Lauriana senticosa Ren & Qin

Ren, Feng-Juan, Zheng, Li-Fang, Huang, Yi-Xin & Qin, Dao-Zheng, 2014, Lauriana Ren & Qin, a new genus of the tribe Tropidocephalini (Hemiptera: Fulgoromorpha: Delphacidae) from China, Zootaxa 3784 (1) : -

Lauriana senticosa Ren & Qin sp. nov.

( Figs 1–18 )

Type material. Holotype Male (macropterous), China: Sichuan Province, Pingwu County, 7 July 2005, coll. Lifang Zheng ( NWAFU). Paratypes. 4 males, 1 female (macropterous), same data as holotype ( NWAFU).

Description. Body length. Male (n = 5) 2.25–2.45 mm, female (n= 1) 2.43 mm; total length (from apex of vertex to tip of forewing): male (n=5) 4.68–5.00 mm, female (n=1) 5.20 mm; forewing length: male (n=5) 4.19– 4.38 mm, female (n=1) 4.56 mm.

General colour of male brown. Vertex, frons and postclypeus apically to anteclypeus yellow, genae yellow except basal part dark. Eyes brownish red. Ocelli red with tinge of black. Antennae with scape sordid yellow ventrally and black dorsally, pedicle blackish brown. Postclypeus with most basal part and pronotum with anterior lateral areas behind eyes dark. Rostrum yellow, apex black. Pronotum between lateral carinae sordid yellow anteriorly, basad of which brown to blackish brown, pronotum and mesonotum with laterobasal angles brownish yellow. Tegulae yellow to yellowish brown. Forewings semitransparent, posterior margin and area between veins Cu1 and Cu2 blackish brown. Abdomen yellow except dorsum brown in middle. Legs yellow except anterior, middle to hind tibiae adorned with longitudinal blackish stripes, apices of spines on tibiae and tarsi black ( Fig. 5 ). Male pygofer in most part, parameres and medioventral process dark. Female with nearly same color as male, ovipositor black.

Head including eyes narrower than pronotum (about 0.68:1) ( Figs 1, 3 ). Vertex at base broader than medially long (about 1:0.88), slightly narrower at apex than at base (about 0.74:1), anterior margin sinuate and slightly produced in middle, lateral carinae subparallel except where expanded behind eyes; posterior margin slightly sinuate and incised medially; Y-shaped carina distinct except common stem feeble, areas of basal compartment concave ( Figs 1, 3 ); submedian carinae directed transversely to arms of Y-shaped carina, then angled anteriorly ( Figs 1, 3 ). Frons about 2.43 times higher than its maximum width, widest at apex, median carina conspicuous, not forked at base, lateral carinae almost straight, keeled and expanded from base towards apex, apical frontal margin arched ( Fig. 4 ). Postclypeus tricarinate, median carinae apparently convex, at base broader than frons at apex, post- and anteclypeus together approximately 0.87× length of frons ( Fig. 4 ), in profile postclypeus convex, surpassing level of frons and anteclypeus ( Fig. 2 ). Antennae bearing a group of sensilla on distal posterior margin, scape longer than wide (about 1:0.26), shorter than pedicle (about 1:1.71) ( Figs 3, 4 ).

Thorax. Pronotum trapezoidal, in dorsal view nearly as long as vertex in midline, posterior margin concave inwardly, lateral carinae developed, sinuate and diverging posterolaterally, apically converging but not reaching posterior margin, pronotum width 0.74–0.78 mm, length 0.15–0.18 mm ( Figs 1, 3 ). Mesonotum apparently vaulted, medially about 1.80 times longer than vertex and pronotum together, lateral carinae slightly diverging posterolaterally, not reaching posterior margin, median carina distinct but obscure apically ( Figs 1, 3 ). Forewing surpassing tip of abdomen approximately 2/3 of its total length ( Figs 1, 2 ), about 3.30 times longer than wide at maximum, widest at apical 1/4, covering black granules on longitudinal veins ( Figs 1, 2 , 18 ). Legs with hind tibiae 1.44–1.49 mm long, distinctly longer than post tarsi together, bearing 2 lateral teeth, post-tibial spur (0.28–0.31 mm) about half length of metabasitarsus, without teeth along lateral margin but with a rigid apical tooth ( Fig. 5 ).

Male genitalia. Pygofer narrow in profile, posterior margin sinuate, much longer than anterior margin, ventral margin apparently wider than dorsal margin; in caudal view pygofer widest in dorsal fourth, opening much longer than wide, ventrocaudal margin with single long, spine-like process on midventral margin inclined to the left ( Figs 6, 7 , 9, 11 ). Diaphragm widely open centrally for connecting with opening for parameres, lateral margins membranous and irregular, subbasally produced subtriangularly with numerous tiny strumae on surface, basal transverse sclerotized ( Fig. 11 ). Parameres fairly long, in caudal view contiguous and broad at base, then curving and narrowing apically, apices convergent and slightly expanded, dorsally emarginated with inner apical angles finger-like produced, in lateral view parameres with a subtriangular lobe-like process subbasally ( Figs 6–8 , 9, 12, 16 ). Aedeagus with phallobase developed, asymmetrical, bearing a short slender process arising near base on dorsal side, phallus strongly curved twice, n-shaped, ventrobasally has a thick process which is bifurcated at apex, distal limb of phallus membranous, bearing a series of teeth and strumae and three spines, one long spine on left side and adorned with numerous jagged teeth, other two spines located at apex on ventral side, on dorsal side of phallus tectiform apically, and from there gonopore opens ( Figs 6–9, 12–15 ). Male anal segment without processes but with a small tooth in middle ( Figs 6–9, 12, 17 ).

Host plants. Unknown.

Etymology. The specific epithet is an adjective derived from the Latin word “ senticosus ”, referring to the prickly apex of the aedeagus.

Distribution. Known currently from the type locality in southwest China (Sichuan Province).

Figures

FIGURES 1 – 8. Lauriana senticosa Ren & Qin, sp. nov. 1. male adult, dorsal view; 2. male adult, left lateral view; 3. head and thorax, dorsal view; 4. frons and clypeus; 5. hind leg; 6. male genitalia, left lateral view; 7. male genitalia, posterior view; 8. anal segment, aedeagal complex, connective and paramere, left lateral view. Scale bars = 1 mm (Figs 1, 2); 0.2 mm (Figs 3 – 8).

FIGURES 9 – 18. Lauriana senticosa Ren & Qin, sp. nov. 9. male genitalia, left lateral view; 10. pygofer, ventral view; 11. pygofer, posterior view; 12. anal segment, aedeagal complex, connective and paramere, left lateral view; 13. aedeagus, left lateral view; 14. aedeagus, right lateral view; 15. distal limb of phallus, left lateral view; 16. parameres, posterior view; 17. anal segment, posterior view; 18. forewing. Scale bars = 0.2 mm (Figs 9 – 14, 16, 17); 0.1 mm (Fig. 15); 0.5 mm (Fig. 18).