Venom-gland
Guides
Disholcaspis
Disholcaspis is a genus of gall wasps in the family Cynipidae containing more than 40 described species. Species in this genus induce characteristic galls on oak trees (Quercus spp.), with gall morphology varying by species and generation. Some species produce galls that secrete honeydew, establishing facultative mutualisms with ants that defend the galls from parasitoids. The genus exhibits heterogony, with alternating sexual and parthenogenetic asexual generations that typically produce different gall forms.
Disholcaspis cinerosa
Mealy oak gall wasp
Disholcaspis cinerosa, commonly known as the mealy oak gall wasp, is a species of gall wasp in the family Cynipidae. It induces distinctive galls on oak trees (Quercus spp.), specifically known as "mealy oak galls." The species has been documented to possess exceptionally large venom glands relative to its body size—when unfolded, the venom gland is approximately 10 times longer than the abdomen—making it a notable subject in studies of gall induction mechanisms. Like other cynipid wasps, it exhibits an alternation of generations life cycle with both sexual and asexual (parthenogenetic) generations.
Disholcaspis prehensa
clasping twig gall wasp
Disholcaspis prehensa is a gall-inducing cynipid wasp native to California that induces distinctive galls on scrub oak and leather oak. The species exhibits heterogony, alternating between sexual and asexual generations that produce two morphologically different gall types. The asexual generation forms conspicuous mushroom-shaped twig galls with clasping bases, while the sexual generation produces small, hidden bud galls.
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quercusmamma
oak rough bulletgall wasp
Disholcaspis quercusmamma, the oak rough bulletgall wasp, is a cynipid gall wasp that induces distinctive bullet-shaped galls on twigs of white oaks. The species exhibits an alternation of generations with sexual and asexual phases, each producing morphologically different galls. The fall bullet galls are large, conspicuous structures with a velvety surface and pointed apex, while spring galls are small and inconspicuous on leaf buds. This wasp possesses notably enlarged venom glands, with the venom reservoir occupying approximately one-third of abdominal volume, implicating venom compounds in gall induction.
Disholcaspis rubens
Disholcaspis rubens is a species of gall wasp in the family Cynipidae, first described by Gillette in 1893. Like other members of its genus, it induces distinctive galls on oak host plants. Species in Disholcaspis are known for producing twig galls rather than leaf galls, and many exhibit parthenogenetic reproduction with all-female generations. The genus is characterized by enlarged venom glands, which are implicated in the chemical induction of gall formation.
Neobisiidae
neobisiid pseudoscorpions
Neobisiidae is a family of pseudoscorpions comprising approximately 550-750 species across 32-34 genera, distributed across Africa, the Americas, and Eurasia. Members are small arachnids ranging from 1 to 5 mm in body length, with body colors varying from reddish or dark brown through olive green to yellow or creamy white. The family includes both surface-dwelling and cave-dwelling species, with troglobitic species often exhibiting eye reduction or loss. Several genera, notably Stenohya, exhibit pronounced sexual dimorphism in pedipalp morphology.