Blepyrus

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1 Basal funicle segments quadrate and of about same width; postmarginal vein about 5x length marginal vein …………………………………………………………….………. tenuiscapus

1’ All funicle segments transverse and increasing in width distally; postmarginal vein about 4x marginal vein ………..…………………………………………………………………….… 2

 

2(1) Head width about 5x frontovertex width; inner margin of eyes with lower section forming widely obtuse angle from upper section; wings completely hyaline ………………….… sp. 1

2’ Head with about 6x frontovertex width; inner margin of eyes with lower section forming almost a right angle from upper section; wings slightly immaculated medially ………… sp. 2

 

Sp. 1: Contra Costa, Kern, Stanislaus (RLZC); Santa Barbara, Solano (UCDC); Orange, Riverside, San Bernardino (UCRC). The antenna closely resembles that of B. rhopoideus (Fig. 107 in Kerrich, 1967).

Sp. 2: Stanislaus (RLZC) (1 specimen)

 

Remarks

The type locality for B. tenuiscapus is given as “Fillmore”.  This is a city in Ventura County wherein an insectary facility was established, and it is not clear to me if specimens so labelled represent locally-collected taxa, or species brought in from other areas in biocontrol programs. Two Blepyrus species were imported into California for biocontrol programs, but both failed to establish: B. saccharicola imported from the southern USA in 1952 against Pseudococcus longispinus (Bartlett, 1978), and B. insularis imported from Mexico in 1966-67 against Ferrisia virgata (DeBach & Warner, 1969). Kerrich (1967) provided keys to species of this genus under both Blepyrus and Euryrhopalus.

 

Described Nearctic species and distribution

carolinensis (Kerrich, 1967): USA (NC)
decimus (Kerrich, 1982): MEX (MOR)
insularis (Cameron in Blackburn & Cameron, 1886): USA (MS, TX)
rhopoideus (Kerrich, 1967): USA (TX)
saccharicola Gahan, 1942: USA (FL, LA)
schwarzi (Howard, 1898): USA (FL, TX)
tenuiscapus (Kerrich, 1967): USA (CA)

 

References

Bartlett, B.R. 1978. Eriococcidae. Pp. 129-131 in Clausen, C.P. (ed.). Introduced parasites and predators of arthropod pests and weeds: a world review. United States Department of Agriculture, Agricultural Handbook 480: 545 pp.
Blackburn, T. & Cameron, P.  1886. On the Hymenoptera of the Hawaiian Islands. Memoirs of the Manchester Literary and Philosophical Society (3) 10: 194-245.
DeBach, P. & S. Warner. 1969. Importation and colonization of natural enemies of the striped mealybug, Ferrisia virgata, in California. Annals of the Entomological Society of America 62: 1117-1119.
Gahan, A.B. 1942. Descriptions of five new species of Chalcidoidea, with notes on a few described species (Hymenoptera). Proceedings of the United States National Museum 92: 41-51.
Howard, L.O. 1898. On some new parasitic insects of the subfamily Encyrtinae. Proceedings of the United States National Museum 21: 231-248.
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) Entomology) 20: 143-250.
Kerrich, G.J. 1982. Further systematic studies on Tetracnemine Encyrtidae (Hym., Chalcidoidea) including a revision of  the genus Apoanagyrus. Journal of Natural History 16: 399-430.