Tribe Anthidini

Genus Trachusa Panzer, 3 species

Three species in two subgenera are found in Florida. The subgenus Legnanthidium is monotypic.

These are ground nesting species that make their own burrows, unlike most other Megachilids.

Key to subgenera

    All tagmata with abundant yellow or cream-colored markings, including median tergal bands on metasoma.... T. (Heteranthidium)

    Abdomen - Dorsal Side

    Integument without yellow or cream-colored markings except usually on face of male and on apical metasomal tergal margins.... T. (Legnanthidium)

    Dorsal Habitus

Subgenus Heteranthidium Cockerell, two species

Key to females

    Mandibles and tergum 6 of abdomen entirely black; tubercles carinate....T. crassipes

    Mandibles Proboscis
    Terminal Segments - Dorsal View

    Mandibles and tergum 6 of abdomen yellow maculated; tubercles not carinate....T. fontemvitae

Key to males

    Abdominal sternum 3 with a pair of short, slender spines....T. fontemvitae

    Sterna

    Sternum 3 not spinose....T. crassipes


Megachilidae: Trachusa crassipes Cresson

County Records: Alachua, Levy, Okaloosa

tracra.jpg (72949 bytes)

Locations:

Dates: June 16-August 21; June: 1, July: 3, Aug: 1

Plants: Galactia

Notes: NC to Florida, coastal plain species

Female

Face
Antenna
Mandibles
Proboscis
Vertex
Scutum
Tegula
Propodeum
Abdomen - Dorsal Side
Terminal Segments - Dorsal View
Lateral Habitus
Eye Gena
Legs - Ventral View
Wing
Wing
Legs

Megachilidae: Trachusa fontemvitae Schwarz

County Records: Clay, Highlands, Hillsborough, Marion, Putnam

trafon.jpg (73380 bytes)

Locations: Ordway-Swisher Biological Station

Dates: July, September, October, November

Plants: Balduina angustifolia, Liatris tenuifolia, Phoebanthus

Notes: NC to Florida, coastal plain species.

Female

Dorsal Habitus
Face
Mandibles Clypeus
Vertex Scutum Scutellum
Scutellum on edge
Abdomen - Dorsal Side
Lateral Habitus
Gena Pleura
Propodeum
Propodeal Spiracle and Fovea
Abdomen - Lateral Side
Ventral Habitus
Sterna
Wing

Male

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


Subgenus Legnanthidium Griswold and Michener, 1 species

Megachilidae: Trachusa ridingsii Cresson

County Records: Alachua, Leon, Levy, Miami-Dade, Putnam, Santa Rosa

trarid.jpg (72759 bytes)

Locations: Ordway-Swisher Biological Station

Dates: April 27, August 10-27; April: 1, August: 6

Plants: Rhus glabra, Melilotus alba

Notes: NC to Florida, coastal plain species

Female

Dorsal Habitus
Face
Vertex Scutum Scutellum
Abdomen - Dorsal Side
Lateral Habitus
Gena Pleura
Metapleura
Abdomen - Lateral Side
Ventral Habitus
Sterna

Male

Dorsal Habitus
Face
Mandibles Clypeus
Vertex
Scutum
Tegula
Scutellum
Abdomen - Dorsal Side
Lateral Habitus
Eye
Gena Pleura
Gena Pleura
Hind Leg
Genital Armature - Side
Genital Armature - Dorsal Side
Genital Armature
Genital Armature
Genital Armature - Ventral Side
Wing