. Bulletin. Agriculture. LIFE HISTORIES OF FROGHOPPERS OF MAINE. 275 During June only young are to be found and during this period they pass through three or four moults. Three instars at least are represented in material collected June 19th, 26th and 27th. In rearings from nymphs collected on grass the latter part of June adults were secured during the first week in July. In one case a nymph enclosed June 29th moulted July ist and emerged as adult on July 5th and in another case a nymph probably recently moulted caged July 9th, developed to matu- rity and adult emerged July nth. These all ind
. Bulletin. Agriculture. LIFE HISTORIES OF FROGHOPPERS OF MAINE. 275 During June only young are to be found and during this period they pass through three or four moults. Three instars at least are represented in material collected June 19th, 26th and 27th. In rearings from nymphs collected on grass the latter part of June adults were secured during the first week in July. In one case a nymph enclosed June 29th moulted July ist and emerged as adult on July 5th and in another case a nymph probably recently moulted caged July 9th, developed to matu- rity and adult emerged July nth. These all indicate a short nymphal period and rapid growth. The adults continue to feed and up to July 29th no signs of egg maturity or egg deposition had been noted. Egg develop- ment is evidently slow and mating and tgg deposition must occur irregularly, probably extended over a period of some weeks in autumn. Ovaries from females, collected in the field, were dissected and four well developed eggs were found with definite shell, but no evidence of segmentation. A number of apparently undeveloped eggs were in the -? V.^.^tus ?.^V Fig. 39. Relative form of head in Ph. lineatus and spumarhis nymphs of final instar. Comparing the final instar especialy with spumarhis the head is longer and the front more distinctly produced. In spumarhis the part in front of the suture is in the ratio of 10 to 24 while in lineatus it is as 11 to 20 and the head entire in spumarius is in ratio of 44 wide to 31 long in lineatus as 40 wide to 34 long as taken in average for several specimens. Lineatus is further distinguished by the dusky coloration especially toward the posterior end of the body as the nymph approaches maturity. Some very small specimens of this species were taken at Saddleback Lake in the summer of 1916, the smaller ones only. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of th
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