| 词条 | Melectini |
| 释义 |
| name = Melectini | image = Cloak and Dagger Cuckoo Bee.jpg | image_caption = Thyreus nitidulus | taxon = Melectini | authority = Westwood, 1839 | subdivision_ranks = Genera | subdivision = 9, see text }} The Melectini are a tribe of medium- to large-sized apid bees found essentially worldwide. They are brood parasites of the related typical digger bees (Anthophorini) and occasionally visit flowers e.g. in prairie landscapes of the United States.[1] As in other cuckoo bees, females can be easily distinguished from those of their hosts by the lack of scopae and other pollen-collecting adaptations, as well as lacking prepygidial fimbria and basitibial plates. Their body hair is rather short and on the abdomen lies flat against the exoskeleton. They may, therefore, be difficult at first glance to distinguish from the Nomadinae, but the details of their wing venation are characteristic: the marginal cell is shorter than the first two submarginal cells, and the second abscissa of vein M+Cu is extremely short, with the cells it connects being almost adjacent to each other. The jugal lobes are very small, less than half as long as the vannal lobes.[1] GeneraThese bee genera belong to the Melectini:[2]
Several of these (Afromelecta, Melecta, and Xenomelecta) have subgenera which some authors may consider independent genera.[2] References1. ^1 Stephen, W.P.; Bohart, G.E. & Torchio, P.F. (1969): The Biology and External Morphology of Bees, With a Synopsis of the Genera of Northwestern America. Oregon State University Press, Corvallis, Oregon. [https://ir.library.oregonstate.edu/dspace/bitstream/1957/2080/5/Morph_Bees_1-67_ocr.pdf PDF fulltext]{{dead link|date=January 2018 |bot=InternetArchiveBot |fix-attempted=yes }} {{commons category|position=left}}{{Taxonbar|from=Q1942008}}2. ^1 Yanega, Doug (2007): Bee Genera of the World. Version of 2007-SEP-31. Retrieved 2008-MAY-06. 2 : Apinae|Bee tribes |
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