CEPAVE   05420
CENTRO DE ESTUDIOS PARASITOLOGICOS Y DE VECTORES
Unidad Ejecutora - UE
artículos
Título:
Laelapid mites (Parasitiformes, Gamasida) parasites of Akodon philipmyersi (Rodentia, Cricetidae) in the Northern Campos Grasslands, Argentina, with the description of a new species
Autor/es:
MARCELA LARESCHI
Revista:
JOURNAL OF PARASITOLOGY
Editorial:
AMER SOC PARASITOLOGISTS
Referencias:
Año: 2011 vol. 97 p. 795 - 799
ISSN:
0022-3395
Resumen:
Androlaelaps ulysespardinasi, a new species of laelapid mite, is described based on specimens collected from the pelage of the akodontine rodent Akodon philipmyersi Pardiñas, D´Elía, Cirignoli and Suarez, 2005, which is endemic to the Northern Campos Grasslands in Misiones Province, Argentina. The formal taxonomic description, illustrations, and SEM photographs of the new species are derived from female specimens: males and nymphs are unknown. Androlaelaps ulysespardinasi n. sp. resembles Androlaelaps rotundus Fonseca, 1936 in general appearance, but differs in having a V-shaped more sclerotized raised ridge among j4 and j6 setae in the dorsal shield and the idiosoma with bilobed posterior margin, smaller size (586-634 µm length), sternal plate 1.3 times broader than longer, epigynial shield 1.2 longer than broader, and an anal shield almost as long as it is broad. Both species are close to Androlaelaps misionalis Lareschi, 2010 and Androlaelaps maurii Lareschi and Gettinger, 2009, but differ in their larger size (586-650 µm), in having the distance between j6 setae similar to the distance between j5 setae (72-83 µm), 11 pairs of setae in opisthogaster, and lacking a pair of setae close to epigynal shield. In addition, An. ulysespardinasi n. sp. is unusual in having chelicerae with both digits with 2 teeth. Androlaelaps rotundus species group, which includes the new species, is postulated, and a key to identify the different species is provided. Host specificity supports that cophylogeny between these mites and akodontine rodents from Akodon division may have occurred.