Nature photographer Timothy Boomer specializes in capturing the often-overlooked world of insect galls, unusual growths induced on plants by insects. These structures, primarily formed by cynipid wasps (also known as gall wasps), serve as both protection and a food source for developing larvae.
Galls result from chemicals inserted by larvae into host plants, drawing on the plant’s resources. They vary significantly in size, can appear in clusters, and display a range of colors from ruddy brown to vibrant pinks and yellows. Boomer expressed his particular interest, stating to Colossal, “Galls can be brought about by many different organisms, but I tend to focus on the ones induced by cynipid wasps because they are the most visually stunning (at least in my opinion).”
The intricate relationship ensures the larva’s safety from predators, provides sufficient nourishment, and allows it to mature before emerging. Different wasp species induce distinct gall characteristics, often on specific parts of plants. Scientists estimate there are at least 1,300 cynipid species globally.
Environmental factors can sometimes alter a gall’s appearance. Boomer noted an atypical spined turban gall, whic...