A new dung beetle genus with two new species from Chile (Coleoptera: Scarabaeidae: Scarabaeinae)
Author
Vaz-De-Mello, Fernando Z.
Author
Halffter, Gonzalo
text
Zootaxa
2006
2006-05-04
1193
1
59
68
https://www.biotaxa.org/Zootaxa/article/view/zootaxa.1193.1.4
journal article
10.11646/zootaxa.1193.1.4
11755334
5064352
B60303DB-3616-4FAE-B9C9-B84E736D8177
Tesserodoniella meridionalis
sp. nov.
(
Figs. 6–10
)
Holotype
♂
.
CHILE
: VII
Región del Maule
:
Constitución
,
Pantanillos
,
17 December 2003
, “Tramp barber bosque de
Nothophagus
(sic)
glauca
”, leg.
W. Navarrete
leg. (
MNNC
).
Paratypes
4♂
,
2♀
.
CHILE
: VII
Región del Maule
: same as
holotype
(
2 ♂
JMEC
,
1 ♀
MNNC
,
1♂
UNSM
);
Constitución
,
Pantanillo
,
Empedrado
,
September 2002
,
Wilson Navarrete
leg.,
barber trap
. (
1♂
FVMC
)
.
CHILE
: VIII
Región del Biobío
:
Ñuble
:
Cerro Cayumanqui
,
5 December 2004
,
36º42’08’’ S
,
72º30’36’’ W
, “barber”,
J. Mondaca
E. leg. (
1 ♀
CMNC
)
.
Description
Holotype
male.
Head
(
Fig. 6
) clypeus with two elongated triangular teeth separated by Ushaped emargination; each tooth with small, obtuse, external lobe. Clypeogenal border sharply angulate. Dorsal eye surface ovoid, twice as long as wide; interocular region more than 15 eye widths wide.
Prothorax
rhomboidal, almost one and a half times wider than long. Median longitudinal line absent. Posterior angles completely rounded.
Elytra
(
Fig. 7
) with discal striae weak but conspicuous. Interstriae with small rounded shiny spots on microgranulated surface. Seventh interstria with conspicuous discal tubercle, tubercle located where seventh interstria meets sixth. Fifth interstria with tubercle in apical third, third and fourth interstriae each with one conspicuous apical tubercle. Lateral carina absent, but pseudoepipleuron conspicuously delimited.
Legs.
Protibia internally curved with external border bearing three conspicuous and apically narrowed teeth, internal border with apical tooth directed forward and downward. Metaemur (
Fig. 8
) with posterior ventral carina subapically forming rounded lobe. Internal border of metatibiae without tubercles.
Venter
with mesosternum approximately twice as long as wide.
Pygidium
with basal sulcus obtusely angulate medially.
Parameres
(
Fig. 9
) half the length of phallobase.
Variation
Paratypes
vary in size (5.1–6.1 mm) and width (widest at prothorax: 3.2–4.1 mm). Females differ from males in the following respects: protibial teeth wider and stronger, apical internal tooth almost lacking; hind femur with posterior apical lobe rounded; metatibia straighter and more widened apically, external serrations less conspicuous; abdominal ventrite 5 feebly narrowed medially.
FIGURE 10.
Map of central Chile showing distribution of
Tesserodoniella elguetai
n. sp.
(circles) and
T. meridionalis
n. sp.
(triangles).
Remarks
Specimens were caught in a region originally covered by
Nothofagus
forests, and both sclerophyllous (in arid areas) and hygrophyllous riparian vegetation. This distribution is within the
Maule
Biogeographical Province (as defined by
Morrone 2001
,
2006
). The northernmost distributions of austral biotic elements are found in this region (
Fig. 10
).