Callandrena

Andrena

Subgenus Callandrena (5 species)

Includes 3 fall flying species (A. accepta, A. asteroides, and A. fulvipennis) and 2 spring-flying species (A. gardineri and A. krigiana). LaBerge places each of these species into separate species groups. These subgenus has unusually short maxillary palpi in both sexes. These are usually shorter than the galea when stretched forward. Females have highly plumose tibial scopal hairs, flattened emarginate labral process, and narrow pterostigma. Males have the narrow pterostigma, yellow clypeus, often with yellow parocular areas, and flat emarginate labral process. Both sexes lack the pronotal humeral angles and ridges, usually with tergal fasciae, and finely sculptured propodeal enclosures.

For more information, see LaBerge, Wallace E. 1967. A revision of the bees of the genus Andrena of the Western Hemisphere. Part I. Callandrena (Hymenoptera: Andrenidae). Bulletin of the University of Nebraska State Museum 7:1-316.

Key to Females of Callandrena

Hind tarsal claws distinctly smaller than middle and fore tarsal claws; mandible abruptly narrowed about one-third distance from base, least width (near mandible) equal to half or less of greatest width (near base); fore wings deeply infumate, dark blackish-brown…A. fulvipennis Smith

Hind tarsal claws as large as or larger than fore and middle tarsal claws; mandible usually not abruptly broadened near base (without basoventral lamella), or if so, then fore wings not deeply infumate, clear to moderate infumation….2

Propodeal corbicula with interior free of hairs or with several long hairs restricted to dorsoposterior third, or with minute hairs scattered over surface, anterior margin without long plumose hairs…A. krigiana Robertson

---Propodeal corbicula with interior with long simple or plumose hairs scattered throughout or concentrated in upper half or anterodorsal area, if anterior without long hairs, then anterior margin with long plumose hairs (corbicula complete)…..3

Clypeus and/or parocular areas with yellow or cream-colored markings…A. accepta Viereck

---Clypeus and parocular areas black….4.

Small to medium sized bees (11mm or less in length), facial fovea short, not extending down beyond level of upper margins of antennal fossa, spring-flying species…A. gardineri Cockerell

---Medium-sized to large bees, usually 11mm or more in length, or if smaller, than facial fovea extends down to about lower margins of antennal fossa (fovea often short in larger forms); fall-flying species…A. asteroides Mitchell

Key to males of Callandrena in Florida (from Mitchell)

1. With conspicuous yellow maculae between clypeus and eye...2

Lateral face marks either lacking or with mere traces of yellow along clypeal margin which do not extend to margin of eye...3

2. Lateral face marks large, extending to level of antennae...A. accepta

Lateral face marks small, not nearly attaining level of upper margin of clypeus...A. fulvipennis

3. Basal segment of flagellum considerably shorter than segments 2 and 3 combined..A. asteroides.

Basal segment of flagellum nearly or quite equal in length to segments 2 and 3 combined..4

4. Lateral angles of sternum 6 strongly reflexed...A. gardineri

Lateral angles of sternum 6 not reflexed...5

5. Lateral and upper margins of clypeus dark; segments 2-4 of flagellum very short, their combined length not much exceeding the basal segment...A. krigiana

Clypeus entirely yellow; at least 4th segment of flagellum fully as long as broad..A. fulvipennis

Note depending on the extent of the clypealocular maculation, A. fulvipennis comes out twice in the key.

Andrenidae: Andrena (Callandrena) accepta Viereck

County Records: Leon

Locations: Tall Timbers Research Station

Dates: Oct. 16-Nov. 7.

Plant:

Notes: New state record for Florida, prev. collected in Georgia. This is one of three fall-flying Callandrena.

Female:

Male:

Andrenidae: Andrena (Callandrena) asteroides Mitchell

County Records: Found in Thomas Co, GA, may be found in Florida

Locations:

Dates: fall flying

Plant: New state record for Georgia

Notes:

Female:

Andrenidae: Andrena (Callandrena) fulvipennis Smith

County Records: Alachua, Baker, Bay, Clay, Columbia, Escambia, Gulf, Leon, Marion, Okaloosa, Putnam, Pasco, Santa Rosa, Volusia, Wakulla

Locations: Blackwater River State Forest, Daytona Beach, Destin, Interlachen, St. Andrews State Park, St. Joseph, St. Marks National Wildlife Refuge, Tall Timbers

Dates: Sept. 11-Nov. 5, Sept.:1, Oct: 13, Nov:2

Plant:

Notes: