Preimaginal Development of Anaphes n.sp. (Hymenoptera: Mymaridae), an Egg Parasitoid of the Carrot Weevil (Coleoptera: Curculionidae)

The developmental stages of Anaphes n.sp. (Hymenoptera: Mymaridae), an egg parasitoid of the carrot weevil, Listronotus oregonensis (LeConte) (Coleoptera:Curculionidae), were characterized from material reared at 23 ± 1°C and 18L:6D. The ovarian egg is elongated, stalked, and 170 μm long. Embryogenesis required about 12 h. The first instar is of the mymariform type and is followed by three sacciform instars. Larval development was completed in 4 to 5 days and the mature larva occupied of the host egg. Segmentation of Anaphes n.sp. occurred in the pupal stage. Pupation required about 2 days and ended with the discharge of the meconium. Sclerotization of the pharate imago continued for 2 or 3 days and was usually completed by the end of the 10th day. The adult emerged on the morning of the 11th or 12th day.