Atrachelus cinereus crassicornis (Burmeister, 1835)

Marsaro Júnior, Alberto Luiz, Gil-Santana, Hélcio Reinaldo & Moura, Luciano de A., 2024, Species of Reduviidae (Hemiptera: Heteroptera) associated with a canola crop (Brassica napus L. var. oleifera; Brassicales: Brassicaceae) in Passo Fundo, Rio Grande do Sul, Brazil, Revista Chilena de Entomología (Rev. Chil. Entomol.) 50 (3), pp. 535-548 : 540

Atrachelus cinereus crassicornis (Burmeister, 1835)

This is a species of small reduviids, with about 7 to 8 mm in length. Their dorsal body surface is mostly brownish with several small pale markings, mainly on the legs. Males are recognized by the enlargement of the third antennal segment (first flagellomere) ( Fig. 3F ). Michel (1993) stated that the species is common in cotton plantations, and it was already recorded in rice crops too ( Souza et al. 2015).

Distribution. It is a species of wide geographical distribution which extends from Southern (Neotropical) part of Mexico to Argentina ( Elkins 1954; Maldonado and Brailovsky 1985).

Figures

Figures 3A-H. A-E. Females. A-B. Dorsal view. Scale: 5.0 mm. A. Apiomerus luctuosus. B-E. Arilus carinatus C. Lateral view. Scale: 2.0 mm. D-E. Specimen preying on an individual of Nezara viridula (Hemiptera: Pentatomidae). F-H. Dorsal view. F. Atrachelus cinereus crassicornis, male. Scale: 2.0 mm. G-H. Females. G. Cosmoclopius annulosus. Scale: 3.0 mm. H. Harpactor tuberculosus. Scale: 5.0 mm. / Figuras 3A-H. A-E. Hembras. A-B. Vista dorsal. Escala: 5,0 mm. A. Apiomerus luctuosus. B-E. Arilus carinatus. C. Vista lateral. Escala: 2,0 mm.D-E. Espécimen depredando un individuo de Nezara viridula (Hemiptera: Pentatomidae).F-H. Vista dorsal.F. Atrachelus cinereus crassicornis, macho.Escala: 2,0 mm. G-H. Hembras. G. Cosmoclopius annulosus. Escala: 3,0 mm. H. Harpactor tuberculosus. Escala: 5,0 mm.