Veturius (Publius) crassus (Smith, 1852)

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 : 102-103

Veturius (Publius) crassus (Smith, 1852)

( Figs. 1 f, 2f, 3f, 4f)

Third instar. Body: length 38.0 mm, width (prothorax) 8.0 mm; with tiny, stout setae; prosternal setae absent. Primary setal pattern: 3 HPA, 0 PD, 3PSL, 0 MSD, 2 MSL, 0 MTD, 2 MTL, 0 TM, 1 TSM, 1 TL, 1 AV9 ( Table 2 ). TM setae present only on abdominal segment IX. Head: without uniform pile of short, golden setae; width of head capsule 6.0 mm. Epicranial suture short; frontal sutures extend to base of antennae ( Fig. 1 f). Mandibles without micro-asperities on the ventral base. Maxillary stipes with 20 micro-conical projections ( Fig. 2 f). Legs: pars stridens (mesocoxae) length 636.02 µm, width 569.30 µm, distance into striate 12.72 µm, 42 striae; mesocoxae and metacoxae with 2 internal setae. Metathoracic legs with some very short setae; anterior margin with 6 teeth, I and III–VI well developed, I and III are larger than IV–VI, II is the smallest tooth ( Fig. 3 f). Abdomen: raster with setae; anal ring with 18 setae; anal slit T-shaped ( Fig. 4 f).

Distribution. Endemic species from center of the Colombian Eastern Cordillera ( Boucher 2006). However, the records cited in the Colombian Central Cordillera are considered erroneous because the altitude less than the average for the species, also the climate and forests are different ( Boucher 2006) or the records need confirmation because the collection localities are doubtful (K.S.-N., personal observation).

Material examined. COLOMBIA, CUNDINAMARCA, Albán, Granja del padre Luna, 2200 m, 9.ii.2000. G. Amat (4 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.