1 Scape inflated ventrally, length about 3x width; F1 lighter than F2 ……….…….……. 2
1’ Scape linear, length about 4x width; F1 concolorous with F2 ……………………..…. 3
2(1) Club unsegmented, apically truncate, length greater than 0.5x funicle length ……………………………………………………………………………………………….…… bicoloripes
2’ Club three segmented, apically rounded or obliquely truncate, length less than 0.5x funicle length …………………………………………………….…..…………… sp. 1
3(1) F1 wider than long, F5 & F6 quadrate ……………………………………. fuscicollis
3’ F1 subquadrate, F5 & F6 longer than wide …………………..……………….………. 4
4(3) Funicle segments closely attached to each other, their setae recumbent ……….. sp. 2
4′ Funicle segments well separated, their setae erect …………….………….………. sp. 3
Sp. 1: Alameda, Contra Costa, Mendocino, Orange, Riverside, San Bernardino, San
Diego, San Mateo, Santa Cruz, Siskiyou, Solano, Tehama, Yolo (CAS, EMEC,
RLZC, UCD).
Sp. 2: Calaveras, San Francisco (CSCA, EMEC, USNM).
Sp. 3: Humboldt (CSCA).
Described Nearctic species and distribution
bicoloripes (Girault, 1915): USA (CA, MA. NY, TX); CAN (NS, ON)
citricola Logvinovskaya, 1983: Native to Vietnam, introduced. USA (FL, LA, TX)
fuscicollis (Dalman, 1820): Native to Palaearctic, introduced. USA (CA, WA); CAN (BC, ON)
scutellatus (Miller, 1961): CAN (NS)
testaceipes (Ratzeburg, 1848): USA (CT); CAN (ON)
Remarks
Ageniaspis bicoloripes was recorded from California by Gates et al. (2002), without detailed locality data. That paper included an illustration of the female antenna, showing the scape length about 2x the width. However, in a specimen in the USNM designated as the lectotype by Gordh, the scape length is about 3x the width (the OD by Girault simply states that the scape is “rather greatly dilated ventrad”). The taxon I treat as “sp. 1” is very close to A. bicoloripes, and I believe further study will be necessary to determine if A. bicoloripes is truly present in the state, and if my sp. 1 is conspecific. In an earlier version of this key, I separated out a sp. 4 from Sonoma County, but I now consider that conspecific with A. fuscicollis, which was introduced into the Pacific Northwest in the 1980’s-90’s (Unruh et al. 2003); the USNM has two more specimens of this species collected in San Francisco. None of the three unrecognized species match A. citricola or A. scutellatus I found in the USNM.
References
Dalman, J.W. 1820. Försök till Uppstallning af Insect-familjen Pteromalini, I synnerhet med afseen de på di I Sverige funne Arter. (Fortsattning) Kungliga Svenska Vetenskapsakademiens Handlingar 41: 359.
Gates, M.W., Heraty, J.M., Schauff,. M.E., Wagner, D.L., Whitfield, J.B. & Wahl, D.B. 2002. Survey of the parasitic Hymenoptera on leafminers in California. Journal of Hymenoptera Research 11: 213-270.
Girault, A.A.1915. New genera of chalcidoid Hymenoptera. Journal of the New York Entomological Society 23: 165-173.
Logvinovskaya, T.V. 1983. A new species of Ageniaspis Dahlbom, 1857 (Hymenoptera, Encyrtidae) from Vietnam. Entomologicheskoe Obozrenie 62: 610-611.
Miller, C.D.F. 1961. A new genus and species of chalcid (Hymenoptera: Encyrtidae). Canadian Entomologist 93: 494-496.
Ratzeberg, J.T.C. 1848. Die Ichneumonen der Forstinsekten in entomologischer und forstlicher Beziehung. 2: 146-147. Berlin.
Unruh, T., Short, R., Herard, F. & LaGasa, E. 2003. Introduction and establishment of parasitoids for the biological control of the apple ermine moth, Yponomeuta malinellus (Lepidoptera: Yponomeutidae), in the Pacific Northwest. Biological Control 28: 332-345.