Laminaris Cao & Dietrich, 2020

Cao, Yanghui, Dietrich, Christopher H., Dmitriev, Dmitry A. & Zhang, Yalin, 2020, Taxonomic study of some Afrotropical erythroneurine leafhoppers (Hemiptera: Cicadellidae: Typhlocybinae), Zootaxa 4860 (3), pp. 301-351 : 303

Laminaris Cao & Dietrich gen. nov.

Type species: Laminaris angusta sp. nov., here designated.

Description. Body robust and medium sized, 3.0 to 3.5 mm, without distinct color pattern. Crown fore margin broadly rounded apically, coronal suture visible basally. Ocelli vestigial, represented by pair of pale crescent-shaped areas on dorsal part of face. Head including eyes wider than pronotum. Face convex in profile. Pronotum with lateral margins only slightly divergent posteriorly in dorsal view, hind margin slightly and evenly concave. Forewing ( Fig. 1a ) with first and third apical cell wide, second and fourth apical cell narrow, fourth apical cell not reaching apex of wing, shorter than third, without AA and AP. Hind wing ( Fig. 1b ) with RA.

Male abdominal apodemes 2S very short, not extended to hind margin of sternite III. Anal tube membranous, with sclerotized ring subapically, terminating ventrolaterally in pair of long, laminate appendages to ventral margin of pygofer lobe.

Male genital capsule cylindrical, moderately sclerotized. Pygofer lobe with few fine setae near dorsal and ventral margins, hind margin rounded or truncate, with numerous spicules; dorsal appendage usually stick-like, fused to lobe basally; ventral appendage absent. Subgenital plate narrow and long, more or less evenly tapered from base to apex, surpassing hind margin of pygofer lobe, apical part narrow, curved dorsad, well pigmented; with row of stout microsetae along outer margin from subbase to apex, some microsetae scattered on distal disc, with oblique row of 4–5 macrosetae extended from outer margin of subbase to middle. Style with apical part elongated and slender, with longitudinal furrows, preapical lobe small but distinct, gemmiform. Connective V-shaped, central lobe much shorter than lateral arms, with apical margin slightly concave. Aedeagal shaft tubular, with or without process; dorsal apodeme long and narrow in lateral view, slightly wider than shaft in caudal view; preatrium rudimentary to short; gonopore subapical or central, on ventral side.

Etymology. The generic name is derived from Latin adjective “ laminaris ” which means flattened, referring to the lamellate anal tube appendage. The name is feminine.

Distribution. Republic of Congo.

Diagnosis. The new genus is similar to Sanatana Dworakowska, 1984 in having well-developed anal tube appendages and slender apical part of the style, but its head is wider, pygofer lobe is longer, connective has a shorter central lobe and the aedeagus lacks paired basolateral processes.

Figures

FIGURE 1. Laminaris angusta. a. forewing; b. hind wing; c. abdominal apodemes 2S; d. genital capsule; e. anal tube appendage and pygofer dorsal appendage; f. subgenital plate, style, connective and sternite IX; g. subgenital plate, dorsal view; h. style, dorsal view; i. style, lateral view; j. connective; k. aedeagus, lateral view; l. aedeagus, caudal view.