Pelecium fistulosus, 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 : 18-20

Pelecium fistulosus sp. nov.

urn:lsid:zoobank.org:act:130FE372-E6E1-45E0-A5EB-DC065904253D

Figs 4A–H , 25

Diagnosis

A large-sized species (16 mm) distinguishable among other congeners by the combination of the following features. Head frontal fovea short, deeply impressed ( Fig. 4A ). Pronotum median line long and deep; posterior impressions deep. Elytra elongate, ovate, each with 7 striae deeply impressed and punctate ( Fig. 4A ). Adults of P. fistulosus sp. nov. and P. punctatostriatum are quite similar, as both have punctate elytral striae, but in the former the pronotum is wider than long and each elytron has 7 deeply impressed striae, while in the latter the pronotum is longer than wide and each elytron has 5 deeply impressed striae.

Etymology

The specific epithet is from the Latin “ fistulosus ”, which means “full of holes”, in reference to the punctate elytral striae.

Type material

Holotype

BRAZIL • ♂; Mato Grosso, Novo Mundo, PE Cristalino ; Nov. 2012; V. Magalhães leg.; “ Pitfall \\ Pelecium fistulosus Orsetti & Lopes-Andrade HOLOTYPUS ” [printed on red paper]; CEMT.

Paratypes

BRAZIL • 4 ♀♀; same collection data as for holotype; 2 ♀♀; May 2013; “// Pelecium fistulosus Orsetti & Lopes-Andrade PARATYPUS ” [printed on yellow paper]; CEMT.

Description

Male (holotype, fully pigmented adult)

MEASUREMENTS (in mm). AL1 1.3, AL2 0.6, EL 9.0, EW 6.4, PL 4.0, PW 5.0, HL 2.2, HW 3.3, TL 16.0, TL/EW 2.5, lp2L 0.8, lp3L 0.9, lp3 W 0.6, mp3L 0.4, mp4L 0.9, mp4 W 0.6.

BODY. Elongate, flat; head, pronotum and elytra shiny black; glabrous. Ventral surface shiny black ( Fig. 4A ).

HEAD. Microreticulate, frontal foveae deeply impressed, short ( Fig. 4B ). Antennae reddish brown, long, reaching anterior portion of elytra; antennomeres 1–3 with few long, sparse yellowish setae at apical portion; antennomere 4 half covered with short yellowish setae; antennomeres 5–11 fully covered with short yellowish setae. Apical labial and maxillary palpomeres with long, sparse yellowish setae; triangular, reddish brown, apicalmost portion lighter.

PRONOTUM. Slightly wider than long, sides arcuate, each with pair of long setae; median line long, deeply impressed, with anterior edge limited by elongated punctation; posterior impressions deep toward pronotal disc.

ELYTRA. Elongate, ovate; each with 7 deeply impressed striae, markedly punctate; in between striae shiny, impunctate.

LEGS. Black; protarsomere 1–4 expanded, ventrally with vestiture of adhesive setae; protibiae expanded at apex, with few long yellowish setae ventrally and surrounding antennal cleaner; mesotibiae slender, slightly expanded at apex, with few long yellowish setae throughout inner margins; metatibiae slender, with few long yellowish setae ventrally on apical half.

ABDOMINAL TERGITE IX ( Fig. 4E ). Oval, slightly asymmetrical, sides converging in long projection at base; anterior inner angle rounded; apex rounded.

AEDEAGUS ( Fig. 4C–D, F–G ). With median lobe ( Fig. 4C–D ) cylindrical, dorsoventrally flattened in medial half, elongate, asymmetrical, slightly broadening apically; ostium long, reaching central area of median lobe; apical lamella short, not evenly narrowed; basal bulb thin; parameres ( Fig. 4F–G ) asymmetrical; left paramere ( Fig. 4F ) longer and thinner than right paramere ( Fig. 4G ).

Female

Similar to males but with mesh of long yellow setae on basal region of tergite V.

GONOCOXITE 1 ( Fig. 4H ). Outer and inner sides arcuate; inner side forming acute projection on posterior margin; anterior margin dull.

GONOCOXITE 2 ( Fig. 4H ). Elongate, basal lobe bearing ensiform setae on each side; ensiform setae long, with half length of gonocoxite 2; slender setae at apex.

Variation

Among all specimens examined, the one in the best condition was chosen as the holotype.

MEASUREMENTS (in mm). Females (n = 4): AL1 1.2–1.0 (1.13± 0.1), AL2 0.4–0.5 (0.5± 0.08), EL 8.9–9.5 (9.15 ± 0.3), EW 6.0–6.7 (6.35 ±0.31), PL 4.5–5.2 (4.88 ± 0.3), PW 4.6–5.4 (5.05± 0.34), HL 2.0–2.2 (2.13 ± 0.1), HW 3.0–3.5 (3.28 ± 0.22), TL 15.4–16.9 (16.15 ± 0.65), TL/EW 2.5–2.6 (2.54 ± 0.02), lp2L 0.8–0.9 (0.83 ± 0.05), lp3L 0.8–1.0 (0.9 ± 0.08), lp3 W 0.3 –0.4 (0.35 ±0.06), mp3L 0.4–0.5 (0.45± 0.06), mp4L 0.8–0.9 (0.83± 0.05), mp4 W 0.4 –0.4 (0.4 ± 0.0).

Remarks

We include P. fistulosus sp. nov. in the P. punctatostriatum species group due to the punctiform frontal impressions of the head, the deep and elongate posterior impression of the pronotum and tarsomere 5 having a row of setae on the ventrolateral margin.

Figures

Fig. 4. Habitus and dissected parts of some new species of Pelecium Kirby, 1817. A–H. Pelecium fistulosus sp. nov., male holotype from Novo Mundo, Mato Grosso, Brazil (A–G) (CEMT) and female paratype from Novo Mundo, Mato Grosso, Brazil (H) (CEMT). A. Dorsal view. B. Detail of head. C–D. Median lobe. E. Tergite IX. F. Left paramere. G. Right paramere. H. Genitalia. – I–P. Pelecium grossii sp. nov., male holotype from Florianópolis, Santa Catarina, Brazil (I–O) (FZBRS) and female paratype from Florianópolis, Santa Catarina, Brazil (P) (FZBRS). I. Dorsal view. J. Detail of head. K–L. Median lobe. M. Tergite IX. N. Left paramere. O. Right paramere. P. Genitalia. Scale bars: A–B, I–J = 1 mm; C–H, K–P = 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.