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Photo#1342371
Xylophagidae, Xylophagus perhaps lugens, under tree bark - Xylophagus

Xylophagidae, Xylophagus perhaps lugens, under tree bark - Xylophagus
Plymouth Rock, Winneshiek County, Iowa, USA
February 23, 2017
February 23, 2017: found this larva under bark of Quaking Aspen, Populus tremuloides, but did not get a close up photo
It looked like this

Both larvae had a marking, what I describe as a 2 legged tick
.
But I don't know if other species larvae have a similar/same marking

February 26, 2017: it has already pupated

Images of this individual: tag all
Xylophagidae, Xylophagus perhaps lugens, under tree bark - Xylophagus Xylophagidae, larval exuviae - Xylophagus Xylophagidae, pupa, ventral - Xylophagus Xylophagidae, pupa, ventralX - Xylophagus Xylophagidae, pupa, ventralX - Xylophagus Xylophagidae, dorsal - Xylophagus Xylophagidae, spent pupa, dorsal - Xylophagus Xylophagidae, spent pupa, lateral - Xylophagus

Moved
Moved from Xylophagus.

Moved
Moved from larvae.

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