Melanosmia

Genus Osmia

Subgenus Melanosmia Schmiedeknecht, 5 taxa

This includes species previously placed in the subgenera Nothosmia, Centrosmia, and Chenosmia.

Key to females

Scopa white....3

2. Abdominal terga 3-5 with conspicuous, erect black pubescence; clypeus fuscous or black pubescent....Osmia collinsiae

Pubescence of abdominal terga and clygeus entirely pale, or with only very inconspicuous darker hairs....Osmia atriventris

3. Clypeus with uniformly short hairs....Osmia calaminthae

Clypeus with curved elongate hairs....4

4. Punctures coarse and confluent over most of scutum and scutellum....Osmia sandhouseae

Punctures of scutum and scutellum relatively fine and distinct, not confluent, at least in center of disc....Osmia pumila

Key to males

1. Teeth of T7 relatively slender, pointed, basally about one-fourth the width of the midapical emargination (Photo Fig 22 in Rightmyer et al. 2011)....Osmia calaminthae

Teeth of T7 short and dull....2

Osmia sandhouseae

Punctures of scutum close, but distinct, the narrow interspaces shining....3

3. Median emargination of sternum 3 completely filled by the marginal fringe, the hairs converging along mid-line....Osmia atriventris

Median emargination of sternum 3 not filled by the marginal hairs, hairs relatively short....4

4. Sternum 4 with a distinct, median, impunctate furrow dividing the setose area into right and left halves....Osmia collinsiae

Sternum 4 without such a median furrow....Osmia pumila

Megachilidae: Osmia atriventris Cresson

County Records: Alachua, Jackson, Wakulla

Locations: Gainesville, San Felasco Hammock Preserve State Park

Dates: March April

Plants:

Notes: Photos of males by HGH are of specimens from Louisiana.

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Megachilidae: Osmia calaminthae Rightmyer, Deyrup, Ascher and Griswold

County Records: Highlands

Locations: Lake Placid

Dates: March

Plants: Calamintha ashei

Notes:

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Megachilidae: Osmia collinsiae Robertson

County Records: Alachua

Locations: Paynes Prairie Preserve State Park

Dates: March

Plants:

Notes: All photos of females and photos of males 3, 8-16, 18, 19 by HGH are specimens from Louisiana

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Megachilidae: Osmia pumila Cresson

County Records: None from Florida

Locations:

Dates:

Plants:

Notes: This species may be present in northern Florida. It has been collected in Georgia in Thomas County, a short distance from Leon County, Florida. Photographs by HGH are of a Louisiana specimen.

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Megachilidae: Osmia sandhouseae Mitchell

County Records: Alachua, Baker, Columbia, Jackson, Leon, Levy, Putnam

Locations: Gainesville, Goethe State Forest, Hawthorne, Paynes Prairie Preserve State Park, Ordway-Swisher Biological Station, San Felasco Hammock Preserve State Park, University of Florida Natural Area Teaching Laboratory

Dates: Feb - May

Plants:

Notes

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