Tychius crassirostris Kirsch, 1871

on Melilotus

Tychius crassirostris: galls on Melilotus albus

Melilotus albus (from Mik, 1885b); the gall to the left is already vacated.

gall

The leaflets are folded over de midrib and contain one or more pea-sized, closed, unilocular galls. Initially the galls are almost massive and juicy, but when the contents have been eaten away they are hollow and leathery. The mature larva leaves the gall by making an opening in the wall. Pupation in the soil in a cocoon.

host plants

Fabaceae, monophagous

Melilotus albus, altissimus, dentatus, officinalis.

References to Medicago (Buhr, Dauphin & Aniotsbehere, Houard, Redfern & Shirley) need confirmation.

larva

Tychius crassirostris: larva

Melilotus albus, larva (from Mik, 1885b)

synonyms

Sibinia crassirostris.

references

B├ęguinot (2003a), Buhr (1964b), Dieckmann (1988a), Houard (1909a), Mik (1885b), Morris (1982a), Redfern &a Shirley (2011a), Rheinheimer & Hassler (2010a), Tomasi (2012a, 2014a).

mod 21.v.2019