Naddia sarahae, De, 2014

De, G., 2014, The genus Naddia in Borneo (Coleoptera: Staphylinidae: Staphylininae), Linzer biologische Beiträge 46 (2), pp. 1737-1765 : 1757-1758

Naddia sarahae nov.sp.

Figs 15, 15a, 15al)

Holotype: SABAH, Danum Valley , B.R.L, f.i.t., 14-16.II.2007, G. de Rougemont (in RCO); 1 paratype: MALAYSIA, Sabah, Lahad Datu, Ulu Segama For. Res. Danum Valley Forest Centre , 04˚57.9’N 117˚48.1’E, 200 m alt., 21.xi.2005, 1˚ Forest, FIT, coll. Mann, Slade & Villanueva, Flight Interception Trap, Lowland, mixed Dipterocarp Forest, West Trail area, OUMNH-2006-051 (in OUMNH); 1 paratype: MALAYSIA, Sabah, Lahad Datu, Ulu Segama For. Res. Danum Valley Forest Centre , 04˚57.9’N 117˚48.1’E, 200 m alt., xi.2005, 1˚ Forest, FIT, coll. Mann, Slade & Villanueva, OUMNH-2006-051 (in OUMNH); 1 paratype: MALAYSIA, Sabah, Lahad Datu , Ulu Segama For. Res. Danum Valley Forest Centre , 04˚58’N 117˚42’E, 450 m alt, viii.1998, 1˚Forest, coll. D. Bebber, Flight Interception Trap, Lowland, mixed Dipterocarp Frst., OUMNH-2006-050 (in OUMNH); 1 paratype: MALAYSIA, Borneo , Sabah, Ulu Segama Forest Reserve Danum Valley Conservation Area , ca. 10 km from Danum Valley F.C ., Borneo Rainforest Lodge area , Plot 4, 12.III.2004, F.I.Trap, ca N05˚02 E117˚45/55 Leg. E. Slade + J. Villanueva (in OUMNH).

Additional material: 1: Malaysia, Sabah, ca. 25 km S Sapulut, Batu Punggul env. Primary forest, intersept (sic.) trap, 23.5.2001, J.F. Kočiam (sic.) lgt. (in NHMW) ; 1 MALAYSIA, Sabah, Tawau, 8-14.ix.2012, 4.76N 117.52E, 399 m Alt., Coll. C.L. Gray, SAFE project area, F.I.T Riparian forest strip in oil palm, OUMNH-2013-456 (in CRL) ; 1: THAILAND, Doi Inthanon , 15.III.1982, G. de Rougemont (in CRL) .

Description: Proportions of holotype: length: 19.5 mm; length of head: 2.9; total length of head: 3.6; breadth of head: 3.6; length of eye: 1.1; length of temple: 2.0; length of antenna: 3.8; length of pronotum: 3.5; breadth of pronotum: 3.2; length of elytron: 3.7; breadth of elytra: 4.1. Habitus: fig. 15.

Eyes of average size, not very protruberant laterally because slightly displaced towards dorsal surface of head. Antennomeres 1-3 slightly elongate, the third clavate., 4-5 subquadrate, 6-10 transverse, only 9 and 10 very slightly asymmetrical.

Integument black, except apical margin of abdominal tergite VII and segments VIII and IX rufescent; antennae and legs black. Disc of head and frons glabrous, apart from a fringe of small pale setae along anterior margin and a very few long black setae, one on antero-lateral margin, one near inner margin of eye, and 2-4 others on temples; temples in addition with dense, forwardly directed short setae. Pronotum with sparse, very fine pale hairs on disc, the sides with numerous stout black setae of unequal sizes; pubescence of elytra characteristic: surface of inner 1/3rd of disc of each elytron with dense recumbent coarse black pubescence obscuring the fine sculpture, mixed with sparse, scattered erect fine pale and dark setae; middle of each elytron with a long arcuate line of short stout brassy hairs (comparable to N. brendelli ), but the line narrower and fringed on the inside with coppery red hairs; both brassy and coppery hairs directed outwardly; lateral and posterior areas if disc with numerous short black setae mixed with a few much longer setae; centres of abdominal tergites III-VI with recumbent black hairs, the anterolateral angles of tergite III-V with decreasingly extensive patches of brassy hairs, the postero-lateral margins of tergites IV-VI with a few silvery hairs; tergite VII with a very few, very short silvery hairs anteriorly, the centre glabrous, the posterior margins and especially postero-lateral angles with very dense recumbent coppery-red pubescence; tergite VIII also with coppery-red pubescence, especially on sides.

Sculpture of head composed of the usual pattern of round umbilicate punctures on sides and near posterior margin and long rugae on disc and frons; sculpture of pronotum fairly coarse, the interstices between umbilicate punctures forming longitudinal rugae in posterior half and oblique rugae anteriorly; sculpture of elytra like that of N. brendelli and N. limbifer , dull and fine on either side of suture, shiny and very coarse, composed of large umbilicate punctures and short transverse rugae on the lateral sides of the arcuate line of coloured pubescence; abdominal tergites shiny, with micro-sculpture and fairly dense simple puncturation; middle of tergite VII very dull, with extremely fine and dense micro-sculpture and much sparser punctures.

Male: sternite VII modified; sternite VIII with a broad, very shallow emargination; aedoeagus: figs 15a, 15al, the median lobe not very long, broad, the apex abruptly widened into a transverse subquadrate end comparable to that of N. barbarossa , hollow on the dorsal side; ventral extension of basal sclerite dark and glossy, apically bifurcate; paramere broad, about 3 times wider than its length, sub-truncate with rounded anterior angles, nearly divided into two lobes by a deep narrow median notch.

Although such a distribution seems unlikely, I must, at least provisionally, attribute the specimen from northern Thailand to this species because can find no differences between it and those from Borneo.

Derivation of specific epithet: named after Sarah de Rougemont, in memory of happy days in Borneo in March 1990.