Hypotelus brevitarsus Bortoluzzi & Caron

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 : 462-463

publication ID

https://doi.org/ 10.11646/zootaxa.4273.4.1

publication LSID

lsid:zoobank.org:pub:310C1107-096C-4C9B-A131-B0F69DB938E8

DOI

https://doi.org/10.5281/zenodo.6017728

persistent identifier

https://treatment.plazi.org/id/03DB878D-FF9D-D537-CEB5-FADDD773F9F5

treatment provided by

Plazi

scientific name

Hypotelus brevitarsus Bortoluzzi & Caron
status

sp. nov.

Hypotelus brevitarsus Bortoluzzi & Caron View in CoL sp. nov.

( Figs. 15 View FIGURES 9 – 19 , 39 View FIGURES 36 – 47. 36 – 38 , 58 View FIGURES 48 – 58 , 69, 70 View FIGURES 59 – 74 , 80 View FIGURES 75 – 82 , 98, 99 View FIGURES 83 – 108 , 114 View FIGURE 114 )

Type material. Holotype deposited in FMNH, male (photo, Fig. 15 View FIGURES 9 – 19 ), with labels: (1) “ PANAMA: Chiriqui Prov. “ Barca ” area, Finca / Lerida nr. Boquete./III:12:1959 5650 ft.” [white label, printed in black; day and elevation handwritten]; (2) “under slab on/pile of cut chips/and bark” [white label, printed in black]; (3) “leg./ H. S. Dybas ” [white label, printed in black]; (4) “ HOLOTYPE / Hypotelus brevitarsus / Bortoluzzi & Caron ” [red label, printed in black].

Paratypes: 11 specimens, deposited in FMNH. 1 male, dissected, whole specimen fixed on acetate plastic card covered with Canada balsam, with the same three first labels of holotype: (4) “ PARATYPE / Hypotelus brevitarsus / Bortoluzzi & Caron ” [yellow label, printed in black] . 1female, dissected, terminalia fixed on acetate plastic card covered with Canada balsam, with same three first labels of holotype: (4) “ PARATYPE / Hypotelus brevitarsus / Bortoluzzi & Caron ” [yellow label, printed in black] . 1 female, dissected, terminalia fixed on acetate plastic card covered with Canada balsam, with same three first labels of holotype, except for the date: “III:14:1959.”: (4) “ PARATYPE / Hypotelus brevitarsus / Bortoluzzi & Caron ” [yellow label, printed in black] . 7 specimens, sex undetermined, with same three first labels of holotype: (4) “PARATYPE/ Hypotelus brevitarsus /Bortoluzzi & Caron” [yellow label, printed in black]; one specimen of them with additional label: (4) “ Hypotelus /det. Newton 1994” [white label, first line, handwritten; second line, printed in black]; (5) “PARATYPE/ Hypotelus brevitarsus / Bortoluzzi & Caron” [yellow label, printed in black]. 1 specimen, sex undetermined, with same three first labels of holotype, except for the date: “III:14:1959.”: (4) “PARATYPE/ Hypotelus brevitarsus /Bortoluzzi & Caron” [yellow label, printed in black].

Additional material. See Appendix 2.

Diagnosis. Hypotelus brevitarsus sp. nov. is similar to H. pusillus and differs by the antennal scape of male without prominent tooth on inner face; the antennae shorter, not reaching half-length of elytra; and tergite 10 with lateral sides at posterior margin emarginated in both sexes ( Figs. 58 View FIGURES 48 – 58 , 98 View FIGURES 83 – 108 ), besides the genital structures (see below). H. brevitarsus sp. nov. may be distinguished from other species of Hypotelus by the metatarsomeres 5 somewhat shorter and transverse ( Fig. 39 View FIGURES 36 – 47. 36 – 38 ), although in some specimens this is not so prominent.

Description. BL: 2.2–2.9 mm, BW: 0.6–0.8 mm. Body slightly convex; dorsal surface glossy; brown (elytra yellow); appendages lighter, except mandibles. Dorsal integument of head and pronotum with dispersed fine punctures and undulate microstriae only on margins; elytra with dispersed fine punctures and only one longitudinal finely punctate stria close to elytral suture.

Male. Head. Supra-antennal area slightly prominent. Antennae reaching humeral angle; antennomeres 5, 7, 9 and 11 with longest setae on inner face; antennomeres 2 and 3 of equal length, 5–11 gradually increasing in length toward antennal apex. Mandibles symmetrical. Mentum 1.6 times as wide as long.

Thorax. Pronotum wider than long (PW/PL=1.3); anterior angles rounded and slightly prominent; apical half with somewhat parallel sides and basal half gradually narrowing toward the base; with complete internal midlongitudinal ridge and slight longitudinal median sulcus only on basal half. Elytra somewhat longer than wide (EL/ BW=1.1), covering partially or not abdominal tergite 3. Metatarsomeres 5 somewhat shorter and transverse ( Fig. 39 View FIGURES 36 – 47. 36 – 38 ).

Abdomen. Tergite 8 with posterior margin rounded; sternite 8 with posterior margin rounded; tergite 9 with short ventral struts; sternite 9 with posterior margin truncate and with two pairs of long setae; tergite 10 with posterior and lateral margins weakly pigmented, with short fringes and four setae on each side ( Fig. 58 View FIGURES 48 – 58 ). Median lobe of aedeagus with bulbous base in ventral view and curved shape in lateral view ( Figs. 69–70 View FIGURES 59 – 74 ).

Female. Similar to male except for: without very long setae on antennomeres 5, 7, 9 and 11; abdominal sternite 8 with posterior margin somewhat truncate and posterio-laterally slightly emarginated, with short setae ( Fig. 80 View FIGURES 75 – 82 ); tergite 9 without ventral struts; bursa copulatrix as H. pusillus ; ovipositor consisting of a pair of weakly pigmented hemisternites and a pair of more apical coxites, and with many long setae on apex; spermatheca as Fig. 99 View FIGURES 83 – 108 .

Geographical records. Panama (Chiriqui) ( Fig. 114 View FIGURE 114 ).

Biological notes. This species was collected at elevations between 4750 ft (1447 m) and 6900 ft (2013 m), under a slab on a pile of cut chips and bark, in a split sapling, in scraping, in torn fibers of a wounded tree and under bark of a log on the ground.

Remarks. Some specimens may have the metatarsomeres a little less transverse. The longest setae on inner face of antennomeres 5, 7, 9 and 11 are sometimes not so visible.

In the material examined, there are five specimens collected from 4750ft (1447 m), which do not have the metatarsomeres 5 shorter and transverse, and we are unable to segregate these 5 specimens into more than one species. The feature metatarsomere 5 shorter and transverse is only visible on the specimens collected above 5000ft (1524 m).

Etymology. The specific name refers to the shape of the metatarsus and is a compound name: Latin adjective brev - (short), the connective vowel i, and the Greek noun latinized to tarsus (foot). It is a noun in apposition.

FMNH

Field Museum of Natural History

Kingdom

Animalia

Phylum

Arthropoda

Class

Insecta

Order

Coleoptera

Family

Staphylinidae

Genus

Hypotelus

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