Notas de Ixodologia: II - uma nova espécie do gênero Amblyomma e uma nova espécie do gênero Ixodes (Acari Ixodidae)

Abstract

<abstract language="eng">A new tick, Amblyomma parkeri, n. sp., is described as a parasite of Coendu sp. from S. Paulo, Brazil. Female holotype, nymph and larva are described (Figs. 2 e 3). The n. sp. differs completly from Koch's species Amblyomma longirostre, the common parasite of the Erethizotidae. Standard data for measures of the female dorsal scutum ixodidae are proposed as follows (fig. 1): PA = Antero-posterior; PB = Postero-basal; PM = Postero-median; TT = Transversal; OO = Inter-ocular; OT= Occulo-transversal; SS = Inter-scapular; CC = Cervical; PT = Postero-transversal; ST = Scapulo-transversal; NPT = Normal to the postero-transversal; NST = Normal to the scapulo-transversal. In the female holotype the standard data are as follows: PA = 2.00 mm; PB = 2.26 mm; PM = 1.10 mm; TT = 2.20 mm; OO = 2.26 mm; SS = 0,84 mm; CC = 0.63 mm; SC = 0.12 mm; NPT = 0.20mm; STN = 0.1 mm. Peritrema 0.80 x 0.42 mm with a narrow postero-internal angle and a large, elongated macula. Coxa I with two short spines and all other coxae with only one shorter spine, shortest in coxa IV. Hypostoma spatulated with formula 3/3. Gnathosoma 1.42 mm long and basis 0.63 mm long by 0.84 greatest wide. Palpi with smoth external surface, 1.00 mm long. Type lot No. 4458 from Cotia, S. Paulo, Brazil; in the acarological collection of the Escola Paulista de Medicina, S. Paulo. Ixodes didelphidis, n. sp., differing from Ixodes loricatus Neumann by the shape of the peritremata (figs. 4 a 5) of the male and female and by the number of the punctations in this organ is described form Didelphidae, Muridae and Cavidae. Twenty eight lots were obtained from Anápolis, Goiás, Brasil, where I. loricatus is subtituded by the n. sp. under description. Comparison with NEUMANN'S types of I. loricatus was possible through the courtesy of Prof. A. BRIZARD from Toulouse, who kindly loaned NEUMANN'S material. Female cotypes N° 40 and male allotype N° 531 in the Collection of Ixodidae of the Oswaldo Cruz Institute

Redescription of the female, description of the male, and several new records of Amblyomma parkeri (Acari: Ixodidae), a South American tick species

“…In the present study, we present the first description of the male of A. parkeri and provide morphological evidence to support the original description of A. parkeri (Fonseca and Aragão 1952) and subsequent works that considered it a valid taxon (Aragão and Fonseca 1961;Camicas et al 1998;Guimarães et al 2001;Guglielmone et al 2003;Barker and Murrell 2004). This evidence was supported by molecular analyses of portions of the 16S rRNA and 12S rRNA mitochondrial genes.…”

“…Before the present study, reports of A. parkeri were known only from the type specimens described by Fonseca and Aragão (1952). However, reexamination of all available specimens of A. longirostre and A. geayi in tick collections showed that these 2 species have occasionally been misidentified.…”

“…from Cotia, state of São Paulo, Brazil, at 15 March 1933 (Fonseca andAragão 1952). In the same description, Fonseca and Aragão (1952) also reported 3 A. parkeri, females collected with 3 A. longirostre males on a porcupine (Coendou sp.) from Lagoa, state of Santa Catarina, Brazil, on September 11, 1931.…”

“…Thereafter, there has been no further report of A. parkeri, and the male has remained unknown. According to Fonseca and Aragão (1952), the major differences between the females of A. parkeri and A. longirostre are the smaller body size, rounded hypostome (spatulate), and scutum as long as wide in A. parkeri, contrasting with the larger body size, sharply pointed hypostome (lanceolate), and scutum longer than wide in the A. longirostre female.…”

Taxonomic Status ofIxodes didelphidis(Acari: Ixodidae)

“…More than 35 species of Ixodes have been reported in the Neotropical zoogeographic region, but this genus is one of the most difÞcult to distinguish taxonomically and there are still several doubtful species throughout the world (Clifford et al 1973). Fonseca and Aragão (1952) described a tick collected from opossums in Brazil, which they called Ixodes didelphidis Fonseca & Aragão, a species closely related to Ixodes (Ixodes) loricatus Neumann. This later species is a common ectoparasite of opossums in central-southern Brazil, and has been reported from Mexico to Argentina (Cooley and Kohls 1945).…”