Dung beetles (Scarabaeidae, Scarabaeinae) of the Foothills-Andean Forest strip of Villavicencio, Colombia
Author
Cárdenas-Bautista, Johann Stephens
Author
Parada-Alfonso, Jenny Andrea
Author
Carvajal‑Cogollo, Juan E.
text
Check List
2020
2020-07-03
16
4
821
839
http://dx.doi.org/10.15560/16.4.821
journal article
10.15560/16.4.821
1809-127X
Dichotomius nisus
(Olivier, 1789)
Materials examined.
COLOMBIA
•
1♀
,
23.42 mm
(mean);
Meta
,
Villavicencio
,
Vereda El Carmen
, “Las Pesebreras”
Farm
;
04°08′21.71″N
,
073°39′40.81″W
;
648 m
a.s.l.
;
15 Feb. 2019
;
Cárdenas Johann
and
Parada Jenny
leg.; open pasture;
Crplt
5; UPTC-In-00056
. •
1♀
,
23.42 mm
(mean);
Meta
,
Villavicencio
,
Vereda El Carmen
, “Las Pesebreras”
Farm
;
04°08′24.39″N
,
073°39′39.24″W
;
648 m
a.s.l.
;
15 Feb. 2019
;
Cárdenas Johann
and
Parada Jenny
leg.; open pasture;
Crplt
3; UPTC-In-00057
.
Identification.
This species can be distinguished from other
Dichotomius
species
by the head with transverse roughness, anterior edge of the clypeus margined with two rounded teeth, presence of a tubercle at the base of the eyes in the form of a large horn that is simple in males and small and forked towards the apex in females; pronotum strongly dotted with a vertical slope towards the anterior part, and a very conspicuous midline forming two small rounded protuberances (
Sarmiento-Gárces and Amat-García 2014
).
Distribution.
In
Colombia
it is found in the Orinoco region, from the flatlands to sectors of the lowland foot- hills (
Sarmiento-Gárces and Amat-García 2014
). In the study area, it was observed between
650–700 m
a.s.l. and detected only in open grassland habitat, so it is a rare species (seven individuals).