Pelecium violaceum Brullé, 1838

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 : 42-43

Pelecium violaceum Brullé, 1838

Figs 1 , 12 , 27

Specimens examined

BRAZIL • 1 ♂; Maranhão, Bom Jardim, REBIO Res. Biol. Gurupi ; 5–15 Jun. 2010; J.C. Silva, J.A. Silva, A.A. Santos and T.T.A. Silva leg.; CERPE • 1 ♀; Rio Grande do Sul, Derrubadas, P.E. do Turvo ; 22 Oct. 2004; L. Moura leg.; FZBRS • 1 ♂, 1 ♀; Mato Grosso, Pontes e Lacerda, Min. Yamana ; 5–11 Nov. 2012; R.A.K. Ribeiro; CEMT • 2 ♂♂, 1 ♀; Mato Grosso, Indiavaí, Faz. Alto Jauru , Bacia Jauru ; Feb. 2003; M. Santos-Filho leg.; CEMT • 1 ♂, 1 ♀; Mato Grosso, Araputanga, Faz. Bandeirantes , Bacia , Jauru ; Dec. 2002; M. Santos-Filho leg.; CEMT • 2 ♀♀; Mato Grosso, Curvelândia, Faz. Aparecido , Bacia Cabaçal ; Feb. 2004; M. Santos-Filho; CEMT • 1 ♀; Mato Grosso, P.N. Nascente do Rio Taquari ; Apr. 2000; F. Rodrigues leg.; CERPE • 1 ♂, 1 ♀; Mato Grosso, Caceres, Faz. Baia de Pedra ; Mar. 2009; D.D. Pinheiro leg.; CEMT • 1 ♀; Mato Grosso, Pontes e Lacerda, Mineração Yamana , P. Ernesto; 1–6 Mar. 2013; R.A.K. Ribeiro leg.; CEMT • 1 ♂; Mato Grosso, Poconé ; Jul. 2012; G. Pessoa leg.; CEMT • 1 ♂; Mato Grosso, Curvêlandia, Faz. Calça Vermelha , Bacia Cabaçal ; Feb. 2004; M. Santos-Filho leg.; CEMT .

Notes

Pelecium violaceum has one of the widest geographical distributions of the genus and it can be found in Bolivia, Paraguay, middle Argentina and in the Brazilian states of Rondônia, Mato Grosso, Goiás and São Paulo. Pelecium violaceum was reported from four South American dominions: South Brazilian, Chacoan, Paraná and the South America transition zone. The new records are from the Pampean province, in the Chacoan dominion, and Roraima province in the Boreal Brazilian dominion.

Complementary description

ABDOMINAL TERGITE IX ( Fig. 12E ). Oval, asymmetrical, elongate, sides subparallel converging to anterior portion, forming a rounded inner angle and a short projection at base; posterior portion rounded.

AEDEAGUS ( Fig. 12C–D, F–G ). With median lobe ( Fig. 12C–D ) cylindrical, asymmetrical, sinuous, slightly broadening apically; ostium elongate, reaching middle area of median lobe; posterior margin thin; apical lamella short; apical edges narrow; basal bulb thin; parameres ( Fig. 12F–G ) asymmetrical; left paramere elongate, with posterior angle rounded; right paramere wider, with posterior angle rounded.

GONOCOXITE 1 ( Fig. 12H ). Outer and inner sides arcuate; inner side forming acute projection on posterior margin; anterior margin dull.

GONOCOXITE 2 ( Fig. 12H ). Elongate; basal lobe bearing ensiform setae on each side; ensiform setae long, with half length of gonocoxite 2; slender setae at apex.

MEASUREMENTS (in mm). Males(n = 8):AL1 1.1–1.6(1.36± 0.16),AL2 0.7–1.0 (0.84± 0.09),EL10.3–12.4 (11.3 ±0.74), EW 7.3–9.0 (8.05± 0.56), PL 5.6–6.6 (6.14± 0.35), PW 5.1–6.3 (5.73± 0.35), HL 2.1–3.2 (2.79 ± 0.33), HW 3.2–3.6 (3.46± 0.14), TL 18.5–22.0 (20.23 ± 1.24), TL/EW 2.4–2.7 (2.51± 0.09), lp2L 0.8–1.2 (2.51± 0.09), lp3L 1.1–1.4 (1.21 ± 0.11), lp3 W 0.9 –1.3 (1.06± 0.16), mp3L 0.4–0.6 (0.5 ± 0.08), mp4L 0.9–1.2 (0.99 ± 0.16), mp4 W 0.7 –1.1 (0.99 ± 0.16). Females (n = 9): AL1 1.1–1.4 (1.26± 0.12), AL2 0.6–0.8 (0.71± 0.09), EL 8.3–12.3 (10.79± 1.47), EW 5.8–8.6 (7.59 ±0.95), PL 4.7–6.5 (5.9 ± 0.73), PW 4.4–6.1 (5.47 ± 0.64), HL 2.1–2.9 (2.63 ± 0.32), HW 2.8–3.7 (3.32 ±0.33), TL 15.1– 21.7 (19.32± 2.47), TL/EW 2.4–2.7 (2.55± 0.08), lp2L 0.7–1.2 (1.02 ± 0.16), lp3L 0.8–1.3 (1.04± 0.18), lp3 W 0.6 –0.9 (0.74 ±0.09), mp3L 0.4–0.6 (0.5± 0.09), mp4L 0.7–1.1 (0.94 ±0.15), mp4 W 0.8 –0.4 (0.63 ± 0.12).

Figures

Fig. 1. Dissected parts of Pelecium violaceum Brullé, 1838, male from Indiavaí, Mato Grosso, Centre- West Brazil (A, C, G) and female from Pontes e Lacerda, Mato Grosso, Centre-West Brazil (B, D–F, H–L). A–B. Maxilla. C. Labial palpomeres and glossa. D. Labial palpomeres. E. Mentum. F. Labrum. G. Metendosternite. H. Antenna. I. Protarsomeres. J. Anterior leg. K. Median leg. L. Posterior leg. Scale bars: A–G = 1 mm; H–L = 0.5 mm.

Fig. 12. Pelecium violaceum Brullé, 1838, male from Bom Jardim, Maranhão, Brazil (A–G) (CERPE) and female from Pontes e Lacerda, 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. Scale bars: A–B = 1 mm; C–H = 0.5 mm.

Fig. 27. Map highlighting part of South America with the known occurrences, including new records, of Pelecium laeve Chaudoir, 1854, P. negrei Straneo, 1962, P. purpureum Straneo, 1955, P. striatum Straneo, 1955 and P. violaceum Brullé, 1838.