Spiraea, bridewort

fam. Rosaceae

1a blotch, from which an excision is made in which the larva drops to the ground: Incurvaria praelatella

1b mine without an excision => 2

1c galls, etc. => 100

2a fleck mine: Coleophora potentillae

2b corridor, blotch, or tentiform mine => 3

3a mine < 1 cm, full depth: : Incurvaria praelatella (young mine)

3b mine larger, upper-surface => 4

4a silvery blotch, eventually a contracted tentifom mine; larva with chitinised head: Phyllonorycter corylifoliella

4b mine greenish, flat; larva a maggot: Agromyza spiraeoidearum

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

104 – Diptera

104a Cecidomyiidae: Tavolgomyia karelini

105 – Hemiptera

105a Aphididae: Aphis pomi; Brachycaudus spiraeae

109 – powdery and downy mildews

109a Erysiphaceae: >Podosphaera clandestina, leucotricha, spiraeae

Not included in the key: Coleophora hemerobiella, serratella, spiraeella; Ectoedemia spiraeae; Fenella nigrita; Parornix mixta; Stigmella inopinata.

02/02/2017