Tenucephalus longicauda Linnavuori & DeLong

(Fig. 10)

Tenucephalus longicauda Linnavuori & DeLong, 1977b: 558–559 [original description, illustration, morphology]; Zanol, 2006: 100 [catalogue]; Zahniser, 2007 [online catalogue]; Freytag & Gaiani, 2017 [online catalogue]

Diagnosis. T. longicauda can be distinguished from other species of the genus by a combination of the typical color pattern, its size (male, 4.25–4.5 mm; female, 6.0 mm), male pygofer with dorsal processes without marginal teeth at apex, subgenital plates long and narrowly rounded at apex, connective-aedeagus with symmetrical pair of short processes fused near aedeagal base, style apophysis apex foot-like, and aedeagus in lateral view broad and abruptly angled preapically near gonopore.

Material examined. No specimens examined.

Distribution. This species is known from Panama (Darien Prov.). The original description also lists a paratype from “ Panama, Prov. Chica”, but no province with this name exists in Panama.