Psammoecus personatus Grouvelle, 1919

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 : 3-5

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.3858718
persistent identifier	https://treatment.plazi.org/id/03BB8D13-E115-FF9F-FD8A-7D0C8584FD87
treatment provided by	Carolina
scientific name	Psammoecus personatus Grouvelle, 1919
status

Treatment

( Fig. 1 View Fig )

Material examined

Holotype

♀: ‘ Funchal | Madère’, ‘Type’[red label],‘MUSEUM PARIS |1917 | Coll .GROUVELLE’, ‘ Psammoecus | personatus Grl. ’ [not Grouvelle’s hand] ( MNHN).

Other material

Differential diagnosis

Ps. personatus differs from Ps. marginicollis Grouvelle, 1908 , Ps. parallelus Grouvelle, 1919 , Ps. laetulus Grouvelle, 1914 and Ps. luchti sp. nov. by the longer lateral teeth of the pronotum. It differs from Ps. leleupi sp. nov. by the narrower elytral striae, narrower bases of lateral teeth of pronotum, and slender parameres with shorter and fewer setae; from Ps. hacquardi Grouvelle, 1889 by the 1 st antennomere being less than two times as long as 2 nd; from Ps. laetulus by the maximum pronotal width being closer to the middle, narrower elytral striae, and less extensive dark elytral markings.

Redescription

BODY. Elongate oval, total length 2.50-3.00 mm ( Fig. 1A View Fig ). Surface yellowish brown. Elytra with round brown or blackish-brown maculae on disc and narrow macula on posterior part of suture; some specimens without elytral maculae. Antennae as in Fig. 1B View Fig , yellowish brown, 7 th to 10 th and apex of 6 th antennomere brown or blackish brown, 11 th antennomere lighter than basal antennomeres.

HEAD. Broad, temples rounded, immediately narrowed behind eyes; width 0.69-0.83 mm, length 0.36- 0.45 mm, 1.71-1.90 times as wide as long. Eyes protuberant, 0.21-0.24 mm long, distance of inner margins 0.43-0.54 mm. Puncturation on vertex variable, moderate to very dense, distance between punctures irregular, slightly increasing anteriorly. Pubescence composed of long, semierect setae, directed anteriorly; microsculpture absent. Longitudinal impressions on vertex distinct, attaining anterior third of eyes. Antennae 1.23-1.43 mm long; antennomere proportions of holotype as follows: 2.5: 1.4: 1.4: 1.6: 1.6: 1.4: 1.1: 1.1:1.1: 1.0: 2.3.

PRONOTUM. Broad, width 0.71-0.88 mm, length 0.48-0.60 mm, 1.35-1.50 times as wide as long. Anterior angles with distinct group of small, short teeth; lateral margins with five teeth, tooth I small, tooth II larger, tooth III the largest, tooth IV a little smaller than tooth II, tooth V very small. Posterior angle diminutive. Puncturation on disc coarser than on vertex, punctures sometimes hardly separated. Pubescence as on vertex; microsculpture mostly not visible (holotypus), some specimens showing a very shallow reticulation.

ELYTRA. Oval, length 1.63-2.00 mm, combined width 1.08-1.38 mm, 1.35-1.56 times as long as combined width. Rows of punctures on disc somewhat narrower than interstices. Pubescense composed of long, semierect setae, directed posteriorly; microsculpture absent.

PARAMERES. Slender, curved basally, with small setae along the inner margins and single long seta at their apices ( Fig. 1C View Fig ).