ampla (Arma) Walker 1867a: 138 . [Fig. 8]

Original data: “ a. Constancia, Rio Janeiro. Presented by the Rev. H. Clark. b. Rio Janeiro.” [two syntypes]

LECTOTYPE ♂ (designated by Thomas 1992: 52): purple-margined lectotype disc; green-margined type disc; “RIO JANEIRO Decr 1856. J. Gray. / 57. 57.”; “34. ARMA AMPLA .”; “NHMUK 010592413”. Fourth and fifth left antennomeres, fifth right antennomere, and left leg missing (Fig. 8).

Current status: Marmessulus nigricornis (Stål, 1865) (synonymised by Schouteden 1907: 26).

Notes: Thomas (1992: 52) explained: “I examined the male type of Arma ampla Walker, located in the British Museum (Natural History). It is labeled: (a) “Type,” (b) “57.57 Rio de Janeiro Dec 1856 J. Gray,” c) “ Arma ampla .”” It is clear from the original description (see above) that Walker had two specimens. We have found just one in the collection. By giving its exact label data and calling it “the male type”, Thomas has “unambiguously selected [this] particular syntype to act as the unique name-bearing type of the taxon” (ICZN 1999, Art. 74.5). The second specimen is missing or has not been recognised.