Aid to the determination of the described species of the Coleopterous genus Helota Mc L., and description of a new species
Zoologische Mededelingen , Volume 1 - Issue 15 p. 229- 240
INDOMALAYAN SPECIES. A Base of elytra coloured as apex. B Elytra with four convex fulvous spots. C Pronotum rugose, with raised patches. D Elytra very regularly punctate-striate all over. E Fulvous elytral spots large or moderately large. F The black colour at the tibiae restricted to the extreme base and apex. G Antennae dark pitchy. Upper surface and elytral epipleurae bright metallic green . . . Vigorsi Mc L., Vigorsi sumatrensis Rits. and Vigorsi borneensis Rits. G' Antennae pale fulvous. H Upper surface and elytral epipleurae metallic green with golden hue . . . . . . . . scintillans Olliff. H' Upper surface and elytral epipleurae dark greenish purple . . . . . . . . . . . . Pasteuri Rits. F' The black colour at the tibiae more extensive, leaving only one third of the tibiae (a ring in the middle) testaceous . . . . . . . Rouyeri Rits. E' Fulvous elytral spots small. I Upper surface and elytral epipleurae bronze coloured. J Sides of pronotum coloured as the disk. K Apical half of antennae dark pitchy. L Elytral interstices but slightly convex . . . Vandepolli Rits.
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Ritsema, C. (1915). Aid to the determination of the described species of the Coleopterous genus Helota Mc L., and description of a new species. Zoologische Mededelingen, 1(15), 229–240.