Ericydnus

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1 Scutellum not laminate apically; most specimens with dark area anterior-apically on forewing …………..…….… lamasi
1’ Scutellum laminate apically; wings completely hyaline ……………………….……………………………………………………….…. 2

2(1) Orbital piliferous punctures minute, mostly separated by distinctly more than their own diameters..…..……… sipylus
2’ Orbital piliferous punctures larger, separated by about their own diameters …..……………………………………..….…… sp. 1

 

Sp. 1: Alameda, Contra Costa, Lassen, Los Angeles, Modoc, Napa, Riverside, San Bernardino, Shasta, Sierra, Solano, Stanislaus, Tuolumne (RLZC, UCF, UCR). Most specimens have the body all dark (except the metasoma yellow basally). A few specimens have the mesosoma partially yellow, and previously I considered these as a separate species, but I can find no reliable morphological differences and now treat them as different color forms of the same species.

 

Described Nearctic species and distribution

lamasi (Domenichini, 1951): MEX (Morelos), USA (CA)
sipylus (Walker, 1837): Presumed accidentally introduced into USA (CA)

 

Remarks

Kerrich (1967) provides good descriptions of the two described species.

 

References

Domenichini, G. 1951. Parassiti e iperparassiti di Pseudococcus citro Risso in Italia e nel Peru.  Bollettino di Zoologia Agraria e Bachicoltura, Milano 17: 157-180.
Kerrich, G.J. 1967. On the classification of the anagyrine Encyrtidae, with a revision of some of the genera (Hymenoptera: Chalcidoidea). Bulletin of the British Museum (Natural History) 20: 143-250.
Walker, F. 1837. Monographia Chalciditum. Entomological Magazine 4: 439-461.