang, Yalin, 2025, Revision of the Oriental Roxasella leafopper group: phylogeny, morphological evolution, biogeography, and description of 14 new species, Zoological Journal of the Linnean Society 204 (3) : -

Roxasella quadripicta sp.nov.

( Fig. 15A–N) (URN:LSID:ZOOBANK.ORG:ACT: 1B8CA5C4-74E5-4C90-9113-C9E829BDBF8D)

Diagnosis: Crown with two pairs of black spots at anterior margin. Style apex not bilobed, with lateroapical margin convex. Pygofer with caudodorsal margin acutely angulate. Aedeagus with two pairs of apical processes extended basolaterad, approximately equal in length and extended to midlength of shaf. Small sclerite articulated between connective and aedeagus. Fore tibia with dorsal setal arrangement of rows AD and PD 2 + 4. Fore femur IC with about 14 setae, AV with six stout setae.

Description: Length (including tegmen): male 7.3 mm.

Coloration: Body greenish yellow. Crown with two pairs of black spots at anterior margin, one submedial and one sublateral next to ocelli, with pair of transverse submedial orange bars more posterad. Face stramineous with narrow black band at dorsal margin. Pronotum yellow anteriorly, greenish brown posteriorly. Forewing with three fuscous spots along commissural margin of clavus and crossveins of corium marked with fuscous.

Crown parabolic, longer medially than next to eyes. Fore tibia with dorsal setal arrangement of rows AD and PD 2 + 4. Fore femur IC with about 14 setae, AV with six stout setae.

Male genitalia: Pygofer with caudodorsal margin acutely angulate. Style apophysis weakly expanded, apex with inner margin obtusely angulate and lateral margin acute, pre-apical lobe very weakly developed. Connective moderately short, stem shorter than arms. Aedeagus with dorsal apodeme widened dorsad and truncate in posterior view, shaf moderately wide and gradually curved dorsad in lateral view, narrow basally and gradually expanded distally in posterior view, with two pairs of apical processes extended basolaterad, approximately equal in length and extended to midlength of shaf, one pair curved strongly anterad in lateral view, second pair only slightly curved and posterad of first pair, with apex slightly emarginate; gonopore apical. Small sclerite (paraphysis) articulated between connective and base of aedeagus.

Material examined: Holotype: ♂, Malaysia, Sarawak, Gunung Mulu National Park , near headquarters (04º04. 25 ′ N, 114º81.38 ′ E), 30 June–28 July 2009, coll. S. Krishnankuty, mercury vapour lights ( INHS).

Etymology: Te specific epithet, a Latinized adjective, refers to the four black spots on the anterior margin of the crown.

Remarks: Tis species is similar to R. arcuata in form and coloration but differs in having the two pairs of aedeagal processes similar in size, the connective much shorter and broader, and the crown broader and less strongly produced.