Paraneseuthia angustifurculata, Jałoszyński, Paweł, 2013

Jałoszyński, Paweł, 2013, Three new species of Paraneseuthia Franz from Australia (Coleoptera, Staphylinidae, Scydmaeninae), Zootaxa 3702 (6), pp. 566-572 : 570

Paraneseuthia angustifurculata sp. n.

( Figs. 3, 4 , 9–10 )

Type material. Holotype: AUSTRALIA (QUEENSLAND): ♂, three labels: " 11.45S 142.35E QLD / Heathlands 26Jan. - / 29Feb. 1992 P.Feehney / MALAISE #2 dump / open forest" [white, printed], "Aust. Nat. / Ins. Coll." [green, printed], " PARANESEUTHIA / angustifurculata m. / det. P. Jałoszyński, '13 / HOLOTYPUS " [red, printed] ( ANIC).

Diagnosis. Aedeagus in ventral view strongly narrowing from middle to apex; with short asetose lateral subapical lobes; with long and slender lateral apical projections with narrow distal parts, each bearing submedian seta.

Description. BL 0.78 mm. Body of male ( Fig. 3 ) moderately convex, dark brown, covered with vestiture slightly lighter than cuticle.

Head broad in relation to pronotum (PW/HW 1.33), broadest across the large and strongly convex eyes, HL 0.13 mm, HW 0.19 mm; vertex weakly convex; frons flattened and with a pair of shallow but distinct circular pits between eyes; supraantennal tubercles indistinct. Punctures on vertex and frons inconspicuous, fine and sparse; setae sparse and short, suberect. Antennae slender, AnL 0.30 mm, antennomeres I–II elongate, III–V as long as broad, VI–VIII slightly transverse, IX–X strongly transverse; XI about as long as IX–X together.

Pronotum semi-oval, broadest near base, barely noticeably broader than long; PL 0.23 mm, PW 0.25 mm; anterior margin weakly and evenly rounded; lateral margins strongly rounded in anterior half and weakly rounded in posterior third; posterior pronotal corners distinctly obtuse and blunt; posterior margin distinctly arcuate with short and shallow emargination in front of mesoscutellum; base with shallow but distinct transverse impression connected at each side with a distinct and nearly circular sublateral pit, lateral pits distinct and elongate, located anterolaterally in relation to sublateral pits. Punctures on pronotal disc fine and sparse; setae sparse but relatively long, suberect.

Elytra oval, broadest near middle; EL 0.43 mm, EW 0.34 mm, EI 1.26; humeral calli prominent, elongate. Punctures on elytral disc much more distinct than those on pronotum, small and shallow but obvious, separated by spaces subequal to puncture diameters; setae similar to those on pronotum, sparse, long and suberect. Hind wings well developed.

Legs moderately long and slender, unmodified.

Aedeagus ( Figs. 9–10 ) elongate; AeL 0.16 mm; in ventral view median lobe slightly asymmetrical in basal part and strongly narrowing distally; ventral membranous area ( Fig. 9 ; vma) small, circular and located at base; lateral subapical lobes ( Fig. 9 ; lsl) present, short, without apical setae; lateral apical projections ( Fig. 9 ; lap) present, symmetrical, flexible, slender and recurved, each with long seta located on external margin of submedian part; assemblage of median apical projections ( Fig. 9 ; map) nearly symmetrical, composed of lateral pair of elongate sclerites and median copulatory piece; parameres slender, each with very long apical and very short subapical seta.

Female. Unknown.

Distribution. Australia, Far North Queensland (Cape York) ( Fig. 4 c).

Etymology. The name angustifurculata refers to the slender lateral apical lobes of the aedeagus, after Latin angustus (narrow) and furcula (forks).

Remarks. See Remarks for P. dilatifurculata .

Figures

FIGURES 1 – 4. Habitus of holotype males (1 – 3) and distribution of Paraneseuthia in Australia (4), filled circles ― described species, empty circles ― undescribed species known from females only. Paraneseuthia bernierana sp. n. (1, 4 a); P. dilatifurculata sp. n. (2, 4 b); P. angustifurculata (3, 4 c); P. carltoni Jałoszyński, 2011 (4 d); and P. booloumba Jałoszyński, 2011 (4 e).

FIGURES 5 – 10. Aedeagus in ventral (5, 7, 9) and lateral (6, 8, 10) views. Paraneseuthia bernierana sp. n. (5 – 6); P. dilatifurculata sp. n. (7 – 8); P. angustifurculata (9 – 10). Abbreviations: lap, lateral apical projection; lsl, lateral subapical lobe; map, median apical projection; vma, ventral membranous area.