Hypotelus andinus ( Bernhauer, 1917 )

Bortoluzzi, Sidnei, Caron, Edilson & Ribeiro-Costa, Cibele S., 2017, Revision and phylogeny of Hypotelus Erichson: a Neotropical genus of minute rove beetles (Coleoptera, Staphylinidae, Piestinae), Zootaxa 4273 (4), pp. 451-487 : 461-462

Hypotelus andinus ( Bernhauer, 1917)

( Figs. 19 , 114 )

Piestus (Antropiestus) andinus Bernhauer, 1917: 45 (original description, type locality: ‘West-Kolumbien: Umgebung von Cali am Rio Cauca’); Scheerpeltz, 1933: 993 (distribution); Scheerpeltz, 1952: 295 (characters, distribution); Piestus andinus: Blackwelder, 1944: 100 (distribution); Herman, 2001: 1788 (distribution); Newton et al., 2005: 37 (distribution). Piestus (Antropiestus) strigipennis Bernhauer, 1921: 65 (original description, type locality; ‘ Bolivien: Yuracaris’); Scheerpeltz, 1933: 993 (distribution); Scheerpeltz, 1952: 295 (characters, distribution); Caron et al., 2012: 551 (as junior synonym). Piestus strigipennis: Blackwelder, 1944: 101 (distribution); Herman, 2001: 1795 (distribution).

Hypotelus andinus: Caron et al., 2012: 551 (redescription, lectotype designed, distribution, notes).

Type material. Piestus (Antropiestus) andinus Bernhauer, 1917 . Lectotype (designated by Caron et al. 2012) deposited in FMNH, male [damaged specimen: without right anterior leg] with labels: (1) “♂” [white label, handwritten, together with the specimen]; (2) “Columbia occ/Cali. Fassl” [white label/printed in black]; (3) “ Antropiestus / andinus /Brnh. Typus” [light yellow label, handwritten]; (4) “♂” [white label, printed in black]; (5) “LECTOTYPE/ Piestus andinus / Bernhauer, 1917 /det. E. Caron, 2009” [red label, printed in black]; (6) “Chicago NHMus/M.Bernhauer/Collection” [white label, printed in black]; (7) “FMNH-INS/0000 0 63 446” [white label, printed in black]; (8) "Photographed/Kelsey Keaton 2014/Emub Catalog" [blue label, printed in black].

Note: Caron et al. (2012) cited one paralectotype deposited in NMW (Naturhistorische Museum Wien, Wien, Austria).

Piestus (Antropiestus) strigipennis Bernhauer, 1921 . Syntype deposited in FMNH ( Caron et al. 2012) (not examined).

Diagnosis. Hypotelus andinus may be easily distinguished from other species of Hypotelus by the conspicuous, deep and large depression at the middle of the pronotum ( Fig. 19 ).

Redescription. BL: 6.1 mm, BW: 1.3 mm. Body slightly convex; dorsal surface matte, except elytra; entirely black with legs a little lighter ( Fig. 19 ). Dorsal integument of head and pronotum with fine punctures and granulate microsculpture; elytra each with one longitudinal finely punctate stria close to sutural margin, conspicuous only on basal half; metaventrite and abdomen with fine punctures and granulate microsculpture.

Male. Head. With five moderately sized punctures with long setae on basal half of dorsal margin of eyes; supra-antennal area visibly prominent. Antennae almost reaching apex of elytra; every antennomeres with some dispersed long setae, setae on inner face are longest; antennomere 3 longer than 2; 5–11 gradually increasing in length toward antennal apex. Labrum with median third deeply emarginate, three pairs of long setae medially; lateral thirds with two pairs of long setae, two apical and two subapical. Mandibles symmetrical, one acute tooth on each inner margin. Mentum 2 times as wide as long.

Thorax. Pronotum wider than long (PW/PL=1.25); anterior angles rounded and slightly prominent; apical twothirds with somewhat curved sides and basal one-third gradually narrowing toward the base; with complete internal mid-longitudinal ridge and conspicuous longitudinal median sulcus; conspicuous and deep large depression at middle. Elytra somewhat longer than wide (EL/BW=1.2), covering abdominal tergite 3.

Abdomen. Apical abdominal segments 8 to 10 and genitalia were not studied, but according to Caron et al. (2012) the shape of the structures are: sternite 8 with posterior margin truncate; tergite 9 with short ventral struts; tergite 10 with some long setae on apex and posterior margin with short fringes, basal half not divided longitudinally; sternite 9 with two pairs of long setae and truncate apex. Median lobe of aedeagus somewhat globose apex in lateral view, tube closed in dorsal view; length of parameres exceeds apex of median lobe by a little (see Caron et al. 2012, Figs. 248–250).

Female. Not examined. According to Caron et al. (2012) the female is similar to male except for: elytra a little shorter, covering only basal half of abdominal tergite 3; abdominal sternite 8 with pointed apex and short setae on posterior margin; tergite 10 divided longitudinally in basal half (see Caron et al. 2012, Fig. 151); ovipositor consisting of a pair of weakly pigmented hemisternites and a pair of more apical coxites, and with many long setae on apex (see Caron et al. 2012, Fig. 155). Spermatheca unknown.

Geographical records. In the current study, the species was examined from Colombia. Caron et al. (2012) also recorded it from Ecuador and Bolivia (Beni) ( Fig. 114 ).

Biological notes. Hypotelus andinus has been collected in a Malaise trap.

Figures

FIGURE 114. Geographical records of Hypotelus. Hypotelus andinus, Colombia, Ecuador and Bolivia; H. insulanus, Caribbean islands; H. marginatus, Colombia, Venezuela and Guatemala; H. testaceus, Panama; H. brevitarsus sp. nov., Panama. Countries without dots but colored represent the occurrence but no locality given.

FIGURES 9 – 19. Habitus, dorsal view. 9, Hypotelus insulanus, syntype, male; 10, H. praecox, lectotype, female; 11, H. scheerpeltzi sp. nov., holotype, male; 12, H. testaceus, syntype, male; 13, H. melanodelta sp. nov., holotype, female; 14, H. castaneus sp. nov., holotype, male; 15, H. brevitarsus sp. nov., holotype, male; 16, H. corniculatus sp. nov., holotype, female; 17, H. marginatus, syntype, male; 18, H. laevis, male; 19, H. andinus. Scale bars = 1 mm.