Literature
- Thomson, C.G. 1870b. Bidrag till Sveriges insect fauna 3: 339-340. Thomson's Opuscula Entomologica.
- Vinokurov, N.N. 1984. Pionosomus trichopterus Thoms. and its subspecies (Heteroptera, Lygaeidae) 9: 73-74. Nasekomye Mongolii.
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