◆◆ TruGreen Perimeter Pest does not include removal of webs higher than 10 ft. For more details, go to TruGreen FAQs at /FAQTREE.
It does not include treatment of specialty trees such as fruit or certain ornamentals, or assessment and treatment of trees over 25 ft. ✢ TruGreen Tree & Shrub includes fertilization of common trees and shrubs, and controls common foliar insects and diseases. ✦ Purchase of annual lawn plan required for TruGreen Lawn Assessment, which is performed at the first visit. Guarantee applies to annual plan customers only. ◆ TruGreen will gladly visit your property as needed between scheduled visits to ensure your satisfaction. Not to be combined with or used in conjunction with any other offer or discount. Availability of services and/or products may vary by geography. Valid at participating TruGreen® locations. Male and female larvae in 75% male nests became active earlier than males and females in other sex ratio treatments.* Special price of 50% off is for first Lawn service★, Tree & Shrub service✢, Mosquito service★★ and/or Perimeter Pest service◆◆ only. Requires purchase of annual plan, for new residential EasyPay, MonthlyPay, or PrePay customers only. In the field, male-biased nests produced heavier male and female pupae than female-biased nests. Male-biased nests had a significantly greater amount of silk deposited on their surfaces than female-biased nests. Males were the first to emerge from the nest and the first to venture out along trails to feed. We found that male larvae spent more time spinning silk on the nest and less time feeding than female larvae. We report here the results of experiments on sex-specific larval behavior and physiology and the effect of colony sex ratio on individual behavior. Lepidoptera larvae are easily sexed using external morphology, allowing us to uniquely mark male and female larvae and to assemble larval groups of particular sex ratios. The primary sex ratio in these two populations for four generations has been exceedingly male biased (64–79% male). Two populations are known to harbor a sex ratio distorter.
Nests typically contain several hundred larvae. The caterpillars of Eucheira socialis westwoodi cooperatively spin and maintain a hollow silken nest and an elaborate network of silken foraging trails on their host plant, madrone ( Arbutus spp.: Ericaceae).
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