Neodurium fennahi Chang & Chen

Chang, Zhi-Min, Chen, Xiang-Sheng & Webb, Mick, 2015, Review of the planthopper genus Neodurium Fennah, 1956 (Hemiptera, Fulgoromorpha, Issidae), ZooKeys 517, pp. 83-97 : 86

Taxon classification Animalia Hemiptera Issidae

Neodurium fennahi Chang & Chen sp. n. Figs 1E, 2, 3

Type material.

Holotype: ♂, China: Guizhou, Yuxi, Ailao Mountain National Nature Reserve (24°12'N, 101°19'E), 21 July 2011, S.-Y. Xu, W.-B. Zheng and W.-C. Yang (IEGU); paratypes: 11♂♂, 6♀♀, same data as holotype (IEGU); 1♂, 1♀, same data as holotype (BMNH).

Description.

Body length (from apex of vertex to tip of forewing): male 6.0-6.2 mm, female 6.8-7.0 mm; Forewing: male 5.0-5.2 mm, female 5.6-5.8 mm.

Coloration. General colour (Figs 1E, 2 A–C) brown with pale mottling on the vertex and pronotum and base of frons. Eyes reddish brown to dark brown; antenna dark brown; frons (Fig. 2B) with dark brown spot dorsomedially; clypeus brown to dark brown; rostrum dark brown. Forewings (Fig. 1E) with dark semicircular mark on clavus forming ovoid patch with wings at rest. Legs with tips of spines on hind tibiae and tarsi black.

Head and thorax. Head (Fig. 2A) including eyes narrower than pronotum (0.74: 1.00). Vertex (Fig. 2A) shorter in middle than the wide at base (0.70: 1.00), strongly dorsoventrally depressed; disc of vertex with one obscure median carina. Frons (Fig. 2B) flat, disc slightly depressed, basal margin arched in aute angle, apical margin obtusely rounded, lateral margin ridged, lateral margins of frons incurved below level of socket of antennae, longer in middle than the widest breath (1.00: 0.78), with median carina and lateral carina, lateral carina reaching to the level of antennae. Pronotum (Fig. 2B) with median carina and lateral carina, lateral carina not reaching to the posterior margin. Mesonotum (Fig. 2A) triangular, with median carina and lateral carina. Hind tibiae each with one small spine near base and two distinct lateral spines, spinal formula of hind leg 8-14-2. Forewings (Fig. 2D) long, subquadrate, 2.8 times as long as maximum width; longitudinal veins distinct, Sc+R vein long, reaching beyond half length of tegmen, Sc and R seperated near base, M vein divided into three branches, CuA vein (cubitus anterior) not forked, claval vein Pcu (postcubitus) and A1 veins uniting in middle of tegmina. Hind wings (Fig. 2E) incised on apical margin into two lobes, anal lobe reduced, reticulate apically.

Male genitalia. Anal tube (Fig. 2G) relatively short, subquadrate in dorsal view, with two lobes near basal part, with four blunt lobes in apical margin. Anal column (Fig. 2G) short, located at the middle of anal tube. Pygofer (Fig. 2E) irregular subquadrate in lateral view, anterior margin moderately concave, posterior margin bended to ventro-lateral side. Genital styles (Fig. 2E) moderately long, dorsal margin producing a triangular inward lobe near capitulum; capitulum of style narrowing apically on short neck. Phallobase with dorsal lobe relatively long, not reaching the tip of lateral lobe; with two pairs of strap-shaped processes (dorsal process) near base in lateral view (Fig. 2J) and one pair of processes intermediately connected, forming “H” - shaped bridge in dorsal view (Fig. 2I); ventral lobe long, apex weakly sinuate in ventral view (Fig. 2K); lateral lobe split into two branches in ventral view (Fig. 2K). Aedeagus with pair of long convergent hook-like processes (Fig. 2I).

Female genitalia. Hind margin of sternum VII with deep and wide median concavity (Figs 3C, 3E) in ventral view. Anal tube (Fig. 3D) pear-shaped with basal 1/2 broader; anal column short, located at basal 1/3 of anal tube. Hind margin of gonocoxa VIII lobe-shaped in proximal part, endogonocoxal lobe relative broad; endogonocoxal process gradually narrowing (Fig. 3F). Anterior connective lamina of gonapophyses VIII (Fig. 3F) with 5 teeth bearing 5 keels in lateral group and 3 teeth in apical group; lateral fields of posterior connective lamina of gonapophyses IX (Fig. 3G, H) broad, with one obtuse and lamellar process on lateral margins; with scaly bulges between lateral margin and median field; median field with a subquadrate prominence (medial dorsal process) (Fig. 3G: b); ventroposterior lobes bent at obtuse angle (posterior ventral lobes) (Fig. 3G: a). Gonoplacs (Fig. 3I) without keels.

Etymology.

The new species is named for the memory of R.G. Fennah, who established the genus Neodurium .

Distribution.

China (Yunnan).

Remarks.

This species can be distinguished from other congeners by the dark oval patch on the forewings (Fig. 1E), phallobase with dorsal lobe (Fig. 2J) with two pairs of strap-shaped processes in lateral view (Fig. 2I).