Deferunda Distant, 1912

Lv, Shasha, Chen, Xiangsheng & Long, Jiankun, 2023, Two new species of the planthopper genus Deferunda Distant from China (Hemiptera: Fulgoromorpha: Achilidae), with the first description of the male of Deferunda acuminata Chou & Wang, Zootaxa 5256 (5), pp. 483-493 : 484

Deferunda Distant, 1912

Majella Kirkaldy, 1906: 421 , preoccupied by Majella Ortmann, 1893 .

Deferunda Distant, 1912: 186 ; Fennah, 1950: 104; Chen et al., 1989: 57; Wang et al., 2008: 775; Chen & He, 2010: 60 ; Long et al., 2013: 1264; Gnezdilov, 2021: 68.

Okatropis Matsumura, 1914: 272 , synonymized by Fennah, 1950: 104.

Majellana Metcalf, 1948: 63 , nom. nov. for Majella Kirkaldy, 1906 , synonymized by Fennah, 1950: 104.

Type species. Deferunda stigmatica Distant, 1912: 186 , by original designation.

Diagnosis. Small to medium-sized achilids. General color yellowish white to fuscous.

Head with eyes distinctly narrower than pronotum. Disk of vertex strongly depressed, anterior margin rounded, subtruncate or truncate, posterior margin subtruncate or slightly concave, lateral margins distinctly foliate, highly elevated, diverging posteriorly. Frons slightly convex in profile, longer in mid line than maximally wide, basal margin roundly convex or truncate one-fifth as wide as broadest part; median carina simple, with basal half obsolete, lateral margins strongly foliate basally, disk depressed at basal third. Postclypeus shorter than frons in mid line, nearly straight in lateral view. Ventral margin of compound eyes concave. Pedicel of antennae subovate. Rostrum relatively short, reaching mid trochanters, with apical and subapical segments equal in length. Pronotum shorter than vertex in mid line, anterior margin angularly or rounded convex, lateral carinae diverging posteriorly, reaching posterior margin. Mesonotum longer than vertex and pronotum combined. Forewing costal margin slightly convex, longer than wide, ScP + R forked in basal third, CuA forked level with union of claval veins, MP forked level with node, CuA deeply convex distad of claval apex, hence slightly detached; apical part behind apex of clavus dropping and covering apex of abdomen.

Male genitalia, pygofer in lateral view distinctly shorter dorsally than ventrally, anterior margin concave, posterior margin convex caudally, in ventral view with a pair of medioventral processes. Anal tube, in dorsal view, broadly elliptical or ovoid with apical margin rounded, truncate or emarginate. Aedeagus with phallobase dividing into 4 lobes distally, ventral lobe usually cleft at apex medially. Aedeagal appendages slender, much longer than phallobase, tubular, tapering distally. Gonostyli narrow at base, and widening distally, each nearly triangular, outer margin usually with 1 or 2 processes apically and subapically.

Distribution. Palearctic, Oriental and Australian regions ( Fig. 40 ).

Figures

FIGURE 40. Geographic distributions of Deferunda species: D. majella (Kirkaldy, 1906) (▲); D. stigmatica Distant, 1912 (▲); D. lineola (Matsumura, 1914) (●); D. philippina (Melichar, 1914) (●); D. rubrostigmata (Matsumura, 1914) (●); D. albomaculata (Muir, 1922) (●); D. incompta Dlabola, 1961 (●); D. acuminata Chou & Wang, 1985 (▲); D. truncata Chen, Yang & Wilson, 1989 (▲); D. striata Wang & Liu, 2008 (●); D. trimaculata Wang & Peng, 2008 (●); D. diana Chen & He, 2010 (▲); D. qiana Chen & He, 2010 (▲); D. ellipsoidea Long, Yang & Chen, 2013 (●); D. lua Long, Yang & Chen, 2013 (▲); D. dentata sp. nov. (▲); D. interana sp. nov. (●).