Elaphropus (Nototachys) occidentalis , Boyd, Olivia F. & Erwin, Terry L., 2016

Boyd, Olivia F. & Erwin, Terry L., 2016, Taxonomic review of New World Tachyina (Coleoptera, Carabidae): descriptions of new genera, subgenera, and species, with an updated key to the subtribe in the Americas, ZooKeys 626, pp. 87-123: 102-105

publication ID

http://dx.doi.org/10.3897/zookeys.626.10033

publication LSID

lsid:zoobank.org:pub:3DE781B6-D48B-432B-9784-6703EA6B280B

persistent identifier

http://treatment.plazi.org/id/D1442F62-1AD0-45B4-985C-A7E913943CE9

taxon LSID

lsid:zoobank.org:act:D1442F62-1AD0-45B4-985C-A7E913943CE9

treatment provided by

ZooKeys by Pensoft

scientific name

Elaphropus (Nototachys) occidentalis
status

sp. n.

Taxon classification Animalia Coleoptera Carabidae

Elaphropus (Nototachys) occidentalis  sp. n. Figs 2H, 3H, 4H, 5H, 7A

Type material.

Holotype: male ( NMNH) with following label data: "PERU: LORETO / Pithecia 16May90 / 74°45'W 05°28'S / T.L. Erwin Coll. // At light on Launch / in evening after / sunset’. Paratypes: 12 (4 male, 8 female) in AMNH, CAS, CMNH, MZUSP, NMNH, from "PERU: LORETO 1km SW Boca / del Rio Samira Vigilante Post / No. 1 130m 31 Aug 1991 / 04°40.5'S 074°18.9'W // Treading margins of open / grassy marsh, no water / T.L. Erwin & M.G. Pogue / Lot 73" [1♂, NMNH], "Rio Cauaburi / AM, Brasil / 9.XII.1962 / J. Bechyné col." [1♂, MZUSP], "COLOMBIA:Amazonas / Leticia, 15-VI-65 / P. R. Craig / and J. Robb" [1♂, CAS] , "PERU: MADRE DE DIOS / Pakitza, Rio Manu / 6&9Feb90 T.L. Erwin / 70°58'W 12°07'S // Treading and / quaking river edge / fine silt/sand, / sparse vegetation" [1♂, 1♀, NMNH], "PERU: MADRE DE DIOS / Pakitza, Varzea / 18&21Feb90 TL Erwin / 70°58'W 12°07'S // In leaf litter on / upper flood margin / of Cocha Chica / Tr. Pacal /57" [1♀, NMNH], "PERU: MADRE DE DIOS / Pakitza, quebrada / 06Feb90 T.L. Erwin / 70°58'W 12°07'S // Under leaves at / edge of stream / behind lab, silt" [1♀, NMNH], PERU: LORETO, San / Regis, Rio Maranon / 73°57'W 04°32'S / 04May90, dusk // river margin, at / light on Launch / T.L. Erwin Coll." [1♀, NMNH], PERU: Madre de Dios / Rio Tambopata Res. / 30km (air) sw Pto. / Maldonato, 290m / 12°50'S 069°20'W // B.M. 1983-455 / N.E.Stork / 3.x.-15.xi.1983 / riverbank" [1♀, NMNH], "BRASIL:Barra do / Tapirape, Mato Grosso, / I:1-15:1966 / B.Malkin leg." [1♀, CMNH], ARGENTINA,Tucuman: / 15 Km.N.Tucuman, / Rio Sali. / Dec.30,1971 833 / Lee Herman" [1♀, AMNH], handwritten: "Rep Arg / Tucuman / Ciudad 111-59" [1♀, NMNH].

Type locality.

Perú: Loreto, Pithecia, 74°45'W, 05°28'S.

Diagnosis.

Mentum without foveae; elytron smooth, with two pale maculae and 5 discal setae, Ed1-3 closely grouped in basal third (Fig. 2H); pronotum (Fig. 3H) narrowed at base; mesepisternum (Fig. 7A) with two deep pits; apical half of antennae (Fig. 2H) lighter than basal half.

Description.

Size. ABL = 2.0-2.4 mm; SBL = 2.4-2.7 mm; TW = 1.0-1.2 mm.

Form. (Fig. 2H) Convex, shiny, glabrous; pronotum distinctly narrowed at base.

Microsculpture. Absent except for isodiametrically microsculptured labrum.

Color. Glabrous, rufotestaceous to piceous; elytron with two pale maculae.

Head. Mentum without foveae; frons without longitudinal depressions; frontoclypeal suture with very short lateral subfoveate grooves extending posteriad; apical half of antennae abruptly lighter that basal half, nearly white in many specimens.

Prothorax. Pronotum (Fig. 3H) narrowed at base, margins sinuate; posterior angle approximately square; lateral margin of pronotum narrowly explanate, with flange about 2 × wider at midpoint than at base or apex and bordered by lateral groove; lateral groove extending to posterior angle; shallow, transverse basal impressions reduced to a series of several small, shallow punctules; basal two protarsomeres of male dilated, medially dentiform.

Pterothorax. Mesepisternum (Fig. 7A) with two deep, circular pits; elytral interneur 8 (Fig. 4H) very deeply impressed from Eo2-4, completely effaced between Eo4 and Eo5, deeply impressed from Eo5 to apex; dorsal surface glabrous and without microsculpture; elytral margin smooth; elytra apically narrowed after Eo5+6; each elytron with two pale spots; i1 subsulcate, 2-7 only visible as subcuticular dots; elytron with 5 discal setae, Ed1-4 in basal ⅔, Ed5 near tip of ARG (Fig. 2H); humeral setal insertions (Fig. 4H) asymmetrically distributed, with 4th removed from 1-3; elytral ombilicate setae 2, 6, and 8 very long, 2 –3× the length of the next longest ombilicate seta; ARG (Fig. 5H) short, shallow, extending just past Ed5.

Genitalia. Not examined.

Distribution.

Known from Perú, Brazil, and Argentina. Widespread and apparently abundant in-though not restricted to-riparian habitats.

Derivation of specific epithet.

Derived from the Latin occidens (= “west”), in reference to the New World precinctiveness of this species. This subgenus was previously only described from the Old World.

Kingdom

Animalia

Phylum

Arthropoda

Class

Insecta

Order

Coleoptera

Family

Carabidae

Genus

Elaphropus