Ctonoxylon acuminatum Schedl

Figs 75, 77, 79

Ctonoxylon acuminatum Schedl, 1957: 45.

Type material.

Holotype, male: [Democratic Republic of the] Congo Belge, Yangambi, 9. IX. 1952, ex Clitandra staudtii, KE Schedl, leg. [RMCA, paratype in NHMW].

Diagnosis.

Length 2.6 mm. 2.3 × as long as broad; colour pale brown. Male frons reticulate with short fine setae; eye parts separated by the size of upper half; anterior lateral margin of prothorax with obtuse eye scraper, from this point to coxa with elongated groove; propleural pit present; elytral suture slightly buckled at midlength; apex entire, slightly extended and upcurved in lateral view; interstrial vestiture of regular rows of long bristle-like setae.

Biology.

One host plant is known, Orthopichonia visciflua (K. Schum. ex Hallier f.) Vonk ( Apocynaceae), a thin climbing plant (Schedl 1961).

Comments.

Superficially similar to C. kivuensis but has shorter setae and the elytral apex in lateral view has a slightly curved extension (Fig. 77).