Damage based identification key for endophagous herbivores on Common Reed (Phragmites australis)

Author: Patrick Häfliger ©
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CABI Europe - Switzerland, Rue des Grillons 1, CH-2800 Delémont

Species description

			"The Corkscrew Gall Mite" Steneotarsonemus phragmitidis (Schlechtendal) (Acari: Tarsonemidae)
									Archanara dissoluta Archanara geminipuncta Archanara neurica Arenostola phragmitidis Chilo phragmitellus Giraudiella inclusa Lasioptera arundinis Lasioptera hungarica Lipara lucens Lipara pullitarsis Lipara rufitarsis Lipara similis Microlasioptera flexuosa Phragmataecia castaneae Platycephala planifrons Rhizedra lutosa Schoenobius gigantellus Steneotarsonemus phragmitis Tetramesa phragmitis Thrypticus smaragdinus
	Biology: Mites leave old galls in May to colonize young shoots of common reed. Later on, eggs, larvae, and adults can be found together within the new galls. Description: Only visible under microscope (max 0.1 mm), transparent to orange (picture 12), adults four pairs of legs, larvae three pairs. Feeding pattern/damage: The reed mite mainly infests folded leaves at the shoot tips causing leaves to adhere to each other, inhibiting further growth and forming twisted corkscrew shaped galls (picture 20). Distribution: Europe, North America (introduced) References: Skuhravy, 1981				Pic. 12: Shoot tip infested by Steneotarsonemus phragmitis Pic. 20: Gall of Steneo- tarsonemus phragmitidis

2/04/07

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