The slender pug (Eupithecia tenuiata) is a moth of the family Geometridae. It is found throughout Europe and in the Caucasus, Georgia Asian Turkey and Armenia. in habitats favoured by its food plant. This is one of the smallest of the Geometrids with a wingspan of only 14–16 mm. The forewing ground colour is light greyish-ochreous. There are numerous curved dark fuscous striae, the veins and costa are ochreous-brown. The edges of the biangulate median band form dark costal spots. The forewing has a dark ovoid discal mark. The forewings lack a tornal spot. The hindwings are whitish grey with dark striae and a small discal spot.