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Hylaeus · plikabitė

EN · yellow-faced bees, masked bees DE · Maskenbienen LV · zīdbite PL · samotka

https://en.wikipedia.org/wiki/Hylaeus_(bee) This genus of bees consists of generally small, black and yellow/white wasp-like species. The resemblance to wasps is enhanced by the absence of a scopa, which is atypical among bees. The body form of this genus is described as hylaeiform - slender, the hairs inconspicuous without magnification. They are usually black with bright yellow or white markings on their face and legs. These markings are more pronounced on the males. This group is called "Masked Bees" because of the small yellow diamond shaped markings on their faces.

Hylaeus carry pollen in the crop, rather than externally, and regurgitate it into the cell where it will be used as larval food. Like most colletids, the liquid provisions are sealed inside a membranous cellophane-like cell lining.

Nests are typically in dead twigs or plant stems, or other similarly small natural cavities, rather than constructing or excavating their own nests as in many other bees.