Abstract
In this contribution, supplementary descriptions of Cyphoderus innominatus Mills, 1938 and C. limboxiphius nitricola Rapoport & Izarra, 1962 are provided; and three new species are described: C. adversus sp. nov., C. amazonicus sp. nov., and C. parafolsomi sp. nov.; chaetotaxy for all of them is included. The new species have a labial triangular field with a1-5, m, e, l1 smooth chaetae, and l2 as reduced spine, but C. adversus sp. nov. is characterized by a trochateral organ with at least 9 spine-like chaetae; tenent hair capitate; colophore chaeta D mic, lateral flap chaetae with uneven length; dens with De1-De6/Di1-Di6 feathered chaetae; mucro only with a, while C. amazonicus sp. nov. is differentiated by a trochateral organ with at least 16 spine-like chaetae; tenent hair acuminate; colophore chaeta D mac, lateral flap chaetae small and subequal; dens with De1-De6/Di1-Di5 feathered chaetae; mucro with aA. Cyphoderus parafolsomi sp. nov. has trochateral organ with more than 14 spine-like chaetae; unguis with 1 unpaired internal tooth; tenent hair capitate; dens with De1-De6/Di1-Di5 feathered chaetae; mucro with aA. A key for identification of the Neotropical species is provided. Also, the paper describes the information about the association of Cyphoderus with different ant species, and a new taxonomic status for C. nitricola (Rapoport & Izarra, 1962) comb. nov.
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