Two new Oedanomerus species from Zimbabwe (Coleoptera: Scarabaeidae: Melolonthinae: Tanyproctini)
Author
Sehnal, Richard
text
Zootaxa
2018
2018-02-05
4377
4
593
600
journal article
30848
10.11646/zootaxa.4377.4.10
e01a3a46-9e8c-4866-b9f7-53f9ec24ba66
1175-5326
1165782
EF257818-5489-4D0D-A566-93A38568482F
Oedanomerus lupanus
Sehnal
,
new species
(
Figs. 1B
,
2B
,
3B
,
4B, 4F
,
5K
)
Type
locality.
Zimbabwe
, [
Matabeleland
North Province
],
Hwange
, Lupane.
Type
material.
Holotype
and two
paratypes
(all males): “
ZIMBABWE
W | SE Hwange |
40 km
NW of Lupane |
15. 11. 2014
Snížek [white label, printed]”.
Type
depository
.
Holotype
in Národní muzeum
Praha
,
Czech Republic
,
paratypes
in
Richard Sehnal
collection,
Velenice
,
Czech Republic
.
Description of
holotype
(male).
Body length
7.1 mm
. Body elongate. Head, pronotum and scutellum black (
Fig. 1B
); antennae bicolorous, antennal club pale brown, antennal shaft black (
Fig. 2B
); elytra chesnut brown with black suture and humeral umbones (
Fig. 1B
). Pro-, meso- and metatibiae brown, protarsi testaceous, meso- and metatarsi dark brown. Abdomen brownish black.
Head. Clypeus pointed; clypeal carina broad, prominent; clypeal plate vertical; shallowly punctate; each puncture bearing a long, erect, posteriorly inclined, yellow macrosetae (
Fig. 2B
). Labrum reduced, triangular; lobes rounded. Frons deeply rugose; edge of clypeus strongly punctate; each puncture bearing a long, semierect, posteriorly inclined, yellow macroseta.
Eyes large, exceeding genae externally in dorsal view. Genae rugopunctate, with group of long macrosetae. Antennae (
Fig. 2B
) with eight antennomeres; antennomeres 6–8 forming long, straight club at least 1.7x times longer than antennal shaft; antennomeres 1–5 with sparse, long macrosetae; antennal club completely densely punctate, without smooth areas. Pedicel bulbous and as long as antennomere 3. Terminal maxillary palpomere elongate, longer than palpomeres 2 and 3 combined; sub-basally with apically pointed, flat, oval alutaceous area tapering toward apex.
Pronotum (
Fig. 2B
) weakly convex, approximately tetragonal, 1.28x times wider than long, widest approximately at middle; margin nearly completely bordered, anterior border broadly interrupted medially. Anterior and posterior angles broadly rounded, poorly defined. Surface with very long, yellow macrosetae, basal border with white macrosetae; disc shallowly punctate and wrinkled, posterior angles without punctures.
Scutellum slightly longer than wide, matte, completly shallowly punctate, with long, fine macorseta, margins broadly arcuate.
Elytra moderately convex, narrow. Disc wrinkled and punctate; punctures evenly distributed, separated by more than
2x
the puncture diameter; macrosetae short and denser than on pronotum, inclined posteriorly, absent from distinct humeri. Sides punctate, with lateral margins and apices diffusely lighter-colored than disc.
Macropterous.
Legs. All femora shiny and irregularly, coarsely punctate; yellow macrosetae short and white macrosetae long. Protibia tridentate (
Fig. 4F
). Claws simple. Metafemora chesnut brown with intermixed long macrosetae and long macrosetae. Mesotibiae moderately expanded apically. Metatibiae black, strongly expanded apically, with one oblique carina externally; carina and apical edge with row of stout, yellow macrosetae; terminal calcars stout, long, lower calcar longer than upper calcar (
Fig. 4B
). Pro- and mesotarsomeres without patches of short, dense macrosetae; metatarsomeres ventrally covered with long, sparse macrosetae.
Abdominal sternites brownish black, with yellowish-white, recumbent macrosetae. Pygidium chesnut brown, flat, finely punctate, with very long, white macrosetae.
Male genitalia (
Fig. 3B
). Aedeagus symmetrical, parameres slender, long.
Variability in males.
Paratypes
somewhat variable in body length (
7.3–7.4 mm
), slightly variable in dorsal punctation density and length and distribution of macrosetae. Color as in
holotype
.
Female.
Unknown.
Diagnosis.
Based on characters stated in
Evans (1987)
, the new species differs from its congeners by the following combination of characters: smaller and narrow species; antennae with eight antennomeres; tridentate protibia; clypeus pointed apically; clypeal carina broad, prominent; posterior pronotal angles without punctures, basal border with very long, white macrosetae; head and pronotum black, elytra chestnut brown with black suture and humeral umbones; metafemur brown. Generally, the new species is similar to
O
.
pilosus
and
O
.
bidentatus
new species
.
Oedanomerus pilosus
has head and pronotum piceous; anterior clypeal margin broadly rounded, clypeal subapical carina long; smaller body; and different shape of aedeagus (
Evans 1987
).
Oedanomerus bidentatus
new species
has elytra black with brownish-black margins; narrower clypeus; bidentate protibia; smaller body; and differently shaped aedeagus and antennal club (
Figs. 1A
,
2A
,
3A
,
4A, 4E
).