Annotated Checklist of California Encyrtidae (Hymenoptera) Author Zuparko, Robert L. text Zootaxa 2015 4017 1 1 126 journal article 10.11646/zootaxa.4017.1.1 086efdb4-44cf-4c0b-a796-1eb81f2cdd24 1175-5326 245475 BBFC3D93-6A7E-4862-84EF-021ADE2F4B3A Trichomasthus Thomson 1876 Hosts. Hemiptera : Eriococcidae coeruleus Mercet 1923 : 49 Type . MNMS Distribution. E (Alameda, San Joaquin) Host/habitat. Eriococcus spurius Remarks. In 1939 and 1949–50 a species then identified as T . cyanifrons was imported from Europe and released in southern California in a biocontrol program against E . spurius , but failed to establish ( Flanders 1952 ; Bartlett 1978b , cited by Noyes 2010 ). However, subsequent importations of a species initially identified as T . cyanifrons in 1952–1954 in central and northern California did result in establishment—this imported agent was later determined to be T . coeruleus ( Dreistadt & Hagen 1994 ) . Noyes (2001) lists two hosts for this species—both of which are invalid names for E. spurius . spp. Remarks. Specimens representing four additional morphospecies were collected from Alameda, Contra Costa, Imperial, Lassen, Marin, Orange and Tuolumne counties (RLZC, UCDC, UCFC, UCRC).