Loading ...
Sorry, an error occurred while loading the content.

DiscoverLife guide updates 5/12/2011

Expand Messages
  • Michael Orr
    Hello all, As always, feel free to message me with any questions or comments regarding these characters. The Melitta guide has been updated with the following
    Message 1 of 1 , May 12, 2011
    • 0 Attachment
      Hello all,


      As always, feel free to message me with any questions or comments regarding these characters.

      The Melitta guide has been updated with the following character based upon host plant data, thanks largely in part to Dr. John Ascher and Michez & Eardley 2007:

      Host plant - Make sure that the bee is ACTIVELY VISITING the flower, not simply resting upon the plant and note that both males and females may at times visit other plants for nectar
      Dalea (californica)
      Encelia (californica)
      Lycium (californica)
      Lyonia (melittoides)
      Polycodium (eickworti, melittoides)
      Sphaeralcea (californica)
      Vaccinium stamineum (eickworti)
      Vaccinium - Blueberries (americana)
      Vaccinium - Cranberries (americana)
      Viscainoa (californica)
      Zenobia (melittoides)

      The genus guide has also been updated with the following characters. Keep in mind that only the genera present in the guide are currently scored, so you may not see some genera unlisted that fit these character states:

      Head, tongue, glossa, tip shape
      Simple, pointed or rounded, although usually pointed (all other genera)
      Bilobed or emarginate, either divided into two distinct parts which diverge from one another and come to independent tips or broadly flattened at tip with a dip in the center (Caupolicana, Colletes, Eulonchopria, Hylaeus, Ptiloglossa)

      Female, hindleg, tibia, presence or absence of a corbicula
      Present, the outer face of the rear tibia appearing broadly flattened and HAIRLESS, usually with long hairs around the perimeter of the hairless area (Apis, Bombus, Euglossa, Eulaema, Melipona)
      Absent, hind tibia either with hairs throughout its outer surface or without hairs but not flattened and shiny (all others+Bombus)

      Head, number of subantennal sutures - Note that in some species the inner suture may be weak or partially indistinct, so care should be taken
      1 (non-Andrenids)
      2 (Andrenids)

      Augochlorini vs other Halictid genera - Female, abdomen, T5, presence of a longitudinal medial slit originating on the rim
      Present and the slit equal to at least a third of the longitudinal length of the segment - Note that the slit can often be obscured by hairs, although a pin may be used to move these hairs aside for a better view if necessary (Augochlorines)
      Distinct slit ABSENT, but sometimes very slightly emarginate nonetheless (other Halictids)

      Augochlora vs Pereirapis
      Augochlora - Clypeus nearly entirely metallic green or blue down to the rimĀ - The sutures defining the paraocular lobes along the boundary with the clypeus are clearly acute - The marginal cell of the forewing is apically truncate, often only minutely so
      Pereirapis - Clypeus with a distinct non-metallic apical area which may equal up to half of the length of the clypeus - The paraocular lobes extend down onto the clypeus from the sides with their tips appearing obtuse or right-angled - The marginal cell of the forewing appears pointed on or very near the edge of the wing


      -Michael Orr
    Your message has been successfully submitted and would be delivered to recipients shortly.