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Panurgus banksianus

A close-up profile shot of a Banks's Panurgus (Panurgus banksianus) perched in the center of a bright yellow flower. The ground-dwelling bee

James Lindsey at Ecology of Commanster, CC BY-SA 2.5 <https://creativecommons.org/licenses/by-sa/2.5>, via Wikimedia Commons

Appearance

They proudly display their black coloration and are medium-sized, measuring between 10 mm and 12 mm. She is black and brown. However, here and there, alternating brown and black stripes run along her abdomen. Her wings are a translucent brown. She certainly isn’t the hairiest member of the Andrenidae family. Admittedly, the upper parts of its hind and middle legs are quite hairy. This characteristic makes it one of the few species with legs specially adapted for collecting pollen. This is much less true of its thorax and head. Given that, it’s best to remain humble.

Hatching, Nesting, and Reproduction

They hatch between June and August. The female often builds a nest in sandy soil, pastures, meadows, steppes, agricultural areas, cultivated fields, and gardens where the young can grow up safely. The reproductive cycle then follows its course (eggs, larvae, nymphs, adults).

Socialization, Housing, and Nutrition

This species is no more sociable than its counterparts. The larvae are found in the nest, usually in sandy areas. As adults, they are found more specifically in areas rich in pollen and nectar. They feed exclusively on nectar and pollen both as larvae and as adults. In fact, it packs its hairy legs so full of pollen to feed its young that some inadvertently spills onto the flowers, which aids in plant pollination. Like Calliopsis, Panurgus banksianus prefers Asteraceae. Its favorite are bright yellow flowers.

Predators

Birds, rodents, and spiders are delighted at the prospect of feasting on this type of bee while it is still in the larval stage. As an adult, Panurgus mainly attracts the attention of Cercerys rybyensis wasps.

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Sources​

 

  • Morphology and Size (10–12 mm):

    • Atlas of Swiss Fauna (info fauna): Confirms the size of 10–12 mm, the shiny black body, and the characteristic orange-yellow hairs on the legs (scopa) in females.

    • BWARS (Bees, Wasps & Ants Recording Society): Describes the "scantily-haired" appearance of the body in contrast to the very hairy hind legs.

  • Habitat and Nesting (Sandy Soils):

    • Atlas Hymenoptera (Belgium): Specifies that the species is univoltine (June through August) and prefers open habitats, meadows, and sandy or clay soils for digging its burrows.

    • Manche-Nature (L'Argiope No. 90): Reports on colonies nesting in bare, compacted soil and even in community gardens (gravel).

  • Nutrition and Specialization (Asteraceae):

    • Eurac Research (BEEhold): Confirms that this is an oligolectic species, specializing in yellow flowers of the Asteraceae family (Cichorioideae subfamily), such as hawkweeds (Hieracium).

  • Predators and Parasites:

    • Commanster.eu: Explicitly lists the digger wasp Cerceris rybyensis as a major predator of this bee.

    • BWARS: Also lists the bee cuckoo *Nomada similis* as the primary kleptoparasite (food thief).

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