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For Insects, Spiders & Their Kin
For the United States & Canada
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Discussion of 2018 gathering

Photos of insects and people from the 2015 gathering in Wisconsin, July 10-12

Photos of insects and people from the 2014 gathering in Virginia, June 4-7.

Photos of insects and people from the 2013 gathering in Arizona, July 25-28

Photos of insects and people from the 2012 gathering in Alabama

Photos of insects and people from the 2011 gathering in Iowa

Photos from the 2010 Workshop in Grinnell, Iowa

Photos from the 2009 gathering in Washington


Species Coniatus splendidulus

Coniatus splendidulus Splendid Tamarisk Weevil - Coniatus splendidulus Splendid Tamarisk Weevil Larvae - Coniatus splendidulus Unknown green weevil - Coniatus splendidulus weevil - Coniatus splendidulus Splendid tamarisk weevil? - Coniatus splendidulus Mitostylus? - Coniatus splendidulus Mitostylus? - Coniatus splendidulus
Kingdom Animalia (Animals)
Phylum Arthropoda (Arthropods)
Subphylum Hexapoda (Hexapods)
Class Insecta (Insects)
Order Coleoptera (Beetles)
Suborder Polyphaga (Water, Rove, Scarab, Long-horned, Leaf and Snout Beetles)
No Taxon (Series Cucujiformia)
Superfamily Curculionoidea (Snout and Bark Beetles)
Family Curculionidae (Snout and Bark Beetles)
Subfamily Hyperinae (Clover and Alfalfa Weevils)
Genus Coniatus
Species splendidulus (Coniatus splendidulus)
Other Common Names
Splendid Tamarisk Weevil
Synonyms and other taxonomic changes
Coniatus (Bagoides) splendidulus (Fabricius 1781)
12 spp. In this genus, 2 adventitious to the US
~3 mm
sw US (CA-TX-CO-NV) (BG data), native to the Mediterranean, accidentally introduced into AZ in 2006 and apparently spread from that single introduction...
Riparian Saltceder groves
host: Tamarix (Tamaricaceae)
Life Cycle
"It is a very beautiful weevil with unusual biology, since all members of the subfamily have external larvae, which feed on the outside of the leaves. Most weevils have larvae inside the host plant or in the soil where they are protected from predators and parasites. These hyperine weevils pupate in an open silk cage on the outside of the leaf or stem of the host." Charlie O'Brien
"A hyperine weevil which was under consideration for release as a biocontrol agent against tamarisk. However the release was not authorized due to conflict of interest between ranchers who want the tree controlled and the conservationists (in this case birders) who want to protect the preferred nesting site of the yellow bellied flycatcher. The USDA claims not to have released it from strict quarantine so it must have come in some other way. The tamarisk suck up the water to a great depth and kill off the other riparian trees, willow and cottonwoods for example, which are essential to the birds as they seek food among the latter. The problem is that the bird is endangered and prefers to nest in tamarisk which is not a natural community and which provides little food for the birds. It is a "Catch 22", but chance may have solved the dilemma." --C.W. O'Brien, pers. comm. to BV
Internet References
YouTube Video (21 mins) - TamariskCoalition