Russelliana sp. 18

Material examined. Chile: 2 ♂, 3 ♀, V Region, Province San Felipe de Aconcagua, km 20 Resguardo de Los Patos to Paso del Rubio, 1800 m, 1.i.1999,? Senecio sp., semidesert and subalpine scrub (D. Burckhardt) #11(3) (NHMB, dry).

Comments. The specimens resemble R. adela, bicolorata, intermedia and xantha, in a paramere bearing a long hook-shaped apico-anterior process which is situated interiorly to an apico-posterior lobe. They differ from the four species in very long genal processes, and from R. bicolorata in an evenly yellow body colour.

Undetermined species. The following females and immatures could not be associated with males which are needed for species identification.