Trechnites Thomson 1876
| Main Author: | Zuparko, Robert L. |
|---|---|
| Format: | info publication-taxonomictreatment Journal |
| Terbitan: |
, 2015
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| Subjects: | |
| Online Access: |
https://zenodo.org/record/6117041 |
Daftar Isi:
- Trechnites Thomson 1876 Hosts. Hemiptera: Psyllidae insidiosus (Crawford 1910: 89) (Psylledontus) Type. USNM Distribution. W (Alameda, Butte, Contra Costa, Inyo, Los Angeles, Marin, Mendocino, Mono, Napa, Orange, Placer, Riverside, San Bernardino, San Diego, Santa Barbara, Santa Clara, Santa Cruz, Shasta, Sonoma, Stanislaus, Tulare, Ventura) Host/habitat. Cacopsylla pyri, C. pyricola, C. vasiljevi, Psylla pyrisuga, P. sp. Remarks. Trechnites insidiosus was described in 1910 in New York, and at the time its only known host was Cacopsylla pyricola, an Old World species first found in the New World in 1832, and on the west coast in 1939 (Clausen 1978 b). The parasitoid was first recorded on the West Coast in 1962. During a biocontrol program against C. pyricola that ran from the 1960 s to the 1980 s, T. psyllae (Ruschka) was imported into California from Switzerland and southeastern Europe (Unruh et al. 1995). Recently Guerrieri & Noyes (2009) synonymized T. psyllae under T. insidiosus (thereby increasing the host records of the latter). However it is not clear if the presence of T. insidiosus in California reflects the natural endemic range of a Holarctic species, if it is a Palearctic species that was introduced accidentally when C. pyricola expanded its range (as suggested by Unruh et al. 1995), or if it became established in California during the biocontrol program starting in the 1960 s.
- Published as part of Zuparko, Robert L., 2015, Annotated Checklist of California Encyrtidae (Hymenoptera), pp. 1-126 in Zootaxa 4017 (1) on page 52, DOI: 10.11646/zootaxa.4017.1.1, http://zenodo.org/record/245475