Abstract
The rediscovery of Aceria cortii Amrine & Stasny and Shevtchenkella baccharis (Keifer) is reported on Baccharis salicifolia (Asteraceae) from Central Argentina and both species are redescribed. Aceria cortii is a gall inducer in leaves and stems of the plant whereas S. baccharis is a leaf vagrant. The topography of the area anterior to the eriophyoid genital coverflap is discussed. This constitutes a first record of S. baccharis for South America.
Highlights
In the course of investigating leaf galls on Baccharis salicifolia (Ruiz. & Pav.) Pers. (Asteraceae), "chilca", "mulefat", in Cordoba, Argentina, two eriophyid species were collected – one from within leaf and young stem galls, identified as Aceria cortii Amrine & Stasny, 1994, originally described from this plant in the same area, as Aceria baccharidis by Corti in 1917, and one vagrant on the same leaves and identified as Shevtchenkella baccharis (Keifer, 1939), originally described from this same plant, in Calihttp://www1.montpellier.inra.fr/CBGP/acarologia/ ISSN 0044-586-X
CLSM studies were performed at the "Center for Molecular and Cell Technologies" and "Center for Microscopy and Microanalysis" of the Research Park of St
In Keifer (1938) this structure is illustrated, apparently for the first time, in the drawing of Platyphytoptus sabinianae, as one single piece, it is medially indented;in Keifer (1938), in the illustration of Stenacis convolvens (Nalepa), it is drawn as a solid rectangular structure with the same ornamentation as the leg coxae; in Keifer (1939a) this structure is outlined as a rectangle in the drawing of Oxypleurites baccharis; in Keifer (1940 and 1951), in the drawings of O. glabratae and O. juglandis, respectively, this coverflap base appears as a single strcuture and in Keifer (1960, 1961 and 1979), in the drawings of Ditrymacus athiasella, O. solidaginis and Eriophyes spermaphaga, respectively, again it appears as a single structure
Summary
In the course of investigating leaf galls on Baccharis salicifolia (Ruiz. & Pav.) Pers. (Asteraceae), "chilca", "mulefat", in Cordoba, Argentina, two eriophyid species were collected – one from within leaf and young stem galls, identified as Aceria cortii Amrine & Stasny, 1994, originally described from this plant in the same area, as Aceria baccharidis by Corti in 1917, and one vagrant on the same leaves and identified as Shevtchenkella baccharis (Keifer, 1939), originally described from this same plant, in Calihttp://www1.montpellier.inra.fr/CBGP/acarologia/ ISSN 0044-586-X (print). (Asteraceae), "chilca", "mulefat", in Cordoba, Argentina, two eriophyid species were collected – one from within leaf and young stem galls, identified as Aceria cortii Amrine & Stasny, 1994, originally described from this plant in the same area, as Aceria baccharidis by Corti in 1917, and one vagrant on the same leaves and identified as Shevtchenkella baccharis (Keifer, 1939), originally described from this same plant, in Calihttp://www1.montpellier.inra.fr/CBGP/acarologia/ ISSN 0044-586-X (print).
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