(Fig. 1)

Apion macilentum Blanchard, 1851: 309. Type locality: Valdivia, Chile.

Chilapion macilentum (Blanchard), Kissinger 1968: 19, fig. 4n, o, 7f, 8h, i, 10c, d; Wanat 2001: 366.

This species is endemic to Chile and Argentina. It is associated with Gevuina avellana Mol. and Lomatia hirsuta (Lam.) Diels ex JF Macbr. (Proteaceae) (G. Kuschel, in litt.).

Distinguishing features of the species are the open mesocoxal cavities; the black, subcylindrical prothorax; and the blue (or green) elytra with narrow, convex elytral intervals.

Distribution. The range is between latitude 34 8 58 9 S and 42 8 37 9 S in the Maule, Biobío, Araucanía, and Los Lagos Regions of Chile and Río Negro Province of Argentina.

Argentina. Río Negro: 1 ?, Lo. Moreno, 25.I.1949, W. Wittmer (NZAC); 1 ?, Lo. Mascardi, 31.I.1949, W. Wittmer (NZAC). Chile. Maule: 1 /, Curicó, El Coigo, Coll. Kuschel (NZAC); 1 /, Cord. Parral, Las Cruces, V.1958, G. Kuschel Coll. (NZAC); 1 /, Cord. Parral, Linares, 30.XI.1956, L. E. Peña (NZAC). Biobío: 1 /, Abanico, 25.I.1948, Coll. Kuschel (NZAC); 1 ?, Pemehue, 12.I.1946, G. Kuschel, on Lomatia hirsuta (NZAC). Araucanía: 1 /, Laguna Malleco, 1,150 m, 25.I.1946, G. Kuschel, on Lomatia hirsuta (NZAC). Los Lagos: 2 ?, Valdivia, Lago Calafquen, Casa de Piedras, 26.I.1995, T. Cekalovic (DGKC); 2 /, Llanquihue, Frutillar, 27.II.1950, G. Kuschel, on Gevuina avellana (NZAC); 2 /, Llanquihue, Tegualda, 28.I.1945, G. Kuschel, on Lomatia hirsuta (NZAC); 7 ? 1 /, Chiloe´, 5 km W Conchi, 21.I.1998, T. Cekalovic (DGKC); 1 /, Isla Chiloe´, Piruquina, 16.II.1995, T. Cekalovic (DGKC); 1 ?, Isla Chiloe´, San Juan de Chadmo, 20.II.1997, T. Cekalovic (DGKC); 3 /, Isla Lemuy, Aldachildo, 24.I.2000, T. Cekalovic (DGKC); 1 /, Isla Quinchao, Hullar Alto, 19.II.1989, T. Cekalovic (DGKC); 1 /, Isla Quinchao, Quetro, 7.II.2001, T. Cekalovic (DGKC).