Journal of entomology and zoology . Fig. 4—Photograph of manzanita branch showing the galls on the leaves made by themanzanita leaf-gall aphis, Phyllapliis coiveni (Cockerell). Natural size.(Original.) Because of its abundance throughout the state anci the many in-quiries received regarding it a description in a local publication willundoubtedly be welcomed. Stem Mother(Fig. 5)During the late summer and fall of the year the young leaf gallsappear in great numbers upon the manzanita bushes as a result JOURNAL OF ENTOMOLOGY AND ZOOLOGY 189 of the attacks of the stem mothers which are numerous at
Journal of entomology and zoology . Fig. 4—Photograph of manzanita branch showing the galls on the leaves made by themanzanita leaf-gall aphis, Phyllapliis coiveni (Cockerell). Natural size.(Original.) Because of its abundance throughout the state anci the many in-quiries received regarding it a description in a local publication willundoubtedly be welcomed. Stem Mother(Fig. 5)During the late summer and fall of the year the young leaf gallsappear in great numbers upon the manzanita bushes as a result JOURNAL OF ENTOMOLOGY AND ZOOLOGY 189 of the attacks of the stem mothers which are numerous at that seasonand which are busily engaged in giving birth to the succeeding gen-erations. These indi\iduals are easily recognized by their broadlypyriform or robust bodies which are sometimes partially coveredwith much or little white cottony secretion. The color of the bodyvaries from amber-brown to dark olive-green with dark broken. Fig. 5—Phyllaphis cmveni (Cockerell). Stem mother with enlarged drawing of anantenna at the top and a compound eye at the bottom. (Original.) transverse bands on the dorsum as shown in Fig. 5. The entirebody is covered with many very short hairs. The usual lengthvaries from mm. to 2 mm. and the greatest width from 1 mm. The head is small and narrower than the compound eyes are small and consist of three fecets each which 190 JOURNAL, OF ENTOMOLOGY AND ZOOLOGY resemble groups of ocelli. They are dark red. True ocelli arenot visible in the writers specimens. The antennas are short,scarcely reaching to the base of the prothorax; dusky; the entiresurface covered with very short spine-like hairs arranged in con-centric rings, and a few longer hairs; 4-articled (in some speci-mens there is an indication of a division in article III, making 5articles). The lengths of the articles are approximately as follows:I, mm.; II, mm.; Ill, mm.; IV, mm.
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectentomology, bookyear1
