Three new species of the genus Caccothryptus Sharp, 1902 from Asia (Coleoptera: Limnichidae)
Author
Hernando, Carles
Author
Ribera, Ignacio
text
Zootaxa
2017
4243
2
366
370
journal article
36273
10.11646/zootaxa.4243.2.5
d919071f-81f4-4f70-8eae-f944fa975413
1175-5326
399142
F4484A86-0615-4396-B312-69ED7E7A59F6
Caccothryptus schillhammeri
sp. n.
(
Fig. 2
)
Type
locality
.
Alaungdaw Katthapa NP
,
Sagaing
Division,
Myanmar
.
Type
material
.
Holotype
male (
NMW
): "
MYANMAR
:
Sagaing
Division //
Alaungdaw Katthapa NP
//
22°19.113'N
94°28.518'E
//
13.5.2003
, ca.
350 m
// leg.
Schillhammer
et al. (122)"; genitalia extracted and mounted on a transparent card, abdominal tergites mounted on the same card, pinned with the specimen; plus red
holotype
label.
Paratypes.
5 exx (
NMW
): same data as holotype, with red
paratype
labels
.
Description
.
Holotype
: length
3.7 mm
, width
2.1 mm
;
paratypes
: length
3.7-4.2 mm
, width
2.1-2.2 mm
. Body black, oval. Antennae, other cephalic appendages and legs dark brown, protibiae darker.
Head: Eye margin weak, with a small denticle by insertion of antennae; with a very narrow supra-ocular sulcus. Eyes slightly prominent. Puncturation on head uniformly fine and very dense; space between punctures smaller than their diameter. Two
types
of golden pubescence, one long, erect, a second short, very dense, recumbent. Pubescence on frons orientated towards clypeum; pubescence on the lateral and basal areas orientated towards vertex.
Pronotum: Transvere, slightly narrower than base of elytra, lateral margins regularly and slightly curved. Very finely bordered; border narrowing towards base, in which it becomes almost unappreciable. Puncturation similar to that on head, denser on disc, less dense on margins, very uniform; spaces between punctures wider than diameter. Two
types
of setae, one long (much longer than on head), erect and castaneous; a second shorter, anteriorly recumbent, golden. The recumbent setae forming a weakly defined pattern.
Elytra: Disk with double puncturation, one very fine and dense, a second coarser, more irregular but with some series forming incipient 4-5 series, especially in the disc. Elytral pubescence double, similar to that of pronotum; erect setae darker, recumbent setae generally golden, but in some areas darker (colour depends on angle of incidence of light). Recumbent seta with a zig-zag pattern, orientated towards apex. Elytra bordered; border stronger in humerus and less marked apically, almost indistinguishable at apex. Membranous wings well developed.
Venter: Black; abdominal ventrites with a marginal brownish area, last abdominal ventrite castaneous. Venter fully pubescence except hypomeras, which are glabrous. Prosternum strongly encased into mesosternum. Prosternum finely and densely puncturated, margins bordered; mesosternum small, finely and densely punctured; metasternum with puncturation similar to mesosternum. Puncturation simple. Glandular pores in 4th abdominal sternite only.
Aedeagus (
Fig. 2
): Distal part of parameres and lateral sides of median lobe with a marked transverse reticulation, giving an overall dull appearance. Apex of parameres very narrow, with a deep emargination; with a denticular process in the medial part.
Comparative notes
. The presence of reticulation in the aedeagus is unique among the known species of
Caccothryptus
. Among the species of the
C. compactus
group, the species can be easily distinguished by its narrow parameters in ventral view (
Fig. 2
B), leaving a broad space between the median lobe and the apex of the parameters (see Figs
11-14 in
Hernando & Ribera 2014
).
Etymology
. Named after Harald Schillhammer, collector of the
type
series and specialist in
Staphylinidae
(and mineralogy).
Distribution
. So far only known from the
type
locality.