Acritus (Acritus) nigricornis (Hoffmann)

Penati, Fabio, 2009, An updated catalogue of the Histeridae (Coleoptera) of Sardinia, with faunistic, zoogeographical, ecological and conservation remarks *, Zootaxa 2318, pp. 197-280 : 232-233

35. Acritus (Acritus) nigricornis (Hoffmann)

Acritus seminulum K.: Bertolini 1904: 49

Acritus (Acritus) seminulum Küst. : Porta 1926: 383 Literature data. “All of Italy ” ( Porta 1926). “ Sardinia ” ( Bargagli 1871; Bertolini 1904; Luigioni 1929; Barajon 1966; Vienna 1980; Audisio et al. 1995; Yélamos & Lackner 2004). Cagliari prov.: Bivio Chia, 4.V.1995, dry grass, FA, 2 ex (CFA). Cagliari, 15.II.1883, AD, 2 ex ( CAD); idem, sd, UL, 2 ex ( CAD, CUL). Monti dei Sette Fratelli, Monte Cresia, 700 m, 11.VIII.1988, sieving under half-fresh cow dung, CM, 1 ex (CCMe). Nuoro prov.: Cala Gonone, 24.IV.2003, ADg, 1 ex (CFP). Orune, sd, 5 ex ( CAD ex-coll. L. Demarchi). Siniscola, Monte Albo, Punta Cupetti, 550–650 m, 4.V.1995, oak stand, FA, 1 ex (CFA). Villanova Strisaili, dint., 1000 m, 23.V.1974, VR, 1 ex (CFP). Oristano prov.: Oristano, 19.V.1902, AD, 1 ex ( CAD); idem, sd, 1 ex (CGB). Sassari prov.: Tempio Pausania, 21.IV.1903, AD, 1 ex ( CAD).

Unpublished records. “ Sardinia ”, sd, UL , 1 ex ( CAD). Cagliari prov. : Cagliari, stagno di Molentargius, III.1938, UL , 1 ex ( CUL). Soléminis, III.1936, UL , 1 ex (CUL).

Chorotype. Subcosmopolitan, present in the Palearctic, Afrotropical and Australian regions ( Yélamos 2002).

Italian distribution. Piedmont, Lombardy, Trentino-Alto Adige, Venetia, Friuli-Venezia Giulia, Liguria, Emilia-Romagna, Tuscany, Marches, Latium, Campania, Apulia, Basilicata, Calabria, Sicily and Sardinia.

Ecology. Occurs in all sorts of decomposing organic matter: dry excrements, rotten fruit, humus, fungi, rotting wood; it seems to feed on mites, small insects and fungal spores.

Notes. In Penati and Vienna (2002, 2005, 2006a) the specimen from Oristano (CGB) is listed as Acritus (Acritus) italicus Reitter , because kept under such name in the Binaghi collection (CGB), whereas the specimens from Cagliari, Oristano and Tempio Pausania ( CAD) were attributed, due to a writing error, to Acritus (Acritus) minutus (Herbst) . Having personally re-examined these specimens, I can confidently state that, in reality, they all belong to A. (A.) nigricornis .