Erymanthus semirufus Kuwert, 1893

Gerstmeier, Roland & Salvamoser, Max, 2014, Revision of the checkered beetle genus Erymanthus Spinola, 1841 (Coleoptera, Cleridae, Clerinae), Zootaxa 3755 (6), pp. 501-548 : 534-536

Erymanthus semirufus Kuwert, 1893 , n.stat.

( Figs 30–31 , 40 F, 41A)

Erymanthus horridus var. semirufus Kuwert, 1893 Kuwert 1893: 479 .

Specimens examined: Lectotype (designated here): Kuilu, Fr. Congo, Mocquerys, 1892, Ex Musaeo W. Rothschild 1899, Type, v. semirufus Kuw.I fut. 12.lg. XXXVII 1893 p 479! Type! horridus semirufus Type ♀, Muséum Paris 1952, Coll. R. Oberthúr (MNHN). Paralectotypes (designated here): Kuilu, Fr. Congo, Mocquerys, 1892, Ex Musaeo W. Rothschild 1899, Type Erymanthus horridus Westw. var. semirufus Kuw. Cotype , Erymanthus horridus semirufus Kuwert, 1893 ZMAN type 2259.1 (RMNH). Kuilu, Fr. Congo, Mocquerys, 1892, Ex Musaeo W. Rothschild 1899, horridus Hoju Congo, horridus semirufus ♀, Muséum Paris 1952, Coll. R. Oberthúr (MNHN). Kuilu, Fr. Congo, Mocquerys, 1892, horridus semirufus Kuw. (MNHN). Kuilu, Fr. Congo, Mocquerys, 1892, (MNHN). Kuilu, Fr. Congo, Mocquerys, 1892 (MNHN).

Comment on type specimens: Kuwert (1893: 479) wrote about several specimens with different coloration to E. horridus though did not designate one as holotype, therefore all type specimens should be treated as syntypes ( ICZN 1999: Article 73.2) and, as such, are available for lectotype designation ( ICZN 1999: Article 74.1).

Others: Cameroon, Bitye la River, 3000 feet, Muséum Paris 1952, Coll. R. Oberthúr ( MNHN). Congo, Muséum Paris, Coll. Sédillot 1935 ( MNHN). Mt Ngoaékélé (1125m), Cameroon, 25-V-1976, Ph. Daige ( MNHN). Kamerun, Mungo ( ZMB). Musée du Congo, Kasai Kondue, Leohard, Erymanthus variolatus Brême, R. Det. E 405 ( MRAC). Cameroun Centre, v.1996, lgt. Desfontaine, Jakub Rolčík Collection Prague ( JRCP). Cameroon centr., V.96 ( RGCM).

Diagnosis: Erymanthus semirufus is clearly recognizable by its characteristic elytral coloration.

Length: (13 specimens measured) 17–20mm (average 18.62mm).

Head: Testaceous to dark brown, antennae from antennomere A2 or A3 onwards increasingly darker to black; frontal umbo with inconstant grooves; with isolated flavous and black pilosity; with very dense fine punctation.

Pronotum: Pronotal length to width ratio 1.02:1 to 1.13:1 (average 1.09:1); light brown; gibbosities elevated, with transverse wrinkles around pronotal groove; with fine punctation and flavous pilosity.

Scutellum: Testaceous to black; vested with flavotestacous setae.

Elytra: Elytral length to width ratio 1.89:1 to 2.14:1 (average 2.01:1); basal half black with a transverse flavotestaceous spot in the middle, apical half flavotestaceous; punctation circular to elongate-ovate, shoulder with rasp-like punctation, width of interstices variable, irregularly distributed; with isolated black pilosity, in posterior half with dense white pilosity; all gibbosities with white setal tuft.

Legs: Femora at least distally flavotestaceous, remainder black.

Lower surface: Black, abdomen flavotestaceous; with white pilosity.

Male genitalia, pygidium, ventrite VI: Tips of tegminal lobes blunt, tegminal lobes very short; tegminal struts broadened until three-eighths length and tapering lanceolate until tip; posterior side of pygidium rounded; processes of ventrite VI long but rather blunt.

Distribution: Cameroon, Congo, DR Congo.

Seasonal occurrence: Collected in May.

Figures

FIGURE 30. Erymanthus semirufus: (A) Aedeagus ventral, (B) Phallus lateral, (C) Tegmen dorsal, (D) Spicular fork, (E) Pygidium, (F) Ventrite VI; (scale bar 1 mm).

FIGURE 31. Distribution of Erymanthus semirufus.

FIGURE 40. (A) Erymanthus horridus, (B) Erymanthus maculaticeps, (C) Erymanthus melanurus, (D) Erymanthus pustulosus, (E) Erymanthus revoili, (F) Erymanthus semirufus; (scale bars 5 mm).