Saltcedar
Guides
Cryptocheilus idoneum idoneum
Cryptocheilus idoneum idoneum is a subspecies of spider wasp in the family Pompilidae. It was described by Banks in 1910. Like other members of the genus Cryptocheilus, it is presumed to be a spider-hunting wasp that provisions nests with paralyzed spiders for its larvae. Observations of the species have been documented in Colorado, where individuals were recorded visiting flowering saltcedar trees for nectar.
Diorhabda
tamarisk beetle, saltcedar leaf beetle
Diorhabda is a genus of leaf beetles in the family Chrysomelidae, subfamily Galerucinae. Most species within the genus feed on Tamarix (tamarisk or saltcedar), though at least one species, D. tarsalis, is a pest of Chinese licorice (Glycyrrhiza uralensis). The genus is native to Europe and Asia, with several species introduced to North America as biological control agents for invasive Tamarix. The D. elongata species group comprises five sibling species specialized on Tamarix: D. elongata, D. carinata, D. sublineata, D. carinulata, and D. meridionalis.
Diorhabda carinulata
Northern Tamarisk Beetle, Saltcedar Beetle, Saltcedar Leaf Beetle, Tamarisk Leaf Beetle
Diorhabda carinulata is a leaf beetle native to Central Asia, introduced to North America as a classical biological control agent for invasive saltcedar (Tamarix spp.). Adults and larvae feed exclusively on Tamarix foliage, causing defoliation that can reduce tamarisk biomass by 75–85% over multiple years. The species has established successfully in the western United States, with populations evolving shorter critical day lengths for diapause induction that enable range expansion. Its introduction has generated conservation concerns due to impacts on nesting habitat for the federally endangered southwestern willow flycatcher.
Diorhabda sublineata
Subtropical Tamarisk Beetle, Saltcedar Beetle, Saltcedar Leaf Beetle, Tamarisk Leaf Beetle
Diorhabda sublineata is a leaf beetle in the family Chrysomelidae, commonly known as the subtropical tamarisk beetle. Originally described from Algeria in 1849, it was restored to full species status in 2009 after being treated as a subspecies or synonym of D. elongata for over a century. It is a specialist feeder on tamarisk (Tamarix spp.) and has been introduced to North America as a biological control agent against invasive saltcedar. The species is particularly adapted to subtropical and Mediterranean climates.
Eucerceris rubripes
Eucerceris rubripes is a species of weevil wasp in the family Crabronidae, tribe Cercerini. The genus Eucerceris was subject to extensive taxonomic revision by George R. Ferguson, who specialized in Cerceris and related genera. Like other cercerine wasps, females provision nests with weevils (Curculionidae) as food for their larvae. The species has been recorded visiting flowering saltcedar (Tamarix) for nectar in Colorado.