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Henk Meuffels and Patrick Grootaert (1990)

The identity of Sciapus contristans (Wiedemann, 1817) (Diptera: Dolichopodidae), and a revision of the species group of its relatives.

Bulletin de l'Institut Royal des Sciences Naturelles de Belgique - Bulletin van het Koninklijk Belgisch Instituut voor Natuurwetenschappen, 60:161-178.