Pelecium grossii, 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 : 21-22

Pelecium grossii sp. nov.

urn:lsid:zoobank.org:act:30469A6E-D796-4291-8D99-42B9D75EF2B0

Figs 4I–P , 25

Diagnosis

A medium-sized species (15 mm) distinguishable among other congeners by the combination of the following features. Head frontal fovea extended, reaching plane of eyes ( Fig. 4J ). Pronotum median line long and deep; posterior impressions deep. Elytra elongate, ovate, each with 8 deeply impressed striae ( Fig. 4I ). Adults of P. grossii sp. nov. and P. violaceum are quite similar, as both have 8 deeply impressed striae in each elytron, but in the former the eyes are small and the dorsal surface has no bright colour, while in the latter the eyes are large and the dorsal surface is violaceus bright at least on the sides.

Etymology

The specific epithet ‘ grossii ’ is an eponym in honor of the Brazilian coleopterist Paschoal Coelho Grossi, who lent us Carabidae beetles important for the present work and other taxonomic and morphological studies in progress.

Type material

Holotype

BRAZIL • ♂; Paraná, Cap. Leonidas Marques; 25 Mar. 1993; A.B. Bonaldo leg.; “// Pelecium grossii Orsetti & Lopes-Andrade HOLOTYPUS ” [printed on red paper]; FZBRS.

Paratypes

BRAZIL • 1 ♀; same collection data as for holotype; “// Pelecium grossii Orsetti & Lopes-Andrade PARATYPUS ” [printed on yellow paper]; FZBRS • 1 ♂; Santa Catarina, Florianópolis, UCAD; 3–10 Nov. 2003; C. Espirito Santo leg.; pitfall; “// Pelecium grossii Orsetti & Lopes-Andrade PARATYPUS ” [printed on yellow paper]; CERPE • 1 ♀, Santa Catarina, Urubici, R.I.P.N. Leão da Montanha ; 6 Nov. 2015; P.G. da Silva leg.; “\\ Coleção A. M. BELLO \\ Pelecium grossii Orsetti & Lopes-Andrade PARATYPUS ” [printed on yellow paper]; CAMB • 1 ♀; Santa Catarina, Florianópolis, UCAD; 26 Jun.– 5 Jul. 2004; C. Espirito Santo leg.; pitfall; “// Pelecium grossii Orsetti & Lopes-Andrade PARATYPUS ” [printed on yellow paper]; CERPE .

Description

Male (holotype, fully pigmented adult)

MEASUREMENTS (in mm). AL1 1.0, AL2 0.5, EL 7.9, EW 5.2, PL 4.3, PW 3.9, HL 2.1, HW 2.4, TL 14.3, TL/EW 2.8, lp2L 0.9, lp3L 1.0, lp3 W 0.8, 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. 4I ).

HEAD. Microreticulate; frontal foveae deeply impressed, with a shallow excavation reaching anterior plane of eyes ( Fig. 4J ). 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 short yellowish setae. Apical labial and maxillary palpomeres with long, sparse yellowish setae; triangular, reddish brown, with apicalmost portion lighter.

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

ELYTRA. Elongate, ovate, each with 8 deeply impressed striae; 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 surrounding antennal cleaner; mesotibiae slender, with few long yellowish setae throughout inner margin, slightly expanded at apex; metatibiae slender, with few long yellowish setae ventrally on apical half.

ABDOMINAL TERGITE IX ( Fig. 4M ). Elongate, triangular, asymmetrical, with round basal projection; inner anterior angle sharp; apex rounded.

AEDEAGUS ( Fig. 4K–L, N–O ). With median lobe ( Fig. 4K–L ) cylindrical, slender, asymmetrical, sinuous; ostium elongate, reaching middle area of median lobe; apical lamella short, apical edges sharp; basal bulb thin; parameres ( Fig. 4N–O ) asymmetrical; left paramere (Fig. N) elongate, posterior angle rounded; right paramere (Fig. O) larger than left paramere, with posterior angle rounded.

Female

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

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

GONOCOXITE 2 ( Fig. 4P ). Elongate, basal lobe bearing ensiform setae on each side; ensiform setae short, with fourth to fifth the 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 1.0–1.1 (1.05± 0.14), AL2 0.5–0.7 (0.6± 0.14), EL 7.9–8.7 (8.3± 0.57), EW 5.3–5.9 (5.55 ±0.49), PL 4.3–4.9 (4.6 ± 0.42), PW 3.9–4.6 (4.25± 0.49), HL 2.1–2.2 (2.15 ± 0.07), HW 2.4–3.1 (2.75± 0.49), TL 14.3–15.8 (15.05 ± 1.06), TL/EW 2.8–2.7 (2.71± 0.05), lp2L 0.9–1.0 (0.95± 0.07), lp3L 1.0–1.1 (1.05± 0.07), lp3 W 0.8 –0.9 (0.85 ±0.07), mp3L 0.4–0.4 (0.4 ± 0.0), mp4L 0.9–1.1 (1.0 ± 0.14), mp4 W 0.6 –0.8 (0.7± 0.14). Females (n = 3): AL1 1.0–1.6 (1.2 ± 0.35), AL2 0.6–0.8 (0.67 ± 0.12), EL 8.13–11.0 (9.23 ±1.53), EW 5.3–7.0 (6.0 ±0.89), PL 4.0–5.8 (4.7 ±0.96), PW 3.8–5.3 (4.3± 0.87), HL 1.9–2.8 (2.27 ±0.47), HW 2.5–3.7 (3.0 ±0.62), TL 14.2–19.6 (16.2± 2.96), TL/ EW 2.7–2.8 (2.69 ± 0.1), lp2L 0.8–0.9 (0.83 ± 0.06), lp3L 0.9–1.1 (1.0 ± 0.1), lp3 W 0.5 –0.6 (0.57± 0.06), mp3L 0.4–0.4 (0.4 ± 0.0), mp4L 0.8–1.2 (0.93 ± 0.23), mp4 W 0.4 –0.6 (0.5 ±0.1).

Remarks

We include P. grossii sp. nov. in the P. violaceum species group due to the elongate and narrow frontal impressions of the head, pronotal impressions deep and each elytron with eight deeply impressed striae.

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.