A revision of African Psammoecus (Coleoptera, Silvanidae) and descriptions of two new species from the collection of the Musée royal de l’Afrique centrale Author Karner, Michael text European Journal of Taxonomy 2012 2012-06-04 17 1 31 journal article 21836 10.5852/ejt.2012.17 ac80d266-8f8e-4fc5-a172-599a331449a4 2118-9773 3857844 1238951A-FE17-40B2-9DCD-9D7939BECD09 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