Cephennium tensum nov.sp. (Figs 10, 50, Map 1)

Type material: Holotype ♂: "E – Alicante [08], 380 m, Sierra de Aitana, Sella stream valley, floated, 38°36'37N, 00°15'25W, 28.III.2007, C. Andújar / Holotypus ♂ Cephennium tensum sp. n. det. V. Assing 2020" (cAss) . Paratypes: 2♀♀: same data as holotype (cAss); 1♂ [strongly damaged, but aedeagus intact], 1♀: "E – Alicante, S. d'Aitana, Fuente de Alcantara 380 m, 38°36'37N, 00°15'25W, leg. Andujar 28.3.2007 " (cAss) .

Etymology: The specific epithet is the past participle of the Latin verb tendere (to stretch) and alludes to the conspicuously long aedeagus.

Description: Body length 1.0- 1.1 mm. Habitus (Fig. 10) slender, body rather weakly convex in cross-section. Colouration yellowish-red.

Eyes rudimentary, transparent, without defined ommatidia. Antenna with antennomeres VI and VIII small and strongly transverse, IX and X nearly twice as broad as long, and XI barely 1.5 times as long as broad.

Pronotum approximately 1.15 times as broad as long and weakly convex in crosssection; punctation dense and extremely fine, barely noticeable; interstices without microsculpture.

Elytra slender and weakly convex in cross-section, broader than pronotum, anteriorly each with a rather large, subcircular, tomentose impression; humeral carina moderately distinct, approximately as long as the combined length of the basal four antennomeres; punctation extremely fine, barely noticeable; interstices without microsculpture.

♂: protibia weakly curved apically, not distinctly excavate or flattened on inner face; meso- and metatibiae weakly flattened on inner face of apical portion; aedeagus (Fig. 50) of conspicuous shape, very long in relation to body size, approximately 0.5 mm long; ventral process narrow from base to apex and with nearly parallel lateral margins, apically weakly concave; internal structures indistinct; parameres long, slender, straight, and with conspicuously long apical seta.

Comparative notes: Cephennium tensum is readily distinguished from other anophthalmous congeners by the highly distinctive shape of the aedeagus.

Distribution and natural history: Thetypelocalityissituated in Sierra de Aitana, Alicante, Southeast Spain (Map 1). The specimens were collected by washing sandy soil from a slope with vegetation of grasses and herbs in a stream valley at an altitude of 380 m.