Data/hora: 10/06/2024 15:56:39

Provedor de dados: 	Revista Brasileira de Entomologia	
País: 	Brazil	
Título: 	The small species of Belostoma Latreille (Heteroptera, Belostomatidae). III. A revision of oxyurum group, with a new species from Brazil and description of the male of B. noualhieri Montandon	
Autores: 	Ribeiro,José Ricardo I.; Estévez,Ana L.	
Data: 	2009-06-01	
Ano: 	2009	
Palavras-chave: 	Neotropics; Nepomorpha; Systematic; Water bug.	
Resumo: 	Species of the oxyurum group (sensu Lauck) consist of five extant Neotropical small species, whose lengths range 15.0 to 20.0 mm. The anterior interocular width about 1.5 times the width of an eye and ventral diverticulum of phallus flattened, circular, and large are, in combination, diagnostic. The small species of the oxyurum group were included in the Lauck´s key to the identification of the species groups, without dealing with the species included in it because many of them are very similar in appearance. Therefore here we redescribe and key the Belostoma species of the oxyurum group. Belostoma oxyurum (Dufour) is newly recorded from Brazil (Paraná and Rio Grande do Sul). Holotype and lectotype are designated for B. oxyurum and B. sanctulum Montandon, respectively. The aspect of the prosternal keel, the ratio between the width of the ventral diverticulum of phallus and its length in ventral view, and the aspect of dorsal arms of ventral diverticulum have proven useful for better species delimitation. Based on specimens from Pará State (N. Brazil), Belostoma carajaensis Ribeiro &amp;amp; Estévez, sp. nov. is described and illustrated. This new species differs from B. sanctulum in having anteoculus shorter than interoculus and the dorsal arms of ventral diverticulum divergent and large. A male specimen of B. noualhieri Montandon was collected in São Paulo State and based mainly on features of male genitalia, this species is here also included under oxyurum group.	
Tipo: 	Info:eu-repo/semantics/article	
Idioma: 	Inglês	
Identificador: 	http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0085-56262009000200004	
Editor: 	Sociedade Brasileira De Entomologia	
Relação: 	10.1590/S0085-56262009000200004	
Formato: 	text/html	
Fonte: 	Revista Brasileira de Entomologia  v.53 n.2 2009	
Fonte: 	info:eu-repo/semantics/openAccess