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At the end of each Major League Baseball season, the league leaders of various statistical categories are announced. Leading either the American League or the National League in a particular category is referred to as a title.
AFI's 100 Years...100 Stars is the American Film Institute's list ranking the top 25 female and 25 male greatest screen legends of American film history and is the second list of the AFI 100 Years... series.
The cosmopolitan bee genus Ceratina, often referred to as small carpenter bees, is the sole lineage of the tribe Ceratinini, and is not closely related to the more familiar carpenter bees. The genus presently contains over 300 species in 23 subgenera. They make nests in dead wood, stems, or pith, and while many are solitary, a number are subsocial, with mothers caring for their larvae, and in a few cases where multiple females are found in a single nest, daughters or sisters may form very small, weakly eusocial colonies. One species is unique for having both social and asocial populations, Ceratina australensis, which exhibits all of the pre-adaptations for successful group living. This species is socially polymorphic with both solitary and social nests collected in sympatry. Social colonies in that species consist of two foundresses, one contributing both foraging and reproductive effort and the second which remains at the nest as a passive guard. Cooperative nesting provides no overt reproductive benefits over solitary nesting in this population, although brood survival tends to be greater in social colonies. Maternal longevity, subsociality and bivoltine nesting phenology in this species favour colony formation, while dispersal habits and offspring longevity may inhibit more frequent social nesting in this and other ceratinines.
Diadasia is a genus of bees in family Apidae. Species of Diadasia are oligolectic, specialized on a relatively small number of plant species.
Macrotera is a genus of bees native to North America, particularly diverse in the desert regions of the United States and Mexico. According to Wilson and Carril, there are "around 30" species of Macrotera. Macrotera are small to medium sized and often black or reddish in coloration. The genus was treated by P.H. Timberlake who, in addition to T.D.A. Cockerell, described most of the known species. Macrotera used to be considered part of the genus Perdita but was split apart by C.D. Michener in 2000. Most species are extreme specialists (oligoleges) with respect to pollen and will only collect pollen from a few closely related species or genera of plants, particularly the plant genus Sphaeralcea and various Cactaceae.
Calliopsis is a genus of panurgine bees in the family Andrenidae. There are over 80 described species distributed throughout the western hemisphere.
Epeolus is a genus of cuckoo bees in the family Apidae. They are often known as variegated cuckoo-bees.
Dianthidium is a genus of leafcutter, mason, and resin bees in the family Megachilidae. There are at least 20 described species in Dianthidium.
References
- ↑ "Perdita Genus Information". BugGuide.net. Retrieved 2018-02-27.
- ↑ "Perdita Report". Integrated Taxonomic Information System. Retrieved 2018-02-27.
- ↑ "Perdita Overview". Encyclopedia of Life. Retrieved 2018-02-27.
- ↑ "Browse Perdita". Catalogue of Life. Retrieved 2018-02-27.
- 1 2 3 4 5 6 7 8 9 10 11 12 "Standardized Common Names for Wild Species in Canada". National General Status Working Group. 2020.