Magadhaideus xiphos Long & Chen

Long, Jian-Kun, Chang, Zhi-Min, Yang, Lin & Chen, Xiang-Sheng, 2017, Magadhaideus, a new genus of the tribe Plectoderini with the description of a new species from China (Hemiptera, Fulgoromorpha, Achilidae), ZooKeys 724, pp. 21-29 : 23-27

Magadhaideus xiphos Long & Chen sp. n. Figs 1-4, 5-15, 16-20

Type material.

Holotype: ♂, CHINA, Fujian: Wuyishan National Natural Reserve (26°54'N, 116°42'E), sweeping, 21 August 2013, Y. Liu. Paratypes, Fujian: 2 ♂♂, same data as holotype; 2 ♂♂ 2 ♀♀, Wuyishan National Natural Reserve (26°54'N, 116°42'E), sweeping, 21 August 2013, Y.-Y. Liu; 2 ♂♂, Wuyishan National Natural Reserve (26°54'N, 116°42'E), sweeping, 24 August 2013, Y. Liu. Shanxi: 1 ♂, Lishan National Natural Reserve (35°25'N, 111°58'E), sweeping, 24 July 2012, P. Zhang. Jiangxi: 1 ♂ 2 ♀♀, Jiulianshan National Natural Reserve (24°38'N, 114°33'E), 600-700 m, sweeping, 19-27 July 2009, Z.-H. Meng. Zhejiang: 2 ♀♀, Qingliangfeng National Natural Reserve (30°07'N, 118°51'E), sweeping, 25 July 2009, T.-T. He. Guizhou: 1 ♀, Maolan National Natural Reserve (25°30'N, 107°98'E), sweeping, 4 August 2006, F.-L. Xu. Guangdong: 2 ♀♀, Nankunshan National Natural Reserve (23°38'N, 114°38'E), sweeping, 23 August 2010, Y.-J. Li.

Diagnosis.

The salient features of the new species include the following: forewing with a dark brown stripe from base to apex of clavus (Figs 1-4, 8); medioventral process of pygofer with two small lateroapical processes, directed outward, apical margin truncate (Fig. 12); and phallobase of aedeagus with apical 1/2 branched into seven long processes (Figs 14-15).

Description.

Measurements. Body length (from apex of vertex to tip of forewing): male 4.2-4.6 mm (n = 7), female 4.9-5.1 mm (n = 10); forewing length: male 3.5-3.9 mm (n = 7), female 4.2-4.3 mm (n = 10).

Colouration. Head pale yellowish brown. Vertex (Figs 1, 3, 5) along each lateral margin with one dark brown marking at base and another one brown marking at level of anterior margin of eyes; along midline with two brow to dark brown markings apically. Triangular areolets (Figs 1, 3, 5) at lateroapical angles of head with a dark brown marking. Frons (Fig. 6) with seven dark brown markings along lateral margin, disc in middle scattered ivory-white dots between eyes. Postclypeus ivory-white, with a transverse brown band apically. Frontoclypeus (Fig. 6) dark brown, with the base and apex ivory-white. Rostrum yellowish brown, with apex brown. Genae, as in Fig. 7, with four and two transverse short dark brown stripes, respectively along anterior margin and above eyes; another two large parallel transverse stipes, one above and one beneath antennae. Eyes (Figs 1-7) generally reddish brown; ocellus (Figs 2, 4, 7) yellowish white. Antennae (Figs 2, 4, 6-7) yellowish brown. Pronotum (Figs 1, 3, 5) brown, lateral lobe with five dark brown areas along posterior margin. Mesonotum (Figs 1, 3, 5) dark brown, posterior two-thirds between lateral carinae with few scattered ivory-white dots, apical angle and areas along posterior margin between lateral carinae ivory-white, each lateral angle with a large ivory-white marking along posterior margin. Tegula (Figs 1-5) yellowish brown, along posterior margin paler. Forewing (Figs 1-4, 8) greyish white, with a broad irregular longitudinal dark brown band from base to apex of clavus, small variably sized markings scattered as in Fig. 8. Hindwing pale brown, veins brown. Legs (Figs 2, 4) ivory-white to pale yellowish brown; tibiae yellow basally, the first tarsomeres dark brown; pro- and mesofemora with a dorsal dark brown spot near base, pro- and mesotibiae with a ring dark brown spot respectively near base and in the middle; hind tibia with two ring dark brown spot near base. Abdomen dark brown.

Head and thorax. Ratio width of vertex at posterior margin to its length in midline 1.8 (Fig. 5), anterior third produced before eyes. Ratio length of frons in midline to its maximum width 1.3, ratio maximum of width to width at apex 1.9. Ratio length of postclypeus in midline to length of frons 0.5 (Fig. 6). Rostrum with ratio apical to subapical segment 1.2. Lateral lobes of pronotum with three short longitudinal carinae behind eye, ratio length in midline to length of vertex 0.8 (Fig. 5). Mesonotum (Fig. 5) in midline 5.1 times longer than pronotum, 2.3 times longer than pronotum and vertex combined. Forewing (Fig. 8) with ratio of length to maximum width 2.9, vein R with subapical cell. Hindwing (Fig. 9) with length to maximum width ratio of 2.0. Post-tibiae with a lateral spine in basal two-fifths, spinal formula 7 –6– 6.

Male genitalia. Anal segment in dorsal view (Fig. 10) with ratio length to maximum width 1.2, basal margin roundly convex in middle, apical margin slightly convex to subtruncate, anal style not exceeding apical margin of anal segment; in lateral view (Fig. 11) apex of anal segment bent ventrally, apical margin roundly convex, lateral margin near middle with a strong spinous process, directed ventrally. Pygofer in lateral view (Fig. 11) with posterior margin strongly sinuate, medioventral process (Fig. 12) short and broad, with two small lateroapical processes, directed outward, apical margin truncate. Genital style (Fig. 13) relatively narrow and long with apical margin roundly convex, a large and broad process, with apical margin sinuate, rising from middle of dorsal margin. Aedeagus (Figs 14-15) asymmetrical, phallobase with apical half branched into seven long processes which narrowing apically, acute at apexes; among them, two lateral processes with apexes bent, directed inwards. Phallic appendages straight, xiphoid, distinctly exceeding apical margin of phallobase.

Female genitalia. Seventh abdominal sternum with anterior and posterior margins parallel, posterior margin truncate or slightly concave (Fig. 16). Anal segment (Figs 17-18) in dorsal view suborbicular, apical margin incised in the middle, basal margin M-shaped approximatively, with finger-like process in the middle; apex of anal stylet reaching or slightly exceeding apex of anal segment. First valvula with five spines (Fig. 19). Second valvula with two lateral lobes incompletely symmetrical, narrowing and sharp apically, directed postero-ventrally (Fig. 20). Third valvula with outer surface shagreen (Figs 16, 18); in lateral view (Fig. 18) apical margin sinuate, with an angulate process ventrally, directed inwards.

Remarks.

This new species differs from Magadhaideus cervina (Fennah, 1956) comb. n. by: forewing with a dark brown stripe from base to apex of clavus (without stripe in cervina ); medioventral process of pygofer with two small lateroapical processes, directed outward (directed inward in cervina ); genital style with dorsal process almost not branched into lobes (distinctly branched into three lobes in cervina ).

Etymology.

The species name refers to the phallic appendage xiphoid.

Host plant.

Unknown.

Distribution.

China (Fujian, Shanxi, Jiangxi, Zhejiang, Guizhou and Guangdong).