Lamachus angularius ( Davis, 1897 )

Khalaim, A. I., Ruíz-Cancino, E., Coronado-Blanco, J. M. & Castañeda-Vildуzola, Á., 2019, First record of the genus Lamachus Förster, 1869 (Hymenoptera: Ctenopelmatinae) from Mexico, with description of two new species, Russian Entomological Journal 28 (2), pp. 169-179 : 172

1. Lamachus angularius ( Davis, 1897)

Adexioma angularia Davis, 1897: 284 [holotype female (ANSP), USA, Washington].

= Lamachus oregon Cushman, 1939: 401 [holotype female (USNM), USA, Oregon, Sweet Home , ex cocoon of Neodiprion tsugae , coll. R.L. Furniss; no. 53349, U.S. N.M.].

REFERENCES. Cresson, 1928: 12 (type in ANSP); Cushman, 1939: 402 ( L. oregon (description); host); Furniss and Dowden, 1941: 49 (host); Townes, 1945: 519 ( Lamachus (comb.); L. oregon (syn.); catalogue); Townes and Townes, 1951: 334 (catalogue); Carlson, 1979: 596 (catalogue; host).

REMARKS. According to its original description [ Davis, 1897], the species was described on the basis of a single female which is named in the text as “type”. But in the catalogue Taxapad [ Yu et al., 2016], authors list for this species a lectotype referring to the catalogue of types deposited in the ANSP by Cresson [1928]. Actually, Cresson [1928: 12] only listed the species “ Adexioma angularia ” in his catalogue, but neither designated nor mentioned lectotype for this species.

DISTRIBUTION.Northwest USA (Idaho, Oregon, Washington) .

BIOLOGY. Reared from cocoons of Neodiprion tsugae Middleton ( Diprionidae ) in Oregon, USA [ Cushman, 1939; Furniss & Dowden, 1941]. Reported as parasitoid of N. scutellatus Rohwer [ Carlson, 1979].