Megachile

Subgenus Litomegachile Mitchell, 3 species

    This subgenus includes three of the most common species of Megachile in Florida. These are ground and stem-nesting bees, polylectic, and fly throughout most of the season.

Key to females of Litomegachile

  1. Mandibles angulate between third and fourth teeth; Sixth tergum straight in profile, the pubescence usually appressed; scopa yellowish…M. mendica
  2. megmandclose.GIF (516769 bytes) megmenabdside.GIF (328852 bytes) megmenabdside2.GIF (311060 bytes)

    Mandible not angulate between third and fourth teeth; sixth tergum usually quite distinctly concave in profile, with abundant erect black hair visible…2.

    megbremandclose.GIF (474359 bytes) megtexmandclose.GIF (472137 bytes) megbresideabd.GIF (195375 bytes) megtexabdside2.GIF (373749 bytes) megbreabdtop.GIF (260906 bytes) megtexabdtop2.GIF (421443 bytes)

  3. Second, third, and fourth terga with conspicuous black hairs visible laterally in dorsal aspect. .M. texana

megtexabdtop2.GIF (421443 bytes)

Second, third, and fourth terga with only pale hairs visible laterally in dorsal aspect. .M. brevis

megbretop3.GIF (345692 bytes)

Key to males of Litomegachile

  1. Median teeth of apical margin (not carina) of sixth tergum nearer to each other than to lateral teeth or these distance subequal…M. mendica.
  2. megmengenital2.GIF (394301 bytes)

    Median teeth of the sixth tergum definitely nearer the lateral teeth than to each other…2.

    megtextergum3.GIF (360184 bytes)

  3. Carina of sixth tergum definitely and quite deeply emarginate medially. M. texana

megtextergum.GIF (362308 bytes)

Carina of sixth tergum with at most an indefinite median emargination which is often indistinguishable from the more lateral irregular crenulations. .M. brevis

megbretergum6.GIF (347407 bytes)

 

Megachilidae: Megachile brevis (includes M. brevis brevis Say and M. brevis pseudobrevis Mitchell)

County Records: I do not have any from FSCA. For M. brevis brevis, Mitchell lists Miami-Dade, Walton, Escambia; For M. brevis pseudobrevis, Mitchell lists Miami-Dade.

megbre.gif (16791 bytes)

Locations: M. brevis brevis: DeFuniak Springs, Biscayne Bay, Miami, Lakeland, Pensacola; M. brevis psuedobrevis: Cutler, Miami, Silver Palm, Hollywood, Miami Beach, S. Miami, Crestview, Homestead

Dates: March-November

Plants: Polylectic, but especially Asteraceae, Fabaceae, and Lamiaceae

Notes: Variable in nesting habit. Both soil and stems used. Mitchell splits out a southeastern form called Megachile brevis pseudobrevis (females, scopa of sixth sternum entirely black versus pale at least in part in brevis and in males, pubescence of abdomen black in part vs. entirely pale). Nearly all of our specimens conform to this subspecies.

Female

megbreface.GIF (317201 bytes) megbrefaceclose.GIF (403677 bytes) megbremand.GIF (389546 bytes) megbremandclose.GIF (474359 bytes) megbrevertex.GIF (387589 bytes)

megbretop.GIF (292611 bytes) megbretop2.GIF (273564 bytes) megbretop3.GIF (345692 bytes) megbreside.GIF (205066 bytes) megbresideabd.GIF (195375 bytes)

megbresideabd2.GIF (239809 bytes) megbreabdside.GIF (385489 bytes) megbreabdtop.GIF (260906 bytes) 

Male

megbreface.GIF (362881 bytes) megbrewing.GIF (330356 bytes) megbremand.GIF (352455 bytes) megbremandclose.GIF (464370 bytes) megbrescutum.GIF (432447 bytes)

megbreabdtop.GIF (358620 bytes) megbreabdtop2.GIF (376709 bytes) megbreside.GIF (350398 bytes) megbreside2.GIF (342214 bytes) megbretergum6.GIF (347407 bytes) megbretergum62.GIF (374033 bytes) megbregenital.GIF (476047 bytes) megbregenital2.GIF (395572 bytes) megbregenitalclose.GIF (445513 bytes) megbregenitalclose2.GIF (487789 bytes)

 

Megachilidae: Megachile mendica mendica Cresson

County Records: I do not have any from FSCA; Mitchell lists Miami-Dade, Jefferson, Walton

megmen.gif (17025 bytes)

Locations: Mitchell lists DeFuniak Springs, Monticello, Miami, Cedar Keys, Crestview, Deep Lake, Homestead

Dates: nearly all year

Plants: Polylectic, but especially Asteraceae, Fabaceae, and Lamiaceae

Notes: Nests primarily in wood.

Female

megmenface.GIF (415033 bytes) megmenmand.GIF (426733 bytes) megmenmand2.GIF (388897 bytes) megmandclose.GIF (516769 bytes) megmentop.GIF (376827 bytes)

megmentopabd.GIF (401058 bytes) megmenside.GIF (350552 bytes) megmenside2.GIF (380755 bytes) megmenabdside.GIF (328852 bytes) megmenabdside2.GIF (311060 bytes)

Male

megmenface.GIF (355463 bytes) megmenmand.GIF (400247 bytes) megmenmandclose.GIF (524683 bytes) megmenmandclose2.GIF (478899 bytes) megmenabd.GIF (397821 bytes)

megmenside.GIF (348461 bytes) megmentergum.GIF (399202 bytes) megmengenital.GIF (389550 bytes) megmengenital2.GIF (394301 bytes) megmengenital3.GIF (467824 bytes)

 

Megachilidae: Megachile texana Cresson

County Records: Alachua, Highlands, Gulf, DeSoto, Putnam, Escambia, Liberty, Clay, Nassau, Wakulla, Monroe, Miami-Dade, Bay, Leon; Mitchell also records it from Duval.

megtex.gif (16913 bytes)

Locations:

Dates: May-Sept.

Plants: Polylectic, but especially Asteraceae, Fabaceae, and Lamiaceae

Notes: Soil nesting species.

Female

megtexface.GIF (396979 bytes) megtexmand.GIF (370553 bytes) megtexmandclose.GIF (472137 bytes) megtexvertexside.GIF (374048 bytes) megtexside.GIF (351418 bytes)

megtexabdside2.GIF (373749 bytes) megtexabdtop.GIF (405823 bytes) megtexabdtop2.GIF (421443 bytes) megtextop2.GIF (395620 bytes) megtextop.GIF (391799 bytes)

 

Male

megtexface.GIF (433561 bytes) megtexmand.GIF (432727 bytes) megtexmandclose.GIF (504699 bytes) megtexvertex.GIF (376474 bytes) megtextop.GIF (398231 bytes)

megtexscutum.GIF (449083 bytes) megtexside.GIF (342509 bytes) megtextergum.GIF (362308 bytes) megtextergum2.GIF (377097 bytes) megtextergum3.GIF (360184 bytes)

megtexgenitals.GIF (333554 bytes) megtexgenitals2.GIF (325904 bytes) megtexgenitals3.GIF (503038 bytes)