Andersonoplatus rosalesi, Linzmeier, Adelita M. & Konstantinov, Alexander S., 2018

Linzmeier, Adelita M. & Konstantinov, Alexander S., 2018, Andersonoplatus, a new, remarkable leaf litter inhabiting genus of Monoplatina (Coleoptera, Chrysomelidae, Galerucinae, Alticini), ZooKeys 744, pp. 79-138 : 102-103

Andersonoplatus rosalesi sp. n. Figs 30, 31

Description.

Body length 2.05-2.16 mm, width 1.08-1.18 mm, shiny, pilose, with semi-erect hairs, moderately convex in lateral view. Color castaneous.

Head (Fig. 30D): slightly convex in lateral view, shiny, generally reticulated, with sparse pilosity. Frons and vertex forming nearly a 135° angle in lateral view. Antennal callus delimited from vertex by deep and slightly curved upward supracalinal sulcus. Antennal callus slightly raised, surface even, with no or two punctures, if bearing setae, they are short. Orbital sulcus shallow. Supraorbital sulcus absent. Suprafrontal and frontolateral sulci shallow. Frontogenal suture deep. Orbit narrow, as wide as transverse diameter of antennal socket. Interantennal space narrower than transverse diameter of eye and as wide as transverse diameter of antennal socket. Frontal ridge short and narrow. Antennae filiform; antennomeres III-XI similar in length, the last five antennomeres slightly wider than preceding ones.

Thorax: pronotum (Fig. 30A, B) slightly trapezoidal, almost quadrate, narrower than elytra. Anterior margin wider than posterior, posterior margin slightly concave, lateral margin almost straight. Anterior angles pointed outwards. Surface reticulated, punctuated, pilose, densely covered with well-defined punctures, diameter of which larger than distance between punctures. Pronotal disc weakly raised. Scutellum rounded, shorter than wide. Prosternal intercoxal process narrow. Posterior end nearly twice as wide as middle. Elytra not fused. Elytral surface shiny, with white, semi-erect hairs, deeply punctate (Fig. 30A, B). Punctures forming nine striae, the ninth stria is overlapping marginal one. Interspaces very convex. Second and third striae reaching elytral base. Third and fourth striae merge at apical 2/3rd. Epipleura slightly convex, pilose, nearly vertical, slightly narrowed at elytral apex. Metafemur greatly enlarged, 1.10 times longer than metatibia. Claws appendiculate and long.

Male genitalia (Fig. 31A): ventral side flat apically, with longitudinal impression basally; apical denticle poorly developed, apex bent ventrally.

Female genitalia (Fig. 31 B–E): tignum long, narrow, slightly bent, with central canal; anterior sclerotization widening gradually with slightly curved sides and convex apex, posterior sclerotization poorly delineated, wide, wider than anterior (Fig. 31E). Vaginal palpi elongate, basally strongly sclerotized, each with approximately eight setae at apex (Fig. 31B). Palpi pointed at apex, enlarged at last third but thinned at apex, situated close together and merged anteriorly for more than half of their length. Spermatheca curved, with receptacle and pump not differentiated from each other, receptacle longer than pump. Apex of pump with spoon-like projection. Spermathecal duct short, widest at base, without coils, making long and narrow loop (Fig. 31D).

Type material.

Holotype, ♂. VENEZUELA: Merida/ 34km N.W. Merida, Finca/ 'Fundo La Trinidad’, 2350m/ 08°37'00"N, 71°20'12"W / 22.V.1998-027C, R.Anderson/ montane forest litter (MIZA). Paratypes (5♂ USNM, CMNC, 1♀ USNM). Same labels as holotype.

Etymology.

We name this species after Carlos Rosales of Museo del Instituto de Zoologia, UCV, Maracay, Venezuela, a fellow coleopterist who contributed greatly to our knowledge of beetles of Venezuela.

Differential diagnosis.

Andersonoplatus rosalesi is similar to A. andersoni , A. flavus and A. sanare and can be separated from them based on the following characters: pronotal surface densely covered with well-defined punctures, diameter of which larger than distance between punctures (Fig. 30A) and second elytral stria reaching base of elytron (Fig. 30A).