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P. E. Hallett (2011) Farmed Solitary Bees & Wasps, Data Set (generations 1997-2008) >
03.0 Museum >

03.02 Spreadsheets associating nest labels with species names

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This workbook lists all associations of nest-labels and species. Its page LABELS was used by programs in 04.02 that translate nest labels to species names. Because nest appearances have been highly differentiated it is always possible for the user of the Data Set to retroactively pool unwanted distinctions (e.g., in 'SUMMARY OF NEST COUNTS BY FATE' in 11.01).

Examples Three such cases are recognized. (1) Two different bee nests of rolled leaf cuttings (originally a single nest label ll) have been split where possible (to labels ll, llb, lls) and analyzed as different mixtures of at least two Megachile Leafcutter Bees. Ultimately, successful hatches and adult identifications were few, so unless more hatches are made these three leaf-roller labels are best lumped into the 'Megachile species group AB'. (2) The two small Symmorphus Potter species are quite well, but not completely, separated into S. canadensis and narrow nests of S.cristatus; whether the corresponding nest labels need pooling to a single 'Symmorphus species group' must depend very much on the particular question being posed. (3) In contrast, nests attributed to the larger Potter Ancistrocerus antilope have proved so infrequently to be those of any other species (at least for these years and localities) that to have called these nests the 'Ancistrocerus antilope species group', rather than Ancistrocerus antilope, was too conservative.

NB. As nesting species are relatively few, and the nests have been frequently inspected and observed for years with almost no unusual adults being spotted, it is believed that adequate numbers of nests have been hatched for species identification. An alternative approach, hatching all nests and returning only surviving identified adults to the field, has some advantages, but is difficult with large numbers of nests and does not allow spatial questions, like the location of new nests relative to the old.

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