Adelges (Gilletteella) cooleyi (Gillette, 1907)

Figs 70–71

Diagnosis (see also p. 11)

Apterae brownish black, covered with wax wool. Neosistens 0.3–0.4 mm, black. Dorsum with rounded wax gland plates exuding sparsely white wax. Marginally with glands exuding broad and fairly short wax ribbons, and posteriorly with a tuft of long narrow ribbons. Al. sexuparae 1.2–1.7 mm; abdomen with normal spinal and pleural wax gland plates on all segments; rhinaria at most reaching half-way around the segments. Holocyclic and dioecious, alternating between Picea (p. 11) and Pseudotsuga .

Recorded secondary hosts

Pinaceae: Pseudotsuga menziesii *.

Distribution

D F N S.