Schizoneura lanuginosa 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 : 98

Schizoneura lanuginosa Hartig, 1839

Schizoneura lanuginosa Hartig, 1839: 645 . SYNTYPES: 2 (Field no. missing [5.06, 5.07]; 1532 [5.03]; 1741 [5.02]), Ulmus . Eriosoma lanuginosum ( Hartig, 1841) (change of combination— Baker, 1915: 16). Valid

Specimens. Found in abundance on September 15, 1836 in Tiergarten, Berlin, Germany. An alate (1532) was collected and mounted on a point. Another alate (specimen 1741) collected from Forstgarten, Braunschweig, Germany on October 20, 1836 and pinned. Six additional specimens and an elm gall are also present. Four of these are card-mounted together on a single pin with a white, handwritten label that reads “Blutlause Schizoneura lanigera ”. Next to these but left of Hartig’s standard label for Schizoneura lanigera [= Eriosoma lanigerum ] ( Hausmann, 1802), are two specimens pointed on separate pins. The first of these (1039) was collected July 17, 1833 from an elm gall. Hartig refers to this as “ Chermes ” in his journal entry. The second pin and the gall are unlabelled.

Remarks. Specimens 1532 and 1741 are larger in size compared to the remaining specimens, and unlike the latter, or at least specimen 1039, were not clearly associated with elm at the time of collection.Also, while the wings of specimen 1532 are disfigured, those of specimen 1741 have venation that is inconsistent with Eriosoma lanuginosum ( Hartig, 1839) . Its forewings have unbranched medial veins and its hindwings have transverse veins that arise very close together and do not resemble Hartig’s own illustrations ( Hartig 1841, Fig. 24). Instead, it appears to be a species of Prociphilus . Thus, these two specimens may not correspond to the Schizoneura lanuginosa Hartig, 1839 type specimens.

Whether the six additional specimens belong to Hartig’s S. lanuginosa series or to his S. lanigera is to be determined. Their order within the Schmitt box suggests the former despite the handwritten S. lanigera label. At least one of these (1039) was collected from elm, the host of E. lanuginosa , and the gall pinned nearest to this specimen resembles an E. lanuginosa gall. If they instead correspond to Hartig’s S. lanigera series, the host record does not agree since this species has not been recorded from elm in Europe and Hartig (1841) only listed apple as its host.