Abstract
Tenuipalpus heveae Baker, 1945 was originally described from only female specimens collected on rubber trees from Belterra, State of Para, Brazil. The original description does not provide enough key information essential for accurate and consistent species identification, and thus, it is difficult to correctly identify this species. In this paper, we redescribe the female, male and immatures of T. heveae, from type and newly collected material, and include additional novel data (e.g. dorsal and ventral ornamentation, leg chaetotaxy and setal measurements) in a standardized form. In addition, we describe Tenuipalpus vieirae n. sp. based on adult females and immatures, collected on Hevea brasiliensis Muell. Arg. and H. guianensis Aubl. (Euphorbiaceae) from Manaus, State of Amazonas, Brazil. We include details of the patterns of ontogenetic setal additions for all stages (except the male of T. vieirae n. sp.) of these two species.
Highlights
Some researchers have recorded a high abundance of Tenuipalpus heveae Baker (Acari, Tenuipalpidae) on rubber tree plantations, Hevea brasiliensis (Euphorbiaceae), in different regions across Brazil (Hernandes & Feres 2006; Daud & Feres 2007; Castro et al 2013)
We examined the types and found that, in addition to a few other characters listed below, the chaetotaxy of the genua, tibiae and tarsi are different between these two species: genua 1-1-0-0 in T. vieirae n. sp. and 3-3-1-0 in T. zanthus; tibia 5-53-2 in T. vieirae n. sp. and 5-5-3-3 in T. zanthus and; tarsi 9(1)-9(1)-4-4 in T. vieirae n. sp. and 9(1)-9(1)-5-5 in T. zanthus
T. heveae is considered a pest of rubber tree plantations in Brazil (Pontier & Flechtmann 2000; Ferla & Moraes 2008), prior to this study, key details of the female, male and immatures have not been described adequately enough to allow its correct identification
Summary
Some researchers have recorded a high abundance of Tenuipalpus heveae Baker (Acari, Tenuipalpidae) on rubber tree plantations, Hevea brasiliensis (Euphorbiaceae), in different regions across Brazil (Hernandes & Feres 2006; Daud & Feres 2007; Castro et al 2013). According to Pontier et al (2000), high infestations of T. heveae may cause leaf rusting followed by plant defoliation. Male and immatures were described by Pontier & Flechtmann (1999; 2000), respectively These descriptions does not provide enough key information essential for accurate and consistent species identification (e.g. dorsal and ventral ornamentation, leg chaetotaxy and setal measurements), and it may be difficult to correctly identify the species. The objective of this paper is to redescribe the female, male and immatures of T. heveae in a standardized form, and describe a new species collected on rubber tree from Manaus, State of Amazonas, Brazil
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