Veturius

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 : 101

Veturius (Vetur ius) sinuatocollis Kuwert, 1890

( Figs. 1 d, 2d, 3d, 4d, 5)

Third instar. Body: length 40.0 mm, width (prothorax) 8.5 mm; covered with tiny, stout setae; prosternal setae present; presence of other setae in the lateroventral part of the abdominal segments I–IX. Primary setal pattern: 4–5 HPA, 1 PD, 3 PSL, 1 MSD, 2–3 MSL, 1 MTD, 2 MTL, 1 TM, 1 TSM, 1 TL, 1 AV9 ( Table 2 ). Head: without uniform pile of short, golden setae; epicranial suture short; frontal sutures extended to the base of the antennae; width of head capsule 6.0 mm ( Fig. 1 d). Mandibles with micro-asperities and setae in the ventral base ( Fig. 5 ). Maxillary stipes with 16 micro-conical projections ( Fig. 2 d). Legs: pars stridens (mesocoxae) length 1040.56 µm, width 951.52 µm, distance into striate 20.00 µm, 43 striae; mesocoxae and metacoxae with 2 internal setae. Metathoracic legs with some short medial and lateral setae and with tiny stout setae in the posterior areas; anterior margin with 6 teeth, I and III–VI well developed and gradually decreasing in size, II is the smallest tooth ( Fig. 3 d). Abdomen: raster with setae; anal ring with 17–21 setae; anal slit T-shaped ( Fig. 4 d).

Distribution. Species is distributed from northwest Chiapas, Mexico to southern Ecuador ( Boucher 2006). Material examined. COLOMBIA, CHOCO, Quibdó, Tutunendó, Corregimiento Pacorita, 40 m, vii.2011. Reyes-Castillo & Jiménez-Ferbans (3 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.

FIGURE 5. Scanning electronic micrographs of the mandible of Veturius sinuatocollis. (a) Ventral view with micro-asperities and setae (circle) in the base of the mandible. (b) High magnification of encircled area of Fig. 5 a, showing detail of microasperities (white arrow) and setae (black arrow).