A new Species of Erythroneura (Homoptera, Jassoidea) injurious to French Beans (Phaseolus vulgaris) in the Sudan

Extract

Erythroneura lubiae, sp. n.

Colour :—Pale green covered with a whitish pruinosity ; middle of pronotum and apices of tibiae, tarsi and ovipositor of ♀, slightly darker green ; a spot at middle of apical margin of pronotum and a broad stripe down middle two-thirds of scutellum, opaque white. Eyes dark greenish grey, apex of rostrum brown. In some female specimens the head and pronotum are uniformly greenish yellow and the white spots are obsolete. Tegmina more or less hyaline, the veins, clavus, brachial and suprabrachial areas, sub-opaque, suffused with pale green or greenish yellow ; the membrane infuscate towards apex and along inner margin ; claval commissure very narrowly and extreme inner margin of membrane beyond apex of clavus, dark brown ; costal plaque distinct, pallid. Wings whitish hyaline, faintly infuscate towards apex, veins white. Abdomen pale whitish green, basal tergite and anal segment greenish yellow. Tibial spines white.

Structure :—Ocelli absent ; head as wide across eyes as pronotum across humeral angles (47 : 47) ; seen from above slightly less than half as long in middle as wide between eyes (13 : 27), only slightly longer than length at eye (13 : 11) ; face (including clypeus) about 2·25 times as long as wide between antennae (50 : 22) ; frons three times as long as clypeus (36 : 12), which is apically sub-angulate. Pronotum about half as long as wide across humeral angles (23 : 47).