title: Additional morphological information on Dipteropeltis hirundo Calman, 1912, and a description of Dipteropeltis campanaformis n. sp. (Crustacea: Branchiura) from two characiform benthopelagic fish hosts from two Northern rivers of the Brazilian Amazon.
abstract: Dipteropeltis is a monotypic genus of the Branchiura and endemic to South America. Twelve specimens of Dipteropeltis sp. and micrographs of a thirteenth specimen were obtained from four institutions. Measurements and light micrographs were taken of all the specimens. The specimens were compared to all known descriptions of D. hirundo and sorted into two groups, those that conformed to the description of D. hirundo; and those that differed morphologically. Two specimens, one from each group¸ were stained with lignin pink and subsequently prepared for Scanning Electron Microscopy. The differences observed in the specimens indicated that a new species exists. Thus, Dipteropeltis campanaformis n. sp. is described from seven specimens collected from two characiform benthopelagic fish species and compared to D. hirundo. Dipteropeltis campanaformis n. sp. differs from D. hirundo in the head shape, the length and shape of the carapace lobes, the membrane composition of the maxillules, the shape of the maxillae, the shape of the mouth, and the shape of the natatory lobes.
authors.affiliation: Department of Zoology, Faculty of Science, University of Johannesburg, South Africa, 2006.; Email: lneethling@hotmail.co.uk.
authors.forename: Lourelle Alicia Martins
authors.initials: LA
authors.lastname: Neethling
authors.affiliation: Coordenação de Biodiversidade, Laboratório de Parasitologia de Peixes - LPP, Instituto Nacional de Pesquisas da Amazônia - INPA, Cx. Postal 2223 - Manaus, Amazonas, Brasil.; Email: jcmalta@inpa.gov.br.
authors.forename: José Celso De Oliveira
authors.initials: JC
authors.lastname: Malta
authors.affiliation: Department of Zoology, Faculty of Science, University of Johannesburg, South Africa, 2006.; Email: aoldewage@uj.ac.za.
authors.forename: Annemariè
authors.initials: A
authors.lastname: Avenant-Oldewage
mesh_terms: D000818:Animals; D033341:Arguloida / Q000033:anatomy & histology* / Q000145:classification* / Q000502:physiology; D001938:Brazil; D060125:Characiformes; D004478:Ectoparasitic Infestations / Q000453:epidemiology / Q000469:parasitology / Q000662:veterinary; D005260:Female; D005393:Fish Diseases / Q000453:epidemiology / Q000469:parasitology; D045483:Rivers; D013045:Species Specificity