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  • In general, bee mite identification is something for specialists but you might try a couple of these sites for some tools: idtools.org/id/mites/beemites/factsheet.php?name=15138 Bee Mites: Systematics and ecology of North American bee-associated mites Bee Mites: Systematics and ecology of North American bee-associated mites Information on a project to study mites which affect or...
    Jack Neff May 21
  • If they overwinter as imagoes you're doomed since you won't be able to tell a live one from a fresh corpse with x-ray. Dead prepupae slowly deflate (shrivel up) but that also might be hard to detect if fairly fresh. You'll have to make comparisons with x-rayed nests followed by nest dissections for your particular systems. Jack John L. Neff Central Texas Melittological Institute...
    Jack Neff May 19
  • You might want to check Gerling et al, 1981 "In-nest behavior of the carpenter bee, Xylocopa pubescens Spinola (Hymenoptera: Anthophoridae)" Journal of the Kansas Entomological Society 54: 209-218 . It was an X-ray study and they give methodological specifics. I don't have a pdf but it is available on line through JSTOR. John L. Neff Central Texas Melittological Institute 7307...
    Jack Neff May 18
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  • Kit: Bees that construct strong cocoons, like yours, usually can survive in a a cocoon outside the nest, at least under lab conditions. Not clear what happened in your case but it looks like the nest was not plugged properly and perhaps some of the outer partitions were missing. In any case, three of your 5th instar larvae ended up outside the tube and when they attempted to spin a...
    Jack Neff May 12
  • Yes, although most of the observations are annecdotal. See Danforth, 1999. Emergence dynamics and bet hedging in a desert bee, Perdita portalis. Proceedings of the Royal Society of London B 266:1985-1994 for an interesting experimental study. best Jack John L. Neff Central Texas Melittological Institute 7307 Running Rope Austin,TX 78731 USA 512-345-7219 On Thursday, May 11, 2017 9...
    Jack Neff May 11
  • You might want to look at the methods in Meindl & Ashman, 2013 "The effecdt of aluminium and nickel in necdtar on the foraging behaviour of bumblebees" Environmental Pollution 177:78-81 2013. also by the same authors "Effects of floral metal accumulation on floral visitor communities: introducing the elemental filter hypothesis. 2015. American Journal of Botany 102: 379-389 John L...
    Jack Neff Apr 4
  • Do you want a pupa or a prepupa (a defecated larva)? The latter is the usual overwintering stage. Either would normally be within a cell rather than the burrow. Jack John L. Neff Central Texas Melittological Institute 7307 Running Rope Austin,TX 78731 USA 512-345-7219 On Friday, March 17, 2017 12:15 PM, "'Watkins, Wedge' Wedge_Watkins@^$1 [beemonitoring]" wrote: I am working on an...
    Jack Neff Mar 17
  • Sam: You might want to reconsider your Pithoteria since it looks suspiciously like a parasite feeding station. Low parasitism rates in Ceratina (an obligate pith nester) have been attributed to the mother guarding the nest entrance as the brood develops, and low natural nest density. see (Daly et al, 1967 Natural enemies of bees of the genus Ceratina (Hymenoptera: Apoidea) Annals...
    Jack Neff Mar 8
  • Foeniculum (fennel) is another pith nesting favorite but old stems are unlikely to by retained by aethetically minded gardeners. John L. Neff Central Texas Melittological Institute 7307 Running Rope Austin,TX 78731 USA 512-345-7219 On Saturday, March 4, 2017 4:05 PM, "'Droege, Sam' sdroege@^$1 [beemonitoring]" wrote: Hi Jess...Successful post! So it looks like creating or retaining...
    Jack Neff Mar 4
  • Ceratina and some Hoplitis-particularly subgenus Alcidamea-almost exclusively use pithy stems. Alcidamea are not super picky about stem orientation and commonly are associated with vertical stems. Rubus is well known as a nest site for these things but almost anything with a pithy stem could be used. Jack John L. Neff Central Texas Melittological Institute 7307 Running Rope Austin...
    Jack Neff Mar 4