Aphis spinarum Hartig, 1841

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 : 103

Aphis spinarum Hartig, 1841

Aphis spinarum Hartig, 1841: 370 . SYNTYPES: 14 (150 [8.04] lost; 1226 [8.05], 3 lost), Prunus spinosa .

Hyalopterus pruni ( Geoffroy, 1762) (senior synonym—Börner, 1952: 68). Valid

Specimens. Six pointed on a single pin (150) with leaf tissue collected from Prunus spinosa in 1840. All specimens lost. Note that the leaf tissue appears to be coated in white powdery mildew, as described in Hartig (1841).An additional eight pointed specimens on a single pin collected in 1839 (1226). Three specimens are lost, and the rest are nymphs.

Remarks. Börner (1952) treated Aphis spinarum Hartig, 1841 as a synonym of Hyalopterus pruni ( Geoffroy, 1762) , and Favret et al. (2017) reaffirmed this on the basis of host-association. Unfortunately, all specimens that were clearly associated with Prunus spinosa , as determined by Hartig’s notes, have been lost with the exception of pinned host tissue (150) that appears to contain traces of a waxy residue and possibly aphid exuviae. The only remaining type specimens (1226) associated with the A. spinarum label are clearly not H. pruni , and while they appear to belong to the Macrosiphini , their exact identity is yet to be determined. Hartig wrote that they were observed feeding together around the peduncles of their host plant, but the host itself was not identified.