Robinia, acacia

fam. Fabaceae

1a corridor of 5 mm at most, followed by a circular excision of ca. 5 mm diameter: Incurvaria pectinea

1b blotch or tentiform mine => 2

1c galls, etc. => 100

2a snow-white, under-surface rounded tentifom mine, often containing several larvae or pupae: Macrosaccus robiniella

2b whitish upper-surface blotch, overlying the midrib, rather narrow with lobed extensions: Parectopa robiniella

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

102 – Acari

102a Eriophyidae: Aculops allotrichus

104 – Diptera

104a Cecidomyiidae: Obolodiplosis robiniae

105 – Hemiptera

105a Aphididae: Acyrthosiphon pisum

109 – powdery and downy mildews

109a Erysiphaceae: Erysiphe palczewskii, pseudoacaciae, robiniae; Leveillula papilionacearum

109b Peronosporaceae: Peronospora cytisi

110 – other causers

110a Bacteria, Rhizobiaceae: Rhizobium leguminosarum

110b Fungi, Capnodiales: Cladosporium robiniae

110c Plantae, Santalaceae: Viscum album

Acacia was introduced in the middle of the 17th centrury from eastern North America (Weeda ao, 1987a) and, like in most exotics, its mining fauna is extremely poor; as late as in 2008 the first native miner was observed on it (I. pectinea). In the mean time from the southeast one succesfull species has invaded the Netherlands and a second one is approaching the borders.

Not included in the key: Liriomyza congesta.

05/05/2017