Development of the Orchid Weevil, Orchidophilus aterrimus (Waterhouse)

Orchidophilus aterrimus (Waterhouse) is a weevil pest of Vanda, Dendrobium, Phalaenopsis, and other orchids in Hawaii. Development of all immature stages usually occurred within orchid pseudobulbs. Eggs were deposited into cavities made by adult feeding and hatched in an average of 11.3 days. Larval development was completed in approximately 117 days. Larvae pupated in cells within the gallery. The pupal stadium averaged 15.9 days. The entire life cycle required an average of 144 days. A 47 day preoviposition period was observed. Females laid an average of 2.4 eggs per week during their lifespan. Feeding and oviposition occurred primarily during daylight hours

Development of The Transparentwinged Plant Bug, Hyalopeplus pellucidus (Stal), A Pest of Cultivated Guava in Hawaii

The life cycle of the transparentwinged plant bug, Hyalopeplus pellucidus (Stal), was studied on guava, Psidium guajava I... Eggs were deposited in stems, flower buds, and leaf midribs and hatched in an average of 7 days. The 5 nymphal stadia were completed in an average of 14 days. The nymphs were anthophagous, and feeding on flower buds was necessary for normal development. Cage studies showed a direct relationship between feeding injury and the abscission of guava flower buds

Life History and Feeding Behavior of Nephaspis amnicola Wingo

The life history and feeding behavior of the coccinellid Nephaspis amnicola Wingo, were studied in the laboratory. Eggs hatched in an average of 6.9 days. The 1st, 2nd, 3rd, and 4th larval stages were completed in an average of 3.1, 2.3, 2.6, and 5.3 days, respectively. The pupal stage was completed in an average of 6.2 days. Adult longevity varied greatly; males and females lived for an average of 349 and 162 days, respectively. Each female laid an average of 212 eggs, and the ovipositional period was 131 days. Prey-finding by larvae and adults depended upon chance contact. Feeding was by extraction and regurgitation

The Orchid Weevil, Orchidophilus aterrimus (Waterhouse): Insecticidal Control and Effect on Vanda Orchid Production

Control of the orchid weevil, Orchidophilus aterrimus (Waierhouse) with acephate 75SP, bendiocarb 76WP, chlorpyrifos 2.0EC, and microencapsulated methyl parathion 2.0F significantly increased the number of marketable flowers of Vanda "Miss Joaquim" and decreased the number of unmarketable, white streaked flowers. The significant reduction in larval infestations, adult feeding injury and the rate of white streaked flowers in insecticide-treated vanda plants suggests that orchid weevil infestation and/or injury may be responsible for white streaked flowers. The relatively long life cycle of 144 days and the toxicity of tested insecticides to only the adult stage of the orchid weevil were probably reasons which made it necessary to apply 6 spray applications before a severe infestation (> 14 weevils per week) was reduced to a minimum level (<4 weevils per week) in Vanda "Miss Joaquim.

Evaluation of Two Formulations of A Laboratory Diet for the Orchid Weevil Orchidophilus aterrimus (Waterhouse)

A did for laboratory rearing of the orchid weevil, Orchidophilus aterrimus (Walerhouse), was developed and evaluated. Evaluation of 2 formulations of the diet showed that both formulations were suitable for orchid weevil development. Evaluation of one formulation of the diet showed that it was suitable as a food for adult weevils

Effects of Intercropping Beans and Onions on Populations of Liriomyza spp. and Associated Parasitic Hymenoptera

Surveys of commerical plantings and experimental studies on onions were conducted in the Kula area of Maui to provide information on the Liriomyza species and their parasites inhabiting the crop. Liriomyza huidobrensis (Blanchard) (95.7%) and L. trifolii (Burgess) (4.2%) were the predominant species found infesting the onions in commercial plantings. L sativae Blanchard was occasionally recorded. The major parasite species reared from leafminers collected from onions were Halticoptera circulus (Walker) and Chrysocharis parksi Crawford. Attempts to augment parasilization of leafminers infesting onions by planting adjacent bean borders for production of leafminer parasites were unsuccessful due to several factors which are discussed