328 JOURNAL OF ECONOMIC ENTOMOLOGY [Vol. 10 



flies from March to August: attacks and kills small and large trees; 

 very injurious to second growth in some localities; is the principal 

 enemy "of the sugar pine outside of Dendroctonus monticolce Hopk. 



Melanophila intrusa Horn — Colorado and California; mines inner 

 bark of injured, dying and dead trees; sugar pine {Pinus lamhertiana) , 

 yellow pine (P. ponderosa) and rock pine (P. scopulorum) ; flies in June 

 and July; usually lives in the suppressed limbs and tops but sometimes 

 infests saplings; the larva indicates that it is quite different from the 

 other Melanophila. 



Anthaxia cenogaster Lap. — Practically all of the Rocky Mountain 

 and Pacific states; mines bark and outer wood of normal, injured, 

 dying and dead trees and shrubs; sugar pine {Pinus lamhertiana), 

 pinon pine (P. edulis), yellow pine (P. ponder osa), Jeffrey pine (P. 

 jeffreyi), digger pine (P. sabiana), knobcone pine (P. attenuata), Mon- 

 terey pine (P. radiata), douglas spruce (Psendotsuga taxifolia) , weeping 

 willow (Salix bahylonica), garry oak {Quercus .garryana), mountain 

 mahogany {Cercocarpus parvif alius), service berry {Amelanchier 

 alnifolia) and redbud (Cercis occidentalis) ; flies from March to Septem- 

 ber; commonly lives in the branches but often attacks and kills saplings 

 and shrubs; very injurious to the redbud in some localities. It appears 

 to the writer that there must be several species mixed. 



Chrysohothris femorata Fab. — Montana, Colorado, Idaho, Arizona, 

 and California; mines inner bark and wood of normal, injured, dying 

 and dead trees; willow (Salix sp.), aspen (Populustremuloides), black 

 Cottonwood (P. trichocarpa) , lombardy poplar (P. nigra italica) , gambel 

 oak (Quercus gamheli), live oak (Q. chrysolepis) , black oak {Q. cali- 

 fornica), wild plum {Primus americana), prune (P. domestica) and 

 imported maple (Acer dasycarpum) ; flies from March to September; 

 sometimes causes severe injury to poplar and maple shade trees as well 

 as fruit trees. Many of the published records of this species in the 

 west refer to Chrysohothris mali. 



Chrysohothris mali Horn — Oregon and California; mines inner bark 

 and wood of normal, injured and dying trees and shrubs; arroyo willow 

 {Salix lasiolepis), mountain mahogany {Cercocarpus parvifolius) , apple 

 {Pyrus malus), Christmas berry {Heteromeles arhutifolia) , plum {Prunus 

 domestica), wild plum (P. suhcordata), peach (P. persica), Oregon 

 maple {Acer macrophyllum) and box elder {A. negundo); flies from May 

 to August; lays its eggs singly in crevices in the bark; causes severe 

 injury to shade and fruit trees; all of the Chrysohothris reared from 

 the apple in California by the writer are of this species. These rearings 

 were from Siskiyou, El Dorado and Los Angeles counties. 



Chrysohothris nixa Horn — California; mines inner bark and wood of 

 normal, injured, dying and dead trees; incense cedar {Lihocedrus decur- 



