Jembra inouyei ( Matsumura, 1942 )

Shih, Hsien-Tzung, Liang, Ai-Ping & Yang, Jeng-Tze, 2009, The genus Jembra Metcalf and Horton from Taiwan with descriptions of two new species and the nymph of J. taiwana sp. nov. (Hemiptera: Cercopoidea: Aphrophoridae), Zootaxa 1979, pp. 29-40 : 31-33

Jembra inouyei ( Matsumura, 1942)

( Fig. 1 )

Jembroides inouyei Matsumura, 1942 , Ins. Matsumurana 16: 56.

Jembra inouyei ( Matsumura, 1942) [transferred by Liang, 1999: 345]. Type deposition: EIHU ( Komatsu and Hayashi, 1998).

Type locality: TAIWAN: Arisan [Alishan], Chiayi Co. ( Matsumura, 1942).

Coloration: General color brown, pronotum, mesoscutellum and tegmina marked with dark brown. Pronotum with anterior, central, nearly X-shaped dark marking. Tegmen brown with light brown patches on costal and apical areas, veins marked with blackish-fuscous and testaceous.

Structure: Head width: body width: body length= 1: 1.3: 3.1. Head in ventral view rhombus shaped, as long as wide; in dorsal view triangular, about 3.1 times as wide as long. Head subequal to pronotum in width at level of anterior margin, about 1.05: 1.0. Frons with 16 transverse ridges at each side in ventral view. Expanded flagellar base with 3 plate-shaped basiconic sensillae on ventrolateral side. Rostrum reaching beyond hind femora. Pronotum width at widest part greater than median length by about 1.4: 1.0. Tegmen about 2.5 times as long as wide, AM (length of anal margin): PM (length of posterior margin): LT (length of tegmen) = 1.0: 2.5: 3.2. Wing with 4 apical cells. Hind tibia with two lateral spines, distal one about 2.3 times as long as basal one; apical spines arranged into 2 rows, upper row composed of 8 spines, lower one composed of 7 spines.

Male Genitalia: Pygofer in lateral view subquadrate ( Fig. 1 B), with irregular processes along apical margin; pygofer ventral view pentagon like ( Fig. 1 C); dorsal process of pygofer lateral view narrowly semicircle-shaped and directed ventrally; ventral process of pygofer lateral view subquadrate, suddenly acute at apex and directed dorsally, shorter than ventral margin of pygofer in length, about 0.5 times; ventral processes of pygofer ventral view bilobed, each lobe acute at tip and direct mesade ( Fig. 1 C). Abdominal segment X cylindrical, longer than tergite of segment XI (XIt) in length by about 1.9 times ( Fig. 1 B). Aedeagus short, strongly curved inward in the middle of apex; in dorsolateral view V-shaped ( Fig. 1 G); in caudoventral or caudal view triangular ( Figs. 1 H–I); in dorsal view T-shaped ( Fig. 1 J). Connective in ventral view trapezoidal ( Fig. 1 F). Genital styles slender and elongate, nearly Y-shaped ( Figs. 1 D–E).

Measurements: Body length (from apex of vertex to tip of tegmen): 3, 9.38 mm; Body width: 3, 3.51 mm.

Specimen examined: 1 Male, TAIWAN, Lienhuachi, Nantou, 650m, 23–26. V. 1980, K. S. Lin & B. H. Chen (TARI).

Distribution: Taiwan.

Host plants: Unknown.

Remarks: According to our collecting results and historical studies ( Matsumura, 1942; Liang, 1999), this species is not only endemic to Taiwan, but is also rather rare. The present study was the first to dissect and illustrate the male genitalia of this species. Liang (1999) noted that this species is similar to J. nigronervosa (Lallemand) [the synonym of J. brevistriga (Walker) ] in general coloration and external appearance. Comparison of this species with J. nigronervosa (Lallemand) from Liang (1999: 345) and Metcalf and Horton (1934: Plate 43–136 and Plate 43–140) based on external morphology and male genitalia individually indicates that the species can be distinguished from J. brevistriga (Walker) by its pronotum with X-shaped dark marking; scutellum with basal lateral margins whitish testaceous; costal and apical areas of tegmina with whitish testaceous patches; aedeagus in dorsal view T-shaped, apical portion winged, and each lateral tip of winged portion directed upward.

Figures

FIGURE 1. Jembra inouyei (Matsumura, 1942): A, meracanthus of right midleg, dorsal view; B, abdominal segments IX – XI, lateral view; C, abdominal segment IX, ventral view; D, right genital style, outer side; E, the same, inner side; F, connective, ventral view; G, aedeagus, dorsolateral view; H – J, apex of aedeagus. H, caudoventral view; I, caudal view; J, dorsal view; aed, aedeagus; con, connective; dp, dorsal process of pygofer; gs, genital styles; IX – XI, abdominal segments IX – XI; mer, meracanthus; phb, phallobase; vp, ventral process of pygofer; XIt, abdominal tergite XI; XIs, abdominal sternite XI.