Adelges (Dreyfusia) merkeri (Eichhorn, 1957)

Diagnosis

Similar to A. nordmannianae . Neosistens: wax pore plates on inner margins of meso- and metathoracic spinal sclerites divided into 3–4 rounded areas, each with 3–8 pits. Total number of pits on the 10 central areas 26–63 (usually more than 40) (Blackman & Eastop 1994, 2014). Holocyclic and dioecious, alternating between Picea orientalis (p. 9) and Abies alba . Scattered on trunk and older branches, on all parts of seedlings. Not ant-attended.

Recorded secondary hosts

Pinaceae: Abies alba . Holman (2009) also lists A. nordmanniana .

Distribution

S.