Bactericera trigonica Hodkinson, 1981

Duarte, Beatriz Zarcos, Burckhardt, Daniel, Ouvrard, David, Queiroz, Dalva L., Valkenburg, Thijs & Neto, Luís, 2025, The Psylloidea (Hemiptera) of Portugal (mainland, Azores and Madeira): checklist and new distributional and host records, Zootaxa 5642 (4), pp. 343-385 : 363

Bactericera trigonica Hodkinson, 1981

Distribution Portugal. Mainland: Faro, Setúbal ( Hodkinson 1981b).

Host plants Portugal. Apiaceae : Daucus carota L. ( Hodkinson 1981b).

⁂ Bactericera trisignata ( Löw, 1886) , comb. rev.

Trioza trisignata Löw, 1886: 163 .

Bactericera (Smirnovia) trisignata ; Klimaszewski 1973: 239.

Phylloplecta trisignata ; Conci & Tamanini 1984: 250.

Distribution Portugal. Mainland: Leiria, Porto (iNaturalist, Appendix 1, as Trioza trisignata ).

Host plants Portugal. No information.

Comments. New for Portugal.

Burckhardt & Lauterer (1997), following Conci & Tamanini (1984), used Phylloplecta to include Trioza trisignata and another six holarctic species, forming a putatively monophyletic group associated with Rubus spp. However, in the molecular phylogeny of Percy et al. (2018), Phylloplecta trisignata groups within Bactericera . To avoid rendering Bactericera paraphyletic by keeping Phylloplecta as a separate genus, we propose here the following synonymies: Bactericera Puton, 1876 , = Phylloplecta Riley, 1884 , syn. nov., = Sinitrioza Yang & Li , in Li & Yang, 1984, syn. nov. These synonymies require the following new or revived combinations: Bactericera chunghsingica Lauterer, Yang & Fang, 1988 , comb. rev. (from Phylloplecta ) (= replacement name for Bactericera nigra Yang, 1984 nec Bactericera nigra ( Crawford, 1910) ; secondary homonym); B. occidentalis ( Tuthill, 1939) comb. nov. (from Trioza ); B. rubicola ( Tuthill, 1943) comb. nov. (from Trioza ); B. rubisuga (Yang & Li, in Li & Yang, 1984) comb. nov. (from Sinitrioza ); B. stylifera ( Patch, 1912) comb. nov. (from Trioza ); B. tripunctata ( Fitch, 1851) comb. nov. (from Psylla ); and B. trisignata ( Löw, 1886) comb. rev. (from Trioza ). Klimaszewski (1973) included Trioza trisignata in Bactericera , though without providing any justification. Li’s (2011) concept of Phylloplecta contains, in addition to two species associated with Rubus , two additional species developing on Euphorbiaceae and one on Amaranthaceae . The last three species are not closely related to Bactericera and are not further discussed here. Incidentally, according to Bliven’s (1955, 1956) descriptions, the Californian Choricymoza sequoiae Bliven, 1955 , seems to be a synonym of P. rubicola from Washington ( Hodkinson 1988). However, Bliven (1955, 1956) published his papers privately and there remains some doubt as to whether the distribution of his papers was sufficiently wide to signify ‘publication’ in the sense of the International Code of Zoological Nomenclature ( Hodkinson 1988).