Xyloctonus opacus Schedl, 1957

Jordal, Bjarte H., 2024, Integrated taxonomy, biology and biogeography of the Afrotropical genus Xyloctonus (Coleoptera, Curculionidae, Scolytinae), Deutsche Entomologische Zeitschrift 71 (1), pp. 67-84 : 67

Xyloctonus opacus Schedl, 1957

Figs 16 , 19 , 22

Xyloctonus opacus Schedl, 1957: 43.

Type material.

Holotype: Ruanda [Rwanda], Ihembe, 29-VIII-1952, Dr. Schedl [RMCA].

Diagnosis.

Length 1.9-2.1 mm, 1.9-2.0 × as long as wide, colour black, dull; antennal club with one visible procurved suture; frons finely pubescent; anterior margin of pronotum with two raised teeth; elytral interstriae 1-3 continue to posterior elytral margin, interstriae 4-8 terminate in the transverse interstriae 9 that merge with apical margin at level of interstriae 3; scutellar shield rough, weakly impressed in middle; elytral suture straight (mesal locking mechanism normal).

Distribution.

Rwanda.

Previous reports from Madagascar ( Schedl 1977) are X. biseriatus [NHMW].

Biology.

Collected from Chrysophyllum ( Sapotaceae ) branches about 2-8 cm in diameter ( Schedl 1961b). Egg tunnels were cut transversely to the grain and the number of larvae ranged between 14 and 44 (n = 4).

Figures

Figures 16 - 24. Dorsal, lateral and front view of holotype of X. opacus (16, 19, 22); paratype of X. punctipennis (17, 20, 23); X. biseriatus (18, 21, 24).