Browsing by Author "Frankie, G. W."
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Item Biology and morphology of the immature stages of the cleptoparasitic bee Coelioxys chichimeca (Hymenoptera, Apoidea, Megachilidae). (American Museum novitates, no. 3679)(New York, NY : American Museum of Natural History., 2010) Rozen, Jerome G., Jr. (Jerome George), 1928-; Vinson, S. Bradleigh, 1938-; Coville, Rollin E.; Frankie, G. W.Herein we investigate the behavior and anatomy of all larval instars of the cleptoparasitic bee, Coelioxys (Cyrtocoelioxys) chichimeca Cresson. The species is found in Central America with its host, Centris (Heterocentris) bicornuta Mocsáry, one of the cavity-nesting members of the genus. The egg/mature oocyte of C. chichimeca, unusually small (like known eggs of other Coelioxys), is described, as is egg placement in the wall of the brood chamber. The anatomy and behavior of each of the five larval instars is described. The first instar develops within the egg chorion, from which the second instar emerges. The second and third instars apparently normally remain attached by their posterior ends either to the egg chorion or to the place where the egg had been attached to the cell wall. The second instar possesses an array of large spines on the outer surface of each mandible thought to rupture the thick chorion, thus allowing eclosion. Both second and third instars have modified head capsules and mandibles enabling them to attack host immatures. Both instars possess an extremely large pair of spiracles on the eighth abdominal segment and lesser-enlarged spiracles on the two preceding abdominal segments as well as enlarged internal lateral tracheal trunks. These modifications are likely related to the need for the larva to acquire air from the substrate while the body is submerged in nectar. Fourth and fifth instars, no longer attached to the substrate, assume the morphological attributes and behavior of normal provisions-consuming megachilid larvae. The last larval instar defecates and afterwards spins a cocoon bearing a conspicuous nipple. A male pupa is also illustrated and described.Item Biology of the cleptoparasitic bee Mesoplia sapphirina (Ericrocidini) and its host Centris flavofasciata (Centridini) (Apidae, Apinae). (American Museum novitates, no. 3723)(American Museum of Natural History., 2011-10-15) Rozen, Jerome G., Jr. (Jerome George), 1928-; Vinson, S. Bradleigh, 1938-; Coville, Rollin E.; Frankie, G. W.; Melo, Gabriel A. R.; Rocha-Filho, Léo C.This paper investigates the bionomics of the cleptoparasitic bee Mesoplia sapphirina Melo and Rocha-Filho, sp. nov. (described in the appendix), and of its ground-nesting host Centris flavofasciata Friese found along the Pacific coast of Guanacaste Province, Costa Rica. We explore the host-nest searching behavior, egg deposition, and hospicidal behavior of M. sapphirina. Anatomical accounts of its egg, first, second, and fifth larval instars are presented and compared with published descriptions of other ericrocidine taxa. Nests of the host bee as well as its egg and method of eclosion are also described.