Clada (Clada) dimbyi, Zahradnik, Petr & ryzna, Milos, 2018

Zahradnik, Petr & ryzna, Milos, 2018, Nine new species of Clada from Madagascar (Coleoptera, Ptinidae), ZooKeys 806, pp. 121-140 : 121

Clada (Clada) dimbyi sp. n. Figs 2, 11, 20, 29

Type material.

Holotype male: Madagascar, Mahajanga prov., Mahajamba riv., Ampatika env., 17.-19.xi.1995, I. Jeniš lgt. (FGMRI). Paratype(1): 1 male, Madagascar, Mahajanga prov., Ambodimanga, Ankolia riv., 14.-15.xi.1995, J. Stolarczyk lgt. (FGMRI).

Differential diagnosis.

The species is similar to C. (C.) humeralis Pic, 1926, but differs by the lighter colour of the elytra and absence of lighter coloured humeri. Fully differs by shape of the aedeagus. Fully differs by shape of the aedeagus. For differences from other Madagascan species, see key.

Description.

Male (holotype). Elongate-elliptical, transversally convex. Body length 5.9 mm, maximum width 2.9 mm (Figure 2). Ratio length:width of elytra 1.6. Body light brown, head and pronotum brown, antennae and legs partly darker. Pubescence white.

Head matt-shiny, with double punctation - one coarse, dense, umbilicate, distance between punctures approximately the same as their diameter; other is very fine, punctures almost touching. Pubescence recumbent or semi-erect, long, mostly inclined forwards, partly to centre of head, on vertex backwards. Clypeus with shallow, transverse depression. Eyes large, globular with short erect sparse pubescence. Frons twice as wide as diameters of eye, in dorsal view. Antennae consisting of eleven antennomeres; 3rd to 10th pectinate (Figure 20). 1st antennomere robust, twice as long as wide; 2nd smallest, only 1/3 as long as 1st, as long as wide, the same width as 1st. 3rd 1.3 times as wide as long; 4th and 5th 2.1 times as wide as long; 6th, 7th and 9th 1.9 times as wide as long; 8th twice wider as long; 10th 1.6 times as wide as long. Apical antennomere longest, oblong oval, 5.7 times as long as wide. All antennomeres with short recumbent pubescence, only 1st and 2nd with a few long semi-erect setae. Apical maxillary palpomere long, spindle shaped.

Pronotum convex, matt-shiny, transverse (ratio length:width of pronotum 0.8); widest in posterior 2/3. Base of pronotum finely bordered. Middle of pronotum at base with a small blunt swelling, posteriorly slightly sharpened. Surface of pronotum with coarse, dense, umbilicate punctation, distance between punctures smaller than their diameter. Pubescence long, sparse, recumbent, inclined more or less forwards.

Scutellum large, longitudinally trapezoidal, 1.2 times as long as wide, densely recumbent pubescence, inclined backwards, surface shinning with fine, dense punctures.

Elytra oval, transversally convex, shiny, with distinct humeri. Each elytron with five very fine costae. Surface of elytra irregularly punctated with punctures of different diameters, coarse, dense, umbilicate. Pubescence relatively sparse, recumbent, on sides also semi-erect, inclined backwards. Posterior margin of each elytron with approximately 25 very small teeth.

Legs stout, with short and dense recumbent pubescence. Mesotibia on the apex with short forked projection. All tarsi robust, the same length as tibia. 1st metatarsomere as long as 2nd and 3rd together, the same width, slightly emarginate on top, 4th slightly shorter than previous, more emarginate, almost to 2/3 of their length. 5th the same length as 3rd and 4th together, rectangular, wider on the top, with two large claws, without teeth.

For aedeagus see Figure 29.

Female. Unknown.

Variability.

Without visible variability.

Name derivation.

Patronymic, dedicated to Dr Dimby Raharinjanahary from Madagascar National Parks, Antananarivo ( Chargé des Bases de données de suivibiodiversité et recherche).

Biology.

Unknown.

Distribution.

This species is found in the northwestern part of Madagascar (Figure 11).