Psammoecus leleupi, Karner, 2012

Karner, Michael, 2012, A revision of African Psammoecus (Coleoptera, Silvanidae) and descriptions of two new species from the collection of the Musée royal de l’Afrique centrale, European Journal of Taxonomy 17, pp. 1-31 : 11-14

publication ID	https://doi.org/ 10.5852/ejt.2012.17
publication LSID	lsid:zoobank.org:pub:1238951A-FE17-40B2-9DCD-9D7939BECD09
DOI	https://doi.org/10.5281/zenodo.3858742
persistent identifier	https://treatment.plazi.org/id/6C0AD0D5-64DF-4610-A7EF-966C4F495CAA
taxon LSID	lsid:zoobank.org:act:6C0AD0D5-64DF-4610-A7EF-966C4F495CAA
treatment provided by	Carolina
scientific name	Psammoecus leleupi
status	sp. nov.

Treatment

Psammoecus leleupi sp. nov.

( Fig. 5 View Fig )

Etymology

The name is dedicated to Narcisse Leleup (1912-2001), who collected many of the Psammoecus stored in the the Musée royal de l’Afrique Centrale.

Material examined

Holotype

Paratypes

Diagnosis

Maximum pronotal width closely behind anterior third; margin of pronotum rounded, bearing four triangular lateral teeth with wide bases. Elytra with dark brown to blackish maculae at base, on the disc and with a dark apex. The large maculae on the disc often form a transverse band, connected to the apical maculae by the darkened suture; striae on elytral disc wider than interstices. Parameres with wide bases and club-shaped extensions, bearing numerous long setae.

Differential diagnosis

Ps. leleupi sp. nov. differs from Ps. hacquardi , Ps. parallelus , Ps. marginicollis , and Ps. personatus by wider elytral striae; from Ps. personatus also by wider bases of lateral teeth of pronotum, and broad parameres with numerous long setae. It differs from Ps. laetulus by maximum pronotal width being closer to middle, lateral margin of pronotum more curved, parameres with wide basis, club-shaped extensions, and longer setae; from Ps. marginicollis by longer lateral teeth of pronotum, and by parameres with wide basis and club-shaped extensions; from Ps. parallelus by longer lateral teeth of pronotum, and extensive dark maculae on elytra with darkened area at elytral basis; from Ps. luchti sp. nov. by darkened elytral bases and parameres with wide basis, club-shaped extensions, and numerous longer setae.

Description

BODY. Elongate oval, total length 2.80-3.20 mm ( Fig. 5A View Fig ). Elytra with dark brown to blackish maculae at base, on the disc and with a dark apex. The large maculae on the disc often form a transverse band, connected to the apical maculae by the darkened suture. Head and pronotum darker than the bright areas of elytra, mostly even darker than the elytral maculae. Antennal coloration variable, 7 th to 9 th and basis of 6 th antennomere darkened, 10 th and 11 th antennomere very bright, often almost white. Some specimens with darkened 10 th antennomere.

HEAD. With large, protuberant eyes, temples narrowed immediately behind eyes; head width 0.76- 0.85 mm, length 0.44-0.48 mm, 1.61-1.79 times as wide as long. Puncturation on vertex dense, coarse; pubescence composed of long, semierect setae, directed anteriorly; microsculpture absent. Longitudinal impressions on vertex distinct, slightly curved, attaining middle of eyes. Eyes protuberant, 0.23-0.25 mm long, distance of inner margins 0.48-0.53 mm. Antennae as in Fig. 5B View Fig , comparatively robust, 1.38- 1.53 mm long; antennomere proportions of holotypus as follows: 2.5: 1.5: 1.5: 1.6: 1.6: 1.5: 1.4: 1.2: 1.0: 1.0: 2.2.

PRONOTUM. Broad, near apical margin and apical angles with shallow impressions; width 0.83- 0.91 mm, length 0.59-0.66 mm, 1.33-1.51 times as wide as long. Anterior angles with distinct group of comparatively big teeth, lateral margins with four distinct triangular teeth; tooth I short, tooth II somewhat longer, tooth III the longest, tooth IV a bit shorter than tooth III, but longer than tooth II; posterior angle with distinct angular tooth. Puncturation and pubescence on pronotal disc as on vertex. Microsculpture absent.

ELYTRA. Oval, length 1.88-2.13 mm, combined width 1.20-1.43 mm, 1.39-1.58 times as long as combined width. Rows of punctures on disc wider than interstices; pubescense composed of long, semierect setae; microsculpture absent.

PARAMERES. With wide, stout base and club-shaped apical extension. Inner margin of base with 3-4 longer and numerous short setae; inner margin of extension with numerous small setae, apical portion of extension with 2-3 long setae ( Fig. 5C View Fig ).