Forest entomology . ount of the first true conception of the family Eri-ophyidae, and the species under consideration is in consequence a mostimportant one. Eriophyes macrochelus (Nal.) To all lovers of natural history, no walk is more charming than aSouth Country lane, with its tall rough hedges and rich flora. Thehedges are generally well stocked with the field maple (Acer cara- pestre). The upper surface of theleaves of the field maple are oftencovered with small galls, and acareful examination will show thatthere are two sorts,—a larger anda smaller variety. The larger —which are, as a rul
Forest entomology . ount of the first true conception of the family Eri-ophyidae, and the species under consideration is in consequence a mostimportant one. Eriophyes macrochelus (Nal.) To all lovers of natural history, no walk is more charming than aSouth Country lane, with its tall rough hedges and rich flora. Thehedges are generally well stocked with the field maple (Acer cara- pestre). The upper surface of theleaves of the field maple are oftencovered with small galls, and acareful examination will show thatthere are two sorts,—a larger anda smaller variety. The larger —which are, as a rule, rathersparsely distributed on the leaves,and generally on the midrib andveins—are the galls of E. macro-chelus. These galls are very vari-able in many ways, both as regardscolour and structure. They maybe solitary or gregarious, single orcoalesced, glabrous or pubescent,and either on the veins or spread over the leaf. They appearquite early in summer, but may be considered fully developed inAugust. Fig. Fig. 27. — Galls on leaves of field maple(Acer campestre) caused by Eriophyesmacrochelus. Eriophyes macrorhynchus (Nal.)Phi/tojrtus myriadeum (Murray). This is the other species of gall on the field maple, and may easilybe recognised from the former species by being smaller in size, andmuch more crowded on the leaves. It is very abundant in southernEngland, but not at all common in the north or in Scotland. Fig. 28. 1 Economic Entomology—Aptera: South Kensington Museum Science Hand-books. ERIOPHYID^ OR GALL-MITES. 29 Eriophyes ltevis (Nal.) This species is found on the leaves of the common alder (Alnusglutinosa). The galls are found on the upper surface of the leaves, andare gregarious, often so abundant as to cover almost the entire surface of the -\^i^ fn^ leaf, generally glabrous, and very variable ^M I \Jp S -», in colour. Fkr. 29. — ?*-.*. Fig. 58. — Galls on leaf of fieldmaple (Acer campestre) caused byEriophyes maerorhynchus.
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