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Neotropical Entomology

versión impresa ISSN 1519-566X


CRANSTON, PS  y  KROSCH, M. Barbadocladius Cranston & Krosch, a new genus of Orthocladiinae (Diptera: Chironomidae) from South America. Neotrop. entomol. [online]. 2011, vol.40, n.5, pp.560-567. ISSN 1519-566X.

Barbadocladius n. gen. is erected and described in larval, pupal and adult stages for two species: B. andinus sp. nov. and B. limay sp. nov., from Andean streams. The larva is distinctive by virtue of the very large ventromental 'beard' and the anterior parapods with a 'sleeve' of hooklets in addition to apical pectinate claws. The pupa has hooklets on some tergal and sternal intersegmental membranes. The adult, reported only in teneral specimens has hairy eyes, no antennal apical strong seta, no acrostichals, bare and unmarked wings, cylindrical 4th tarsomere subequal in length to the 5th, pulvilli about half the claw length, and hypopygium with anal point, lacking a virga. Molecular phylogenetic analysis eliminates relationships directly to the Eukiefferiella complex (which also have pupal hooklets), or to the Cricotopus group (adults also with hairy eyes), suggesting instead a sister group relationship to a suite of predominantly austral genera of Orthocladiinae.

Palabras clave : Aquatic insect; distribution; Neotropical Region; taxonomy.

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