Erymanthus testaceus Pic, 1950

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

Erymanthus testaceus Pic, 1950

( Figs 32–33 , 41 B)

Pic 1950: 159.

Specimens examined: Lectotype (designated here): Coll. Mus. Congo, Mayidi, -1942, Rév. P. Van Eyen, Holotypus testaceus Pic, R. Det. DD. 5621, Erymanthus testaceus nsp (MRAC). Paralectotypes (designated here): Coll. Mus. Congo, Bas– Congo –Mayidi, 1942, R. P. Van Eyen, R. Det. I. 5763, Erymanthus testaceus Pic (MRAC). Coll. Mus. Congo, Mayidi, -1942, Rév. P. Van Eyen, Paratypus, R. Det. EE. 5621 (MRAC). Coll. Mus. Congo, Mayidi, 1942, Rév. P. Van Eyen, Syntype, Muséum Paris, Coll. M. Pic, testaceus nm (MNHN). Coll. Mus. Congo, Mayidi, 1942, Rév. P. Van Eyen, Syntype, Muséum Paris, Coll. M. Pic, PLT ♂ (MNHN).

Comment on the type specimens: As Pic (1950) made no reference to type specimens in his description, all ‚type‘ material should be treated as syntypes ( ICZN 1999: Article 73.2) and, as such, are available for lectotype designation ( ICZN 1999: Article 74.1). We have designated the specimen from MRAC as lectotype and the other specimens from MNHN and MRAC as paralectotypes.

Others: Tchibanga ( Gabon), G. Le Testu, Erymanthus sp. ( MNHN). Dsoumouna, 19-10-71, Recollem J. P. G. Rilloi ( MNHN). acq. Donckier de Donceel, 1923, Cameroun, M. Pic vidit 1940 ( RMNH).

Diagnosis: Erymanthus testaceus can be confused with E. transversopustulatus n. sp. and E. gemmatus . In Erymanthus gemmatus the gibbosities A, C and D has black setae. Erymanthus transversopustulatus n. sp. is 18– 20mm long and has black setae on all gibbosities. Erymanthus testaceus is recognizable by its yellow to light brown pronotum without any maculation and the white setae on gibbosities C and D.

Length: (8 specimens measured) 11–13mm (average 12.38mm).

Head: Yellow to light brown; frontal umbo with indistinct grooves; with dense fine punctation; with flavous anteriorly directed pilosity and testaceous pilosity laterally; antennae yellowish-brown.

Pronotum: Pronotal length to width ratio 1.06:1 to 1.12:1 (average 1.09:1); yellow to light brown; gibbosities inconspicuous, pronotal groove clearly visible; scattered with fine punctation and testaceous pilosity.

Scutellum: Black; vested with white setae.

Elytra: Elytral length to width ratio 1.86:1 to 1.96:1 (average 1.89:1); yellow to light brown, sometimes with 2–4 black spots; dense punctation in distinct rows, interstices width half to double diameter of punctation; basal 3– 4 rows of punctation rasp-like, some punctation merges longitudinally; scattered with flavous pilosity; many gibbosities in apical half, gibbosities C and D sometimes with white setal tuft, gibbosities A and B with dense fine punctation, gibbosity E with black setal tuft.

Legs: Yellow to light brown, meso- and metafemora black basally, meso- and metatibiae black distally; with long flavous pilosity, especially on tibiae.

Lower surface: Black, prothorax pale; scattered with white pilosity.

Male genitalia, pygidium, ventrite VI: Tips of tegminal lobes blunt, tegminal lobes one seventh length of tegmen; tegminal struts broadened until three-tenths length and tapering lanceolate until four-fifths length, last fifth narrow; phallic tip blunt; posterior side of pygidium rounded; processes of ventrite VI pointed.

Distribution: Cameroon, Gabon, Congo.

Seasonal occurrence: Collected in October.

Figures

FIGURE 32. Erymanthus testaceus: (A) Aedeagus ventral, (B) Phallus lateral, (C) Tegmen dorsal, (D) Spicular fork, (E) Pygidium, (F) Ventrite VI; (scale bars 1 mm).

FIGURE 33. Distribution of Erymanthus testaceus.

FIGURE 41. (A) Erymanthus semirufus ab., (B) Erymanthus testaceus, (C) Erymanthus transversopustulatus n. sp., (D) Erymanthus variolatus, (E) Erymanthus vesuvioides; (scale bars 5 mm).