Oncideres quercus Skinner, 1905

Heffern, Daniel, Nearns, Eugenio H. & Santos-Silva, Antonio, 2025, Description of two new species and new geographical records from the Neotropical region (Coleoptera, Cerambycidae), Zootaxa 5728 (1), pp. 173-186 : 181-182

Oncideres quercus Skinner, 1905

( Fig. 16 )

Oncideres quercus Skinner, 1905: 291 .

Remarks. Skinner (1905) described O. quercus based on two specimens from the USA ( Arizona). Currently, it is known from the USA ( Arizona) and Mexico ( Nuevo Léon) ( Monné 2024a; Monné & Nearns 2024; Tavakilian & Chevillotte 2025). Tavakilian & Chevillotte (2025) cited Texas ( USA) as a locality mentioned by Schaeffer (1908). In fact, it was H.G. Barber, secretary of the New York Entomological Society, who formally published the information presented by Charles Frederic August Schaeffer at the meeting held on February 4, 1908. However, it is unclear whether Schaeffer actually collected specimens of this species in Texas: “The second paper of the evening was by Mr. Schaeffer who gave “Notes on Some Coleoptera .” He first discussed the various species of the Genus Oncideres and said that the apparent variety of the insects he believed was due to the fact that they emerged late in the season when little collecting was done and that they clung very tightly to the twigs when disturbed so that in beating, unless they fell into the umbrella at the first stroke, they would not be apt to be taken. The first year that he was in Texas he had not captured any specimens of O. pustulatus but had found many branches infested with the larvae under acacia trees, and from these he had obtained a number of the adult insects … Oncideres texanus , however, was apparently rare as only a few infested branches could be found. The following species and their work were exhibited: Oncideres angulata and girdling on hickory, O. pustulata and work of larvae in Acacia fornesiana [ sic, farnesiana], O. texanus and work in Acacia flexicaulis and O. quercus and work in black oak.” We believe there is no clear evidence indicating that the specimens of O. quercus were collected in Texas. Indeed, the first author and many colleagues have collected extensively in the mountains of western Texas in the preceding 40 years and this species has not been encountered.

Material examined. MEXICO, San Luis Potosí ( new state record): Sierra de Alvarez , 2050 m, 1 male, VII.15.1999, G. Nogueira leg. ( DHCO) .

Figures

FIGURES 15–25. Dorsal habitus. 15) Hesychotypa albofasciata Pérez-Flores & Nearns, 2021, female. 16) Oncideres quercus Skinner, 1905, male. 17) Eudesmus posticalis Guérin-Méneville, male. 18) Physopleurus rugosus (Gahan, 1894), female. 19– 20) Tulcus picticornis (Bates, 1865): 19) Male from Honduras; 20) Holotype female. 21) Tulcus lycimnius (Dillon & Dillon, 1945), holotype male. 22) Tulcus lycimnius, figure 10 on plate IV, from Dillon & Dillon (1946). 23) Tulcus picticornis, figure 14 on plate IV, from Dillon & Dillon (1946). 24) Tulcus picticornis figure 7 on plate IX, from Bates (1880). 25) Tulcus picticornis figure 8 on plate IX, from Bates (1880).