50 NORTH AMERICAN THYSANOPTERA. 



Page. 

 Dogwood. (See Cornits stoloni/era.) 



Dracaena sp., food plant of Heliothrips femoralis 23 



Parthenothrips dracaense 22 



Echinothrips 11, 24, 37 



mexicanus 24, 37-38 



Elderberry. (See Samhucus glauca.) 



Elm, food plant of Scolothrips sexmaculatus 26 



Erigonumfasciculatum, food plant of Liothrips fasciculatus 33 



Erythrothrips 11, 21, 34-35 



arizonse 21, 35-36 



Eucharis grandiflora, food plant of Heliothrips femoralis 23 



Eurythrips 12, 17, 29 



ampliventralis 17, 29 



osborni 17, 29 



Euthrips 12, 15-16, 26-28 



albus 15,26,39-40 



cephalicus 16,27 



reticulatus 16,27 



citri 9, 15, 26 



ehrhorni 15, 26 



fuscus 9, 16, 27 



helianthi 16, 27, 40-41 



insularis 16, 27 



reticulatus= Euthrips insularis 27 



minutus 16, 27 



setosus= Euthrips minutus 27 



nervosum 16, 27 



nicotianse= Euthrips fuscus 27 



occidentalis 16, 27 



orchidii 15, 26 



parvus 15, 26, 38-39 



pyri 9, 15, 26 



tritici 9, 16, 28 



californicus 16, 28 



taken with Euthrips tritici on flowers 28 



ulicis californicus 16, 27 



Ferns, food plants of Heliothrips hsemorrhoidalis 23 



Festuca ovina, food plant of Chirothrips obesus 25 



pratensis, food plant of Limothrips cerealium 25 



Ficaria sp., food plant of Euthrips orchidii 26 



Ficus elastica, food plant of Heliothrips femoralis 23 



Parthenothrips dracxnse 22 



grandiflora, food plant of Heliothrips femoralis 23 



nitida, Liothrips balceri taken in galls on leaves 33 



religiosa, Liothrips bakeri taken in galls on flowers 33 



Fig, food plant of Euthrips pyri 26 



Thrips bremnerii 23 



Flowers, food plants of Thrips tabaci 23 



— spring, food plants of Euthrips nervosus 27 



wild, food plants of Euthrips tritici 28 



Fruit blossoms, food of Thrips tabaci 23 



Galls, on Ficus nitida leaves, Liothrips bakeri taken thereon 33 



religiosa flowers, Liothrips bakeri taken therein 33 



oak, Liothrips umbripennis mexicanus taken thereon 33 



