Twenty-one new species of Omaliini from the Papuan Region (Coleoptera: Staphylinidae: Omaliinae), with diagnostic and faunistic notes on some species of the genus Paraphloeostiba Steel, 1960 Author Shavrin, Alexey V. text Zootaxa 2024 2024-03-14 5424 3 251 307 http://dx.doi.org/10.11646/zootaxa.5424.3.1 journal article 10.11646/zootaxa.5424.3.1 1175-5326 10821214 DE26201A-252D-40D3-A5CF-FCCC6B3C2D01 Paraphloeostiba papuana ( Cameron, 1931 ) ( Figs 92–96 ) Phloeonomus papuanus Cameron, 1931: 356 Phloeonomus ( Phloeonomus ) papuanus : Scheerpeltz 1933: 1050 Paraphloeostiba papuana : Steel 1960: 153 , Shavrin 2023b: 493 Material examined. INDONESIA : WESTERN NEW GUINEA : 1 ♀ : ‘ IRIAN JAYA : Nabire Prov. Nabire— Ilaga , km 54 X.1997 , ca. 750m , light leg. M. Balke ( LUX 54 )’ ( NMW ); 1 ♂ , 5 ♀♀ : ‘ NEW GUINEA Okapa 17. V .1965 dead mouse’, ‘ R . Hornabrook | BM 1970-232 .’ ( BMNH ); 4 ♀♀ : ‘ NEW GUINEA Okapa , 6.VIII.1965 , forest litter’, ‘ R . Hornabrook | BM 1970-232 .’ ( BMNH ); 1 ♀ : ‘ NEW GUINEA North Fore , Offafina , 6000ft , 28. V .1965, dead branches’, ‘ R . Hornabrook | BM 1970-232 .’ ( BMNH ) . Remarks. Phloeonomus papuanus was originally described from Papua New Guinea . Steel (1960) redescribed it and transferred to the genus Paraphloeostiba . Shavrin (2023b) redescribed it and illustrated the spermatheca for the first time. The body length of this species can vary from 1.27 to 1.85 mm ( holotype ). Prior to the present study, the male of P. papuana was unknown. The description of the male is presented below. Male. Posterior margin of abdominal tergite VIII rounded ( Fig. 94 ). Posterior margin of abdominal sternite VIII strongly and widely concave ( Fig. 95 ). Aedeagus (AedL: 0.40) with very wide basal portion, gradually narrowed toward narrow median lobe with small rounded apex; parameres slightly not reaching apex of median lobe, with strongly broadened apical portions, with two long apical and several short preapical setae, middle portions of each paramere with several very short setae; internal sac moderately long and narrow, with three elongate sclerotized structures in basal portion ( Fig. 92 ). Lateral aspect of the aedeagus as in Fig. 93 . Paraphloeostiba papuana is known from several localities in Western New Guinea ( Indonesia ) and eastern part of Papua New Guinea ( Fig. 96 ). The species was collected at altitudes from 396 to 1828 m a.s.l. Some specimens from Western New Guinea were collected on dead mouse, in forest litter and dead branches.