54 NORTH AMERICAN THYSANOPTERA. 



Page. 



Plectothrips 12, 31 



antennatus 31 



Plum, food plant of Euthrips pyri 26 



wild, in England, food plant of Euthrips pyri 26 



Poa pratensis, food plant of Anaphothrips striatus 28 



Chirothrips obesus 25 



Poplar, Carolina, Acanthothrips albivittatus taken thereon 31 



Phlceothrips maculatus taken under rotting bark 33 



Potato, food plant of Euthrips insularis 27 



Prune, food plant of Cephalothrips errans 44 



Euthrips ehrhornii 26 



minutus 27 



pyri 26 



Liothrips mcconnelli 33 



French, food plant of Cryptothrips californicus 32 



Pseudothrips 12, 28 



inequalis 28 



Ptelea trifoUata, food plant of Sericothrips pulchellus 24 



Pyrol, woolly, food plant of Euthrips insularis 27 



Quercus {see also Oak) . 



alba, food plant of Trichothrips tridentatus 31 



densiflora, food plant of Cryptothrips californicus 32 



dumosa, food plant of Trichothrips ilex dumosa 31 



Quince, food plant of Trichothrips beachi 30 



Radish, food plant of Heliothrips fasciatus 24 



Raphidothrips 11, 25 



fuscipennis 25 



Rhamnus purshiana, food plant of Erythrothrips arizonse 21, 36 



sp., food plant of Euthrips insularis 27 



Rhaptothrips 12, 29 



peculiaris 29 



Rhododendron occidentale, food plant of Thrips madronii 22 



Richardia sethiopica, food plant of Heliothrips femoralis 23 



Rosaceae, food plants of Euthrips cephalicus reticulatus 27 



Rose, "La France, " food plant of Aleurodothrips fasciapennis .• 29 



Roses, food plants of Euthrips insularis 27 



Salix (see also Willow). 



fluviatilis, food plant of Heterothrips salicis 28 



Trichothrips brevicuralis 30 



Sambucu^ glauca, food plant of jEolothrips huwanaii 22 



Saissetia olese, Cryptothrips californicus taken from under old shells 32 



Scale, black. (See Saissetia olese.) 



brown apricot. (See Lecanium corni [armeniacum].) 



Scirtothrips 12, 26 



ruthveni 26 



Scolothrips 12, 26 



sexmaculatus 26 



Sericothrips 11, 14-15, 24-25 



apteris 15, 24 



cingulatus 14, 24 



pulchellus 14, 24 



reticulatus 11, 15, 25 



stanfordii 15, 25 



variabilis 14, 24 



