In-Nest Biologies and Development of Immature Stages of Three Osmia Species (Hymenoptera: Megachilidae)

Torchio, Phillip F.

doi:10.1093/aesa/82.5.599

Cited by 97 publications

(72 citation statements)

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“…This interpretation explains the strong curvature of the egg: the lower part of the emerging head is positioned to ingest fluid from the provisions. This information has never been recorded before for any Centridini but is in agreement with observations on Eucerini (Rozen, 1964), Tapinotaspidini (Rozen et al, 2006), and on at least some Megachilidae (Baker, 1971;Torchio, 1989;Rozen and Özbek, 2004;Rozen and Kamel, 2007;Rozen and Hall, 2011).…”

Section: Nesting Biology Of Centris Flavofasciatasupporting

confidence: 91%

Biology of the Cleptoparasitic BeeMesoplia sapphirina(Ericrocidini) and Its HostCentris flavofasciata(Centridini) (Apidae: Apinae)

Rozen

Vinson

Coville³

et al. 2011

American Museum Novitates

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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.

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Section: Nesting Biology Of Centris Flavofasciatasupporting

confidence: 91%

Biology of the Cleptoparasitic BeeMesoplia sapphirina(Ericrocidini) and Its HostCentris flavofasciata(Centridini) (Apidae: Apinae)

Rozen

Vinson

Coville³

et al. 2011

American Museum Novitates

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“…Torchio (1989a) presented details of embryogenesis for three other species of Osmia that seem to closely correspond to our more casual observations. We assume that the second instar commences feeding on the provisions, and food is easily seen in its midgut.…”

Section: Nesting and Developmental Biology Of Osmia Chalybeasupporting

confidence: 74%

Nesting and Developmental Biology of the Cleptoparasitic BeeStelis ater(Anthidiini) and Its Host,Osmia chalybea(Osmiini) (Hymenoptera: Megachilidae)

Rozen¹,

Hall²

2011

American Museum Novitates

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Herein we provide the first account of the nesting biology of Osmia (Helicosmia) chalybea Smith and of its cleptoparasite Stelis (Stelis) ater Mitchell, a newly confirmed host association. The nesting behavior of O. chalybea is similar to what is known about other members of the subgenus Helicosmia, but novel information concerning egg eclosion and cocoon structure and function are reported. Eggs of S. ater were discovered both on the front surface of the host provisions as well as deeply buried in the pollen-nectar mixture. From numerous observations, larval S. ater attacks host immatures or conspecifics whenever encountered. Because young larvae are unable to crawl (perhaps a family characteristic), the hospicidal individual may be in its third to fifth stadium or even in its second stadium, although none of the latter was certainly identified. Although usually a single cleptoparasitic egg or larva was found in a cell, two or three were occasionally observed there. The cocoon of S. ater was also examined closely. Although its construction differs in a number of ways from that of the host cocoon, the functions of both seem to be the same, i.e., excluding parasitic/parasitoid arthropods and preventing desiccation while allowing exchange of air with the outside through complex filtering devices at the front ends of cocoons. Known parasites/parasitoids in the area of study include the minute parasitoid wasp Melittobia digitata Dahms (Eulophidae) and the parasitic mite Chaetodactylus rozeni Klimov 2 AMERICAN MUSEUM NOvITATES NO. 3707 and O'Connor (the latter recovered from adults of O. chalybea). The nearly airtight cocoon fabric of both bee cocoons presumably assists immatures in maintaining their water balance through their many months of confinement. Ovarian statistics for both species are presented and compared with congeners, and their eggs/mature oocytes are described. Both have five larval instars. Comparative taxonomic descriptions of last larval instars are presented, and mandibular shapes of other larval instars are diagrammed.

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“…Any egg touched by the water or spore suspension before it was absorbed into the provision was eliminated from the study, and replaced with a fresh cell having an egg attached to the provision. Any larva that failed to reach the second instar (Torchio, 1989) Youssef et al (1985) for their Ascosphaera sp 2 and parallel those observed in larvae of M rotundata inoculated with spores of A aggregata (Vandenberg and Stephen, 1982;McManus and Youssef, 1984). In our study, A torchioi did not penetrate the integument of the larva and did not develop aerially as reported for Ascosphaera proliperda on both M rotundata and O / propinqua (Youssef et al, 1985).…”

Section: Introductionsupporting

confidence: 65%

Effects of temperature and host developmental stage on Ascosphaera torchioi Youssef and McManus prevalence in Osmia lignaria propinqua Cresson (Hymenoptera: Megachilidae)

Rust

Torchio

1992

Apidologie

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In-Nest Biologies and Development of Immature Stages of Three Osmia Species (Hymenoptera: Megachilidae)

Cited by 97 publications

References 0 publications

Biology of the Cleptoparasitic BeeMesoplia sapphirina(Ericrocidini) and Its HostCentris flavofasciata(Centridini) (Apidae: Apinae)

Biology of the Cleptoparasitic BeeMesoplia sapphirina(Ericrocidini) and Its HostCentris flavofasciata(Centridini) (Apidae: Apinae)

Nesting and Developmental Biology of the Cleptoparasitic BeeStelis ater(Anthidiini) and Its Host,Osmia chalybea(Osmiini) (Hymenoptera: Megachilidae)

Effects of temperature and host developmental stage on Ascosphaera torchioi Youssef and McManus prevalence in Osmia lignaria propinqua Cresson (Hymenoptera: Megachilidae)

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