Genus: Megachile Latreille, 1802
Subgenus: Paracella Tkalcu, 1993
Common name: none
Megachile (Paracella) are relatively small bees with black integument, apical bands of white hair on the terga, and white to white-yellow scopa (Michener 2007; Praz 2017). Their body length can vary from 9–13 mm (Michener 2007).
(modified from Michener 2007)
Megachile (Paracella) may be confused with bees within the subgenus Megachile (Eutricharaea) because females of both subgenera often have apical bands of hair beneath the scopa on the sterna, four-toothed mandibles with an orange tuft of hair near the first tooth, and males are similar color and size and have a short tooth or projection on the front coxa (Michener 2007). Female Megachile (Paracella) can be separated from Megachile (Eutricharaea) by the cutting edges in the second and third interspaces; males can be separated by their four-toothed mandibles and the lack of a basal projection on the lower margin of the mandible (Michener 2007).
Megachile (Paracella) have been observed visiting Acanthaceae, Asteraceae, Fabaceae, Hydrangeaceae, Lamiaceae, Lythraceae, and Poaceae (Kakutani et al. 1990; Gikungu 2006; Stanley et al. 2016; Wong 2018).
Megachile (Paracella) construct nests in pre-existing cavities between rocks or in burrows in the soil. Nest cells are comprised of leaf fragments and layers of petals (Ferton 1920).
Megachile (Paracella) consists of 45 described species (Ascher and Pickering 2020); none are known to occur in the U.S. or Canada.
There are no known invasives.
Megachile (Paracella) are found primarily in sub-Saharan Africa, but some species can also be found in the Mediterranean and eastern Asia from India to Indonesia (Michener 2007).