Caccothryptus schillhammeri, Hernando, Carles & Ribera, Ignacio, 2017

Hernando, Carles & Ribera, Ignacio, 2017, Three new species of the genus Caccothryptus Sharp, 1902 from Asia (Coleoptera: Limnichidae), Zootaxa 4243 (2), pp. 366-370: 367-368

publication ID

https://doi.org/10.11646/zootaxa.4243.2.5

publication LSID

lsid:zoobank.org:pub:F4484A86-0615-4396-B312-69ED7E7A59F6

persistent identifier

http://treatment.plazi.org/id/E7618794-532D-FFC4-B2DB-2A7B934AFE9E

treatment provided by

Plazi

scientific name

Caccothryptus schillhammeri
status

sp. n.

Caccothryptus schillhammeri  sp. n. ( Fig. 2View FIGURES 1 – 3)

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.GoogleMaps 

Paratypes. 5 exx ( NMW): same data as holotype, with red paratype labelsGoogleMaps  .

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. 2View FIGURES 1 – 3): 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. 2View FIGURES 1 – 3 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.

NMW

Naturhistorisches Museum, Wien