Spinoagallia, Li, Hu & Li, Zi-Zhong, 2012

Li, Hu & Li, Zi-Zhong, 2012, A new genus and species of Agalliini from China (Hemiptera, Cicadellidae, Megophthalminae), Zootaxa 3582, pp. 57-63 : 58

Genus Spinoagallia gen. nov.

Type-species: Spinoagallia freytagi sp. nov.

Description. Body form wedge shaped, slender.

Head wider than pronotum, posterior margin of crown sinuated behind eyes. Face granulose on surface, face across eyes slightly wider than long, dorsal margin bilaterally angulate, ocelli much closer to midline than to adjacent eye, clypellus ovate, extending beyond lora and genae, lateral margins of genae prominent medially. Pronotum arcuated in dorsal and lateral view, with fore margin strongly prominent, and hind margin nearly straight. Mesonotum large, triangular, with broad notch medially. Forewings with 3 closed anteapical and 4 apical cells, claval veins clearly separate, without extra crossveins. Front femur with well-differentiated IC (intercalary) setal row consisting of several setae arranced in arcuate row, and two strongly elongate setae on AV row; hind femoral macrosetae 2+1; hind tibial ( Fig. 4 ) macrosetae of PV row> 30 (dense and slender), of PD row 11, of AD row 7, of AV row 6; hind basitarsus with two platellae on distal transverse row.

Male genitalia. Pygofer, in lateral view, well sclerotized, bearing subquadrate caudodorsal lobe, dorsoposterior margin with macrosetae, posteromesal margin with spinelike process, directed ventrally. Valve nearly trapezoid, hind margin depressed in middle. Subgenital plates, in ventral view, triangular, with few scattered setae, not fused to valve or to each other. Style, slender, tapered in distal 1/3, apex cheliform. Connective longer than broad, with posterior margin deeply excavated medially. Aedeagus simple, preatrium elongate, shaft robust and short, symmetrical, without processes, dorsal apodeme poorly developed; gonopore apical.

Female genitalia. Seventh sternite ( Fig. 16 ) wider than long, subquadrate, with hind margin excavated medially, and bearing medial protuberance. First valvulae ( Figs 17–19 ), in lateral view, dorsally curved from base; ventral interlocking device on basiventral portion of shaft clear; dorsolateral surface sculptured by oblique rows of scalelike processes on distal 2/3; ventroapical region with scalelike processes, tip sharp, filelike ( Fig. 19 ). Second valvulae ( Figs 20–22 ), in lateral view, rather less curved dorsally from base, with broadest region at apical 1/4; dorsal hyaline area present, medial; dorsal prominence clearly pronounced; teeth on apical half of dorsal margin, positioned behind dorsal hyaline area, uniform, mostly subtriangular, not bearing denticles ( Fig. 22 ), larger in size basally than distally ( Fig. 21 ); shaft apex acute.

Distribution. China (Guizhou).

Remarks. This genus belongs to the group of genera with the hind margin of the crown sinuate. The general aspect of the new genus is similar to that of Austroagallia Evans. The unique characters of the male genitalia ( Figs 8-15 ); including the pygofer with macrosetae on the caudodorsal margin and a spinelike process curved ventrally on the mesal surface of the caudodorsal lobe ( Fig. 8 ) separate Spinoagallia from related genera in Agalliini .

Etymology. The genus name is derived from latin “ spino- ” due to the spinelike process on the pygofer lobe. The gender of the genus is feminine

Figures

FIGURES 1 – 7. Spinoagallia freytagi sp. nov. body in dorsal and lateral view; face and hind tibia: (1 – 4) male; (5 – 7) female. Scale bar = (1 – 2, 5 – 6) 1.0 mm, (3 – 4, 7) 0.5 mm.

FIGURES 8 – 16. Spinoagallia gen. nov. (8 – 15) Male specimen, S. freytagi sp. nov.: (8) genital capsule, lateral view; (9 – 10) valve and subgenital plate, ventral view; (11 – 12) aedeagus, (11) ventral, and (12) lateral view; (13) style, dorsal view; (14 – 15) connective, (14) dorsal, and (15) lateral view. (16) Female: VII sternite, ventral view.

FIGURES 17 – 22. First and second valvulae of ovipositor of Spinoagallia freytagi sp. nov., lateral view: (17 – 19) first valvulae; (20 – 22) second valvulae. DHA: dorsal hyaline area; DP: dorsal prominence.