Thrypticus bellus Loew, 1969

Diptera, Dolichopodidae

mine

Pale coloured corridor (here and there with even paler segments). Pupation within the mine.

hostplants

Juncaceae, monophagous

Juncus.

But see the note below.

phenology

Larvae in September-October (Hering, 1957a).

BENELUX

BE recorded (Meuffels, Pollet & Grootaert, 1991a).

NE recorded (de Meijere, 1939a).

LUX not recorded (Fauna Europaea, 2008).

distribution within Europe

Entire Europe (Fauna Europaea, 2008).

larva

Body segments with thick transverse ridges, that bear small teeth, enabling the larva to brace itself in the mine. Not only the anterior and posterior pairs of spiracula, known in the Acalyptrate Diptera are present, but also six pairs inbetween.

notes

Waitzbauer ao give a very different picture of the biology. According to them the larvae make a long vertical gallery at the inside of them culm of Phragmites australis, often running from internode to the other. The larvae are full-grown in August, then enter diapause; pupation after the hibernation.

references

Bellstedt, Stark & Meyer (1999a), Hering (1957a), de Meijere (1939a), Meuffels (2002a), Meuffels, Pollet & Grootaert (1991a), Nartshuk (2011a), Robbins (1991a), Waitzbauer, Pruscha & Picher (1972a).

30/03/2015