Aphis (Aphis) pulverea Nieto Nafria, Moreno-Gonzalez & Ortego 2022, sp. n.

• Main Authors: Nieto Nafría, Juan M., Ortego, Jaime, Moreno-González, Víctor, Durante, M. Pilar Mier
• Format: Other/Unknown Material
• Language: unknown
• Published: Zenodo 2022
• Subjects: Biodiversity; Taxonomy; Animalia; Arthropoda; Insecta; Hemiptera; Aphididae; Aphis; Aphis pulverea; Antártica
• Online Access: https://doi.org/10.5281/zenodo.7075639; http://treatment.plazi.org/id/03FF8784FFC7FFD5E8FCFB2DFB4FFF5C

Aphis ( Aphis ) pulverea Nieto Nafría, Moreno-González & Ortego sp. n. Types. Holotype: apterous viviparous female CHI-522- 7 (mounted with two paratypes): CHILE: AYSéN DEL GENERAL CARLOS IBáñEZ DEL CAMPO, Capitán Prat, Baker and Neff rivers junction (47º 07' S, 72º 46' W, 230 m), on Senecio patagonicum , 16-January-2019, collection of the Universidad de León . Paratypes: 190 apterous viviparous and 4 alate viviparous females, collection of the Universidad de León of them: (1) same data as the holotype, 66 apterae and 4 alatae; (2) ARGENTINA: RÍO NEGRO: Pilcaniyeu: Dina Huapi (41º 04' S, 71º 07' W, 900 m), on Senecio filaginoides , 19-January-2000, 52 apterae; (3) ARGENTINA: CHUBUT: Futaleufú: Trevelin (43º 07' S, 71º 26' W, 390 m), on Senecio filaginoides , 20-January-2000, 40 apterae; and (4) CHILE: MAGALLANES Y ANTáRTICA CHILENA: Última Esperanza: Paine falls (50º 56' S, 72º 47' W, 120 m) on Senecio sp., 6-January-2016, 32 apterae. Etymology . The Latin epithet “pulvereus, -a, -um” means dusty or pulverulent and allows to remember a very distinguishing character of the species. Descriptions . Apterous viviparous females (Fig. 7). From 191 specimens (164 measured). When alive dull black under a very remarkable layer of white wax powder, with conspicuous black cauda, and antennae and legs mostly brown dark to black. When mounted, most specimens are well pigmented because they are extensively sclerotized (see below). Head smooth for the most part, dark to very dark brown and often with a thin, irregular and pale epicranial line. Frons straight or nearly straight. ANT.I and ANT.II with some irregular streaks. ANT.III with 4–10(14) ST. URS with concave edges on its proximal third. TH.1–2 with sclerotized and striate bands not as dark as the head and ABD sclerites, usually almost complete, fragmented in less pigmented specimens. TH.3 to ABD.6 with a spino-pleural band of diverse development, sometimes cut in the middle and sometimes in contact with the immediate ones and with the MG patches; these last are ...