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Browsing "P. E. Hallett (2011) Farmed Solitary Bees & Wasps, Data Set (generations 1997-2008)" by Title

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Showing results 147 to 166 of 756
PreviewIssue DateTitleAuthor(s)
DSCN0454BAR211B.JPG.jpg10-Aug-2006BAR stand, block 211, 6.4 mm cavities. The cavity with the mother subsequently changed its nest construction! See later image of this nest block in this collection for 2007.01.25.Hallett, Peter
DSCN0711MB211B_mAB_two_constructions.JPG.jpg25-Jan-2007BAR stand, block 211, 6.4 mm cavities. Two nest constructions for Megachile leaf-rolling bees. Top: probably the exotic farmed M. rotundata with nested 'dixie' cups with irregular edges to the side walls (cross walls hidden); below: probably M. relativa with regular visible cross walls and side walls. The 4th cavity up is anomalous as there is a transition from the putative relativa form to the putative rotundata form (see tantalizing earlier image of this block on 2006.08.10 in this collection).Hallett, Peter
DSCN0455BAR212C_imA_aAA.JPG.jpg10-Aug-2006BAR stand, block 212, 8.0 mm cavities. Cocoons of Isodontia mexicana (grass nest, left over cricket prey), and the mud barrels of the Spider Wasp Auplopus.Hallett, Peter
DSCN0456BAR213B_aAB_mAB_mcAwars.JPG.jpg10-Aug-2006BAR stand, block 213, 6.4 mm cavities. From below: cavity 1 M.pugnata, 2 A. antilope, 3 A. antilope followed by M. rotundata, 4 A. antilope, 5 M. pugnata followed by M. campanulae, 6 probably M. rotundata. Subsequent observation gave no losses in cavities 3 or 5 ---so blocking is not always a cause of deaths. In cavity 6, 4 bees failed in an unwintered emergence, killing 4 immature siblings in the attempt.Hallett, Peter
DSCN0457BAR214A_scB.JPG.jpg10-Aug-2006BAR stand, block 214, 4.8 mm cavities. From below : Osmia coerulescens, the rest Symmorphus cristatus (identifiable at this stage by the black chrysomelid prey and the tan cell coatings). The Spring emergence of cavity 5 (that with the long mud stopper) failed, leaving 1 unemerged adult and 3 dead immatures.Hallett, Peter
DSCN0458BAR215B_aAB_mAB_mcA_wars.JPG.jpg10-Aug-2006BAR stand, block 215, 6.4 mm cavities. From below: cavity 1 Symmorphus cristatus, 2 leaf-roller then M.campanulae, 3 S. cristatus then M.campanulae, 4 S. cristatus with Chrysis parasitoid, 6 leaf-roller. The leaf-rollers are probably M. relativa. The inner nest in cavity 2 was slightly cut back and died without developing adults. Cavity 3 was not a conflict, as the single immature was killed by a bombyliid, which failed to emerge.Hallett, Peter
DSCN0716MB215-b2_mAB_mcA_war.JPG.jpg25-Jan-2007BAR stand, block 215, 6.4 mm cavities. Nesting conflicts. Note intrusion of mud Potter Wasp walls in cavities 5 and 6 up, transitions from mud walls to resin in 3 up and from resin to grass walls in 2 up. Species are Megachile probably relativa, Symmorphus cristatus, Megachile campanulae (resin user), Isodontia mexicana.Hallett, Peter
DSCN0459BAR216C_scB_mAB_war.JPG.jpg10-Aug-2006BAR stand, block 216, 8.0 mm cavities. From below: cavity 1 probably Megachile relativa, 2 3 + 4 Isodontia mexicana, 5 a nest of M, pugnata emptied and filled with probably M. rotundata. The Isodontia nest in 3 fell to Osmia lignaria in the Spring of 2007.Hallett, Peter
DSCN0460BAR217B.JPG.jpg10-Aug-2006BAR stand, block 217, 6.4 mm cavities. Species upwards: Megachile relativa, Symmorphus cristatus, M. rotundata. The blocking of the inner S. cristatus by M. rotundata in cavity 5 up was not counted as a nesting conflict because both were killed by Melittobia.Hallett, Peter
DSCN0461BAR218A.JPG.jpg10-Aug-2006BAR stand, block 218, 4.8 mm cavities. Cavity 1 up is interesting because both the inner Symmorphus cristatus and the outer Osmia coerulescens emerged without apparent losses (probably the outer emerged first). Initially, in cavity 5, the inner Symmorphus nest was cut back and blocked. Ultimately its adults, and their bombyliid parasitoid, penetrated the outer M. rotundata nest, but neither nest survived to emerge.Hallett, Peter
DSCN0686MB325-b5_detail.JPG.jpg13-Dec-2006BAR stand, block 323, 6.4 mm cavities. Detail.Hallett, Peter
DSCN0685MB323-b5_detail.JPG.jpg13-Dec-2006BAR stand, block 323, 6.4 mm cavities. Detail.Hallett, Peter
DSCN0684MB323-b5_mAB_aAB_or_olA_war.JPG.jpg13-Dec-2006BAR stand, block 323, 6.4 mm cavities. The continuous mud walls between the leaf-roller cells speak of Megachile and Osmia lignaria alternately working the cavity.Hallett, Peter
DSCN0469BAR314BolA_db_mcA_rb.JPG.jpg15-Aug-2006BAR stand, block 324, 4.8 mm cavities. Cavities 1, 6, 7 up, Osmia lignaria; rest, Megachile campanulae. A single Osmia lignaria cocoon was present in May in cavity 3 up but presumably removed by the later M. campanulae nester.Hallett, Peter
DSCN0689MB327_detail.JPG.jpg13-Dec-2006BAR stand, block 327, 4.8 mm cavities.Hallett, Peter
DSCN0687MB327_detail.JPG.jpg13-Dec-2006BAR stand, block 327, 4.8 mm cavities. Detail 1.Hallett, Peter
DSCN0688MB327-b5_partialBombylid_emergence.JPG.jpg13-Dec-2006BAR stand, block 327, 4.8 mm cavities. Main picture. Entombed Ancistrocerus Potter Wasp at top, emerged and immature Bee Flies (Anthrax irroratus) below it.Hallett, Peter
DSCN0491-b4_detail_middle1.JPG.jpg16-Aug-2006BAR stand, block 327, 8.0 mm cavities. Detail.Hallett, Peter
DSCN0490BAR327C-b4_imA-olA_war.JPG.jpg16-Aug-2006BAR stand, block 327, 8.0 mm cavities. Mostly Osmia lignaria with dead adults in a blocked Isodontia mexicana nest.Hallett, Peter
DSCN0479detail_dead_imA.JPG.jpg16-Aug-2006BAR stand, block 333, 6.4 mm cavities. Detail of the dead sphecid, Isodontia mexicana.Hallett, Peter
Showing results 147 to 166 of 756