Brevivalvala, Dai, Ren-Huai, Qu, Ling & Yang, Mao-Fa, 2016

Dai, Ren-Huai, Qu, Ling & Yang, Mao-Fa, 2016, First record of the tribe Phlepsiini (Hemiptera: Cicadellidae: Deltocephalinae) from China, with description a new genus and species, Zootaxa 4107 (1), pp. 81-84 : 81-82

Brevivalvala gen. nov.

Type species: Brevivalvala melanosticta Dai, Qu &Yang sp. nov.

Description. Body color. Background yellow to brown with dark brown irrorate markings.

Morphology. Head distinctly narrower than pronotum, discal portion of crown glabrous; slightly produced in dorsal view; crown midlength longer than next to eyes; anterior margin of head with two transverse striations. Pronotum not exceeding eyes anteriorly, lateral margin carinate, lateral margin longer than basal width of eye. Lorum wider than clypellus near base. Antennal base near middle of eye; antennal ledge weakly carinate. Clypellus widening apically. Ocelli present, close to eyes, on anterior margin of head.

Forewing with four apical cells and three subapical cells, inner subapical cell open (second m-cu crossvein absent) and outer one short, without crossvein between claval veins ( Fig. 5 ).

Male genitalia. Pygofer lobes narrowly rounded posteriorly; with macrosetae; without processes ( Fig. 6 ). Valve very short ( Fig. 7 ). Subgenital plate apices narrow, elongate; few short fine setae at subbase laterally; without macrosetae ( Fig. 7 ). Style broad at base, abruptly narrowing subapically, preapical lobe with fine setae, apex short ( Fig. 8 ). Connective Yshaped; broad and short ( Fig. 11 ). Aedeagus laterally compressed; with one pair of ventral processes; gonopore apical ( Figs 9, 10 ).

Distribution. Oriental region ( China).

Remarks. The new genus is very similar to Phlepsius Fieber, 1866 with the connective ( Fig. 11 ; Zahniser & Dietrich, 2013, Fig. 46J) with stem short but can be easily distinguished from Phlepsiu s and other genera of the tribe by the aedeagal shaft with a pair of processes ( Fig. 9 ), the short valve ( Fig. 7 ), the subgenital plate without macrosetae ( Fig. 7 ) and with apices elongate, and style with short apophysis ( Fig. 8 ).

Etymology. The new genus name is derived from the Latin word “ Brevi- ” (short) and “ valvala ” (valve), referring to the short valve.

Figures

FIGURES 1 – 5. Brevivalvala melanosticta sp. nov. 1. ♂, dorsal view; 2. ♂, lateral view; 3. ♂, face; 4. ♂, head in anterior view; 5. Forewing.

FIGURES 6 – 12. Brevivalvala melanosticta sp. nov. 6. Male pygofer side, lateral view; 7. Valve and subgenital plate, ventral view; 8. Style, dorsal view; 9. Aedeagus, ventral view; 10. Aedeagus, lateral view; 11. Connective, dorsal view; 12. Profemur and protibial, anterior view.