Stenomalium picipenne ( Fauvel, 1867 ) Shavrin, 2022

Shavrin, Alexey V., 2022, On some species of Omaliini McLeay, 1825 of Chile (Coleoptera: Staphylinidae: Omaliinae), Zootaxa 5141 (2), pp. 174-182 : 179-180

Stenomalium picipenne ( Fauvel, 1867) comb. nov.

( Fig. 4 )

Omalium picipenne Fauvel, 1867: 44 [= 1868: 49]

Omalium (Omalium) picipennis: Bernhauer & Schubert 1910: 55

Omaliopsis (?) picipenne: Coiffait & Saiz 1968: 452

Type material examined. Syntype ♀ ( Fig. 4 ; right antennomeres 5–11 missing): ‘Chili’ <handwritten>, ‘picipenne | Fvl.’ <handwritten>, ‘ R I.Sc.N.B. 17.479 | Coll. et det A. Fauvel’ <printed>, ‘Stenomalium’ <handwritten>, ‘Syntype’ <label printed in red, with black frame>, ‘ Stenomalium | picipenne ( Fauvel, 1867) | Shavrin A.V. det. 2022’ <printed> ( IRSN).

Remarks. Omalium picipenne was originally described based on an unspecified number of syntypes from the unknown locality in Chile. Coiffait & Saiz (1968) redescribed it as “ Omaliopsis (?)”. I studied slightly damaged syntype ( Fig. 4 ) and found that based on the shapes of the body and the maxillary palpomere, and the structure of the carinate mesosternum in the anterior portion, it belongs to the genus Stenomalium Blackwelder, 1943 (see other morphological details in Bernhauer 1939 and Cameron 1945).

Stenomalium was originally described by Bernhauer (1939), but he did not designate the type spesies, so the name was unavailable ( Herman 2001). Blackwelder (1943) redescribed it as a subgenus of Omalium , designated the type species and therefore he is the author of this taxon ( Herman 2001). Steel (1960) elevated Stenomalium to the genus level. Stenomalium contains 15 species, known from New Zealand and New Caledonia ( Klimaszewski et al. 1996, Thayer 1996, Herman 2001). The genus requires revision because some species which were attributed to Stenomalium may belong to other taxa ( Klimaszewski et al. 1996). The genus Stenomalium is recorded here from South America for the first time.

Figures

FIGURES 1–6. Habitus of species of Omaliini: 1—Omaliopsis russata (male, syntype), 2—O. russata (Chile, Aguas Calientes), 3—O. struyvei (holotype), 4—Stenomalium picipennis (syntype), 5—S. sp. (female; Chile, Corral), 6—Xenanthobium andicola (Chile, Corral). Scale bar: 1.0 mm.