Trocnadella Pruthi

Dai, Wu, Dietrich, Christopher H. & Zhang, Yalin, 2015, A review of the leafhopper tribe Hyalojassini (Hemiptera: Cicadellidae: Iassinae) with description of new taxa, Zootaxa 3911 (1), pp. 1-142 : 34-35

Trocnadella Pruthi

Trocnadella Pruthi 1930a: 18 . Type species: T. shillongensis Pruthi 1930

Straganiassus Anufriev, 1971. Type species: Stragania matsumurai Metcalf. Anufrieviella Nast, 1981 . Type species: Macropsis melichari Oshanin.

Stramineous to brown, without small black spots on dorsum of thorax and forewing. Body moderately robust, depressed. Head in dorsal view narrower than pronotum; crown short with anterior and posterior margins approximately parallel in dorsal view; vertex and frontoclypeus transversely rugose; face distinctly broader than tall; gena obtusely emarginate below eye; rostrum slender, extended slightly beyond front trochanter; anteclypeus flat, parallel-sided from base except broadened just distad of lorum and tapered to apex, apex truncate, even with lower margin of gena; lorum narrow, well separated from lateral and ventral margins of gena, with basal half of mesal margin bordering frontoclypeus; frontoclypeus convex; antennal ledge well developed, broad, nearly transverse; lateral frontal suture nearly obsolete, extended only short distance above antennal ledge; ocellus large, above and slightly mesad of antennal pit and distant from eye. Pronotum convex, transversely rugose; lateral margins long, strongly carinate, evenly divergent posterad. Exposed part of mesonotum and scutellum together slightly shorter than pronotum, transversely rugose; scutellar suture arched anterad, scutellum weakly convex with apex acute. Forewing venation somewhat obscure toward base; membrane hyaline with some opaque sclerotization in basal 2/3; setae very short, fine, and inconspicuous; appendix broad, extended to wing apex, slightly narrower than inner apical cell; vein R with 6–8 branches; three closed anteapical cells present; apical cells 2–4 short, parallel-sided, bases not aligned; posterior branch of CuA connected to margin at apex of clavus; clavus truncate apically; texture of inner apical cell same as that of appendix and adjacent apical cell. Front femur with pair of dorsoapical macrosetae and AM1 well developed but PD, AD and AM without well differentiated preapical setae; intercalary group consisting of irregular double row of moderately stout setae continuous with setae of similar size in basal AV group; PV with several macrosetae; tibia with dorsal surface flat and bicarinate, AD and PD each with 5 macrosetae. Mesothoracic femur with pair of dorsoapical macrosetae; other setae poorly differentiated. Hind femur macrosetae 2+2+1 with antepenultimate seta as large as others; tibial rows PD, AD, and AV with 15, 10, and 14 macrosetae, respectively; tarsomere I without dorsoapical setae, plantar surface with scattered setae, pecten with 4 platellae.

Male abdominal apodemes poorly developed. Sternite VIII only slightly longer than sternite VII, broader than long, lateral margins parallel, apex convexly produced. Genital capsule with posteroventral part almost completely concealed by sternite VIII in repose, with only anal tube and part of posterior pygofer margin visible. Pygofer with tergite long, well sclerotized, narrowly emarginate distally in dorsal view; lobes rounded, with posterodorsal group of several macrosetae and numerous setae of various sizes distributed in band along posteroventral margin;, posterior margin straight, without basolateral process; anterodorsal margin in lateral view emarginate along intersegmental membrane; intersegmental membrane between anal tube and aedeagal atrium without accessory lobes, sclerites, or setae; basolateral setal group absent. Subgenital plates short, broad basally, narrowed and curved ventrad distally, depressed, bases separated, apices divergent, with several scattered setae. Valve long, subquadrate, broadly fused to pygofer at base, posterior margin angulately emarginate. Connective fused to aedeagus. Style well developed, articulated to basolateral lobes of fused aedeagus-connective, in lateral view with apodeme nearly straight, junction with apophysis forming obtuse angle; apodeme long, spatulate; apophysis slightly longer than apodeme, usually with preapical tooth or process, apex weakly or not expanded. Aedeagus simple, tubular, Ushaped in lateral view, preatrium absent, atrium in posterior view without well developed ventrolateral lobes, dorsal apodeme platelike, articulated to weakly sclerotized U-shaped dorsal connective; shaft without processes apex bifid in posterior view; gonopore apical. Female sternite VII truncate; first valvulae slender, dorsal sculpturing imbricate; second valvulae slender, evenly curved dorsad, with three prominent, widely spaced preapical teeth on dorsal margin in distal half, apex tapered and finely serate.

Notes. Trocnadella was originally described based on females of two species from India. Viraktamath (1979) redescribed the genus and included T. arisana (Matsumura) , illustrating the male genitalia for the first time. Anufriev (1987) treated Straganiassus Anufriev and Anufrieviella Nast as junior synonyms of Trocnadella . Species of the genus closely resemble Trocniassus gen. nov. (described below) but differ in lacking a row of cucullate setae on the first hind tarsomere and in having the aedeagus fused to the connective. The genus presently comprises ten species (see Checklist). A key to species cannot be provided at present because the genus is in need of comprehensive revision. The identities of some species described from China are uncertain because the original descriptions and illustrations (e.g., Li 1995) are difficult to interpret and specimens were not available for study. Also, the two species originally included in the genus ( Pruthi 1930) were described based on females and males are needed for positive identification.