Algunos Detalles Ultraestructurales de la Morfología Externa del Adulto y la Deutoninfa de Allonothrus neotropicus1 en Costa Rica
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Alvarado Rodríguez, Olman
Rodríguez Arrieta, Jesús Alexander
Retana Salazar, Axel P.
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Abstract
Se analiza la ultraestructura de Allonothrus neotropicus con ejemplares
recolectados en hojarasca de suelo de la región Caribe de Costa Rica. Los
caracteres que definen esta especies son: 1) seta e1 el doble de larga que la seta
d1, 2) seta e1 con la misma longitud que la distancia entre las setas e1-h1, 3) seta d2
1.5 X más larga que de la seta d1, 4) ausencia de cavidad oval en la sección distal
del notogaster, 5) forma del notogaster ovalada, 6) superficie de las setas adanales
1 y 2 ciliada, 7) longitud 582 μm. En la deutoninfa las setas le son tan largas como
los sensilos que presentan el mismo ensanchamiento distal que los adultos. Las
setas e1 son mayores que las setas d2, las setas c1, d1, y d2 son similares en
desarrollo. La distancia entre la seta e1-h1 es de dos veces la longitud de la seta e1.
Los tarsos son monodáctilos a diferencia del adulto. La placa genital presenta solo
7 pares de setas. Las placas anales y adanales presentan poco desarrollo. La
longitud total de la deutoninfa es de 391 μm. Es notable la diferencia de tamaño
registrada entre los especímenes adultos de México y Bolivia (617-658 μm) y los de
Costa Rica (479 μm); los cuales presentan una reducción de tamaño de entre 20 y
30% respecto a los especímenes de México y Bolivia. La mayoría de los
caracteres considerados diagnósticos de la especie se hallan bien definidos,
excepto la longitud corporal y la distancia entre las setas e1-h1.
The ultrastructure of Allonothrus neotropicus is studied with specimens collected in soil with leaf litter in the Caribbean region of Costa Rica. The characters that define this species are: 1) seta e1 twice the length of seta d1, 2) seta e1 with the same length as the distance between the setae e1-h1, 3) seta d2 half the length of seta d1, 4) absence of oval cavity in the distal section of notogaster, 5) notogaster oval-shaped, 6) surface of the adanal setae 1 and 2 ciliated, 7) body length 582 μm. In deutonynph, setae le are as long as the sensillae with the same distal club present in adults. Setae e1 are higher than setae d2, setae c1, d1 and d2 with similar development. Distance between e1-h1 twice the length of e1. Tarsal claws in monodactylous are different from the adult. Genital plate has only seven pairs of setae. Anal and adanal plates are weakly developed. The total length of deutonynmph is 391 μm. It is remarkable the size difference observed between specimens of México and Bolivia (617–658 μm) and Costa Rica (479 μm), with size 20 to 30% less than the Mexican and Bolivian specimens. Most of the diagnostic characters of the species are well defined, except the body length and the distance between e1-h1.
The ultrastructure of Allonothrus neotropicus is studied with specimens collected in soil with leaf litter in the Caribbean region of Costa Rica. The characters that define this species are: 1) seta e1 twice the length of seta d1, 2) seta e1 with the same length as the distance between the setae e1-h1, 3) seta d2 half the length of seta d1, 4) absence of oval cavity in the distal section of notogaster, 5) notogaster oval-shaped, 6) surface of the adanal setae 1 and 2 ciliated, 7) body length 582 μm. In deutonynph, setae le are as long as the sensillae with the same distal club present in adults. Setae e1 are higher than setae d2, setae c1, d1 and d2 with similar development. Distance between e1-h1 twice the length of e1. Tarsal claws in monodactylous are different from the adult. Genital plate has only seven pairs of setae. Anal and adanal plates are weakly developed. The total length of deutonynmph is 391 μm. It is remarkable the size difference observed between specimens of México and Bolivia (617–658 μm) and Costa Rica (479 μm), with size 20 to 30% less than the Mexican and Bolivian specimens. Most of the diagnostic characters of the species are well defined, except the body length and the distance between e1-h1.
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Costa Rica, Allonothrus, Ultraestructura
Citation
http://www.bioone.org/doi/abs/10.3958/059.042.0323
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