. Agriculture of Maine : ... annual report of the Commissioner of Agriculture of the State of Maine. Agriculture -- Maine. REPORT OF state; ENTOMOIvOGIST. 207. Fig. 15. Aspidiotus perniciosus; adult female San Jose scale, before development of eggs; a, ventral view, showing very long sucking sel*. (Howard and Marlatt. Bulletin 62, Uiv. of Entomology, U. S. Dept. of Agri. Four or five generations were recognized at Washington. In summing up the progeny of a single female from spring to fall the number of individuals amounts to from 1,500,000,000 to ovei 3,000,000,000. The females are continuous
. Agriculture of Maine : ... annual report of the Commissioner of Agriculture of the State of Maine. Agriculture -- Maine. REPORT OF state; ENTOMOIvOGIST. 207. Fig. 15. Aspidiotus perniciosus; adult female San Jose scale, before development of eggs; a, ventral view, showing very long sucking sel*. (Howard and Marlatt. Bulletin 62, Uiv. of Entomology, U. S. Dept. of Agri. Four or five generations were recognized at Washington. In summing up the progeny of a single female from spring to fall the number of individuals amounts to from 1,500,000,000 to ovei 3,000,000,000. The females are continuously producing young from the middle of ^lay to early frost so that the young may be found running over the trees at almost any time during the summer. For this reason it is very difficult to handle them, in fact almost an impossibility. The only sure way is to have all nursery stock subjected to the hydrocyanic acid gas treatment Tbefore being set. Apple-Tree Bark-Louse. (Lepidosaphes uliiii.) A brief description of this our most common scale may not "be out of place when we consider that hardly a farmer with a balf-dozen trees or an orchardist with his acres, with all that "has been written on the subject, takes the pains to try to g-et rid of this easily handled orchard pest. It is a well known fact that this insect destroys many thousands of trees in rthe state. Its life history is known to only a comparative few, for the simple reason that the majority do not take the pains to 'even read the Hterature on the subject. I have so many speci-. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Maine. Dept. of Agriculture. Augusta : [State of Maine, Dept. of Agriculture
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