Myllocerus viridanus

Myllocerus viridanus (Fabricius, 1775) Curculio viridanus Fabricius, 1775: 155. Type locality: India-Tranquebar; Type repository: Zoological Museum, University of Copenhagen. Type not examined. = Myllocerus angustifrons Faust, 1897: 356; Marshall 1916: 301; Ramamurthy and Ghai 1988: 414. Type locality: India; Type repository: State Museum of Zoology, Dresden. Material examined. No specimens examined; data based on published records. Diagnosis. Body covered with dense, uniform light-green scales, sometimes varying to pale greenish white; in paler specimens a chalky-white efflorescence may be present. Head tinged with yellow, bearing metallic green scales at apex of rostrum; narrowed anteriorly, with straight sides. Eyes dorsal causing external margins of both eyes plainly visible from above at same time and converging slightly anteriorly, frons with a median, longitudinal impression. Rostrum evidently longer, broader than head; sides straight; scrobes entirely dorsal, interscrobal distance slightly broader than interocular distance. A low, rounded longitudinal ridge originates from anteroventral margin of eye and curves indistinctly inward near mid-length. Antennae with funicular antennomeres 1 and 2 elongate and subequal; funicular antennomere 3 slightly longer than 4, and funicular antennomere 4 longer than 5. Prothorax subconical, widest posteriorly and strongly narrowed anteriorly; sides straight; posterior margin deeply bisinuate; dorsal surface bearing deep, well-separated punctures concealed by scaling. Elytra almost parallel-sided from elytral humeri to posterior to mid-length in ♂, gradually rounded toward the apex and with laterally prominent elytral humeri in ♀; vestiture with scales on elytral interstriae more oval than circular. Legs black with green scaling; femora bidentate, outer tooth consistently small (Marshall 1916). Remarks. For comparison with M. delicatulus Boheman, 1842, see above. Plant association. Oryza sativa (Poaceae), Corchorus spp. (Malvaceae), Arachis hypogaea (Fabaceae), Ricinus communis (Euphorbiaceae), Linum usitatissimum (Linaceae), Helianthus annuus (Asteraceae), Ipomoea batatas (Convolvulaceae), Trichosanthes cucumerina (Cucurbitaceae), Lablab purpureus (Fabaceae), Abelmoschus esculentus (Malvaceae), Citrus limon (Rutaceae), Mangifera indica (Anacardiaceae), Psidium guajava (Myrtaceae), Carica papaya (Caricaceae), Manilkara zapota (Sapotaceae), Ficus carica (Moraceae), Prunus persica (Rosaceae), Theobroma cacao (Malvaceae), Camellia sinensis (Theaceae), Rosa spp. (Rosaceae), Indigofera spp. (Fabaceae), Plumbago zeylanica (Plumbaginaceae), Sesbania spp. (Fabaceae), Tectona grandis (Lamiaceae), Eucalyptus spp. (Myrtaceae), Acalypha spp. (Euphorbiaceae), Lantana camara (Verbenaceae); attracted to light (Ramamurthy and Ghai 1988). Distribution. Sri Lanka, India.