Alloraphes dentatus, Jałoszyński, Paweł, 2013

Jałoszyński, Paweł, 2013, Revision of the Neotropical genus Alloraphes Franz (Coleoptera: Staphylinidae: Scydmaeninae), Zootaxa 3750 (5), pp. 549-568 : 564-565

Alloraphes dentatus sp. n.

( Figs. 8 , 38–39 , 55–56 , 68 )

Type material. Holotype: Peru (San Martín): ♂, four labels: "Umg. Tarapoto / Peru, lg. Franz" with "SA131" on reverse side [white, printed; reverse handwritten in blue ink]; " Alloraphes / peruanus m. / det. H. Franz" [white, handwritten and printed]; " Typus " [red, handwritten]; " ALLORAPHES / dentatus m. / det. P. Jałoszyński '13 / HOLOTYPUS " [red, printed] (NHMW).

Diagnosis. Male: frons and vertex confluent, without impression; pronotum with bi-arcuate ante-basal transverse groove with indistinct median pit; elytra unmodified; aedeagus in ventral view with nearly symmetrical apex of median lobe, long and strongly asymmetrical set of apical projections and broad, dentate apices of parameres each bearing three thin and short setae. Female diagnostic characters unknown.

Description. Body of male ( Fig. 8 ) strongly convex, brown, covered with light brown vestiture; BL 0.86 mm.

Head broadest at large, strongly convex and moderately coarsely faceted eyes, HL 0.13 mm, HW 0.20 mm; tempora absent, eyes adjacent to occipital constriction; vertex and frons confluent and without impression, median part of vertex slightly more convex than sides; anterior part of frons flat; supraantennal tubercles feebly marked. Punctures on frons and vertex inconspicuous, fine; setae short, sparse and suberect. Antennae slender, AnL 0.38 mm; antennomere I about 1.5x as long as broad; II 1.8x as long as broad; III–VI each about as long as broad; VII slightly transverse; VIII distinctly transverse; IX–X each slightly transverse; XI about 1.6x as long as broad and about 1.5x as long as X.

Pronotum slightly elongate, broadest in anterior third; PL 0.24 mm, PW 0.21 mm. Anterior margin and lateral margins in anterior fourth strongly rounded; sides distinctly but slightly narrowing caudad, pronotum distinctly constricted near posterior third; posterior margin arcuate with distinct median flattening in front of mesoscutellum; ante-basal transverse groove distinct and bi-arcuate, with indistinct median pit and moderately large and shallow lateral impressions. Punctures on pronotal disc inconspicuous, fine and sparse, those behind ante-basal groove more distinct and unevenly distributed; setae moderately dense, short and nearly recumbent, sides of pronotum with moderately long and disordered bristles.

Elytra more convex than pronotum, oval and unmodified, broadest between middle and anterior third; EL 0.50 mm, EW 0.40 mm, EI 1.25; sub-humeral lines sharply marked and about as long as 0.4 EL. Punctures on elytra more distinct than those on pronotum but still small, shallow and with diffused margins, separated by spaces comparable to puncture diameters; setae moderately long, sparse and suberect. Hind wings well developed.

Legs long and slender; all tibiae straight.

Aedeagus ( Figs. 38–39 , 55–56 ) slender and lightly sclerotized; AeL 0.24 mm; in ventral view apical part of median lobe nearly symmetrical and with deeply and broadly emarginated apical margin; apical projections long, complex and asymmetrical; parameres in lateral view with rapidly expanded apical parts, each with three distinct denticles and three thin and short setae.

Female. Unknown.

Distribution. Northern Peru ( Fig. 68 f).

Etymology. The name dentatus refers to the shape of parameres, which bear remarkable tooth-like projections.

Remarks. See remarks for A. peruanus .

Figures

FIGURE 68. Distribution of Alloraphes: a, A. jamaicae Franz; b, A. chiapasensis Franz; c, A. yucatani Franz; d, A. lenkoi Franz; e, A. peruanus Franz; f, A. dentatus sp. n.; g, A. peckorum sp. n.; h, A. myrmecophilus Franz stat. rest.; i, A. bolivarensis Franz; j,? Alloraphes magnus Franz.

FIGURES 1 – 12. Dorsal (1 – 9, 11 – 12) and laterodorsal (10) habitus of Alloraphes Franz. Alloraphes jamaicae Franz, holotype male (1); A. chiapasensis Franz, holotype male (2); A. yucatani Franz, holotype male (3); A. lenkoi Franz, paratype male (4) and paratype female (5); A. peruanus Franz, holotype male (6) and paratype female (7; but see the Remarks section in the redescription); A. dentatus sp. n., holotype male (8); A. peckorum sp. n., holotype male (9 – 10); A. myrmecophilus Franz, stat. rest., paratype male (11);? Alloraphes magnus Franz, holotype female (12).

FIGURES 27 – 43. Aedeagus (27 – 34, 36 – 43) and female genitalia (35) of Alloraphes Franz in ventral (27, 29, 31, 33, 35, 36, 38, 40, 42) and lateral (28, 30, 32, 34, 37, 39, 41, 43) views. Alloraphes jamaicae Franz, holotype (27 – 28); A. chiapasensis Franz, holotype, parameres missing (29 – 30); A. yucatani Franz, holotype (31 – 32); A. lenkoi Franz, paratypes (33 – 35); A. peruanus Franz, holotype (36 – 37); A. dentatus sp. n., holotype (38 – 39); A. peckorum sp. n., holotype (40 – 41); A. myrmecophilus Franz, stat. rest., paratype (42 – 43). Abbreviations: ap, apical projection; bpa, basal pumping apparatus; ov, egg; sp, spermatheca.

FIGURES 44 – 60. Aedeagus (44 – 51, 53 – 60) and female genitalia (52) of Alloraphes Franz in ventral (44, 46, 48, 50, 52, 53, 55, 57, 59) and lateral (45, 47, 49, 51, 54, 56, 58, 60) views. Alloraphes jamaicae Franz, holotype (44 – 45); A. chiapasensis Franz, holotype, paramere detached (46 – 47); A. yucatani Franz, holotype (48 – 49); A. lenkoi Franz, paratypes (50 – 52); A. peruanus Franz, holotype (53 – 54); A. dentatus sp. n., holotype (55 – 56); A. peckorum sp. n., holotype (57 – 58); A. myrmecophilus Franz, stat. rest., paratype (59 – 60). Abbreviations: ap, apical projection; bpa, basal pumping apparatus; ov, egg; sp, spermatheca.