Evinus tenuis, Lu, Lin, Dietrich, Christopher H. & Zhang, Yalin, 2013

Lu, Lin, Dietrich, Christopher H. & Zhang, Yalin, 2013, Review of the leafhopper genus Evinus Dlabola (Hemiptera: Cicadellidae: Deltocephalinae), Zootaxa 3701 (4), pp. 421-436 : 433-436

Evinus tenuis sp. nov. (Figs 9A–O)

Description. Length (including forewing). Male: 2.3–2.4 mm; female: 2.4 mm.

Color as in E. angulatus but frontoclypeus brownish with several pairs of dark brown markings; lorum and anteclypeus bordered with black; mesonotum with small anteromedial area and pair of posteromedial spots brown without markings posterad of scutellar suture.

Anteclypeus distinctly tapered from base to apex, ca. twice as long as basal width, apex convex.

Male abdomen. 2T apodeme with submedial lobes convergent, straight, extended beyond posterior margin of tergite, somewhat variable in length among individuals. 1S apodeme with submedial lobe relatively short and broad, less than 2.0 times longer than wide; lateral extension bifurcate, branches subequal in length, dorsal branch slender and lateral branch broad. 2S apodeme with submedial lobes curved mesad, ca. 2.0 times as long as basal width.

Male genitalia. Pygofer lobe relatively long and narrow, ventral margin concave, posterior margin rounded. Subgenital plate lateral lobe attenuate, extended well beyond dorsal margin of pygofer lobe. Connective Y-shaped, arms moderately divergent. Aedeagus with shaft evenly curved dorsad in lateral view; evenly tapered distally in posterior view; weakly constricted near base in ventral view.

FIGURE 8. Evinus sinuatus sp. nov. A–B, Male, female, dorsal view; C, head, dorso-anterior view; D, face; E, male, lateral view; F, male pygofer, lateral view; G–H, connective and aedeagus, lateral and ventral view; I–J, 2nd abdominal tergite, dorsal and anterior view; K–L, male 1st sternal apodeme, dorso-anterior and anterior view; M–N, male 2nd sternal apodeme, dorsal and anterior view; O–P, male pygofer, caudal and ventral view.

FIGURE 9. Evinus tenuis sp. nov. A, Male, dorsal view; B, head, dorso-anterior view; C, face; D, male, lateral view; E, male pygofer, lateral view; F–G, connective and aedeagus, lateral and ventral view; H–I, male 2nd abdominal tergite, dorsal and anterior view; J–K, male 1st sternal apodeme, dorso-anterior view and anterior view; L–M, male 2nd sternal apodeme, dorsal and anterior view; N–O, male pygofer, caudal and ventral view.

Holotype: male, China, Yunnan Prov., Cangyuan County, Banhong Country, 1176m, 27.v.2011, Coll. Lu Lin (NWAFU). Paratypes: 1 male, 1 female, Thailand: Kamphaeng Phet Mae Wong NP Chong Yen, 16º 5.212’ N, 99º 6.576’E, 1306m, Malaise trap, 29.iv–5.v.2008, Piluek C. leg; 1 male, 2 females, Petchaburi Kaeng Krachan NP km33/helipad, 12º 50.177’ N, 99º 20.688’E, 735m, Malaise trap, 18-25.v.2009, Sinchai leg; 1 male, Petchaburi Kaeng Krachan NP Panernthung km27, 12º 49.302’ N, 99º 22.263’E, 950m, Malaise trap, 18-25.v.2009, Sinchai leg.

Remarks. This species resembles E. obscurus in coloration but differs in having the anteclypeus tapered, male 1S apodeme lobes shorter and broader, the 2T apodeme lobes strongly convergent, the connective shorter with arms more strongly divergent, the aedeagus less expanded in ventral view. Intraspecific variation was observed among specimens from different localities ( China, Thailand) in the length of the 2T apodeme lobes, in addition to slight differences in the length of the aedeagus. Additional collecting is needed to further elucidate the extent of such variation.

Etymology. The specific epithet refers to the relatively slender and attenuate shaft of the aedeagus.