210 JOURNAL OF ECONOMIC ENTOMOLOGY [Vol. 11 
Fisher of the Branch of Forest Insect Investigations for practically 
all of the adults. 
Several of the species are of considerable economic importance be¬ 
cause their winding larval mines riddle the wood of the mesquite and 
other southwestern shrubs and trees. Posts and piles of mesquite fire¬ 
wood are sometimes severely damaged by the work of Chrysobothris 
octocola and closely related species. 
A few of the species such as Melanophila pini-edulis will kill trees or 
parts of trees but the majority of them are secondary and attack the 
tree only after it starts to die or is already dead. 
Psiloptera sp. possibly ivebbi Lee.—Specimens from Arizona; mines 
wood of old dead trees; palo verde ( Cercidium torreyanum) ; one larva 
found in the heartwood of an old dead tree in Sabino Canyon. 
Melanophila pini-edulis Burke.—Colorado, Utah, Arizona; mines 
bark and outer wood of the limbs and trunk of dying, dead and living 
trees of the pinion (. Pinus edulis) ; in the laboratory emerges during 
June, July and August; assists Scolytids and Cerambycids to kill trees. 
Chrysobothris octocola Lee.—Arizona, Texas; mines bark and wood 
of injured, dying and dead shrubs and trees; mesquite ( Prosopis 
juliflora ) and palo verde ( Cercidium torreyanum ); in the laboratory 
emerges from the wood in August and September; the larval mines 
riddle the wood and often cause severe injury to mesquite posts and 
firewood. 
Chrysobothris edwardsii Horn.—Arizona; mines bark and wood of 
dying and dead stems; ocotillo ( F.ouquieria splendens) ; in the labora¬ 
tory emerges in August and September. 
Chrysobothris debilis Lee.—Arizona; mines bark and wood of dying 
and dead limbs and trunks of shrubs and trees; live black oak ( Quercus 
emoryi), palo bianco hackberry ( Celtis reticulata), cats claw ( Acacia 
greggii), mesquite (Prosopis juliflora) and palo verde ( Cercidium torrey¬ 
anum) ; in the laboratory emerges from May to October. 
Chrysobothris axillaris Horn.—Arizona; mines bark and sap wood of 
dying and dead limbs of live black oak ( Quercus emoryi) ; in the labora¬ 
tory emerges in July. 
Chrysobothris ignicollis Horn.—Colorado, Arizona; mines bark and 
sapwood of dying and dead limbs of living trees and also dying and 
dead trees; Rocky Mountain juniper (Juniperus scopulorum) and 
probably alligator juniper (Juniperus pachyphlcea) ; flies in July. 
Chrysobothris ludificata Horn.—Arizona; mines bark and sapwood 
of dying and dead limbs, logs and stumps; western yellow pine (Pinus 
ponderosa) ; according to Mr. A. J. Jaenicke of the Forest Service this 
is the common species on yellow pine slash in northern Arizona; flies 
in June. 
