A revision of African Psammoecus (Coleoptera, Silvanidae) and descriptions of two new species from the collection of the Musée royal de l’Afrique centrale
Karner, Michael
European Journal of Taxonomy
2012
2012-06-04
17
1
31
Karner, 2012
Karner
2012
[627,863,781,808]
Insecta
Silvanidae
Psammoecus
GBIF
Animalia
Coleoptera
13
14
Arthropoda
species
luchti
sp. nov.
( Fig. 6)
Etymology The name is dedicated to Wilhelm Lucht ( 1922-2000), who provided the author with much helpful advice in the course of his first steps into entomology.
Material examined Holotype ♂: ‘I.R.S.A.C. – Mus. Congo| N. Rhodesia: Mpika| ( Muchinga Mts.) 1700 m. | VII.1960 N. Leleup’, ‘ Dans| l’humus’ [blue label], ‘ HOLOTYPUS| Psammoecus| luchti | des. Karner’[red label] ( MRAC). Paratypes 1♂‘COLL. MUS. TERVUREN | Kivu: Butembo | alt. 1740 m. III.1965| M.J. Celis et collab.’, ‘sous | Dendrocalamus’, ‘ PARATYPUS| Psammoecus| luchti | des. Karner’ [red label] ( MKF). 1♂‘COLL. MUS. CONGO| Katanga: gal. forest. | de la Kisanga IX- | N. Leleup 1948 | (Env. d’ Elisabethville)’, ‘Récolté dans | humus’ [blue label], ‘ PARATYPUS| Psammoecus| luchti | des. Karner’ [red label] ( MKF). 1 spm ‘I.R.S.A.C. – Mus. Congo| N. Rhodesia: Abercorn, | 1800m. | VII.1960N. Leleup’, ‘Galerie forestière | de la Mwengo, | dans l’humus’, ‘ PARATYPUS| Psammoecus| luchti | des. Karner’ [red label] ( MRAC). 1 spm ‘I.R.S.A.C. – Mus. Congo| N. Rhodesia: Danger Hill | à 45 km. N. de Mpika | VII.1960N. Leleup’, ‘Humus | de galerie | forestière’ [blue label], ‘ PARATYPUS| Psammoecus| luchti | des. Karner’ [red label] ( MRAC). 3 spms ‘I.R.S.A.C. – Mus. Congo| N. Rhodesia: Mpika | (Muchinga Mts.) 1700 m. | VII.1960N. Leleup’, ‘Dans | l’humus’ [blue label], ‘ PARATYPUS| Psammoecus| luchti | des. Karner’ [red label] ( MRAC).
Diagnosis Lateral margins of pronotum rounded, bearing five distinct teeth with wide bases. Elytra elongate-oval, bright reddish-brown with dark, transverse band at beginning of posterior portion, sometimes with darkened suture near elytral apex; striae on elytral disc slightly wider than interstices. Parameres small, elongate, spatula-shaped. Differential diagnosis Ps. luchti sp. nov.differs from Ps. simoni Grouvelle, 1892by the elytral striae being only slightly wider than the interstices, elytra being more elongate, elytral basis not darkened. It differs from Ps. hacquardiand Ps. marginicollisby wider bases of lateral teeth of pronotum; from Ps. hacquardialso by wider elytral striae and elytral basis not darkened; from Ps. marginicollis, Ps. parallelus, Ps. leleupi sp. nov., Ps. simoni, and Ps. laetulusby spatula-shaped parameres. It further differs from Ps. leleupi sp. nov.and Ps. laetulusby elytral basis not darkened; from Ps. personatusby shorter lateral teeth of pronotum with wider bases; and from Ps. laetulusby more rounded lateral margin of pronotum.
Description BODY. Elongate oval, total length 2.80-3.19 mm( Fig. 6A). Bright reddish-brown, elytra with dark, transverse band at beginning of posterior portion, some specimens also with darkened suture near elytral apex. Antennae with 7 th-10 thantennomere blackish brown, some specimens with darkened apex of 6 thantennomere. 11 thantennomere, sometimes also 10 thantennomere, bright yellowish brown, brighter than basal antennomeres. Fig. 6. Psammoecus luchti sp. nov., holotype. A. Habitus. B. Left antenna. C. Parameres. Scale line A, B: 1 mm; C: 0.2 mm. HEAD. Very wide, with large, protuberant eyes, temples narrowed immediately behind eyes. Head width 0.79-0.88 mm, length 0.44-0.48 mm, 1.75-1.96 times as wide as long. Eyes 0.20-0.23 mmlong, distance of inner margins 0.50-0.60 mm. Puncturation on vertex coarse, relatively dense, distance between punctures irregular; pubescence composed of long erect setae, directed anteriorly; microsculpture absent. Longitudinal impressions on vertex distinct, short, attaining second third of eyes. Antennae as in Fig. 6B, long and slender, 1.45-1.55 mmlong, antennomere proportions of holotypeas follows: 2.6: 1.1: 1.4: 1.3: 1.5: 1.4: 1.3: 1.1: 1.0: 1.1: 2.1. PRONOTUM. Broad, shallowly impressed near apical margin and apical angles, width 0.80-0.96 mm, length 0.60-0.73 mm, 1.28-1.40 times as wide as long. Anterior angles with group of very small teeth, lateral margins with five distinct, triangular teeth; tooth I small, tooth II larger, tooth III largest, tooth IV slightly smaller than tooth III, tooth V smallest; posterior angle with very small angular tooth. Puncturation and pubescence on disc as on vertex; microsculpture absent. ELYTRA. Elongate oval, length 1.85-2.05 mm, combined width 1.15-1.40 mm, 1.44-1.65 times as long as their combined width. Rows of punctures on disc slightly wider than interstices, pubescence composed of semierect setae that are somewhat shorter as on head and pronotum; microsculpture absent. PARAMERES. Small, elongate; base less than 2 times as wide as apical extension, inner margins with few short setae, inner portion of apex with four longer setae, outer portion with one shorter and one longer seta ( Fig 6C).
2625675305
1960-07
MRAC
N. Leleup' & Dans & Karner'
Republic of the Congo
1700
Mpika
Muchinga Mts.
13
14
1
1
holotype