ABSTRACT
Abstract We report field infestation under natural conditions by the cacao plum moth, Michaelophorus nubilus (Felder & Rogenhofer) on leaves of cacao (Theobroma cacao L.; Malvaceae) for the first time in Southern Chiapas, Mexico. The larvae of M. nubilus damages new "flushing" or light green leaves from buds, from either the main or lateral branches of cacao plants.
ABSTRACT
Phymastichus coffea LaSalle is an African endoparasitoid of adults of the coffee berry borer, Hypothenemus hampei (Ferrari) that was introduced into Mexico for biological control purposes. The objective of this study was to investigate the oviposition behavior of P. coffea on its host under laboratory conditions. The results indicate that P. coffea females exhibited 12 behavioral acts during and after oviposition, such as, walking, cleaning, flying, surface landing, resting, host landing, host antennation, touching the host with forelegs, host recognition, walking on the host, oviposition and cleaning after oviposition. The sequence of each behavior is described in an ethogram.
Subject(s)
Animals , Female , Behavior, Animal , Hymenoptera/anatomy & histology , Oviposition , Weevils/parasitology , Hymenoptera/physiologyABSTRACT
The color preference of A. obliqua was evaluated in two-choice tests. The results showed that both sexes were attracted to wavelengths ranging from 340 nm to 670 nm, although the broad major peak of attraction occurred between 380 and 570 nm.
A preferência de cor por A. obliqua foi avaliada em testes de dupla escolha. Os resultados mostraram que ambos os sexos foram atraídos aos comprimentos de onda que variam de 340 nm a de 670 nm, embora o principal pico da atração de A. obliqua tenha ocorrido entre 380 e 570 nm.