Illustrated identification guide to the Nordic aphids feeding on Conifers (Pinophyta) (Insecta, Hemiptera, Sternorhyncha, Aphidomorpha) Author Albrecht, Anders Christian text European Journal of Taxonomy 2017 2017-07-24 338 1 160 journal article 22023 10.5852/ejt.2017.338 be9f3ab9-3131-4e11-8d29-a94275ffaac9 2118-9773 3834349 86786AB1-4A1A-4A1E-B42B-53B73D66ED60 Adelges (Dreyfusia) piceae (Ratzeburg, 1843) Fig. 47 Diagnosis Similar to A. merkeri but neosistens with central areas of wax pore plates on meso- and metathoracic spinal sclerites often more-or-less triangular, each with 3–6 pits. Total number of pits on 10 central areas 18–59, usually less than 40. The characters distinguishing A. piceae and A. merkeri are variable, and the identification requires several specimens ( Blackman & Eastop 2006 ; Heie 2004 ). Monoecious, anholocyclic on Abies . Found on trunk and branches. Not ant-attended. Recorded hosts Pinaceae : Abies alba , amabilis , balsamea , concolor , lasiocarpa , nordmanniana , sibirica , spp. Distribution D. B7 (B4) Antennae 6-segmented. In colonies between needles of young shoots................................. ............................................................................................................ Mindarus Koch, 1857