Jembra Metcalf & Horton, 1934

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 : 30-31

Genus Jembra Metcalf & Horton, 1934

Diagnosis. Adults. The following combinations of characteristics of the genus Jembra are modified from Liang (1999: 339), and apparently separate Jembra from other genera in the tribe Aphrophorini: (1) pronotum with a median longitudinal carina and two pairs of indistinctly intermediate longitudinal carinae; (2) middle coxa with meracanthus ( Figs.1 A, 2F, 3G, 5K) on ventrolateral side, fin-shaped, lamellate, tapering to apex, with distinct or indistinct carina(e) on the middle and/or inner margin of dorsal side; (3) ventral processes of pygofer (= subgenital plates = genital plates) narrow, well separated from pygofer ( Figs. 1 C, 3J), bilobed, excavated centrally, widely separated distally, apex acute and directed mesad; (4) genital styles (= parameres) nearly Y-shaped ( Figs. 1 D–E, 5O–P) or triangular ( Figs. 3 K–L); (5) aedeagus with shaft very short, apical portion very broad, lamellate and flat, strongly extended laterodorsally ( Figs. 1 G–J, 3N–P).

Nymphs. In this paper the external nymphal morphology of Jembra is examined and presented for the first time, based on the fourth and fifth instar nymphs of J. taiwana sp. nov. as follows: (1) body length 11.54–12.43 mm, width (includes wing pads) 4.76–5.73 mm; (2) head in ventral view rhombus shaped ( Figs. 5 B, 5D); vertex near rectangular ( Figs. 5 A, 5C), anterior margin without distinct boundary with dorsal frons; frons dorsal view ( Figs. 5 A, 5C) distinctly protrusive, ventral view ( Figs. 5 B, 5D) flat longitudinally and with indistinctly transverse carinae at each side; ocelli distinctly nearer each other than to the eyes; antenna 9–segmented and flagellate, without antennal socket in base; rostrum rather long, extended to at least the end of the hind coxae; (3) pronotum nearly hexagonal, with distinct median carina; mesonotum developed; metanotum rather narrow in middle part; anterior and posterior wing pads triangular ( Fig. 5 E), each pad extended to lateral midlength of abdominal tergite II (fourth instar nymph) or tergite III (fifth instar nymph); coxal meracanthus of midleg undeveloped ( Fig. 5 F); each tibia of legs with apical spines arranged in 2 rows ( Figs. 5 G–H), hind tibia without lateral spines ( Fig. 5 G); (4) abdomen 9-segmented, abdominal tergite I very short; genital organ visible in fourth and fifth instar nymphs.

Distribution: China, Taiwan.

Remarks: Jembra is similar to Jembrana Distant, 1908 . The differences between them are shown in Table 1 . The morphological definition of the genus Jembrana follows those of Distant (1908) and Metcalf & Horton (1934).

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.

FIGURE 3. Jembra kuanae Shih, sp. nov.: A, Holotype, male: A, head and pronotum, dorsal view; B, head, ventral view; C, tegmen; D, punctures of tegmen; E, Wing; F, right midleg, dorsal view; G, the same, ventral view; H, tibia and tarsi of left hindleg; I, abdominal segments IX – XI, lateral view; J, abdominal segment IX, ventral view; K, right genital style, inner side; L, the same, outer side; M, aedeagus, lateral view; N, apex of aedeagus, caudal view; O, aedeagus, dorsal view; P, aedeagus, ventral view; ap, apical cell.

FIGURE 5. Jembra taiwana Shih, sp. nov.: A – B, the fourth instar nymph. A, head and pronotum, dorsal view; B, head, ventral view; C – H, the fifth instar nymph. C, head and pronotum, dorsal view; D, head, ventral view; E, anterior and posterior wing pads; F, coxal meracanthus of midleg; G, tibia and tarsus, hindleg; H. apical spines of tibia, hindleg; I – P, Holotype, adult, male: I, abdominal segments IX – XI, lateral view; J, abdominal segment IX, ventral view; K, coxal meracanthus of midleg; L, connective and genital styles, ventral view; M, aedeagus, lateral view; N, apex of aedeagus, caudal view; O, right genital style, outer side; P, the same, inner side; A 1 – A 3, abdominal segmented 1 – 3; AWP, anterior wing pad; PWP, posterior wing pad.