Coccus strobus Hartig, 1839

Brunet, Bryan M. T., Raupach, Michael J., Rehage, Heinz-Otto, Havill, Nathan P. & Foottit, Robert G., 2023, Discovery of the primary aphid (Hemiptera: Aphidomorpha) and scale insect (Hemiptera: Coccomorpha) type specimens from the collection of Theodor Hartig (1805 - 1880), Zootaxa 5369 (1), pp. 89-116 : 96

Coccus strobus Hartig, 1839

Coccus strobus Hartig, 1839: 643 . SYNTYPES: 3 (field no. missing [2.04]; 87 [2.05]).

Chermes strobi ( Hartig, 1839) (change of combination and senior synonym with respect to Chermes corticalis Kaltenbach, 1843: 197 — Ratzeburg, 1844: 203).

Coccus strobi ( Hartig, 1839) (alternate spelling— Hartig, 1851: 85).

Chermes corticalis Kaltenbach, 1843 (misapplied junior synonym— Buckton, 1883: 23, “ Chermes strobi, Hartig (?)”).

Pineus strobi ( Hartig, 1839) (change of combination— Börner, 1908: 415). Valid

Specimens. Two covered in wax and mounted on a rectangular card without a label. A third (87) covered in wax and mounted in situ on plant tissue. Hartig’s notes indicate that it was collected between May 1–20, 1834 from oak in Tiergarten , Berlin, Germany .

Remarks. Hartig (1839) identified the North American white pine, Pinus strobus , as the host plant and source of species etymology for Coccus strobus Hartig,1839 so specimen 87 may be mislabelled or oak was accidentally identified as the host in his notes. Hartig (1839) was in doubt about the generic placement of C. strobus and other related pine and spruce feeding species. Indeed, general confusion about where to place species of Coccus Linnaeus, 1758 , Chermes Linnaeus, 1758 , and Kermes Linnaeus, 1740 extended well into the next century ( Burdon 1907). We cannot be completely certain of the identity of these specimens without slide mounting them, but the individual in situ on pine bark and the description by Hartig (1839) of this species covering the trunks of Pinus strobus in white wool “as if covered with snow,” leave little doubt that these specimens are Pineus strobi ( Hartig, 1839) , the only adelgid species that exhibits this trait.