Review of the Helochares (Hydrobaticus) MacLeay of the New World (Coleoptera: Hydrophilidae: Acidocerinae)
Author
Short, Andrew Edward Z.
Author
Girón, Jennifer C.
text
Zootaxa
2018
2018-04-09
4407
1
29
50
journal article
22806
10.11646/zootaxa.4407.1.2
8e0aac3a-6556-4b96-a67e-fce9f0db0ba9
1175-5326
3766290
B45E9ABD-CB52-4EE7-91D6-783E8E958AC5
Helochares (Hydrobaticus) trujillo
n. sp.
Figs. 2A
,
5F
,
7A
,
9A
,
10B
.
Type material.
Holotype
(male):
“VENEZUELA:
Merida State
/
Merida
,
Monte Zerpa Area
/ small roadside stream;
14.i.2006
/ AS-06-027/ leg.
A.E.Z. Short
”. (
MIZA
)
.
Paratypes
(10):
VENEZUELA
:
Merida
:
Same
data as
holotype
[
8°37'48.9"N
,
71°9'39.9666"W
] (5,
SEMC
,
MIZA
, MALUZ, including DNA voucher SLE1192)
.
Trujillo
:
Laguna Agua Negra
,
9°18' 22.3812"N
,
70°10'30.9714"W
,
21.i.2009
, margin of lagoon, leg.
Short
,
García
, &
Camacho, VZ
09-0121-04X (2,
SEMC
); same locality but
13.vii.2009
, leg.
Short
et al.
, VZ09-0713-03A (3,
SEMC
,
MIZA
; includes DNA voucher SLE0034)
.
Differential diagnosis.
Body size
5.8–6.6 mm
. Clypeus pale yellow to light brown in color, slightly darkened posteromedially (
Fig. 5F
). Elytra with ten distinct rows of serial punctures; rows 1–4 not reaching the base of the elytra; rows 1–2 weakly impressed into shallow striae along most of their length (
Fig. 2A
). Abdominal ventrites uniformly dark brown; pubescence dense and evenly distributed, the longest hairs shorter than those on the metaventrite. Aedeagus (
Fig. 7A
) nearly 2.4-times longer than its greatest width; apex of parameres truncate, with outer corners forming a rounded right angle; inner corners of apex of parameres forming an acute angle; lateral outer margins of parameres diverging on apical third; median lobe with apex gradually tapering to an acute point.
Description.
In addition to differential diagnosis: dorsal coloration yellow to medium brown, pronotal disc moderately darker (
Fig. 2A
).
Distribution.
Venezuela
(
Merida
Andes region) (
Fig. 10B
).
Etymology.
Named after one of the Venezuelan states in which this species was collected.
Biology.
All three collections of this species were made in densely vegetated, muddy margins of creeks and lagoons at high elevations (>
1800 m
). This species has been observed to carry its egg case.