Pelecium straneoi, 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 : 22-25

Pelecium straneoi sp. nov.

urn:lsid:zoobank.org:act:EF1F8585-1612-429A-8267-D24419480913

Figs 5A–H , 25

Diagnosis

A medium-sized species (10 mm) distinguishable among other congeners by the combination of the following features. Head frontal fovea punctiform ( Fig. 5B ). Pronotum lateral margins rounded, sinuous right before posterolateral angles; median line fine and shallow; posterior impressions inconspicuous. Each elytron with striae 1–6 deeply impressed. Adults of P. straneoi sp. nov. and P. paulae are quite similar, but the former has the posterior impressions of the pronotum less distinct.

Etymology

The specific epithet ‘ straneoi ’ is an eponym in honor of the Italian coleopterist Stefano Ludovico Straneo (1902–1997), who was an expert in ground beetles ( Carabidae ) and made great contributions to the taxonomy of the genus Pelecium .

Type material

Holotype

BRAZIL • ♂; São Paulo, São Luís do Paraitinga, Pq. Est. Serra do Mar , Núcleo Sta. Virgínia; Jan. 2005; M. Uehara leg.; “\\ Coleção A.M. BELLO \\ Pelecium straneoi Orsetti & Lopes-Andrade HOLOTYPUS ” [printed on red paper]; CAMB.

Paratypes

BRAZIL • 1 ♂, 2 ♀♀; same collection data as for holotype; 1 May 2005; “\\ Coleção A.M. BELLO \\ Pelecium straneoi Orsetti & Lopes-Andrade PARATYPUS ” [printed on yellow paper]; CAMB • 1 ♀; São Paulo, Campos do Jordão, Horto ; Feb. 1990; A. Bello leg.; “\\ Coleção A.M. BELLO \\ Pelecium straneoi Orsetti & Lopes-Andrade PARATYPUS ” [printed on yellow paper]; CAMB .

Description

Male (holotype, fully pigmented adult)

MEASUREMENTS (in mm). AL1 0.7, AL2 0.4, EL 5.9, EW 4.0, PL 3.1, PW 3.0, HL 1.4, HW 2.0, TL 10.4, TL/EW 2.6, lp2L 0.5, lp3L 0.6, lp3 W 0.3, mp3L 0.3, mp4L 0.6, mp4 W 0.3.

BODY. Ovate, flat; disc of head, pronotum and elytra shiny black in dorsal view; glabrous ( Fig. 5A ). Ventral surface shiny black.

HEAD. Microreticulate, longer than wide; frontal foveae punctiform, with no excavations ( Fig. 5B ). Antennae reddish brown, long, reaching anterior portion of elytra; antennomeres 1–3 with few long, sparse yellowish setae at apical portion; antennomeres 4–11 fully covered with both short and long yellowish setae. Apical labial and maxillary palpomeres with long, sparse yellowish setae; ovate with apex obliquely truncated, reddish brown, with apicalmost portion lighter.

PRONOTUM. With pair of long setae on each side; lateral margins rounded, sinuous right before posterolateral angles; anterolateral angles rounded; posterior angles nearly sinuate; median line narrow, shallow, deeper on disc; posterior impressions inconspicuous.

ELYTRA. Ovate; each with six deeply impressed striae; in between striae shiny, impunctate.

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

ABDOMINAL TERGITE IX ( Fig. 5E ). Subelongate, asymmetrical; sides subparallel, right side more curved than left side, posterior third rounded; anterior portion converging in rounded projection; inner anterior angle rounded.

AEDEAGUS ( Fig. 5C–D, F–G ). With median lobe ( Fig. 5C–D ) cylindrical, short, asymmetrical, apical portion expanded; ostium short, confined to apical third; apical lamella elongate, not evenly narrowed, apical edges sharp; basal bulb thin; parameres ( Fig. 5F–G ) asymmetrical, left paramere ( Fig. 5F ) securiform, longer and thinner than right paramere ( Fig. 5G ).

Female

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

GONOCOXITE 1 ( Fig. 5H ). Outer and inner sides arcuate; inner side forming acute projection on posterior margin; anterior margin dull.

GONOCOXITE 2 ( Fig. 5H ). Subtriangular, 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). Males (n = 2): AL1 0.7–0.7 (0.7 ± 0.0), AL2 0.4–0.3 (0.35 ± 0.07), EL 5.0–5.9 (5.45 ± 0.64), EW 3.5–4.0 (3.75± 0.35), PL 2.8–3.1 (2.95 ± 0.21), PW 2.6–3.0 (2.8 ± 0.28), HL 1.3–1.4 (1.35± 0.07), HW 1.8–2.0 (1.9± 0.14), TL 9.1–10.4 (9.75± 0.92), TL/EW 2.6–2.6 (2.6 ±0.0), lp2L 0.5– 0.5 (0.5 ±0.0), lp3L 0.6–0.6 (0.6 ±0.0), lp3 W 0.2 –0.3 (0.25± 0.07), mp3L 0.2–0.3 (0.25± 0.07), mp4L 0.5–0.6 (0.55± 0.07), mp4 W 0.3 –0.3 (0.3 ± 0.0). Females (n = 3): AL1 0.7–0.9 (0.8 ± 0.10), AL2 0.2–0.4 (0.33 ± 0.12), EL 5.5–7.0 (6.23 ± 0.75), EW 3.7–4.7 (4.23 ± 0.5), PL 3.0–3.6 (3.33 ± 0.31), PW 3.0–3.5 (3.27 ± 0.25), HL 1.4–1.7 (1.6± 0.17), HW 2.0–2.4 (2.23 ± 0.21), TL 9.9–12.3 (11.17 ±1.21), TL/EW 2.6–2.7 (2.64 ± 0.03), lp2L 0.5–0.6 (0.57 ±0.06), lp3L 0.6–0.7 (0.63± 0.06), lp3 W 0.2 –0.2 (0.2 ± 0.0), mp3L 0.3–0.3 (0.3 ± 0.0), mp4L 0.5–0.7 (0.6 ± 0.1), mp4 W 0.2 –0.3 (0.2 ± 0.3).

Remarks

We include P. straneoi sp. nov. in the P. rotundipenne species group due to the following features: head frontal impressions punctiform; each elytron with at least five deeply impressed striae and the fifth tarsomeres without ventrolateral setae.

Figures

Fig. 5.Habitus and dissected parts of some new species ofPelecium Kirby, 1817. A–H. Pelecium straneoi sp. nov., male holotype from São Luís do Piratinga, São Paulo, Brazil (A–G) (CAMB) and female paratype from São Luís do Piratinga, São Paulo, Brazil (H) (CAMB). A. Dorsal view. B. Detail of head. C–D. Median lobe. E. Tergite IX. F. Left paramere. G. Right paramere. H. Genitalia. – I–J. Pelecium zaguryi sp. nov., male holotype from Cotriguaçu, Mato Grosso, Brazil (CEMT). I. Dorsal view. J. Detail of head. Scale bars: A–B, I–J = 1 mm; C–H = 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.