Apsectus kaliki sp. n. from Guyana is described, illustrated and compared with all the known Neotropical species of the genus Apsectus LeConte, 1854. Lectotypes are designated for Apsectus centralis Sharp, 1902 and Apsectus hystrix Sharp, 1902
al. (2011) argue that taxonomic studies should include morphological measurements and molecular data, the idea of identifying genera and species from egg morphology has been around since the very earliest pentastomid studies (e.g. Stiles, 1891 ). In the current study, we present the description of the egg and larva I of a raillietiellid species ( Raillietiella mottae ) in the Neotropical region, with the intention of helping parasitologists, veterinarians, and physicians working with wild animals to identify pentastomiasis, as well as providing additional
Introduction The Neotropical region corresponds to Central and South America, where five species of sea turtles are found: Green turtle ( Chelonia mydas Linnaeus, 1758), loggerhead turtle ( Caretta caretta Linnaeus, 1758), hawksbill turtle ( Eretmochelys imbricata Linnaeus, 1766), Olive ridley turtle ( Lepidochelys olivacea Eschscholtz, 1829) and leatherback turtle ( Dermochelys coriacea Vandelli, 1761) ( Lutz & Musick, 1996 ). The International Union for Conservation of Nature ( IUCN, 2015 ) considers C. caretta, C. mydas and L. olivacea as endangered
kelp gull Larus dominicanus Lichtenstein 1823 (Charadriiformes, Laridae) and neotropic cormorant Phalacrocorax brasilianus Gmelin 1789 (Pelecaniformes, Phalacrocoracidae) ( Hinojosa-Sáez & González-Acuña, 2005 ). According to Raimilla et al . (2012) , parasitic surveys on Chilean raptors are also scarce and focused mainly to ectoparasites, being available 7 reports for Falconiformes and only 1 for Strigiformes. The genus Milvago Spix 1824 (Falconiformes, Falconidae) is composed by two Southamerican species: Milvago chimango Vieillot 1816 (Falconiformes
): Host specifi city is linked to intraspecifi c variability in the genus Lamellodiscus (Monogenea). Parasitology, 135(5): 607 - 616. DOI: 10.1017/ S003118200800437X KRITSKY, D.C., MENDOZA-FRANCO, E.F., SCHOLZ, T. (2000): Neotropical Monogenoidea. 36. Dactylogyrids from the gills of Rhamdia guatemalensis (Siluriformes: Pimelodidae) from cenotes of the Yucatan Peninsula, Mexico, with proposal of Ameloblastella gen. n. and Aplanoblastella gen. n. (Dactylogyridae: Ancyrocephalinae). Comp. Parasitol., 67(1): 76 - 84 KRITSKY, D.C., THATCHER, V.E., BOEGER, W.A. (1986
In order to have better knowledge of the parasites of the common water snake Liophis miliaris (Linnaeus, 1758), a checklist of its helminths was produced based on a review of the literature and new records of worms identified during the course of a parasitological survey combining data from stool analysis (n = 22) and necropsies (n = 8) of specimens of this snake from Muriaé, state of Minas Gerais, Brazil. Thirty-one helminth species (two acanthocephalans, one cestode, 11 nematodes and 17 trematodes) were so far reported in L. miliaris in the Neotropical region, already including the records in the present study of Acanthorhabdias acanthorhabdias Pereira, 1927, Paracapillaria (Ophidiocapillaria) cesarpintoi (Freitas & Lent, 1934) and Strongyloides ophidiae Pereira, 1929. Taxonomic comments on these nematode species are given, and areas of occurrence of A. acanthorhabdias and P. cesarpintoi are expanded in southeastern Brazil. In addition, factors related to parasite richness of L. miliaris, which is likely related to its aquatic habits, are discussed.
The timber of the Neotropical tree Cedrela fissilis is used in construction, shipbuilding, carpentry and for medical purposes. In this study, polymorphic microsatellite (SSR) markers derived from an enriched genomic library were characterized using 120 adult trees from four different C. fissilis populations. No substantial genotypic linkage disequilibrium was detected among all possible pairs of SSR loci. The number of alleles per locus ranged from 2 to 20, the average allele number ranged from 8 to 9.7, depending on the population. The observed heterozygosity among the different SSR loci varied from 0.0 to 1.00 , the expected heterozygosity varied from 0.07 to 0.95 On the population level, the average observed and expected heterozygosities ranged from 0.50 to 0.63 and from 0.64 to 0.70, respectively. The average fixation index among populations ranged from 0.09 to 0.24. Thus, the SSR loci revealed high poly - morphism rates and can be used to study the genetic diversity,structure, mating system, and gene flow in C. fissilis.
woody species in the tropics. Most of these studies have
been conducted in the neotropics.
In face of rapid deforestation in the tropics a central
question is: what is the relative contribution of evolu-
tionary history, logging, forest fragmentation, genetic
processes, and demographic phenomena to diversity and
genetic structure in the tree populations? In classical
population genetics, these issues have been investigated
through theoretical work using simplified scenarios.
More recently, new techniques and methods have been
developed which are now
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