Stethobaroides piliventris Champion, 1908

Prena, Jens, 2025, Neotropical orchid-weevils of the genus Stethobaroides Champion (Coleoptera, Curculionidae, Baridinae), Zootaxa 5723 (2), pp. 227-244 : 235-236

Stethobaroides piliventris Champion

( Fig. 9A )

Stethobaroides piliventris Champion, 1908: 399–400 . Holotype male (NHMUK).

Diagnosis. At 4.3 mm, S. piliventris is one of three relatively large species found on the Pacific side of central México. Diagnostic is the presence of long hairs on the male thoracic and abdominal ventrites ( Fig. 9A ). In S. villus , the vestiture is much more pronounced and covers all ventral parts including the legs ( Fig. 9B ). The third large species in this region, S. elcoranus , has inconspicuous short hairs on the male basal ventrites ( Fig. 8C ). Female S. piliventris and S. villus are not known at present.

Life history. Unknown.

Distribution. The species is known so far only from the holotype collected in San Juan Juquila Mixes during the mid 1850s.

Material examined. MÉXICO. Oaxaca: Juquila, A. Sallé, digital images of holotype ( NHMUK) .

Figures

FIGURE 8. Stethobaroides elcoranus from Finca El Cora, Nayarit, México. A–C, male, L=3.8 mm; D, female, L=3.4 mm.

FIGURE 9. Stethobaroides, dorsal and ventral aspects of males. A, S. piliventris from Santa Catarina Juquila, Oaxaca, México; L=4.3 mm (photos by R.S. Anderson). B, S. villus from Finca El Cora, Nayarit, México; L=4.0 mm; C, S. nudiventris from Finca Toxpam, Veracruz-Llave, México; L=3.0 mm.