Zea, maize

fam. Poaceae

1a narrow corridor; larva solitary; larva and puparium set with transverse rows of long spinelike papillae; pupation outside the mine : Pseudonapomyza atra

1b mine broad; larvae usually communal; no long spines; puparia in the mine, anchored with strands of silk: Cerodontha incisa

1c 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

101 – Nematoda

101a Anguinidae: Ditylenchus dipsaci

101b Heteroderidae: Heterodera avenae

101c Meloidogynidae: Meloidogyne chitwoodi

104 – Diptera

104a Cecidomyiidae:

104b Chloropidae: Oscinella frit, pusilla, trochanterata

107 – rust fungi

107a Pucciniaceae: Puccinia purpurea, sorghi

108 – smut fungi

108a Microbotryaceae: Sphacelotheca reiliana

108b Ustilaginaceae: Mycosarcoma maydis

109 – powdery and downy mildews

109a Peronosporaceae: Peronosclerospora maydis; Sclerophthora macrospora

110 – other causers

110b Lepidoptera, Pyralidae: Ostrinia nubilalis

Not included in the key: Cerodontha superciliosa; Ephysteris promptella.

19/05/2017