Published June 4, 2012 | Version v1
Taxonomic treatment Open

Psammoecus Latreille 1829

Description

Key to species

1. Lateral margins of pronotum without teeth; only anterior and posterior groups of small teeth present............................................................................................................................................................. 2

– Lateral margins of pronotum with various number of large or small teeth......................................... 3

2. 3 rd antennomere shorter than 2 nd; elytral rows of punctures narrower than interstices.............................................................................................................................................. lateralis (Grouvelle, 1899)

– 3 rd antennomere longer than 2 nd; elytral rows of punctures somewhat wider than interstices................................................................................................................................. longicornis Schaufuss, 1872

3. Body length 3.40-4.20 mm; lateral margins of pronotum with very small teeth; 1 st antennomere more than three times as long as 2 nd......................................................................... grandis Grouvelle, 1908

– Body length not more than 3.30 mm; lateral margins of pronotum with distinct teeth, 1 st antennomere less than three times as long as 2 nd....................................................................................................... 4

4. Interstices of lateral striae of elytra with small, distinct spines; pronotum with large lateral teeth, bases of tooth II and III connate............................................................................. spinosus Grouvelle, 1882

– Interstices of lateral striae of elytra without spines, often with tubercles; lateral teeth of pronotum always well separated.......................................................................................................................... 5

5. 1 st antennomere less than two times as long as 2 nd............................................................................... 6

– 1 st antennomere more than two times as long as 2 nd............................................................................ 8

6. 3 nd antennomere longer than 2 nd............................................................ marginicollis Grouvelle, 1908

– 3 rd antennomere as long as 2 nd............................................................................................................. 7

7. Striae on elytral disc narrower than interstices; lateral teeth of pronotum with narrow bases................................................................................................................................ personatus Grouvelle, 1919

– Striae on elytral disc wider than interstices, lateral teeth of pronotum with wide bases.............................................................................................................................................................. leleupi sp. nov.

8. Maximum pronotal width near middle (excluding lateral teeth)......................................................... 9

– Maximum pronotal width in anterior third (excluding lateral teeth)..................................................11

9. Lateral teeth of pronotum slender............................................................... hacquardi Grouvelle, 1889

– Lateral teeth of pronotum triangular, with wide bases...................................................................... 10

10. Elytral striae distinctly wider than interstices; humeral swelling, a transverse band in the middle of elytra, elytral suture along posterior two thirds and elytral apex dark; parameres short, stout, fused with basal piece................................................................................................ simoni Grouvelle, 1892

– Elytral striae slightly wider than interstices; elytra with dark, transversal band at beginning of posterior portion, sometimes with darkened suture near elytral apex; parameres spatula-shaped, distinctly separated from basal piece............................................................................... luchti sp. nov.

11. Elytrae with darkened humeral area, wide dark band across middle and darkened suture near apex; paramera slender............................................................................................ laetulus Grouvelle, 1914

– Elytrae with round macula and darkened suture near apex.............................................................. 12

12. Lateral margin of pronotum with 4 distinct teeth between small posterior tooth and anterior group of small teeth.......................................................................................... trimaculatus Motschulsky, 1858

– Lateral margin of pronotum with 5 distinct teeth between small posterior tooth and anterior group of small teeth................................................................................................... parallelus Grouvelle, 1919

Notes

Published as part of 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, pp. 1-31 in European Journal of Taxonomy 17 on pages 28-29, DOI: 10.5852/ejt.2012.17, http://zenodo.org/record/3857844

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Linked records

Additional details

Biodiversity

Family
Silvanidae
Genus
Psammoecus
Kingdom
Animalia
Order
Coleoptera
Phylum
Arthropoda
Scientific name authorship
Latreille
Taxon rank
genus
Taxonomic concept label
Psammoecus Latreille, 1829 sec. Karner, 2012

References

  • Grouvelle A. 1899. Descriptions de Clavicornes d'Afrique et de la region Malgache, 2 e memoire. Annales de la Societe Entomologique de France 68: 136 - 185.
  • Grouvelle A. 1882. Cucujides nouveaux du Musee Civique de Genes. Annali del Museo civico di storia naturale Giacomo Doria 18: 275 - 296, pl. 7.
  • Grouvelle A. 1919. Descriptions d'especes nouvelles du genre Psammoecus Latr. In: Memoires Entomologiques. Etudes sur les coleopteres 2: 5 - 38. Societe Entomologique de France, Paris.
  • Grouvelle A. 1892. Voyage de M. E. Simon a l'ile de Luzon, Philippines (Mars et Avril 1890), 5 e memoire. Cucujides. Annales de la Societe Entomologique de France 61: 285 - 288.
  • Grouvelle A. & de Peyerimhoff P. 1914. No. II. - Coleoptera: Cucujidae, Cryptophagidae: avec une description de la larve et de la nymphe de Prostominia convexiuscula Grouvelle [Cucujidae]. Transactions of the Linnean Society of London. 2 nd Series: Zoology 17: 141 - 159. http: // dx. doi. org / 10.1111 / j. 1096 - 3642.1914. tb 00591. x