RESUMO
Description of the final instar of Acanthagrion trilobatum Leonard, 1977 and A. speculum Garrison, 1985 is based on associated specimens from San José, Turrialba and Sarapiquí Provinces, Costa Rica. Illustrations of these two species and a comparative table summarizing the main features of all larvae of Acanthagrion described to date are provided. The larva of A. trilobatum is distinguished from that of A. speculum by shorter lateral caudal lamellae (length 7 mm vs. 8.2 mm), lateral carina of abdominal segments 2-8 with spiniform setae on posterior 1/3 (lateral carinae of only S6-8 with spiniform setae in A. speculum), and male gonapophyses incurved (straight in A. speculum).
Assuntos
Besouros , Odonatos , Animais , Costa Rica , Larva , Masculino , Instrumentos CirúrgicosRESUMO
Acanthagrion cuyabae Calvert, 1909 was described based on a male from State of Mato Grosso, Brazil. The female of this species was described based on morphological characters of four individuals collected in copula from State of Mato Grosso do Sul, and three other specimens of same locality. Acanthagrion cuyabae is here revalidated based on morphological characters of the female. Illustrated keys to the groups of Acanthagrion Selys, 1876 and species of the viridescens group occurring in Brazil are provided.
Acanthagrion cuyabae Calvert, 1909 foi descrita com base em um macho do estado de Mato Grosso, Brasil. Descreve-se a fêmea desta espécie com base na análise de caracteres morfológicos de quatro indivíduos coletados em cópula em Mato Grosso do Sul e três outros exemplares da mesma localidade. Acanthagrion cuyabae é aqui revalidada com base nos caracteres morfológicos da fêmea. Chaves ilustradas para os grupos de espécies de Acanthagrion Selys, 1876 e espécies do grupo viridescens ocorrentes no Brasil são fornecidas.
RESUMO
Acanthagrion cuyabae Calvert, 1909 was described based on a male from State of Mato Grosso, Brazil. The female of this species was described based on morphological characters of four individuals collected in copula from State of Mato Grosso do Sul, and three other specimens of same locality. Acanthagrion cuyabae is here revalidated based on morphological characters of the female. Illustrated keys to the groups of Acanthagrion Selys, 1876 and species of the viridescens group occurring in Brazil are provided.
Acanthagrion cuyabae Calvert, 1909 foi descrita com base em um macho do estado de Mato Grosso, Brasil. Descreve-se a fêmea desta espécie com base na análise de caracteres morfológicos de quatro indivíduos coletados em cópula em Mato Grosso do Sul e três outros exemplares da mesma localidade. Acanthagrion cuyabae é aqui revalidada com base nos caracteres morfológicos da fêmea. Chaves ilustradas para os grupos de espécies de Acanthagrion Selys, 1876 e espécies do grupo viridescens ocorrentes no Brasil são fornecidas.