Genus Eurynomeus Kirkaldy, 1906

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• Eurynomeus Kirkaldy, G.W. 1906. Leafhoppers and their natural enemies. Bulletin of the Hawaiian Sugar Planters' Association Experimental Station Entomological Series 1(9): 271-479 [422].

  Type species:

   Eurynomeus australiae Kirkaldy, 1906 by monotypy.

Introduction

A genus of five species, two from Maluku in Indonesia, two from the western Pacific and one from N. Queensland. The Australian species was figured by Kirkaldy (1907) and E. granulatus Muir, from Samoa, was figured by Fennah (1950). Fennah's figures are more usable.

Distribution

States

Queensland

IBRA and IMCRA regions

IBRA

Qld: Wet Tropics (WT)

Diagnosis

Head with eyes narrower than pronotum. Vertex not declivous, broader across base than longer in middle line (1.4:1), produced before eyes for about a fifth of their length, median carina present except at extreme apex, disk slightly depressed, anterior margin carinate, strongly convex, a more or less distinct carina on each side at level of anterior margin of eyes parallel to anterior margin of vertex, forming, except for a median interruption, two carinae between vertex and frons, lateral margins straight, diverging basad, posterior margin angulately excavate (about 120 degrees), frons moderately convex in profile, about as broad as long in middle line, widest part wider than base (1.6:1), basal margin truncate, median carina percurrent, lateral margins carinate, foliate laterad distally, convex, diverging to below level of antennae thence incurved to suture, disk of frons not impressed; clypeus about four-fifths of length of frons, medially and laterally carinate, rostrum with subapical segment about equal to apical, antennae subglobose, slightly sinken, ocelli touching eyes, eyes not or scarcely overlapping pronotum. Pronotum short, as long behind eyes as in middle line, anterior margin of disk convex-truncate, posterior margin angulately excavate (115 degrees), median carina present, an impression on disk on each side, lateral carinae of disk straight, each about twice as long as median carinae, attaining hind margin, pronotum laterad of disk not or scarcely inclined anteroventrally, ventral margin of lateral lobes oblique; mesonotum longer than vertex and pronotum together, tricarinate, pro-tibiae slightly longer than pro-femora with trochanters, post-tibiae with a single spine basad of middle. Tegmina fully three times as long as broad, costal margin slightly convex, sutural margin forming a re-entrant angle of 155 degrees at apex of clavus, Sc+R fork about level with Cu1 fork, both scarcely distad of union of claval veins, M forking at level of node, nine apical areoles distad of stigmal cell; clavus terminating distad of middle of tegmen. Wings with R two-branched, M two-branched, Cu1 three-branched. (Fennah 1950)

The genus is readily distinguishable by the shape of the frons, vertex, and pronotum, by the interrupted double carinae at the anterior margin of the vertex (though the anterior portions may be evanescent) and by the tegminal venation. (Fennah 1950)

ID Keys

Kirkaldy 1906: 417; Fennah 1950: 47

Diagnosis References

Fennah, R.G. 1950. A generic revision of the Achilidae (Homoptera: Fulgoroidea). Bulletin of the British Museum (Natural History) 1(1): 1-170 [120]

General References

Fennah, R.G. 1950. A generic revision of the Achilidae (Homoptera: Fulgoroidea). Bulletin of the British Museum (Natural History) 1(1): 1-170 [121]

Kirkaldy, G.W. 1907. Leafhoppers — Supplement (Hemiptera). Bulletin of the Hawaiian Sugar Planters' Association Experimental Station Entomological Series 3: 1-186

History of changes