Kodaianella Fennah, 1956

Chang, Zhi-Min, Yang, Lin & Chen, Xiang-Sheng, 2020, First records of the genera Sivaloka Distant, 1906, with two new species from China, and description of a new species of genus Kodaianella Fennah, 1956 (Hemiptera, Fulgoromorpha, Issidae), ZooKeys 917, pp. 85-104 : 85

Genus Kodaianella Fennah, 1956

Kodaianella Fennah 1956: 508; Zhang and Chen 2010: 62; Gnezdilov 2013: 42; Chen et al. 2014: 136.

Type species.

Kodaianella bicinctifrons Fennah, 1956.

Diagnostic characters.

Body size small, slightly flat in dorsal view (Fig. 1 ). Width of head (Figs 1 , 3 ) including eyes, narrower than pronotum. Vertex (Fig. 3 ) irregularly quadrangular, with width at base ca 1.7-2.3 times longer than length in middle; disc of vertex slightly depressed, with median carina linear or obscure; anterior margin slightly arched, convex; posterior margin obviously arched or obtusely concave. Gena in lateral view (Fig. 4 ) with one obvious ocellus between compound eye and antenna. Frons (Fig. 5 ) irregularly hexagonal, nearly flat, with median carina explicit and straight, reaching to 2/3 of frons, without lateral carinae; maximum width broader than length in middle; base slightly narrow, broader toward to apical margin; lateral margins of frons incurved below level of socket of antennae, with verrucae near lateral margins. Clypeus (Fig. 5 ) triangular, with median carina obscure or absent. Rostrum (Fig. 5 ) nearly surpassing mesotrochanters. Pronotum (Figs 1 , 3 ) triangular, with median carina distinct or obscure and degraded, with distinct lateral carinae, without sub-lateral carinae; apical margin obtusely angled convex; posterior margin slightly arched or nearly straight. Mesonotum (Fig. 3 ) triangular, with median carina obvious or obscure or absent, sub-lateral carinae absent. Forewings (Figs 1 , 2 , 6 ) irregularly quadrangular, length ca 1.6-2.4 times longer than maximum width; anterior margin obviously arched; posterior margin straight; apical margin nearly truncated; longitudinal veins obvious and short transverse veins numerous and not obvious; with "hypocostal plate", ScP and RP convergent near base, ScP and RP veins long, not forked, nearly reaching apical margin of forewings; MP bifurcating into two branches near base; CuA forked into two branches near middle; CuP present; Pcu and A1 united near middle of clavus. Hindwings (Fig. 7 ) with three lobes: ScP-R-MP-Cu lobe developed; Pcu-A1 lobe distinctly thinner, less than half as wide as ScP-R-MP-Cu lobe; A2 lobe thinner, distinctly surpassing half-length of Pcu-A1 lobe, anterior and posterior margins subparallel; Pcu simple, anastomosing with A11; A11 unbranched, A12 simple and straight; A2 unbranched, not reaching to apical margin of hindwings. Hind tibiae with 2 lateral spines in distal half and 8-10 apical spines; first metatarsomere with 7-11 apical spines; second metatarsomere with 2 apical spines; spinal formula of hind leg (2)8-10/7-11/2.

Male genitalia.

Anal tube (Figs 8 , 9 ) irregularly triangular, longer in middle than maximum width in dorsal view, basal part narrow, apical part broader, maximum width near apical margin. Anal style (Fig. 9 ) moderately long, not surpassing anal tube. Pygofer (Fig. 8 ) symmetrical, irregularly rectangular; anterior and posterior margins nearly parallel in lateral view; dorsal and ventral margins nearly parallel in lateral view. Genital styles (Figs 8 , 10 ) irregularly triangular; dorso-anterior margin not obvious, dorso-posterior margin and ventral margin nearly parallel. Capitulum of genital styles obvious and long (Fig. 11 ). Phallobase (Figs 12 , 13 ) symmetrical, “U” -liked tubular in lateral view; dorsal lobe with apical part membranous, with various processes in lateral view. Aedeagus (Figs 12 , 13 ) with one hooked process in lateral view.

Female genitalia

(Figs 14 - 28 ). Anal tube (Figs 17 , 23 ) oblong, obviously longer in middle than its width; apical margin arched, convex; lateral margin parallel. Anal style (Figs 17 , 23 ) long or short, located near base of anal tube. Hind margin of gonocoxa VIII with endogonocoxal lobe not obvious (Figs 18 , 24 ); endogonocoxal process membranous, gradually narrowing. Anterior connective lamina of gonapophyses VIII (Figs 18 , 24 ) irregularly rectangular, with two lateral teeth bearing two keels in lateral group and three teeth in apical group. Posterior connective lamina of gonapophyses IX (Figs 19 , 20 , 25 , 26 ) triangular, with lateral field membranous; sublateral field with two sclerous triangular processes in lateral margin (Figs 19 , 25 ); median field with unobvious prominence (median dorsal process) (Figs 19 , 25 ); ventroposterior lobes acutely bent at an angle (posterior ventral lobes) (Figs 20 , 26 ). Gonoplacs (Figs 21 , 27 ) irregularly rounded, without keels. Hind margin of sternite VII (Figs 22 , 28 ) median area raised in ventral view, with small incision in middle.

Figures

Figures 1 - 13. Kodaianella furcata Chang & Chen, sp. nov. 1 habitus, dorsal view 2 habitus, lateral view 3 head and thorax, dorsal view 4 head and thorax, lateral view 5 head, ventral view 6 forewing 7 hindwing 8 male genitalia, lateral view 9 male anal segment, dorsal view 10 genital styles, lateral view 11 capitulum of genital styles, ventral view 12 phallobase and aedeagus, lateral view 13 phallobase and aedeagus, ventral view. Scale bars: 0.5 mm. Abbreviations: a = rod-like process; b = hook-like process; c = ventral lobe; d = long forked process.

Figures 14 - 22. Female genitalia. Kodaianella bicinctifrons Fennah, 1956 14 overall, dorsal view 15 overall, lateral view 16 overall, ventral view 17 female anal segment, dorsal view 18 anterior connective lamina of gonapophyses VIII, lateral view 19 posterior connective lamina of gonapophyses IX, dorsal view 20 posterior connective lamina of gonapophyses IX, lateral view 21 gonoplacs, lateral view 22 sternite VII, ventral view. Scale bars: 0.5 mm. Abbreviations: lf = lateral field of posterior connective lamina of gonapophyses IX; slf = sublateral field of posterior connective lamina of gonapophyses IX; mf = medial field of posterior connective lamina of gonapophyses IX; mdp = medial dorsal process; pvb = posterior ventral lobes; a = triangular process.

Figures 23 - 28. Female genitalia. Kodaianella longispina Zhang & Chen, 2010 23 female anal segment, dorsal view 24 anterior connective lamina of gonapophyses VIII, lateral view 25 posterior connective lamina of gonapophyses IX, dorsal view 26 posterior connective lamina of gonapophyses IX, lateral view 27 gonoplacs, lateral view 28 sternite VII, ventral view. Scale bars: 0.5 mm.