Magnentiini Linnavuori, 1978

Zahniser, James N. & Dietrich, Chris H., 2013, A review of the tribes of Deltocephalinae (Hemiptera: Auchenorrhyncha: Cicadellidae), European Journal of Taxonomy 45, pp. 1-211 : 113-116

Magnentiini Linnavuori, 1978

Fig. 35

Type genus: Magnentius Singh-Pruthi, 1930 .

Diagnosis

Magnentiini are medium sized black, coarsely punctate, wedge-shaped leafhoppers. They can be identified by their robust appearance, coarsely punctate texture of the pronotum and face, hirsute body and face, crown very short, pronotum produced anteriorly with apex exceeding eyes in dorsal view, ocelli distant from eyes, antennal ledge distinct, forewing appendix large, and forewing veins raised.

Description

HEAD. Head subequal to or wider than pronotum. Discal portion of crown punctate. Anterior margin of head punctate. Frontoclypeus not tumid or tumid, texture punctate. Clypellus parallel-sided, tapering apically, or widening apically; apex following or slightly surpassing normal curve of gena. Lorum subequal to or wider than clypellus near base. Antennal bases near middle or posteroventral (lower) corners of eyes. Antennae short, less than 1.5 x width of head. Gena not or slightly incised laterally; hirsute, with many fine hairs (difficult to interpret presence/absence of fine erect seta). Antennal ledges strongly developed, with distinct ledge. Ocelli present; distant from eyes; on face.

THORAX. Pronotum exceeding eyes anteriorly; lateral margin carinate; lateral margin shorter than basal width of eye.

WINGS. Forewing macropterous or submacropterous; appendix present, extending around wing apex; with 3 anteapical cells; veins distinctly raised; without reflexed costal veins; A1-A2 crossvein present; apical venation not highly reticulate.

LEGS. Profemur with AM1 seta only; intercalary row with one row of five or more fine setae; row AV with relatively long macrosetae. Protibia dorsal surface rounded, convex. Metafemur apex macrosetae 2+0. Metatarsomere I not expanded apically; plantar setae simple, tapered.

MALE GENITALIA. Valve articulated with pygofer; lateral margin short, articulating with pygofer at a point. Pygofer dorsoapical margin incised to near mid-length; basolateral membranous cleft present; macrosetae well differentiated into several rows. Subgenital plates free from each other; articulated with valve; macrosetae scattered, irregularly arranged. Style broadly bilobed basally, median anterior lobe pronounced. Basal processes of the aedeagus/connective absent. Aedeagus with single shaft and gonopore. Connective anterior arms somewhat divergent, Y -shaped; articulated with aedeagus.

FEMALE GENITALIA. Pygofer with macrosetae reduced or absent. Ovipositor not protruding far beyond pygofer apex. First valvula not strongly convex; dorsal sculpturing pattern strigate; sculpturing reaching dorsal margin; without distinctly delimited ventroapical sculpturing. Second valvula abruptly broadened medially or subapically; without dorsal median tooth; teeth on apical 1/3 or more; teeth small, regularly or irregularly shaped.

Geography and ecology

Distribution: Afrotropical and Oriental regions.

Remarks

Magnentiini contains 2 genera and 4 species. Although it bears a strong superficial resemblance to Nionia , it was transferred from Nioniinae to Deltocephalinae by Zahniser & Dietrich (2010) based on the deltocephaline-like male genitalia.

Magnentius was included here for the first time in analyses with molecular data. The placement in Deltocephalinae was supported in analyses here as it was resolved with moderate to strong branch support (MP BS=71, DI=7) as sister to three Penthimiini in MP analyses and sister to two Penthimiini in ML and Bayesian analyses with strong support (ML BS=93, PP=1.0, respectively). Some characters that are unusual among Deltocephalinae , including its robust appearance, ocelli distant from the eyes, strong antennal ledges, and forewing appendix extending around the wing apex, support its relationship to Penthimiini.

Selected references

Linnavuori (1978a).

Included genera

Magnentius Singh-Pruthi, 1930

Ndua Linnavuori, 1978

Figures

Fig. 35. Magnentiini. Magnentius clavatus Singh-Pruthi, 1930. A–I. Standard views (see Material & Methods).