Satyrium acaciae very limited extent ; they occur particularly on rocky slopes, with blackthorn hedges and exposed to the full force of the sun, in June, showing a preference for resting on Umbellifers. The larva feeds on "Prunus spinosa" and "Prunus divaricata" Satyrium acaciae Satyrium acaciae, the sloe hairstreak, is a butterfly in the family Lycaenidae. The distribution of the sloe hairstreak ranges from 49° N in France and 51° N in Germany and Poland. It is absent from southern Italy, the Mediterranean islands, Portugal and Spain except for the Montes Universales and the north. T. acaciae F. (73b). Smaller than true
Prunus fruticosa the pun are "fructus" or "frux", from "fruor", "enjoy" - a fruit is a result enjoyed - and "frutex", "shrub", adjective "fruticosus", "bushy", from a totally different root. "Prunus" is a grammatical feminine, so "Prunus fruticosa" agrees in gender. However, Pallas says "Haec mihi tantum fructibus suis innotuit, qui distinctam itidem speciem indicare videntur", "It came to my attention at last because of its fruit, which repeatedly seemed to indicate a distinct species." The fruit seemed "fere Pruni forma", "nearly in the form of "Prunus"", especially because "praedita oblongo nucleo", "furnished with an oblong seed." So, Pallas moved it from