Amsinckia

fam. Boraginaceae

1a large brown blotch: cf. Agromyza
abiens

1b galls, etc => 100

100a Nematoda => 101

100b Acari => 102

100c Coleoptera => 103

100e Diptera => 104

100f Hemiptera => 105

100d Hymenoptera => 106

100g rust fungi => 107

100h smut fungi => 108

100i powdery and downy mildews => 109

100j other causers => 110

109 – smut fungi

109a Entylomataceae: Entyloma serotinum

109 – powdery and downy mildews

109a Erysiphaceae: Golovinomyces cynoglossi

Steven IJland sent me dried material that he had collected near the Hague in mid May. The mine was a brown blotch of ca. 4 cm without a visible trace of an initial corridor. This suggests A. abiens or
A.
ferruginosa
, but the relatively small size agrees most with abiens. However, Boraginaceaemharbour a rich agromyzid fauna, and without larvae a definite identification is not possible.

The obervation nevertheless is interesting because in the literature Amsinckia is not mentioned as a host to miners, let alone to Agromyzidae. The genus originally occurs in North America, but even the manual of US Agromyzidae by Spencer & Steyskal (1986a) does not mention the genus.

20/09/2016