Crystalline tube gall Published June 7, 2015 at 1279 × 704 in The Insects Behind the Weird Growths on Plants Crystalline tube gall. Photo by Ron Russo. ‹ Return to post Leave a Reply Cancel reply This site uses Akismet to reduce spam. Learn how your comment data is processed. Subscribe to Entomology Today! Enter your email address to subscribe to Entomology Today. You'll receive notifications of new posts by email. Email Address Subscribe Search Search for... Search Get Certified!Find ESA on FacebookFollow ESA on Twitter