Pseudorygmodus, Hansen, 1999

FIKÁýEK, Martin & VONDRÁýEK, Dominik, 2014, A review of Pseudorygmodus (Coleoptera: Hydrophilidae), with notes on the classification of the Anacaenini and on distribution of genera endemic to southern South America, Acta Entomologica Musei Nationalis Pragae 54 (2), pp. 479-514 : 494

Key to species of Pseudorygmodus

1. Whole dorsal surface uniformly dark, at most with indistinctly de¿ned paler coloration along lateral margins of elytra and pronotum ( Figs 1–2 ). Maxillary palpi tickened in both sexes, moderately so in females, extremely so in males ( Figs 49–50 ). Metaventrite and abdominal ventrites with very sparse long pubescence ( Figs 40, 47 ). Male metatibiae with a pair of flat buldges on inner face, male femur with one such bulge on posterior margin, female without such bulges ( Figs 43 , 53–54 ). Elytral punctation coarse ( Figs 1–2 ). Parameres not widened apically, apex simply rounded ( Fig. 59 ). Body larger (3.9– 4.4 mm). ............................................. Pseudorygmodus flintispangleri ( Moroni, 1985)

– Dorsal surface bicolored, with wide, sharply de¿ned, yellow lateral portions of elytra and pronotum ( Figs 5–7 ). Maxillary palpi not thickened, of the same shape in both sexes ( Figs 51–52 ). Metaventrite and abdominal ventrites with dense pubescence ( Figs 42, 48 ). Metafemora and metatibiae of both sexes simple, without flat bulges on inner or posteri- or margins ( Figs 55–56 ). Elytral punctation ¿ne ( Figs 5–6 ). Parameres widened apically ( Fig. 60 ). Body smaller (3.2–4.1 mm). .................. Pseudorygmodus versicolor sp. nov.

Figures

Figs 1–7. Habitus of the species of Pseudorygmodus Hansen, 1999. 1–3 – P.flintispangleri (Moroni, 1985), male from Magellanes: Fiordo Eyre (1 – dorsal, 2 – lateral, 3 – frontal); 4 – same species, female from PN Puyehue. 5–7 – P.versicolor sp. nov., female from PN Nahuelbuta, Estero Agua de los Gringos (5 – dorsal, 6 – lateral, 7 – frontal).

Figs 49–61. Morphological details of adults of Pseudorygmodus Hansen, 1999. 49–52 – maxillary palpus, ventral view (49 – P.flintispangleri (Moroni, 1985), male; 50 – P.flintispangleri, female; 51 – P. versicolor sp. nov., male; 52 – P. versicolor, female). 53–56 – metatibia, ventral view (53 – P. flintispangleri, male; 54 – P.flintispangleri, female; 55 – P. versicolor, male; 56 – P. versicolor, female). 57–58 – labrum, dorsal view (57 – P.flintispangleri, 58 – P. versicolor). 59 – aedeagus of P. flintispangleri. 60–61 – male genitalia of P. versicolor (60 – aedeagus, 61 – sternite 9).

Figs. 39–48. Ventral morphology of Pseudorygmodus Hansen, 1999, SEM micrographs. 39–40, 43–44, 46–47 – P. flintispangleri (Moroni,. 1985), male; 41–42, 45, 48 – P. versicolor sp. nov. 39, 41 – mesoventrite; 40, 42 – meso- and metaventrite; 43 – male metafemur and metatibia; 44–45 – detail of epipleuron; 46 – detail of pronotum; 47–48 – detail of abdominal ventrites.