Descriptions of males of Tricliona melanura Lefèvre, 1890 and T. paksensis Kimoto et Gressitt, 1982 with an updated key to Tricliona Lefèvre, 1885 with punctured frons from Indochina (Coleoptera: Chrysomelidae: Eumolpinae)

Abstract

Formerly unknown males of Tricliona melanura Lefèvre, 1890 and T. paksensis Kimoto et Gressitt, 1982 are described. The photos of general view and of aedeagi dorsally and laterally are given for both species. Ratio of maximum width of head including eyes to minimum width of frons is 5.5 in male of T. melanura and 2.65 in T. paksensis. The sexual dimorphism in the species of Tricliona Lefèvre, 1885 is discussed. It appears in differences in width of the frons between the eyes and width of fore and middle tarsomeres. The key to South East Asian Tricliona performed earlier is modified from thesis 19 to thesis 24 taking into account characters of the males. Tricliona paksensis is recorded from Cambodia for the first time.

Keywords

• Coleoptera
• Chrysomelidae
• Eumolpinae
• Tricliona
• key
• males
• Indochina