Pelecium buckupi, Orsetti & Lopes-Andrade, 2024

Orsetti, Artur & Lopes-Andrade, Cristiano, 2024, A contribution to the taxonomy of the genus Pelecium Kirby (Coleoptera: Carabidae: Peleciini), European Journal of Taxonomy 922, pp. 1-61 : 14-16

Pelecium buckupi sp. nov.

urn:lsid:zoobank.org:act:8D044F54-985E-451D-AC66-FCFFDD0349F4

Figs 3A–G , 25

Diagnosis

A medium-sized species (12 mm) distinguishable among other congeners by the combination of the following features. Body elongate ( Fig. 3A ). Head with frontal fovea ( Fig. 3B ) short and shallow. Pronotum longer than wide; median line fine and shallow, deeper in the disc; posterior impressions punctiform ( Fig. 3A ), surrounded by a shallow excavation.Adults of P. buckupi sp. nov. and P. bolivianum are quite similar, but in the former the elytra are elongate, subparallel-sided, and the pronotal sides are slightly arcuate, almost parallel, while in the latter the elytra are ovate, with sides markedly convex, and the pronotum is anteriorly very convex, with lateral margins arcuate and subsinuate anterior to posterolateral angles.

Etymology

The specific epithet ‘ buckupi ’ is an eponym in honor of the Brazilian researcher Ludwig Buckup (1932– 2021), one of the founders of Fundação Zoobotânica do Rio Grande do Sul (FZBRS).

Type material

Holotype

BRAZIL • ♂; Goiás, Minaçu, Serra da Mesa ; 9–20 Dec. 1996; “\\ Col. MCN 159949 \\ Pelecium buckupi Orsetti & Lopes-Andrade HOLOTYPUS ” [printed on red paper]; FZBRS.

Description

Male (holotype, fully pigmented adult)

MEASUREMENTS (in mm). AL1 0.8, AL2 0.4, EL 6.2, EW 0.4, PL 3.7, PW 3.3, HL 1.6, HW 2.3, TL 11.5, TL/EW 2.9, lp2L 0.7, lp3L 0.7, lp3 W 0.5, mp3L 0.2, mp4L 0.7, mp4 W 0.4.

BODY. Elongate, flat; discs of head, pronotum and elytra metallic dark green, with purple reflections alongside in dorsal view; glabrous ( Fig. 3A ). Ventral surface shiny black.

HEAD. Microreticulate, with a pair of frontal foveae, each formed by shallow excavation reaching anterior plane of eyes ( Fig. 3B ). Antennae reddish brown, short, reaching middle of pronotum; antennomeres 1–3 with few long, sparse yellowish setae at apical portion; antennomere 4 with apical half covered with both short and long yellowish setae; antennomeres 5–11 fully covered with both short and long yellowish setae. Apical labial and maxillary palpomeres with long, sparse yellowish setae; triangular, reddish brown, apicalmost portion lighter.

PRONOTUM. Longer than wide; sides arcuate, each with pair of long setae; posterior fourth subparallel; posterolateral angles obtuse; median line narrow, shallow, deeper on disc; posterior impressions punctiform; anterior extension shallow toward pronotal disc ( Fig. 3A ).

ELYTRA. Elongate, sides subparallel; fifth stria deeply impressed; striae 3–5 short, not reaching elytral apex; stria 6 shallow; in between striae shiny, impunctate.

LEGS. Dark reddish brown; protarsomeres 1–4 expanded, ventrally with vestiture of adhesive setae; protibiae expanded at apex, with few long yellowish setae ventrally and around antennal cleaner; mesotibiae slender, with few long yellowish setae laterally throughout their lengths; metatibiae slender, with few long yellowish setae ventrally on apical half.

ABDOMINAL TERGITE IX ( Fig. 3E ). Oval, asymmetrical; anterior portion angulate; inner anterior angle rounded; posterior portion rounded, with inconspicuous sinuous line at apex.

AEDEAGUS ( Fig. 3C–D, F–G ). With median lobe ( Fig. 3C–D ) short, cylindrical, sinuous at apical third, asymmetrical, bent over toward base, slightly broadening apically in apical lamella; ostium short; apical lamella edges narrow, evenly narrowed; basal bulb thin; parameres ( Fig. 3F–G ) asymmetrical, left paramere ( Fig. 3F ) securiform, narrow; right paramere square with round angles ( Fig. 3G ).

Female

Unknown.

Remarks

We include P. buckupi sp. nov. in the P. punctatostriatum species group based on the following features: long frontal cephalic impression, each elytron with five elytral striae deeply impressed and fifth tarsomere with row of setae on each ventrolateral margin ( Straneo & Ball 1989). It is necessary to expand the group limits to include species with green reflections on the dorsal surface in order to include P. buckupi in the P. punctatostriatum group.

Figures

Fig. 3. Habitus and dissected parts of some new species of Pelecium Kirby, 1817. A–G. Pelecium buckupi sp. nov., male holotype from Serra da Mesa, Goias, Brazil (FZBRS). A. Dorsal view. B. Detail of head. C–D. Median lobe. E. Tergite IX. F. Left paramere. G. Right paramere. – H–N. Pelecium chrissquirei sp. nov., male holotype from Alto Caparaó, Minas Gerais, Brazil (CELC). H. Dorsal view. I. Detail of head. J–K. Median lobe. L. Tergite IX. M. Left paramere. N. Right paramere. Scale bars: A–B, H–I = 1 mm; C–G, J–N = 0.5 mm.

Fig. 25. Map of Brazil highlighting the Southeast and South Region and part of the Central-West Region, showing the type localities of Pelecium balli sp. nov., P. belloi sp. nov., P. buckupi sp. nov., P. chrissquirei sp. nov., P. fistulosus sp. nov., P. grossii sp. nov., P. straneoi sp. nov., P. zaguryi sp. nov. and P. zophos sp. nov.