INDEX. 51 



Page. 



Gall, on Solidago, Idolothrips armatus taken therein 34 



Zygothrips longiccps taken therein 32 



pine-cone, on willow, Tricholhrips brevicuralis therein 30 



Gardenia sp. , food plant of Heliothrips fcmoralis 23 



Gnorimoschema gallsesolidaginis, on Solidago canadensis, Idolothrips armatus 



taken in galls 34 



Goldenrod (see also Solidago). 



food plant of Anaphothrips tricolor 28 



Cephalothrips yuccx 31 



Gossypium sp., food plant of Heliothrips femoralis 23 



Grape (see also Vitis). 



food plant of Euthrips pyri 26 



Leptothrips asperus taken thereon 32 



wild, food plant of Liothrips citricornis 33 



Grass, millet. (See Milium effusum.) 



"old witch," food plant of Chirothrips crassus 25 



Groundnut, food plant of Euthrips insularis 27 



Heliothrips 11, 14, 23-24 



fasciapennis 14, 24 



fasciatus ■ 9, 14, 23 



femoralis 14, 23 



hxmorrhoidalis 9, 14, 23 



Heteromeles arbutifolia, food plant of Tricholhrips ilex 30 



Heterothrips 12, 17, 28-29 



arisxmse 17, 28 



decacornis 17, 29 



salicis 17, 28 



Hickory, food plant of Liothrips citricornis 33 



Hop, food plant of Scolothrips sexmaculatus 26 



Hop-tree. (See Ptelea trifoliata.) 



Hydrangea sp., food plant of Heliothrips femoralis 23 



Idolothrips 13, 20-21, 33-34 



angusticeps 20, 34 



armatus 21, 34 



coniferarum ; 20, 34 



flavipes 20, 33 



tuberculatum 21, 34 



Jack-in-the-pulpit. (See Arissema triphyllum.) 



Juniperus virginiana, Idolothrips coniferarum taken thereon 34 



Kentia bclmoreana, food plant of Parthcnothrips draciense 22 



Key to genera 11-13 



species 13-21 



suborders and families 10-11 



Ldbiatx, food plant of Euthrips cephalicus reticulatus 27 



Laurel, California. (See Umbellularia califomica.) 

 mountain. (See Umbellularia califomica.) 



Laurestinas, food plants of Heliothrips hxmorrhoidalis 23 



Lecanium comi (armeniacum), Cryptothrips calif ornicus taken from under old 



shells 32 



Legumes, food plants of Euthrips insularly 27 



Lemon, food plant of Thrips madronii 22 



Leptothrips 13, 32 



asperus 32 



Lettuce, food plant of E[eliothrips fasciatus 24 



