Cephennium lompei, Assing, 2021

Assing, Volker, 2021, On the Cephennium fauna of the Iberian Peninsula and the Atlantic Islands (Coleoptera, Staphylinidae, Scydmaeninae), Linzer biologische Beiträge 52 (2), pp. 891-931 : 915

Cephennium lompei nov.sp. ( Figs 6 , 44-45 )

Type material: Holotype ♂: " N32°46'56 W016°54'08, Portugal Madeira, Pico das Pedras-Queimada , Lompe 17.2.2017 / Holotypus ♂ Cephennium lompei sp. n. det. V. Assing 2020" ( cAss) . Paratype ♂: same data as holotype ( cAss) .

Etymology: This species is dedicated to Arved Lompe (Nienburg), who collected the type material.

Description: Small species; body length 1.0 mm. Habitus slender ( Fig. 6 ). Head and pronotum reddish-brown; elytra dark-brown.

Eyes composed of approximately eight ommatidia. Antennae slender, 0.45 mm long; antennomeres VI and VIII weakly transverse, IX and X barely 1.5 times as broad as long.

Pronotum approximately 1.15 times as broad as long, with dense and fine, but distinct punctation.

Elytra slender; humeral carinae fine and short, approximately as long as the combined length of the basal three antennomeres; punctation dense and distinct.

♂: protibia moderately curved and somewhat excavate subapically; metaventrite distinctly impressed; aedeagus ( Figs 44-45 ) 0.30-0.32 mm long and slender; ventral process apically of distinctive shape in ventral view; internal structures minute; parameres parameres long, stout, and straight, apically not reaching apex of median lobe and with moderately long apical seta.

Comparative notes: In external and the male secondary sexual characters, C. lompei is practically identical to C. australe . It is, however, easily distinguished from that species by a much longer ( C. australe : aedeagus approximately 0.23 mm long) and apically differently shaped aedeagus, both in lateral and in ventral view. Both C. lompei and C. australe differ from the representatives of the C. validum group from the Iberian mainland by a much more slender habitus alone.

Distribution and natural history: The type locality is situated in the north of Madeira proper, to the northeast of Pico Ruivo. The specimens were sifted together with C. australe .

Figures

Figs 1-6: Male habitus of Cephennium constrictum (1), C. validum (2), C. conlectior (3), C. algarvense (4), C. australe (5), and C. lompei (6). Scale bar: 1.0 mm.

Figs 34-45: Cephennium validum (34-36; 35-36: based on Besuchet (unpubl.)), C. conlectior (37), C. algarvense (38-40), C. australe (41-43), and C. lompei (44-45): (34-35, 37-45) aedeagus in lateral and in ventral view; (36) internal structures of aedeagus in ventral view. Scale bars: 34-35, 37-45: 0.1 mm; 36: 0.02 mm.