California Encyrtidae

Robert Zuparko

rz “at”


This site presents a series of keys to morphospecies from most of the genera of Encyrtidae found in California. This is a work in progress, and is presented here to help further the discourse of Encyrtidae taxonomy in an informal manner. Much of this work was done without accessing holotypes, and thus relies heavily upon written descriptions of the named species. For this reason alone, these keys should be considered provisional.

Unless otherwise noted, all keys are for females only. For each included genus, the key will include all described species recorded from California, as well as those taxa that I have been unable to identify (= uncertain). The latter likely represent a combination of undescribed species plus described species with which I am unfamiliar. For these unrecognized taxa, I include the California county they were collected in, and a codon representing the institution where the specimens are held:


CAS       California Academy of Sciences, San Francisco, CA
CSCA     California State Collection of Arthropods, Sacramento, CA
EMEC    Essig Museum of Entomology, University of California, Berkeley, CA
RLZC     Robert L. Zuparko personal collection (ultimately to be deposited in EMEC)
SBMN    Santa Barbara Museum of Natural History, Santa Barbara, CA
UCDC    Bohart Museum of Entomology, University of California, Davis, CA
UCFC    Stuart M. Fullerton Collection of Arthropods, University of Central Florida, Orlando, FL
UCRC    Entomology Research Museum, University of California, Riverside, CA
USNM    National Museum of Natural History, Washington, DC

For each genus, I also list all the described species reported from the Nearctic Region (both endemic and introduced species), and their recorded distributions in the region (by Country and State/Province if known – I did not include any records from other regions), as well as any miscellaneous remarks that may be of taxonomic assistance, followed by a list of references cited. The delineation of which Mexican states fall in the Nearctic region follows guidelines used by the Department of Entomology of the California Academy of Sciences.

The initial phase of this project treats only the smaller genera. To date these include (with the number of described/uncertain species):

Adelencyrtus (2/0)
Aenasius (4/1)
Ageniaspis (1/4)
Aphycaspis (0/2)
Blepyrus (1/2)
Bothriothorax (3/3)
Cerapterocerus (0/2)
Ceraptroceroideus (1/2)
Cerchysiella (2/1)
Cerchysius (1/1)
Charitopus (0/2)
Chrysoplatycerus (2/0)
Cirrhencyrtus (1/1)
Coccidencyrtus (1/1)
Coelopencyrtus (1/1)
Copidosomopsis (2/1)
Dicarnosis (1/1)
Discodes (1/6)
Echthroplexiella (0/2)
Ericydnus (2/1)
Formicencyrtus (2/0)
Ginsiana (1/3)
Gyranusoidea (3/5)
Habrolepis (1/1)
Holcencyrtus (1/2)
Isodromus (3/1)
Lamennaisia (1/1)
Mayridia (0/2)
Meromyzobia  (1/4)
Microterys (6/6)
Oobius (4/6)
Ooencyrtus (3/17)
Parablastothrix (1/1)
Prionomastix (1/2)
Prionomitus (2/0)
Prochiloneurus (2/3)
Pseudencyrtus (0/11)
Pseudleptomastix (1/6)
Rhopus (0/3)
Saera (1/2)
Syrphophagus (2/11)
Tetracnemoidea (3/3)
Tetracnemus (1/4)
Trichomasthus (1/4)
Tyndarichus (1/1)
Zaomma (1/1)

Eventually I hope to also include keys for Blastothrix, Encyrtus, Trjapitzinellus and the “major players” (Anagyrus, Cheiloneurus, Metaphycus and Psyllaephagus) although I have no current plans to treat Acerophagus, Copidosoma or Homalotylus. Genera represented in California by only a single species (whether described or not) will not be included.