![]() ![]() Too, the walnut husk contains a dye that stains almost anything it comes into contact with – like cement sidewalks and asphalt. For this reason, they are probably not the best choice around parking areas as a vehicle could sustain a substantial dent should the nuts hit with sufficient force. However, walnut tree placement takes a bit of planning in the landscape as the nuts with their husks can reach 4” in diameter. Walnut trees could be planted in a highly visible area solely for the opportunity to spot these delightfully peculiar grubs. ![]() They have outbreak years when more defoliation occurs but they do not tend to pose a significant health risk to their host species. Sawflies are related to bees and wasps but don’t sting. This little oddity feeds on walnut, hickory and butternut leaves and is the larvae of a sawfly (Eriocampa juglandis). A more applicable name would be the coconut flake worm as it looks like a strange type of sugary confection with delicate, snow-white tendrils that move in the lightest breeze. ![]() Ranking near the top of the naturalist’s what-the-heck-is- that list is a very strange creature called a butternut wooly worm. Have a question about an insect you’ve found? Visit the Home & Garden Information Center’s resources on insects, or submit your question to Ask an Expert.These butternut wooly worm larvae were seen along the Town of Washington, VA nature path in July 2015 If you see chewing damage on black walnut trees, turn the leaves over to look for the woollyworms. Underneath the wax is a green body with a white head. They feed on the leaves of black walnut, butternut, and hickory. One of the coolest looking sawflies is the butternut woollyworm (Eriocampa juglandis). The bodies of the larvae are covered with fluffy white wax. Sawflies feed together and often curl up when disturbed. A key difference is that sawflies have more than five pairs of prolegs. ![]() Sawflies are the larvae of young of wasps (Hymenoptera), whereas caterpillars become moths or butterflies (Lepidoptera). The larvae of sawflies are often confused with caterpillars. Sawflies seem to be in abundance this summer on a lot of plants including hibiscus, roses, and jewelweed, among others. ![]()
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