At a magnification twice that of PHIL 9932, 765X, this scanning electron micrograph (SEM) revealed even more of the morphologic details found at the tip of this adult 'figeater' beetle's, Cotinis mutabilis, maxillary 'galea', which due to its shape, was given this Latin name for 'helmet'. The galea is located just medial to another, more prominent maxillary appendage, the palpus. Note the concave configuration at the distal tip of the galea, and how there are numerous pointed protuberances inside this concavity, which are most probably sensorial in nature. See PHIL 9934 for an additional view of this structure at an even greater magnification.
December 4, 2012
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