Revision of the checkered beetle genus Erymanthus Spinola, 1841 (Coleoptera, Cleridae, Clerinae)
Author
Gerstmeier, Roland
Author
Salvamoser, Max
text
Zootaxa
2014
3755
6
501
548
journal article
46565
10.11646/zootaxa.3755.6.1
904d3172-8436-4deb-8595-175564429d44
1175-5326
251514
A6FB3A63-16CB-429D-BD71-40171B2E54F2
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.