Cornicola maculatus Xu, Dietrich & Qin, 2023

Xu, Ye, Dietrich, Christopher H. & Qin, Dao-Zheng, 2023, A key to genera of Dikraneurini from China, with description of a new species of Cornicola Ohara & Hayashi (Hemiptera, Cicadellidae, Typhlocybinae), ZooKeys 1145, pp. 191-200 : 191

Cornicola maculatus Xu, Dietrich & Qin sp. nov.

Figs 1-15 , 16-24

Type materials.

Holotype. ♂ (INHS) S.W. China, Chongqing Jinyan Shan, 29.829630°N, 106.376380°E, 872 m, 10 Sep. 2016, CH Dietrich, sweep roadside, CN-16-08. Paratypes. 4♂5♀(INHS) same data as holotype.

Description.

Body length: male 3.1-3.5 mm, female 3.2-3.5 mm.

Adults of this species are polymorphic with two color forms, one being mostly white (Figs 6 , 7 ) and other with extensive reddish-brown coloration (Figs 3 , 4 ) in both males and females (Figs 1-8 ). Reddish-brown morph (Figs 1 , 3-5 ): Crown beige, with two small black oval patches and two irregular whitish patches surrounding dark red coronal suture, frontoclypeus with lateral dark brown band in lower half extending to base of antenna, lorum orange to dark (Figs 1 , 3 , 5 ). Eyes dark, ocelli irregularity with whitish spots (Figs 1 , 3-5 ). Pronotum mostly orange red, with two small oval patches behind eyes, mesonotum with suborbicular spots, otherwise whitish except heart-shaped black patch medially in scutellum (Figs 1 , 3-5 ). Forewing orange to reddish, veins brown; hind wing hyaline, veins white (Figs 1 , 3 , 4 , 9 ). Front and middle legs almost hyaline, whitish except tarsus brown, hind legs brown (Fig. 1 ). White morph (Figs 2 , 6-8 ): white overall with black spots and maculate, as in reddish-brown morph.

Basal sternal abdominal apodemes parallel sided, reaching end of segment IV (Fig. 15 ). Male pygofer almost triangular in lateral view, dorsal margin with fingerlike process arising near distal third of dorsal margin and extended posterad, not reaching apex; distal lobe bearing 6 or 7 microsetae, ventral margin with 8 or 9 feeble microsetae, dorsal bridge occupying more than one-third length of pygofer (Figs 16 , 17 ). Anal tube gradually narrowed apically (Fig. 18 ). Subgenital plate longer than pygofer lobe in lateral view, broad basally, fused in basal two-thirds, tapered distally, apex rounded and strongly narrowing, with sparse scattered microsetae, 6-8 macrosetae arranged in single row along each dorsolateral margin near midlength (Fig. 19 ). Connective widest medially with subapical angular projection in lateral view, apical margin emarginate medially (Figs 20 , 21 ). Style apodeme much shorter than apophysis, preapical lobe absent, without conspicuous setae, slightly broadened preapically, apex smooth, slightly broadened then tapered to hooklike tip, curved laterad (Fig. 22 ). Aedeagus with shaft broad at base, narrowed near middle and with broad dorsal distal lobe in lateral view; pair of slender distal processes extended laterad from adjacent gonopore, each with short dorsomedially directed spine and elbow-like bend near midlength with distal part curved dorsomesad in posterior view and anterodorsad in lateral view (Figs 23 , 24 ).

Notes.

This new species differs from Cornicola mizuki by the characters noted in the key.

Distribution.

China (Chongqing).

Etymology.

The species name is derived from the Latin words ' maculatus ', referring to the black spots on the crown and thorax.

Figures

Figures 1 - 15. Cornicola maculatus Xu, Dietrich & Qin sp. nov. 1, 2 Adults showing different body coloration 3 female adult, dorsal view 4 female adult, left lateral view 5, 8 face 6 male adult (abdomen removed), dorsal view 7 male adult (abdomen removed), left lateral view 9 forewing 10 hind wing 11 left femur and base of tibia, anterior view 12 left middle femur, anterior view 13 left hind femur apex and base of tibia, anterior view 14 distal part of hind tibia and tarsus, anterior view 15 sternal apodemes.

Figures 16 - 24. Cornicola maculatus Xu, Dietrich & Qin sp. nov. 16 male genital capsule, left lateral view 17 male pygofer, dorsal view 18 anal tube, left lateral view 19 subgenital plates 20 connective, lateral view 21 connective, dorsal view 22 style 23 aedeagus, left lateral view 24 aedeagus, ventral view.