Abstract
Neotropical genera of Cephenniini characterized by an additional leg ‘segment’ (‘trochantellus’) are revised, and the following new taxa are described: Shyrigen.n., Shyri pichinchasp.n. (type species of Shyri) (Ecuador), Shyri perversussp.n. (Ecuador), Shyri quitusp.n. (Ecuador), Shyri microphthalmussp.n. (Ecuador), Monstrophenniumgen.n. (type species: Cephennium spinicolle Schaufuss), Furcodesgen.n., Furcodes apicalissp.n. (type species of Furcodes) (Mexico), Furcodes tutulesp.n. (Honduras), Paracephennium pumiliosp.n. (Costa Rica), Pseudocephennium iwokramanumsp.n. (Guyana), Pseudocephennium trilineatumsp.n. (Guyana), Pseudocephennium araguanumsp.n. (Venezuela), Pseudocephennium maximumsp.n. (Venezuela), Pseudocephennium peruvianumsp.n. (Peru), Pseudocephennium cochabambanumsp.n. (Bolivia), Pseudocephennium saramaccanumsp.n. (Suriname) and Pseudocephennium brokopondonumsp.n. (Suriname). Pseudocephennium spinicolle (Schaufuss) is transferred to Monstrophennium. Cladistic analysis of characters from adult morphology of all genera of Cephenniini and a large outgroup sample from Cyrtoscydmini, Eutheiini, Scydmaenini, Clidicini and Mastigini strongly supported the monophyly of Cephenniini. However, only the Cephennomicrus group comprising nine genera was strongly supported as a monophyletic clade, while only weak support was found for the previously suggested Cephennodes group and Cephennium group. Two alternative hypotheses concerning the phylogeny of Cephenniini are put forward and discussed: (i) the Cephennium group is sister to all remaining Cephenniini; or (ii) the Cephennomicrus group is sister to all remaining Cephenniini. The Neotropical genera with ‘trochantellus’ form a well‐supported clade derived from the ancestral lineage of the Cephennodes group.
Published Version
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