Cladistic analysis reveals polyphyly of Tomarus (Coleoptera: Scarabaeidae: Dynastinae): new classification and taxonomic revision
Author
López-García, Margarita M.
0000-0003-2796-2931
margaralopezg@gmail.com
Author
Deloya, Cuauhtémoc
0000-0002-4774-140X
cuauhtemoc.deloya@inecol.mx
text
Zootaxa
2022
2022-11-22
5211
1
1
119
http://dx.doi.org/10.11646/zootaxa.5211.1.1
journal article
202083
10.11646/zootaxa.5211.1.1
bb97b9dd-2acc-4244-8f30-72bef07b9ed9
1175-5326
7345007
5754769C-B747-4714-BDD9-7D5509D48BEB
Tomarus colombianus
López-García & Gasca-Álvarez, 2014
(
Figs. 9G
,
11I
,
16D
,
19D
,
27D
;
44
)
Tomarus colombianus
López-García & Gasca-Álvarez,
2014
in
López-García
et al
. 2014: 579
. Original combination. Male
holotype
(CIUQ) “Colombia—Valle / La Bocana-B/ventura / Altura:
5 m
.
s.n.m / Fecha: 16/04/04 / Método: Directo / Col: Serna F. //
Tomarus colombianus
/ López-García & / Gasca-Álvarez / HOLOTIPO // CIUQ 1505”. Female
paratype
(CIUQ) “
COLOMBIA
:
Dep. Valle del Cauca
/ Buenaventura / La Bocana /
15.iv.2004
/ Light trap /
2 m
altitud / Rivas L. Coll //
Tomarus colombianus
/ López-García & / Gasca-Álvarez / PARATIPO // CIUQ 1504”. Female
paratype
(CIUQ) “Colombia- Valle
Cauca
/ B/ventura-Bocana / Altura:
2 m
.
s.n.m / Fecha: Mayo/04 / Método: Directo-Bosque / Col: Mendoza L. //
Tomarus colombianus
/ López-García & / Gasca-Álvarez / PARATIPO // CIUQ 1507”. Male parat–pe (ICN) “Colombia—Valle / La Bocana-B/ventura / Altura:
5 m
.
s.n.m / Fecha: 17/04/04 / Método: Directo / Col: Serna F.” Female
paratype
(ICN) “
Huila
/ Neiva /
5.iii.1974
/ Bagos A. I. //
Tomarus colombianus
/ López-García & / Gasca-Álvarez / PARATIPO. Type locality: La Bocana,
Valle del Cauca
, Colombia.
Description.
Habitus as in
Fig. 27D
. Length 18.0–21.0 mm; humeral width
8.5–10.5 mm
. Color dark reddish brown.
Head:
Frons and clypeus coarsely and densely rugose. Frontoclypeal region with 2 conical tubercles separated by about 6 tubercle diameters. Clypeus narrowed towards apex, base 3 times wider than apex. Clypeal teeth triangular, separated by less than a tooth diameter. Mandible with 2 apical teeth and a lateral, narrowly rounded tooth. Mentum abruptly constricted at apical 3rd. Galea of maxilla with teeth 5 and 6 well developed. Interocular distance 3.2 times an eye width.
Pronotum:
Surface with minute punctures; denser and deeper on anterior and lateral angles, disc impunctate. Apical tubercle small, rounded, not visible in lateral view. Subapical fovea shallow, elongate, narrow (1/3 the interocular distance); equal in both sexes, surface rugopunctate.
Scutellum:
Surface with deep, large punctures forming 2 lines parallel to margins.
Elytra:
Punctures on first interval as large as those on other intervals. Inner surface of apex with rounded, large tubercles forming 14–16 parallel lines.
Abdomen:
Apex of tergite IV with a triangular wide area with small, irregular tubercles forming 9–10 diagonal nearly parallel lines. Pygidium with dense rugosity on basal 3rd (
Fig. 9G
), apex rounded.
Venter:
Apex of prosternal process flat, transversely oval to rounded. Metasternum with minute setae on anterior angles.
Legs:
Protibia tridentate, with a basal, small denticle (
Fig. 11I
). Apex of metatibia crenulate, with 9–11 spinules.
Male genitalia:
Spiculum gastrale without basal plates. Phallobase 1.1 times longer than parameres. Parameres with 2 dorsal teeth on each side; basal tooth acute, longer than apical (
Figs. 16D
,
19D
). Internal sac with copulatory lamella and short lamellar spiny belt; with a complex of 7 spine-like accessory lamellae, with dense granules at base.
Diagnosis.
Tomarus colombianus
can be differentiated by the following character combination: frontoclypeal tubercles conical; pronotal surface nearly smooth (
Fig. 27D
); pronotal tubercle not visible in lateral view; pronotal fovea shallow and narrow (1/3 as wide as interocular distance); protibia tridentate, with an additional basal denticle (
Fig. 11I
); apex of metatibia with 9–11 spinules; parameres with 2 dorsal teeth on each side, main teeth long, widely separate from secondary teeth (
Figs. 16D
,
19D
).
Distribution.
Colombia
(
López-García
et al
. 2014
).
Locality records (
Fig. 44
).
Five specimens examined from ICN and CIUQ.
COLOMBIA
(5).
Huila
(1):
Neiva.
Valle del Cauca
(4):
Buenaventura.
Natural history.
The few known specimens were found in tropical humid forest near a mangrove swamp and Guandal forest. They were collected by hand and at light traps.