1046 WALTER H. WELLHOUSE 
Lepidoptera (continued) : Lepidoptera (continued): 
SHEMADIR HEC EYE 5 Ge dunn a Wied wlely daw os oe 3 Yponomeutidaes). see a 
Arctiid aes os Gales cek: peut Wh eA 3 Gelechiidae:. ..c..-20 eae eee 6 
ING CUT ae es I eee alia lar Neath al 27 Hlachistidae 2). ssa ane 5 || 
INotodontidae wins ace eee 6 Gracilariidae=<.) eee eee 12a 
Ibymantriidaelnes waceie site. aoe 7 Glyphipterygidae................ Z| 
Masiocampidaence 42% one 10 Nepticulidaes 4) sence eee 11 
Geometridae icy Ge. meine, Sa 27 Cosmopterygidae................ 24 
Drepanidae...... Se ea hw ae iced 1 iyonetiidaei:) 3 oe eee 4 
‘Nolidae...... grea eee gS cae Hs ee 1 Diptera, 16 species: 
Psychid geyser wnMeye an en kuemnen ris 1 Cecidomyiidae (Itonididae)....... 15 | 
Limacodidae.......... Be AL Ne 1 Trypetidae:. 434.22 eee 1 | 
Cossidaeis ae eik ia aes Se uaa e 1 Hymenoptera, 8 species: 
Sesiidae (Aegeriidae)............. 3 Tenthredinidae......5- ese 7 
Py ralidaeeiy theta ti sheen Calla 3 Chalcididae.: 3S .aneee ene 1 
sROTtKICID Rey ces ee en eee 30 
The catalog includes insects that have been taken on the Crataegus trees 
in five continents. The number of species reported from each continent is 
as follows: North America, 213 species; Europe, 203; Asia, 88; Africa, 11; | 
Australia, 8. All but 45 of the North American species are believed 
to be distinct from those of the Old World. <A single Australian species | 
is distinct from those of other continents. The insects recorded from | 
Asia and Africa are found also in Europe. 
It will be noticed that the mites, which have similar habits, are included 
with the insects in this paper. | 
Some helpful references to entomological notes concerning each species | 
have been included in the catalog, which is intended as an aid to other 
workers who are investigating the insects of our deciduous fruit trees 
and related plants. 
Grateful acknowledgment is made to Professors Glenn W. Herrick and | 
James G. Needham, of the Department of Entomology at Cornell Uni- 
versity, under whose direction the work was done and whose kindly criti- | 
cisms and suggestions are appreciated; also to Dr. W. T. M. Forbes, 
Dr. Edith M. Patch, Chas. W. Leng, Dr. P. B. Lawson, Professor Z. P. 
Metcalf, Dr. H. H. Knight, Professor Carl J. Drake, Dr. E. P. Felt, | 
and Henry Dietrich, who have kindly aided in the determination of | 
species; to Dr. K. M. Wiegand, who has kindly aided in the determina- | 
tion of species of Crataegus; and to Miss Lela G. Gross for able editorial | 
assistance. | 
THE GENUS CRATAEGUS 
Crataegus is the name of a group of trees and shrubs commonly known | 
by their sharp thorns, white flowers (pink or red in a few cultivated 
varieties) in May, and red or yellowish fruit like minature apples in | 
autumn. It is an ancient Greek name derived from kratos (strength), 
and was applied to the plants of this genus because of the hardness and | 
durability of the wood. 
