Membranacea Qin & Zhang

Qin, Dao-Zheng, Liu, Yang & Zhang, Ya-Lin, 2011, A taxonomic study of Chinese Empoascini (Hemiptera: Cicadellidae: Typhlocybinae) (II), Zootaxa 2923, pp. 48-58 : 49

Membranacea Qin & Zhang , gen. nov.

Type species. Membranacea spinata Qin & Zhang , sp. n., here designated.

Description. Body robust. Head narrower than pronotum ( Figs 1 , 16 , 32 ), with median black apical spot ( Figs. 1, 2 , 16, 17 , 32, 33 ). Vertex short, rounded anteriorly, profile of transition to face rounded ( Figs 3 , 18 , 34 ), coronal suture distinct, reaching anterior margin of vertex ( Figs 1 , 16 , 32 ). Mesontum with basolateral triangles and apex black ( Figs 1 , 16 , 32 ). Face elongated, convex in profile ( Figs 3 , 18 , 34 ), lateral frontal suture present ( Figs 2 , 17 , 33 ). Ocelli present. Forewing rounded apically, apical cells occupying less than one-third total length, veins RP and MP’ dissociated at their bases, both arise from r cell and MP”+CuA’ from m cell, c and r cells almost equal in width ( Figs 4 , 19 , 35 ), hindwing with CuA branched, point of branching at or distad of coalescence of CuA with MP” ( Figs 5 , 20 , 36 ).

Male basal abdodminal sternal apodemes well developed, apically rounded and parallel sided ( Figs 15 , 31 , 46 ). Pygofer elongated, in profile strongly depressed dorsally at basal third, dorsal margin definitely discontinued dorso-caudally; free lobe of coxa distinctly narrowing caudad, its dorsal border membraneous and less pigmented in basal 2/3 but more sclerotized apically; caudo-dorsal angle of lobe with a few rigid microsetae, ventral appendage absent ( Figs 6, 8 , 21, 23 , 37, 39 ), dorsal bridge short ( Figs 7 , 22 , 38 ). Subgenital plate slightly longer than pygofer side, setae of basal group restricted to thickened dorsal margin in middle, lateral macrosetae bluntly terminated, arranged in single row except two rows for a short distance submedially ( Figs 6, 13 , 21, 29 , 37, 44 ). Paramere robust, much shorter than pygofer, apophysis bearing prominent dentifer and rather long setae situated more cephalad ( Figs 14 , 30 , 45 ). Connective lamellate, apical margin notched medially ( Figs 9 , 24 , 40 ). Aedeagus without dorsal apodeme, preatrium well developed, shaft tubular, arcuate, with symmetrical flanges dorsally and ventrally ( Figs 11, 12 , 26–28 , 42 , 43). Anal tube deeply sunk in the dorsal emargination of pygofer, basal process not visible in profile but extended mesad in ventral view joining base of aedeagal shaft ( Figs 6, 10 , 21, 25 , 37, 41 ).

Etymology. The name alludes to the distinctly membraneous dorsal border of coxa. Gender: feminine.

Remarks. The new genus is similar to Alebroides Matsumura , Apheliona Kirkaldy , Nikkotettix Matsumura , Ghauriana Thapa , Matsumurama Thapa , Bhatasca Dworakowska and Luodianasca Qin & Zhang in having veins MP’ and RP in the forewing arising from cell r and CuA in the hindwing branched apically. However, the new genus differs from these genera in having the pygofer strongly depressed dorsally beyond the basal third so the pygofer is discontinuous dorso-caudally, and from Alebroides , Apheliona , Ghauriana , Matsumurama and Nikkotettix in lacking the ventral pygofer appendage. The new genus differs from Bhatasca in having the basal group setae of the subgenital plate located near the midlength of the dorsal margin and from Luodianasca in the absence of ventrally projecting anal tube processes, the abdodminal apodemes well developed and the subgenital plate having setae in the basal group. The new genus also differs from Bhatasca and Luodianasca in having the lateral macrosetae of the subgenital plate arranged in two rows submedially.

Figures

FIGURES 1 – 15. Membranacea spinata Qin & Zhang, sp. n., 1, head and thorax, dorsal view; 2, face; 3, head and thorax, lateral view; 4, forewing; 5, hindwing; 6, male terminalia, lateral view; 7, pygofer side, dorsal view; 8, same, lateral view; 9, subgenital plates, paramere and connective, ventral view; 10, anal tube appendage, ventral view; 11, aedeagus, lateral view; 12, same, dorsal view; 13, subgenital plate, dorsal view; 14, paramere; 15, abdominal apodeme.

FIGURES 16 – 31. Membranacea unijugata Qin & Zhang, sp. n., 16, head and thorax, dorsal view; 17, face; 18, head and thorax, lateral view; 19, forewing; 20, hindwing; 21, male terminalia, lateral view; 22, pygofer side, dorsal view; 23, same, lateral view; 24, subgenital plates, paramere and connective, ventral view; 25, anal tube appendage, ventral view; 26, 27, aedeagus, lateral view; 28, same, dorsal view; 29, subgenital plate, dorsal view; 30, paramere; 31, abdominal apodeme.

FIGURES 32 – 46. Membranacea plana Qin & Zhang, sp. n., 32, head and thorax, dorsal view; 33, face; 34, head and thorax, lateral view; 35, forewing; 36, hindwing; 37, male terminalia, lateral view; 38, pygofer side, dorsal view; 39, same, lateral view; 40, subgenital plates, paramere and connective, ventral view; 41, anal tube appendage, ventral view; 42, aedeagus, lateral view; 43, same, dorsal view; 44, subgenital plate, dorsal view; 45, paramere; 46, abdominal apodeme.