Silken-web

Guides

• Acantholyda circumcincta

  Acantholyda circumcincta is a species of sawfly in the family Pamphiliidae, a group commonly known as web-spinning sawflies. The genus Acantholyda contains species whose larvae construct silken webs on host plants. Adults are generally small to medium-sized sawflies with distinctive morphological features. Larval stages are associated with coniferous trees, where they feed gregariously within protective webs.

  Pamphiliidaesawflyweb-spinning-sawflyconifer-pestgregarious-larvaesilken-webPinus-feeder

• Cerastipsocus

  common barklice

  Cerastipsocus is a genus of barklice in the family Psocidae, containing at least 20 described species. These insects are commonly found on tree bark and foliage where they feed on lichens, algae, and other organic detritus. They are notable for producing silk from specialized mouth glands, which they use to create protective webs over eggs and dense aggregations. Unlike some related psocids that infest stored products, Cerastipsocus species are harmless decomposers in natural ecosystems.

  barklicePsocidaedecomposersilken-webarboreallichen-feeder

• Cerastipsocus venosus

  Tree Cattle, Common Barklouse

  Cerastipsocus venosus is a widespread barklouse species in the family Psocidae, commonly known as "Tree Cattle" due to the herding behavior of its nymphs. It occurs across North America, Central America, and the Caribbean. Both nymphs and adults aggregate on tree bark and foliage, where they feed on lichens and other organic matter. The species is harmless to plants and plays a role in nutrient cycling.

  barklousepsocidlichen-feedergregarioussilken-webharmless

• Hyphantria cunea

  Fall Webworm, Fall Webworm Moth, American White Moth

  The fall webworm (Hyphantria cunea) is a moth native to North America, ranging from southern Canada through the United States to northern Mexico. It is best known for its larval stage, in which caterpillars construct large silken webs on the terminal branches of host trees during late summer and fall. The species exhibits two color races that vary geographically: white moths with black-headed caterpillars predominate in northern populations, while spotted moths with red-headed caterpillars are more common in the south. Accidentally introduced to Hungary in the 1940s, it has become a destructive invasive pest across Europe and Asia, particularly in China where it is known as the 'North American White Moth.'

  defoliatorweb-forming-caterpillarinvasive-speciesnative-pestpolyphagousfreeze-avoiderthermoregulationbiological-control-targethazelnut-pestmulberry-pesturban-pestornamental-pestforest-pestagricultural-pestgregarious-larvaesilken-webNorth-American-nativeEuropean-invasiveAsian-invasiveviral-biocontrolparasitoid-hosthyperparasitism