Eurhadina (Singhardina) dissimilis Zhang et Huang, 2021

Zhou, Juan, Zhang, Yalin & Huang, Min, 2021, First records of the Oriental Eurhadina (Singhardina) robusta species group from China with descriptions of five new species (Hemiptera: Cicadellidae: Typhlocybinae), Zootaxa 5061 (3), pp. 510-522 : 512

Eurhadina (Singhardina) dissimilis Zhang et Huang sp. nov.

( Figs 26–38 )

Body creamy. Head sordid white. Crown, pronotum and scutellum without patches ( Figs 26, 28 ). Forewing pale white, without patches on basal half of corium; clavus with one yellow round patch centrally and a brown spot distally; brochosome area with one oblique strip along distal margin and parallel to two other oblique stripes along lateral margin of apical area of corium; RP vein with a brown spot on apical 1/3, 1st apical cell and its adjoining area covered with irregular brownish patches; 3rd apical cell quadrate. Hind wing white and translucent ( Figs 26, 27 ).

Male genitalia: Pygofer side brownish black distally; upper lobe strongly pigmented and serrated with several rigid microsetae distally ( Figs 30, 31 ). Subgenital plate with one long macroseta near basal 1/3; three moderate macrosetae arranged longitudinally near apical 1/3; row of fine microsetae extended from basal 1/3 to subapex and two rigid microsetae on apex ( Figs 32, 33 ). Connective slender with central ridge long and lateral arms weakly divergent ( Fig. 34 ). Paramere slender and smooth ( Fig. 35 ). Aedeagus with developed dorsoatrium; aedeagal shaft slim and strongly recurved in lateral view with two pairs of slim apical appendages; dorsal appendages not branched, arched towards outside and pegged by branches of ventral appendages in dorsal view; ventral appendages sinuated with a short protrusion at basal 1/3 and one branch in middle length ( Figs 36–38 ).

Specimens examined. Holotype: ♂, China, Yunnan Prov., Sanchahe , 7 June 1991, coll. Rungang Tian . Paratypes: 2 ♂, same data as holotype ; 1 ♂, China, Yunnan Prov., Mengyang, 7 June 1991, coll. Guangchun Liu and Wanzhi Cai ; 1 ♂, China, Yunnan Prov., Yaoqu, 7 June 2009, coll. Wei Cui.

Measurement. Length of male 3.62–3.76 mm (including wing).

Etymology. The specific epithet is derived from the Latin word “ dissimilis ”, referring to ventral appendages of aedeagal shaft different from other species in E. (S.) robusta group.

Remarks. This new species most resembles E. (S.) rona in male genitalia, but differs in having the ventral appendages of the aedeagal shaft with a shorter branch at midlength and a small protrusion at basal 1/3 ( Fig. 38 ).

Figures

FIGURES 26–38. Eurhadina (Singhardina) dissimilis sp. nov. 26, habitus, dorsal view. 27, habitus, lateral view. 28, head and thorax, dorsal view. 29, face. 30, male pygofer side, lateral view. 31, hind part of pygofer, lateral view. 32, subgenital plate, connective, paramere and sternite IX, dorsal view. 33, apex of subgenital plate, dorsal view. 34, connective, dorsal view. 35, paramere, dorsal view. 36, aedeagus, posterior view. 37, apex of aedeagal shaft, dorsal view. 38, aedeagus, lateral view.