Clada (Clada) barclayi, 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) barclayi sp. n. Figs 1, 10, 19a, b, 28

Type material.

Holotype male: Madagascar, Mahajanga prov., Ampatika env., Mahajamba riv., 17.-19.xi.1995, I. Jeniš lgt. (FGMRI). Paratype (1): 1 female, Madagascar, Morondava prov., Maronfandilia, 4.-5.xii.1995, J. Stolarczyk lgt. (FGMRI).

Differential diagnosis.

This species is similar to C. (C.) humeralis Pic, 1926, but differs by lighter colour of the elytra and missing lighter 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 5.8 mm, maximum width 2.2 mm (Figure 1). Ratio length:width of elytra 1.7. Body light brown, also antennae, maxillary and labial palpi and legs, only pronotum and head darker. Pubescence yellowish white.

Head matt shiny, with double punctation - first coarse, dense, umbilicate, distance between punctures approximately the same as their diameter; second is very fine, punctures almost touching. Pubescence recumbent or semi-erect, long, inclined more or less forwards. Anterior part of head with shallow deepening. Clypeus with shallow transverse depression. Eyes large, globular with short erect sparse pubescence. Frons 1.6 times as wide as diameter of eye, from dorsal view. Antennae consisting of eleven antennomeres, 3rd to 10th pectinate (Figure 19a). First antennomere robust, twice as long as wide; second smallest, one-half as long as first, almost as wide as long. 3rd 1.4 times as wide as long. 4th to 8th 2.1 as wide as long; 9th and 10th 1.7 times as wide as long. Apical antennomere longest, oblong oval, 5 times as long as wide. All antennomeres on margin with short erect dense setae. Apical maxillary palpomere long, spindle shaped.

Pronotum convex, matt shiny, rounded, transverse (ratio length:width of pronotum 0.8); widest on one half, but only slightly. Base of pronotum finely bordered. Middle of pronotum at base with small, blunt swelling, posteriorly slightly sharpened. Surface of pronotum with double punctation: one coarse, dense, umbilicate, distance between punctures approximately one-half their diameter; other one is very fine, punctures almost touching. Pubescence short, sparse, recumbent, inclined more or less forwards.

Scutellum almost triangular, narrow, 1.4 times as long as wide, dense recumbent pubescence, inclined backwards.

Elytra oval, transversally convex, shiny, with distinct humeri. Each elytron with five fine costae, almost invisible, but apex more distinct. Surface of elytra with double punctation: one coarse, dense, umbilicate, distance between punctures approximately the same as their diameter; the other one is very fine, punctures almost touching. Pubescence relatively sparse, recumbent or semi-erect, inclined backwards. Posterior margin of each elytron with approximately 25 small teeth.

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

For aedeagus see Figure 28.

Female. Habitually the same as male, only antennae serrate (Figure 19b). 1st antennomere robust with dense long erect hairs. 2nd small, as wide as 1st, half as long as previous, as long as wide. Antennomeres 3th to 10th serrate. 3rd and 4th twice longer than wide; 5th 2.3 longer than wide; 6th twice longer than wide; 7th 1.7 times longer than wide; 8th to 10th twice longer than wide. Apical antennomere longest, oblong oval, 3.3 times longer than wide. Body length 6.8 mm, maximum width 2.9 mm. Ratio length:width of elytra 1.8.

Name derivation.

Patronym, dedicated to our friend and colleague Maxwell VL Barclay (Natural History Museum, London).

Biology.

Unknown.

Distribution.

This species is found in the western part of Madagascar (Figure 10).