Vesperus jertensis, a rare endemic species to Cáceres province of Spain, has been described (only male) by Pablo Bercedo Páramo and Pablo Bahíllo de la Puebla in 1999 [▽]. Female of this interesting nocturnal species was described thanks to its different behavior only in 2008 by Felipe Calvo Sánchez [❖]. V. jertensis differs from the closest species, V. serranoi, by the longer antennae and also by the shinier head, pronotum and elytral surface thanks of the lesser puncturation.

Body length:	7.5 – 11.8 mm
Life cycle:	2 and more years [?]
Adults in:	August - September
Host plant:	probably polyphagous on the roots of decidous trees and shrubs
Distribution:	an endemic species to Cáceres province (Extremadura, Spain)

The depicted male beetle was collected in Plasencia environs (Cáceres province, Extremadura, Spain) on August 26, 2015.

Collected by Felipe Calvo Sánchez (we gratefully thank for the depicted donated specimen to our friend Marcos López).

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[▽]
Bercedo Páramo P. and Bahíllo de la Puebla P.:
Nueva especie de Vesperus Dejean, 1821 de la Península Ibérica (Coleoptera, Cerambycidae).
[ New species of Vesperus Dejean, 1821 from the Iberian Peninsula (Coleoptera, Cerambycidae) ]
Graellsia 55: 149-156, 1999. [download ]

[❖]
Calvo Sánchez F.:
Descripción de la hembra de Vesperus jertensis Bercedo Páramo & Bahillo de la Puebla, 1999 (Coleoptera: Cerambycidae).
[ Description of the female of Vesperus jertensis Bercedo Páramo & Bahillo de la Puebla, 1999 (Coleoptera: Cerambycidae) ]
Boletín Sociedad Entomológica Aragonesa 43 : 117–120, 2008. [download ]

Vives i Noguera E.:
Révision du genre Vesperus Dejean 1821 (Coleoptera : Cerambycidae).
Annales de la Société Entomologique de France, Paris 40 (3-4): 437-457, 2005. [download ]