Diastrophini

Nastasi, Louis F., Buffington, Matthew L., Davis, Charles K. & Deans, Andrew R., 2024, Key to the North American tribes and genera of herb, rose, bramble, and inquiline gall wasps (Hymenoptera, Cynipoidea, Cynipidae sensu lato), ZooKeys 1196, pp. 177-207 : 177

Diastrophini

Figs 73-75 , 92-94

Diagnosis.

Pronotum tall and broad dorsomedially. Pronotal submedial pits distinct and well-impressed. Pronotal plate present and complete, distinct both dorsally and ventrally. Mesopleuron sculpture striate or smooth and shining. Mesoscutellar foveae distinct. Fore wing with marginal cell entirely open or entirely closed, never partially open. Wings often with darkened areas, especially around the marginal cell. Metatarsal claws always with basal lobe. Metasomal tergites 2 and 3 either free and articulate, or fused into a syntergite in some females.

Note.

Diastrophini includes 25 described North American species in three genera: Diastrophus Hartig, 1840, Periclistus Förster, 1869, and Synophromorpha Ashmead, 1903 ( Nastasi and Deans 2021). The North American members of this tribe are gall inducers on various Rosaceae or inquilines in the galls of Diastrophus Hartig, 1840 or Diplolepis Geoffroy, 1762 ( Nastasi and Deans 2021).

Figures

Figures 73 - 75. 73 Diastrophus kincaidii, lateral view (PSUC _ FEM 000251280) 74 Periclistus sp., lateral view (PSUC _ FEM 000250920) 75 Synophromorpha sp., lateral view (PSUC _ FEM 000250918).

Figures 87 - 95. 87 galls of Antistrophus pisum on stem of Lygodesmia juncea (Asteraceae: Cichorieae), photographed by Chris Friesen (https: // www. inaturalist. org / observations / 95588437) 88 galls of Antistrophus rufus in dissected stem of Silphium laciniatum (Asteraceae: Heliantheae), photographed by Andy Deans (https: // www. inaturalist. org / observations / 64708490) 89 gall of Antistrophus silphii on apical stem of Silphium integrifolium (Asteraceae: Heliantheae), photographed by Andy Deans (https: // www. inaturalist. org / observations / 64708191) 90 galls of Diplolepis polita on leaves of Rosa sp. (Rosaceae: Roseae), photographed by Garth Harwood (https: // www. inaturalist. org / observations / 165442438) 91 gall of Diplolepis californica on Rosa sp. (Rosaceae: Roseae), photographed by Mary K. Hanson (https: // www. inaturalist. org / observations / 115655737) 92 gall of Diastrophus potentillae on Potentilla simplex (Rosaceae: Potentilleae), photographed by Tom Murray (https: // www. inaturalist. org / observations / 134669544) 93 gall of Diastrophus nebulosus on stem of Rubus sp. (Rosaceae: Rubeae), photographed by Pam Curtin (https: // www. inaturalist. org / observations / 174007397) 94 galls of Diastrophus kincaidii on stems of Rubus parviflorus (Rosaceae: Rubeae), photographed by Adam Heikkila (https: // www. inaturalist. org / observations / 173314109) 95 galls of Phanacis taraxaci on petiole of Taraxacum officinale (Asteraceae: Cichorieae), photographed by Nathan Earley (https: // www. inaturalist. org / observations / 174118397).