Riseveinus tenuispinus, Wang & Dietrich & Zhang, 2018

Wang, Yang, Dietrich, Christopher H. & Zhang, Yalin, 2018, Four new species of the leafhopper genus Riseveinus Li (Hemiptera: Cicadellidae: Evacanthinae) from China and Thailand, Zootaxa 4508 (2), pp. 259-266 : 261-266

publication ID	https://doi.org/ 10.11646/zootaxa.4508.2.8
publication LSID	lsid:zoobank.org:pub:3375CF8C-7952-4CF5-8E39-09DE2197119D
DOI	https://doi.org/10.5281/zenodo.5957454
persistent identifier	https://treatment.plazi.org/id/9A1987B1-F20F-243D-D3BC-5A4CB1E6FD2E
treatment provided by	Plazi
scientific name	Riseveinus tenuispinus
status	sp. nov.

Treatment

Riseveinus tenuispinus View in CoL sp. nov.

( Figs 27–35 View FIGURES 27–35 )

Description. Body length (incl. forewing): ♂, 7.9 mm; Head width (incl. eyes): ♂, 1.5 mm; head length: ♂, 1.6 mm. Crown ( Fig. 29 View FIGURES 27–35 ) slightly shorter than length of pronotum and scutellum together.

Aedeagal shaft short, swollen at base then gradually narrowing towards apex in lateral view ( Fig. 34 View FIGURES 27–35 ), with pair of apical processes ( Fig. 33 View FIGURES 27–35 ); apodeme bilobed with moderately long dorsolateral extensions ( Figs 33, 34 View FIGURES 27–35 ); paired ventrolateral processes slightly shorter than aedeagal shaft, slender, and recurved dorsally and closely paralleling ventral margin of aedeagal shaft in lateral view ( Fig. 34 View FIGURES 27–35 ).

Type material. Holotype ♂ ( NMNS), TAIWAN: Kaohsiung, Shanping Forest Res., Aiyong Rd. ca. km 8, 1200m, 22°57'32"N 120°41'43"E, 24.vi.2004, C.H. Dietrich, 26-1, sweeping. GoogleMaps

Etymology. The specific epithet, a combination of “tenuis” meaning slender, and “ spina ” meaning spinelike, refers to the slender, spiniform aedeagal ventrolateral processes.

Remarks. This species is similar to R. compressus Zhang, Zhang & Wei externally, but differs in having: 1) the aedeagus ventrolateral process slender and gracile ( Fig. 33 View FIGURES 27–35 ; stout in R. compressus ); 2) aedeagus ventrolateral process recurved dorsally and paralleling ventral margin of aedeagal shaft in lateral view ( Fig. 34 View FIGURES 27–35 ; recurved but well separated from shaft in R. compressus ); 3) distal part of aedeagal shaft inflated in caudal view ( Fig. 33 View FIGURES 27–35 ; parallel-sided from base to apex in R. compressus ); 4) aedeagus ventrolateral process close to aedeagal shaft in caudoventral view ( Fig. 33 View FIGURES 27–35 ; well separated from shaft in R. compressus ).