Magadhaideus 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 : 22

Genus Magadhaideus Long & Chen gen. n. Figs 1-4, 5-15

Type species.

Magadhaideus xiphos Long & Chen, sp. n., here designated.

Differential diagnosis.

The new genus and Magadha are readily distinguished from other known genera in the tribe Plectoderini by mesonotum with a transverse callus on anterior third of disc (Fig. 5). The new genus differs from Magadha in: pygofer (Fig. 11) in lateral view with dorsal margin distinctly shorter than ventral margin (dorsal margin at least as long as ventral margin in Magadha ); medioventral process (Fig. 12) broad and short, with a small sharp process lateroapically (relatively slender and without small sharp process lateroapically in Magadha ); genital style (Fig. 13) without a finger-like process from near base of dorsal margin (with a finger-like process from near base of dorsal margin in Magadha ); phallobase (Figs 14-15) with apical half branched into much more and longer processes (apical half, in Magadha , at most branched into one dorsal, one ventral and two lateral lobes, all of them short).

Description.

Width of head with eyes 0.8 times wider than width of pronotum. Vertex (Figs 1, 3, 5) with disc distinctly depressed, width at base wider than length in midline, median carina obsolete, anterior margin carinate, angularly convex, lateral margins slightly foliate, diverging basally, posterior margin subangularly concave. Triangular areolets (Fig. 5) at lateroapical angles of head distinct. Frons (Fig. 6) slightly convex in lateral view, with length in midline distinctly longer than maximum width, median carina complete, lateral margins slightly foliate, straight diverging to below level of antennae then gradually incurved to suture. Clypeus (Fig. 6) with median and lateral carinae distinct, length in midline shorter than frons. Rostrum reaching base of hind femurs, with length of subapical segment shorter than apical segment. Antenna (Figs 2, 4, 6-7) subglobose, not sunk in a depression. Ocelli (Figs 2, 4, 7) separated from eyes. Eyes (Figs 2, 4, 7) almost not excavate beneath. Pronotum (Figs 1, 3, 5) with length in midline as long as length behind eyes, with anterior margin roundly convex, posterior margin subangularly excavate about 130 degrees; median carina distinct, lateral carinae straight, posteriorly diverging and reaching hind margin, with length 1.5 times to length of median carina; lateral lobe slightly inclined antero-ventrally. Mesonotum (Figs 1, 3, 5) with three carinae distinctly, length in midline longer than vertex and pronotum combined, area between lateral carinae with one transverse callus at anterior third. Forewing (Figs 1-4, 8) with costal margin slightly convex; apical margin roundly convex; posterior margin angularly excavate (160 degrees) at apex of clavus; vein Cu1 forking slightly basally of ScP+R fork, equal to level of veins Pcu and A1 fork, vein MP forking nearly level of nodal line, clavus terminating slightly distally of middle. Hindwing (Fig. 9) Cu with two branches, partly fused with M3+4, CuP and Pcu single, A1 two branched, A2 not reaching wing margin and enlarged apically. Post-tibiae with one lateral spine basalto middle.

Male genitalia.

Each side of anal segment (Figs 10-11) with a strong spinous process, directed ventrally. Pygofer (Fig. 11) in lateral view with dorsal margin distinctly shorter than ventral margin, medioventral process (Fig. 12) broad and short, lateroapical margin produced in a small sharp process. Genital style (Fig. 13) without a finger-like process from near the base of dorsal margin, only a larger process rising from near middle of dorsal margin. Aedeagus with phallobase (Figs 14-15) sheath-shaped, asymmetrical, apical half branched into several long processes which narrowing apically and with apexes sharp. Aedeagal appendages (Figs 14-15) relatively straight, clearly exceeding the apical margin of phallobase.

Etymology.

The genus name, which is masculine, is a combination of " Magadha " (name of the related genus) and “-ideus” (similar to), which indicates the new genus is similar to the genus Magadha .

Host plant.

Unknown.

Distribution.

Oriental region (South China).

Key to species of Magadhaideus Long & Chen, gen. n.