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Description of Hilda cameroonensis sp.n. (Hemiptera: Tettigometridae) new species of Hildinae associated with Vernonia amygdalina Delile (Asteraceae) from Cameroon

By: Joseph Lebel Tamesse, Lidy Flore Dongmo

Key Words: Vernonia amygdalina, Tettigometridae, Hilda kirkaldy, Cameroon

J. Bio. Env. Sci. 9(2), 156-164, August 2016.

Abstract

Vernonia amygdalina Del., commonly called bitter leaf, is a perennial schrub that belongs to the family Asteraceae and grows throughout tropical Africa. It is probably the most used medicinal plant in the genus Vernonia. Extracts of the plant have been used in various folk medicines’ as remedies against helminthic, protozoal and bacterial infections with scientific support for these claims. The leaves suffered serious damages caused by insect pests. In Cameroon, a new species of the genus Hilda, is reported for the first time on Vernonia amygdalina and cause the leaves shrivelled. All instars nymphs and adults of this new species are described: eggs have a peduncle in one extremity and their median portion is convex; for the fifth instar larval, metatibia of metathoracic leg bearing nine spines in their ventral view; For the adult, antenna are type IV, head and tegmina structure are similar as the same structure described for all Hildiniens species, metathoracic leg have eight spurs in distal end of tibiae, seven spurs in first segment of tarsus, two spurs in second and, third segments has two claws and arolium; male genitalia so complex, with anal tube short, edeagus long tubulous and devided into two parts, and pygophor wear silks in their apical ends. These characters permit us to identify this new specie in the genus Hilda, species Hilda cameroonensis sp.n.

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