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European species
Loxocera aristata (Panzer, 1801)
Nomenclature
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Tribe: LoxoceriniGenus: Loxocera
SUMMARY
Identification: This species differs externally from all other Palaearctic species of the genus by the entirely black face and the whitish-yellow, or brownish-yellow, triangular spot below the eye. It is also characterized by the specific structure of the terminalia (Friedberg & Shatalkin 2008).
Face below antennae black
Frons - (dorsal surface of head) black, may have a small dark orange spot anterior to the ocellar triangle
Head profile - black except for a small yellow patch below and adjoining the eye (this area is the gena); adjoining this patch posteriorly (on the occiput) and running from the eye to the mouth is a "shimmering stripe" (view obliquely from behind) comprising white hairs (which exhibit a good deal of variation in size in the specimens examined, ranging from just a shimmer hinting of white hairs to fairly long, clearly defined white hairs) Termed "postgenal stripe" (see Malcolm Storey's image)
(Sumner, 2008)
Distribution
Europe: Countries (published), online at Fauna Europaea, Occurrences at GBIF
UK: Recording Scheme map of occurrences 2016 (verified.) Online (NBN Atlas) via Easy maps or Interactive Atlas