Plant Parasites of Europe

leafminers, galls and fungi

Haplodiplosis marginata

Haplodiplosis marginata (von Roser, 1840)

saddle gall midge, black cereal midge

on grasses


The culm, usually aboven the uppermost node, with one or more narrow saddle-shaped depressions. In each one blood red larva. Hibernation, and then pupation, in the ground.

host plants

Poaceae, oligophagous

Alopecurus myosuroides; Arrhenatherum elatius; Avena sativa; Dactylis glomerata; Elytrygia intermedia subsp. trichophora, repens; Holcus mollis; Hordeum vulgare; Lolium temulentum; Phleum pratense; Poa pratensis; Schedonorus pratensis; Secale cereale; Triticum aestivum.


Haplodiplosis marginata: spatula

spatula with papillae (from Möhn, 1955a)


Clinodiplosis, Diplosis, Haplodiplosis, equestris Wagner, 1871.

parasitoids, predators

Holarcticesa clinius.


A pest in cereal crops.

Generally, the larvae pupate in the soil unprotected. However, in some regions of western Europe the larvae do spin a cocoon, presumably as a protection against unfavourable weather conditions, especially drought (Censier ao, 2014a).


Buhr (1964b, 1965a), Censier, Chavalle, Knor, De Proft, Bodson & Skuhravá (2014a), Dauphin & Aniotsbehere (1997a), Gagné (2010a), Houard (1908a), Möhn (1955a), Redfern & Shirley (2011a), Roskam (2009a, 2019a), Roskam & Carbonnelle (2015a), Rübsaamen (1895a), Simova-Tošić, Skuhravá & Skuhravý (2000a, 2004a), Skuhravá & Skuhravý (1994a, 1999a, 2021a: 28. 133), Skuhravá, Skuhravý, Dauphin & Coutin (2005a), Skuhravá, Skuhravý, Dončev & Dimitrova (1991a, 1992a), Skuhravá, Skuhravý & Jørgensen (2006a), Skuhravá, Skuhravý & Meyer (2014a), Skuhravá, Skuhravý, Skrzypczyńska & Szadziewski (2008a).

Last modified