Genus Osmia

Subgenus Melanosmia Schmiedeknecht, 5 taxa

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

Key to females

    1. Scopa black....2

    Abdomen - Lateral Side
    Abdomen - Lateral Side

    Scopa white....3

    Abdomen - Lateral Side
    Abdomen - Lateral Side

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

    Abdomen - Lateral Side
    Abdomen - Dorsal Side
    Mandibles Clypeus

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

    Abdomen - Dorsal Side
    Abdomen - Lateral Side

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

    Gena

    Clypeus with curved elongate hairs....4

    Gena Pleura
    Face

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

    Vertex Scutum Scutellum
    Petiole

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

    Vertex Scutum Scutellum
    Petiole

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

    Tergum 7 Spines

    2. Scutum dull, punctures closely crowded....Osmia sandhouseae

    Vertex Scutum Scutellum

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

    Vertex Scutum Scutellum

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

    Terminal Segments - Ventral View

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

    Sterna

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

    Terminal Segments - Ventral View

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

    Sterna

Megachilidae: Osmia atriventris Cresson

County Records: Alachua, Jackson, Wakulla

osmatr.jpg (72468 bytes)

Locations: Gainesville, San Felasco Hammock Preserve State Park

Dates: March April

Plants:

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

Female

Dorsal Habitus
Face
Mandibles Clypeus
Mandibles
Vertex Scutum Scutellum
Vertex
Petiole
Abdomen - Dorsal Side
Terminal Segments - Dorsal View
Lateral Habitus
Gena Pleura
Propodeum - Lateral Side
Abdomen - Lateral Side
Terminal Segments - Lateral View
Ventral Habitus
Head - Ventral View
Head Thorax - Ventral View
Sterna

Male

Dorsal Habitus
Face
Vertex Scutum Scutellum
Vertex
Petiole
Abdomen - Dorsal Side
Terminal Segments - Dorsal View
Lateral Habitus
Gena Pleura
Abdomen - Lateral Side
Terminal Segments - Lateral View
Ventral Habitus
Head - Ventral View
Head Thorax - Ventral View
Sterna
Terminal Segments - Ventral View
Wing

Megachilidae: Osmia calaminthae Rightmyer, Deyrup, Ascher and Griswold

County Records: Highlands

Locations: Lake Placid

Dates: March

Plants: Calamintha ashei

Notes:

Female

Dorsal Habitus
Face
Mandibles Clypeus
Clypeus - Lateral View
Vertex Scutum Scutellum
Petiole
Abdomen - Dorsal Side
Terminal Segments - Dorsal View
Lateral Habitus
Gena Pleura
Abdomen - Lateral Side
Terminal Segments - Lateral View
Ventral Habitus
Head - Ventral View
Head Thorax - Ventral View
Sterna
Terminal Segments - Ventral View
Wing

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

Female

Dorsal Habitus
Face
Mandibles Clypeus
Vertex Scutum Scutellum
Petiole
Abdomen - Dorsal Side
Terminal Segments - Dorsal View
Lateral Habitus
Gena Pleura
Abdomen - Lateral Side
Terminal Segments - Lateral View
Ventral Habitus
Head - Ventral View
Head Thorax - Ventral View
Sterna
Terminal Segments - Ventral View
Wing

Male

Dorsal Habitus
Face
Face
Vertex Scutum Scutellum
Petiole
Abdomen - Dorsal Side
Terminal Segments - Dorsal View
Lateral Habitus
Gena Pleura
Abdomen - Lateral Side
Terminal Segments - Lateral View
Ventral Habitus
Head - Ventral View
Head Thorax - Ventral View
Sterna
Terminal Segments - Ventral View
T7 Spines - Ventral View
Genital Armature - Dorsal Side
Genital Armature - Ventral Side

Megachilidae: Osmia pumila Cresson

County Records: None from Florida

osmpum.jpg (71774 bytes)

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.

Female

Dorsal Habitus
Face
Mandibles Clypeus
Mandibles
Mandibles
Vertex Scutum Scutellum
Vertex
Petiole
Abdomen - Dorsal Side
Terminal Segments - Dorsal View
Lateral Habitus
Gena Pleura
Propodeum - Lateral Side
Abdomen - Lateral Side
Terminal Segments - Lateral View
Ventral Habitus
Head - Ventral View
Head Thorax - Ventral View
Sterna
Terminal Segments - Ventral View
Wing

Male

Dorsal Habitus
Face
Mandibles Clypeus
Vertex Scutum Scutellum
Petiole
Abdomen - Dorsal Side
Terminal Segments - Dorsal View
Lateral Habitus
Gena Pleura
Abdomen - Lateral Side
Ventral Habitus
Head Thorax - Ventral View
Sterna

Megachilidae: Osmia sandhouseae Mitchell

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

osmsan.jpg (73093 bytes)

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

Female

Dorsal Habitus
Face
Mandibles Clypeus
Mandibles Clypeus
Vertex Scutum Scutellum
Vertex
Petiole
Abdomen - Dorsal Side
Terminal Segments - Dorsal View
Lateral Habitus
Gena Pleura
Abdomen - Lateral Side
Terminal Segments - Lateral View
Ventral Habitus
Head - Ventral View
Head Thorax - Ventral View
Sterna
Wing

Male

Dorsal Habitus
Face
Face
Mandibles Clypeus
Vertex Scutum Scutellum
Petiole
Abdomen - Dorsal Side
Terminal Segments - Dorsal View
Lateral Habitus
Gena Pleura
Abdomen - Lateral Side
Terminal Segments - Lateral View
Ventral Habitus
Head - Ventral View
Head Thorax - Ventral View
Hind Coxae
Sterna
Sternum 6
Genital Armature - Dorsal Side
Genital Armature - Ventral Side