Mastinocerinae LeConte 1881
Creators: name: Roza, André Silva
Publisher: name: Zenodo
Year: 2023
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Coleoptera
Phengodidae

description: Key to the identification of Mastinocerinae genera with 12-segmented antennae and the first pro- and mesotarsomere with ventral combs
Adapted from Zaragoza-Caballero & Pérez-Hernández (2014), with modifications on couplet 16 and the addition of a new couplet. The key is presented here starting at couplet 12, which includes the Mastinocerinae with 12-segmented antennae and first pro- and mesotarsomere with ventral combs.
12. Only the first pro- and mesotarsomere with ventral combs ......................................................... 13
13. Mandibles without internal teeth ................................................................................................. 14
13’. Mandibles with internal teeth ................................................. Pseudomastinocerus Wittmer, 1963
14. Posterior pronotal margin continuous .......................................................................................... 15
14’. Posterior pronotal margin discontinuous, with medial region projected ......................................... ................................................................................................................. Phrixothrix Olivier, 1909
15. Antennomere IV–XI with double flabellae .................................................................................. 16
15’. Antennomere IV–X with double flabellae, XI enlarged and without flabellae ............................... .................................................................................................... Eurymastinocerus Wittmer, 1976
16. Tarsal combs as long as tarsus ..................................................................................................... 17
16’. Tarsal combs as long as half of tarsus ........................................................................................16a
16a. Labial palpi 2-segmented, tarsomere II as long as half of tarsomere I length ................................. ....................................................................................................................... Iviephengus gen. nov.
16a’. Labial palpi 3-segmented, tarsomere II subequal to tarsomere I length .......................................... .................................................................................................. Cephalophrixothrix Wittmer, 1976
17. Tarsal claws simple, without teeth ............................................................................................... 18
17’. Tarsal claws with thin teeth on claw base ............................................. Ptorthodius Gorham, 1881
18. Labial palpi 3-segmented ............................................................................................................. 19
18’. Labial palpi 2-segmented ............................................................. Mastinomorphus Wittmer, 1976
19. Two large and uneven tentorial pits, clypeus not projected, labrum dorsally visible ...................... ...................................................................................... Mastinocerus (Mastinocerus) Solier, 1849
19’. A single tentorial pit, clypeus projected, labrum not visible dorsally ............................................. .......................................................................... Mastinocerus (Paramastinocerus) Wittmer, 1976
description: Published as part of Roza, André Silva, 2023, A new genus and a new species of railroad-worm beetle from Peru (Coleoptera, Phengodidae, Mastinocerinae), pp. 64-76 in European Journal of Taxonomy 864 (1) on pages 65-66, DOI: 10.5852/ejt.2023.864.2087, http://zenodo.org/record/7818076