Cryptorhopalum occultum, HávA, 2015

HávA, Jiří, 2015, Contribution to the knowledge of the Cryptorhopalum equisoleae species group, with description of Cryptorhopalum occultum sp. nov. from Argentina (Coleoptera ¡ Dermestidae ¡ Megatominae)., Arquivos Entomolóxicos 13, pp. 257-260 : 259-260

Cryptorhopalum occultum sp. nov. (Figs. 1-3) ( Map 5)

Type material. Holotype (♂) lABelled: “ Argentina, Entre Rios, Liebig, XII.1992 ” . Paratypes (2 ♀♀)¡ the same data as Holotype. Type material deposited in JHAC. The type specimens were labeled in Red, with A pRinted lABel BeARinG the text AS followS: “ HOLOTYPE (oR PARATYPE ReSpectively) Cryptorhopalum occultum sp. nov. Jiří HávA det. 2015” .

Description.

Male. Body small, convex and oval. Measurements (in mm)¡ TL 2.3, PL 0.7, PW 1.2, EL 1.6, EW 1.3. Whole integument deep black with a very slight metallic shine. Head dense and coarsely punctuated, with recumbent strong setation. Median frontal ocellus present. Eyes large without any visible microsetae. Maxillary palpi black, labial palpi black. Antennae entirely dark brown, with 11 antennomeres, antennal club with 3 antennomeres (Fig. 1). Pronotum with sparse, recumbent dark pubescence; finely and sparsely punctuated; continuously narrowed from the hind edges towards the head and conspicuously bulged in the front margin. Elytra with coarse punctuation, the sparse pubescence consists of dark, bended and more or less recumbent strong setation. Elytral humera with one small bumb. Epipleuron black. The small triangular scutellum naked and without punctuation. Abdominal ventrites densely and coarsely punctuated, deep black, with dark recumbent setation. Legs black to dark brown, the edges of the tibiae with a row of dark brown spines each, conspicuously bulged (Fig. 2). Aedeagus as in Fig. 3.

Female. Externally similar to male, but the last antennomere is smaller. TL 2.5-2.6, PL 0.7-0.8, PW 1.3-1.4, EL 1.9-2.0, EW 1.6-1.7. Sclerites in bursa copulatrix are small and narrow, without long tip (Fig. 4).

Differential diagnosis. The new species resembles very much Cryptorhopalum nevermanni Pic, 1936, C. equisoleae Sharp, 1902, C. rugulosum Pic, 1923, and C. punctifrons Herrmann, Háva & Kadej, 2015 because of the coarse and deep elytral punctuation in combination with the slight metallic shine of the elytra and the conspicuously bulged front tibiae. This combination separates these four taxa from all other species known so far within Cryptorhopalum Guérin-Méneville, 1838 AS “ C. equisoleae SpecieS GRoup”. The male of the new species differs by the structure of its antennae, male genitalia, and more narrowly bulged tibiae. The female of the new species differs by the form of the sclerites in the bursa copulatrix¡ 1) C. occultum sp. nov. - sclerites small and narrow, without long tip; 2) C. equisoleae - sclerites broad, with short tip; 3) C. nevermanni - sclerites broad, without long tip; 4) C. punctifrons - sclerites narrow, with very long tip.

1 3

Figs. 1-4.- Cryptorhopalum occultum sp. nov. 1.- Antenna of male. 2.- Tibiae. 3.- Aedeagus. Etymology. Latin adjective occultus (-m) = secret. 4.- Sclerites in bursa copulatrix.

Distribution. Argentina ¡ province of Entre Ríos.