Malvinometopa, Krapp-Schickel, Traudl, 2011

Krapp-Schickel, Traudl, 2011, On the Austral-Antarctic stenothoids Proboloides, Metopoides, Torometopa and Scaphodactylus (Crustacea Amphipoda) Part 2: the genus Proboloides, with description of two new genera and the transfer of two nominal species to Metopoides, ZooKeys 86, pp. 11-45 : 16

Malvinometopa gen. n.

Type species.

Proboloides porcellanus KH Barnard, 1932

Diagnostic characters.

Md palp with 3 arts, Mxp IP separated; Mx1, 2 unknown; A1, 2 peduncle strong, flagellum reduced to 4-6 arts. Cx4 not much wider than Cx2+3. P5 basis rectolinear, with small posterodistal lobe. P6, 7 basis narrowing distad, both with posterodistal small lobe reaching along half of ischium.

Etymology.

The type species was collected from the pharynx of a large ascidian in the Falkland Islands, in Spanish Islas Malvinas.

Remarks.

This genus has a posterodistal lobe on P5 basis like the members of Torometopa ; itis different from all other known stenothoid genera by the rectangularly widened, distally narrowing basis of P6, 7. In Metopella and Mesoproboloides P5 is rectolinear without a posterodistal lobe, P6, 7 are differently widened; in Hardametopa P5-7 all have a slender basis. The genera Metopelloides , Stenothoides , Vonimetopa and Zaikometopa differ in having a 1-articulate Md palp, while the palp is absent in Parametopella .