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Pseudohemihyalea is a genus of arctiine tussock moths in the Erebidae family. While the caterpillars of most species of Pseudohemihyalea feed on broad-leaved trees, the P. ambigua group has larvae that feed on conifers. Their forewing coloration has accordingly evolved to light-and-dark lengthwise striping, giving better camouflage among the slim needles of the host plants. In this, they seem to be convergent to certain geometer moths, such as Caripeta piniata or Sabulodes niveostriata.