Note

Ancistrocheirus lesueurii: Description of the upper beak

Richard E. Young

About anaglyph 3D: Photographs here are in 3D, using anaglyph techniques which combines two photographs one in red and the other in cyan (blue + green) color. To get the 3D effect, you must use glasses with red and cyan lenses (filters) over your regular glasses. The form of the beak is far easier to interpret in 3D and we strongly recommend to the viewer that the glasses be obtained (this is especially helpful when viewing enlarged images - i.e. click on the image). These beak photographs were made using Red and Cyan Anachrome Aviator Glasses (see: http://www.anachrome.com/glassbuy.htm or http://www.amazon.com) which cost under $10.00 (USD).

About A. lesueurii upper beak:

    1. Shape: Normal, but with high hood.
    2. Shoulder: Bipartite construction (see xxx). Thick, broad, irregular "white line" over much of shoulder blade in young.
    3. Rostrum: Thick (in profile) (CL/RT: x¯= 7.2).
    4. Pallet: Lateral wall ridges may extend to near rostral tip. Pallet medial to lateral-wall ridges nearly flat.
    5. Crest: Crest without rounded ridges beneath hood.
    6. Hood: Hood rises high off crest (CL/HE: x¯= 4.3)
    7. Lateral wall: Moderate posterior lobe and anterior free-corner.

     
     
     

      A. lesueurii, ML and sex unknown, 1.8 mm URL,
    Hawaiian waters. Photographs by R. Young.
    A. lesueurii, 80 mm (estimate) ML, sex
    unknown, 2.0 mm URL, Hawaiian waters.
    Photographs by R. Young.
    A. lesueurii, ? ML, ? sex unknown, 2.9 mm
    URL, Hawaiian waters. Photographs by R. Young.  
    A. lesueurii, ? ML, ? sex unknown, 3.5 mm
    URL, Hawaiian waters. Photographs by R. Young.   
    A. lesueurii, ? ML, ? sex unknown, 3.6 mm
    URL, Hawaiian waters. Photographs by R. Young. 
    A. lesueurii, mature female, unknown ML, 5.7 mm
    URL, Hawaiian waters. Photographs by R. Young.

     
     
     
     
     
     
     

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    Comments

    Description of the lower beak can be found here. 

About This Page


University of Hawaii, Honolulu, HI, USA

Correspondence regarding this page should be directed to Richard E. Young at

Page: Tree of Life Ancistrocheirus lesueurii: Description of the upper beak Authored by Richard E. Young. The TEXT of this page is licensed under the Creative Commons Attribution-NonCommercial License - Version 3.0. Note that images and other media featured on this page are each governed by their own license, and they may or may not be available for reuse. Click on an image or a media link to access the media data window, which provides the relevant licensing information. For the general terms and conditions of ToL material reuse and redistribution, please see the Tree of Life Copyright Policies.

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