304 Report or THE DEPARTMENT OF ENTOMOLOGY OF THE 
ErropHyes (Sieb.) Nal.— Dorsum and ventrum of abdomen with about the 
same number of strie. Ventrum always punctured. Dorsum usually 
punctured, seldom partly or entirely smooth. Abdomen cylindrical, 
vermiform or slightly fusiform, seldom conspicuously wide behind 
shield. 
Monocuetus Nal.— Similar to Eriophyes, with a longitudinal furrow on 
dorsum of abdomen. 
Puy tiocoptes Nal.— Strie numerous and narrow, seldom broad, gradually 
becoming narrower towards end of abdomen. Annulation of posterior 
portion of abdomen not distinct from remainder of abdomen. Dorsum 
smooth, not usually punctured. Ventrum with narrow strize, always 
punctured. 
Antuocortes Nal.— Anterior portion of dorsum of abdomen with few 
broad striz, not punctured; posterior part with narrow striz. Ventrum 
always punctured, with many narrow strize. 
Trconotus Nal.—Dorsum of abdomen ridged and highly arched; striz 
with toothlike projections on median. Ventrum flattened, punctured, 
with narrow striz. 
EpiItRIMERUS Nal. Abdomen behind shield broad with two longitudinal 
furrows on dorsum, highly arched. Strie on dorsum narrow, numer- 
ous, smooth or punctured. 
OxypLeuriTes Nal.— Few or all of striz on dorsum with tooth or spine 
like projections on side. Abdomen much ridged or arched at the 
middle, with flattened sides. Shield large with anterior margin much 
extended. 
CALLyNtTROoTUS Nal.— Dorsum of abdomen with longitudinal rows of short 
spine-like projections. Ventrum punctured, with narrow striz. 
ParApHytortus Nal.— Dorsal and ventral strie on anterior portion of 
abdomen similar. Posterior strie on dorsum much broader. Anterior 
part of abdomen similar to Eriophyes, and posterior part resembling 
Phyllocoptes. 
LIST OF AMERICAN SPECIES AND HOST PLANTS. 
(1) Eriophyes thujae Garman. 
Occurs on the leaves of the American arbor vitae, Thuja 
occidentalis L. 
(2) Eriophyes salicicola Garman. 
This mite thrives on the leaves of Salix longifolia Muhl., 
producing a narrow longitudinal upward fold, which extends down 
the entire length of the leaf. 
(3) Cectdobia (?) salicicola Banks. 
On willow from Colorado. The mite is responsible for galls 
which extend a little above both surfaces of the leaf. 
