Types, Morphologies and Distributions of Antennal Sensilla of Quadrastichus erythrinae (Hymenptera: Eulophidae)
Keywords:
antennal scanning, Quadrastichus erythrinae Kim, sensilla, ultrastructure, morphologyAbstract
To uncover the relationship between chemical receptors and behaviors of the erythrina gall wasp (EGW), Quadrastichus erythrinae Kim (Hymenptera: Eulophidae), and to elucidate the chemical connections between the parasite and the host plant, the present study focused on determining the types, morphologies and distributions of the various antennal sensilla of adult EGW. With scanning electron microscopy and 3-dimensional microscopy, we found that the antennae of EGW adults have 6 kinds of sensilla, namely, sensory pore sensilla, chaetica sensilla, multiporous plate sensilla, trichoid sensilla, basiconic capitate peg sensilla and uniporous trichoid sensilla. Both the male and female wasps have these 6 kinds of sensilla. However the types and numbers of sensilla on the funicle and clava differed between males and females, but such a difference was not seen on the scape and pedicel between the 2 sexual genders. We found one kind of sensillum located on the end of pedicel of Q. erythrinae Kim that has not been described previously. The results of our research may aid use of EGW in the biological control of undesirable Erythrina spp. trees.
Para descubrir la relacion entre los receptores quimicos y el comportamiento de la avispa de las agallas de erythrina (AAE), Quadrastichus erythrinae Kim (Hymenptera: Eulophidae), y para esclarecer las conneciones quimicas entre el parasito y la planta hospedera. Se realizo un estudio enfocado en determinar la clase, la morfologia y distribucion de las diferentes sensilas de la antena de los adultos de AAE. Con la microscopia electronica de barrido y la microscopia de 3 dimensiones, encontramos que la antena de los adultos de AAE tienen 7 clases de sensilas, las cuales son las setas de Bohm, sensilas de poros sensoriales, sensilas queticas, sensilas de placas multiporosas, sensilas trichoides, sensilas basiconicas capitadas y sensilas trichoides uniporosas. Las avispas machos igual que las hembras tienen estas 7 clases de sensillas. Sin embargo, la clase y el numero de sensilas sobre el funiculo y la clava de los machos y las hembras son diferentes, pero no se observo diferencias en el antennifer, escapo y pedicelo de los 2 sexos. Se encontro una clase de sensillum situado en el extremo del pedicelo de P. erythrinae Kim que no ha sido descrito anteriormente. Los resultados de nuestra investigacion pueden ayudar en el uso de AAE para el control biologico de especies de arboles de Erythrina no deseables.
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