Veturius (Ouayana) negroensis Boucher, 2006

Salazar-Niño, Karen & Serrão, José Eduardo, 2015, Description of the immature stages of nine species of Veturius (Coleoptera: Passalidae), Zootaxa 3925 (1), pp. 94-108 : 104

Veturius (Ouayana) negroensis Boucher, 2006

( Figs. 1 i, 2j, 3i, 4i)

Third instar. Body: length 32.0 mm, width (prothorax) 6.0 mm; with tiny, stout setae; prosternal setae absent. Primary setal pattern: 2 HPA, 0 PD, 3 PSL, 0 MSD, 2 MSL, 0 MTD, 1 MTL, 0 TM, 1 TSM, 1 TL, 1 AV9 ( Table 2 ). Head: without uniform pile of short, golden setae; epicranial suture short; frontal sutures extend to the base of the antennae; width of head capsule 4.0 mm ( Fig. 1 i). Mandibles with micro-asperities on the ventral base. Maxillary stipes with 19 micro-conical projections ( Fig. 2 j). Legs: pars stridens (mesocoxae) length 676.23 µm, width 625.65 µm, distance into striate 12.67 µm, 44 striae; mesocoxae and metacoxae with two internal setae. Metathoracic legs with some short lateral setae (side of I tooth); anterior margin with 5 teeth, I and III–V well developed, I and III are about same size and are larger than IV–V, II is the smallest tooth ( Fig. 3 i).

Abdomen: raster without setae; anal ring with 14 setae; anal slit T-shaped ( Fig. 4 i).

Distribution. Known species of the central Amazon Basin ( Brazil: Amazonas and Pará) and the upper Orinoco Basin ( Venezuela: Amazonas) ( Boucher 2006). The locality where was collected the material examined accord with the species distribution. This confirms a new record of Veturius for Colombia.

Material examined. COLOMBIA, GUAINIA, Inirida, Com. La Ceiba, 3°37'58.7''N 67°53'22.1''W, 103 m, 18.iii.1998, Bosque. G. Amat, A. Garbanzo, & C. Martínez (2 specimens).

Figures

FIGURE 1. Light micrographs of the head. (a) Veturius aspina, (b) V. assimilis, (c) V. simillimus, (d) V. sinuatocollis, (e) V. sinuatus, (f) V. crassus, (g) V. impressus, (h) V. oberthuri, (i) V. negroensis. Epicranial suture (ES) and frontal suture (FS) and post-antennal head setae (HPA). Scale 1 mm.

FIGURE 2. Scanning electronic micrographs of maxillae. (a) Veturius aspina, (b) V. assimilis, (c) V. simillimus, (d) V. sinuatocollis, (e) V. sinuatus, (f) V. crassus, (g) V. impressus, (h) high magnification of encircled area of Fig. 2 g of the microconical projections (arrow) on the stipes (i) V. oberthuri, (j) V. negroensis. Scale 200 µm.

FIGURE 3. Scanning electronic micrographs of metathoracic legs. (a) Veturius aspina, (b) V. assimilis, (c) V. simillimus, (d) V. sinuatocollis, (e) V. sinuatus, (f) V. c r a s s u s, (g) V. impressus, (h) V. oberthuri, (i) V. negroensis. I – VI indicate the number of teeth. Scale 100 µm.

FIGURE 4. Light micrograph of the abdominal segment X, showing the anal opening (AP), anal ring setae (AR) and raster (R). (a) Veturius aspina, (b) V. assimilis, (c) V. simillimus, (d) V. sinuatocollis, (e) V. sinuatus, (f) V. c r a s s u s, (g) V. impressus, (h) V. oberthuri, (i) V. negroensis. Scale 1 mm.