Alloraphes chiapasensis Franz

Jałoszyński, Paweł, 2013, Revision of the Neotropical genus Alloraphes Franz (Coleoptera: Staphylinidae: Scydmaeninae), Zootaxa 3750 (5), pp. 549-568 : 558-560

Alloraphes chiapasensis Franz

( Figs. 2 , 29–30 , 46–47 , 62 , 68 )

Alloraphes chiapasensis Franz, 1994: 378 , Fig. 74.

Type material. Holotype: Mexico (Chiapas): ♂, four labels ( Fig. 62 ): "Tuxla [sic!]-Gutierrez / Chiapas, Mexico " with illegible code on reverse side [white, printed; reverse handwritten in blue ink]; " Alloraphes / chiapasensis / m. / det. H. Franz" [white, handwritten and printed]; male symbol [white, printed]; " Holotypus " [red, handwritten] (NHMW).

Revised diagnosis. Male: frons flat and sharply demarcated from convex vertex; pronotum with bisinuate ante-basal transverse groove divided into lateral arcs by distinct median pit; elytra modified, with distinctly impressed apical region; aedeagus in ventral view with distinctly asymmetrical apex of median lobe, long and flat apical projections and parameres gradually narrowing to pointed apices, each bearing two thin and short setae. Diagnostic characters of females unknown.

Redescription. Body of male ( Fig. 2 ) moderately strongly convex, brown, covered with light brown vestiture; BL 1.08 mm.

Head broadest at large, strongly convex and moderately coarsely faceted eyes, HL 0.18 mm, HW 0.23 mm; tempora in dorsal view much shorter than eyes; vertex convex, its anterior margin sharply demarcated from flat frons; supraantennal tubercles feebly marked. Punctures on frons and vertex inconspicuous, fine; setae short, sparse and suberect. Antennae slender, AnL 0.43 mm; antennomeres I and II each about twice as long as broad; III barely longer than broad; VI about 1.2x as long as broad; V–VI each about 1.1x as long as broad; VII–IX each about as long as broad; XI about 1.5x as long as X and 1.5x as long as broad.

Pronotum slightly elongate, broadest in anterior fourth; PL 0.28 mm, PW 0.26 mm. Anterior margin and lateral margins in anterior third strongly rounded; sides distinctly narrowing caudad, pronotum slightly constricted near posterior fourth; posterior margin slightly arcuate; ante-basal transverse groove distinct and divided by small median pit into lateral arcs convex anteriorly; lateral pits indistinct. Punctures on pronotal disc inconspicuous, fine and sparse; setae sparse, short and suberect, sides of pronotum with long and disordered bristles.

Elytra more convex than pronotum, oval, broadest slightly anterior to middle; EL 0.63 mm, EW 0.48 mm, EI 1.32; sub-humeral lines sharply marked and as long as 1/4 EL; elytral apices distinctly impressed. Punctures on elytra distinct but small and shallow, separated by spaces 1–1.5x as wide as puncture diameters; setae moderately long, sparse and suberect; each elytral apex with several slightly longer suberect setae directed postero-mesally. Hind wings well developed.

Legs long and slender; all tibiae straight.

Aedeagus ( Figs. 29–30 , 46–47 ) in the only known male specimen partly damaged during previous preparation, with detached parameres, slender and moderately darkly sclerotized; AeL 0.30 mm; in ventral view apical part of median lobe distinctly asymmetrical and with deeply but narrowly emarginated apical margin; apical projections long and flattened dorso-ventrally; parameres broad and gradually narrowing to pointed apices, each with two thin and short setae.

Female. Unknown.

Distribution. Southern Mexico ( Fig. 68 b).

Remarks. The name "Tuxla" on the label is misspelled Tuxtla-Gutiérrez. Franz (1994) gives further collecting data: a canyon in dried forest, sifted from leaf litter, 11.vi.1992.

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.

FIGURES 61 – 67. Original sets of labels pinned under historical type specimens. Alloraphes jamaicae Franz, holotype (61); A. chiapasensis Franz, holotype (62); A. yucatani Franz, holotype (63); A. lenkoi Franz, paratype (64); A. peruanus Franz, holotype (65); A. myrmecophilus Franz, stat. rest., paratype (66);? Alloraphes magnus Franz, holotype (67).