<p><i>Ceratina arizonensis</i> from the Zuma Canyon in the Santa Monica National Recreation Area in coastal California.  Almost all Ceratina have that white stripe (or some greater embellishment thereof) on their face and are relatively hairless, perhaps because of their lifestyle in the pith of plant stems.
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<b>Photography Information: </b>Canon Mark II 5D, Zerene Stacker, Stackshot Sled, 65mm Canon MP-E 1-5X macro lens,  Twin Macro Flash in Styrofoam Cooler,  F5.0,  ISO 100,  Shutter Speed 200
<a rel="nofollow" class="external text" href="https://www.flickr.com/people/54563451@N08">USGS Bee Inventory and Monitoring Lab</a> from Beltsville, Maryland, USA
2015-04-20 15:21
<a rel="nofollow" class="external text" href="https://www.flickr.com/photos/usgsbiml/17029525739/">Ceratina arizonensis, side2, ca, santa barbara_2015-04-20-12.16.53 ZS PMax</a>