Mucillnata rava, Qin, Dao-Zheng & Zhang, Ya-Lin, 2010

Qin, Dao-Zheng & Zhang, Ya-Lin, 2010, A key to the genera of Tropidocephalini (Hemiptera: Fulgoromorpha: Delphacidae) of China with description of Mucillnata rava, new genus and species, Zootaxa 2448, pp. 61-68 : 65-68

Mucillnata rava sp. nov.

( Figs. 34–49 )

Type material. Holotype male (macropterous), China: Hainan Province, Qixianling, 30 April 2008, coll. Qiulei Men ( NWAFU). Paratypes. 5 males, 1 female (macropterous), same data as holotype ( NWAFU).

Description. Body length: male (macropterous, n=6) 1.74-1.77 mm; female 2.01mm (macropterous, n=1), Total length (including tegmen): male (macropterous) 2.73-2.86 mm, female (macropterous) 3.21 mm.

Color. General color yellowish. Eyes reddish brown. Ocelli reddish black. Pronotum ochreous to brownish. Tegmina translucent with pale yellowish veins, speckled with yellowish to brownish flecks, wings greyish, subhyaline. Dorsum of male abdomen blackish except laterally yellowish white, venter of abdomen yellow, ornamented with tiny brownish spots sublaterally on each tergite. Rostrum brownish, apex black. Legs yellow to brownish yellow, protarsi brownish, tips of apical teeth on hind tibiae and tarsi black. Male pygofer yellow. Parameres brownish. Female with the same color as male. Ovipositor brownish.

Head. Including eyes slightly narrower than pronotum (about 0.96: 1) ( Figs. 34 , 37 ). Vertex trapeziform, short, at base about 3.20 times as broad as long in midline; distinctly narrower at apex than at base (about 0.66: 1), anterior margin transverse, somewhat incised caudad in middle, slightly projecting in front of eyes, lateral carinae ridged, slightly convex, distinctly converging anteriorly and diverging apically to lateral carinae of frons; posterior margin ridged, slightly concave and incised medially, vertex truncated in lateral view ( Figs. 34, 35 , 37, 39 ); Y-shaped carina with common stem prominent ( Figs. 34 , 37 ), areas of basal compartments shallowly concave. Frons ca. 1.52 times higher than its maximum width, widest at middle level of frons, lateral margins convex and ridged, median carina distinctly convex, very shortly forked at base, area within fork apparently depressed, frontal areas between carinae shallowly concave, at apex slightly shorter than at base (about 0.92: 1), apical frontal margin slightly curved medially ( Figs. 36 , 38 ). Rostrum with apex reaching mesotrochanters. Postclypeus at base apparently wider than frons at frontoclypeal suture, less than half the length of frons (about 0.41: 1) and ca. 1.27 times longer than anteclypeus, post- and anteclypeus together approximately 0.76x length of frons, postclypeus with median carina apparently convex, lateral carinae developed, in profile nearly in the same plane as frons at base ( Figs. 36 , 38, 39 ), Antennal segments short, cylindrical, slightly surpassing frontoclypeal suture, segment I slightly widening distad, almost as long as apical width, segment II about 2.5 times longer than I ( Figs. 36 , 38 ).

Thorax. Pronotum in midline longer than vertex (about 1.30: 1), anterior margin transverse, anterior lateral areas strongly sloping laterad, posterior margin concave inwardly, lateral carinae developed, slightly sinuate and diverging posterolaterally, not attaining hind margin, pronotum width 0.70-0.79, length 0.13-0.15 ( Figs. 34 , 37 ). Mesonotum gently vaulted, medially ca. 2.10 times longer than vertex and pronotum together, lateral carinae straight, slightly diverging posterolaterad but not reaching hind margin, median carina reaching end of scutellum except where obscure subapically ( Figs. 34 , 37 ). Tegmina 2.28-2.68 mm long, surpassing tip of abdomen more than one third of total length, apical margin acutely rounded, row of crossveins almost in apical third ( Figs. 35 , 40 ). Legs relatively short and stout, hind tibiae 0.66-0.71 mm long, bearing 2 lateral teeth on outer edge and 5 teeth at apex (grouped 2 at inner side and 3 at outer side), metabasitarsus (0.23-0.25) slightly shorter than tarsomere II (0.10-0.13) + III (0.18-0.22) combined, metabasitarsus joint distally with 6 black teeth in a transverse row, tarsomere II with 4 teeth. Post-tibial spur (0.20-0.22) nearly the same length as metabasitarsus, solid, thick, without teeth along lateral margin but with a rigid apical tooth.

Male genitalia. Male pygofer rounded in caudal aspect, ventrocaudal margin smooth, with single median process on the midventral margin ( Figs. 41, 43 ), in lateral view posterior margin concave medially, much longer than the anterior margin, ventral margin slightly wider than dorsal margin, laterodorsal angle angulate but not produced caudad, caudoventral angle triangularly produced ( Fig. 42 ); in ventral view ventrocaudal margin shallowly concave, apically with a rather developed projection in middle ( Fig. 44 ). Diaphragm narrow, centrally open and connecting with the opening for parameres ( Fig. 43 ). Parameres moderate, directed dorsocaudad in lateral view, in caudal aspect with bases broad and contiguous, then slightly narrowing towards apex, distally slightly converging and with small teeth along inner margins, apices rounded ( Figs. 41, 42, 48 ). Aedeagus tubular, broad, thick at base, in middle slightly broadened, gonopore apical on left side, subapically surround gonopore with notches and membraneous teeth ventrally to laterally; basal aedeagal process slender, apparently longer than aedeagus, arising basally, apical third strongly curved caudoventrad ( Figs. 45, 46, 47 ). Opening for parameres relatively small, ventral margin evenly concave ( Fig. 43 ). Male anal segment ring-like, caudoventral margin produced caudoventrad into single and spinose process on right side ( Figs. 41, 49 ).

Etymology. The name of the species alludes to the yellowish brown body color of the species. Distribution. Known only from the type locality in southern China (Hainan Province).

Figures

FIGURES 34 – 36. Mucillnata rava sp. nov., 34, male adult, dorsal view; 35, same, left lateral view; 36, head, ventral view.

FIGURES 37 – 49. Mucillnata rava sp. nov., 37, head and thorax, dorsal view; 38, head, ventral view; 39, head and thorax, left lateral view; 40, right forewing, macropterous male; 41, male genitalia, caudal view; 42, same, left lateral view; 43, pygofer, caudal view, anal segment, aedeagus and parameres removed; 44, same, ventral view; 45, anal segment, aedeagal complex and parameres, left lateral view; 46, aedeagus, left lateral view; 47, same, caudoventral view; 48, parameres, caudal view; 49, male anal segment, caudal view.