Orizabus isodonoides Fairmaire, 1878

Warner, William B., 2011, Review of the genus Orizabus Fairmaire in the United States of America (Coleoptera: Scarabaeidae: Dynastinae), Insecta Mundi 2011 (174), pp. 1-42 : 13

publication ID

https://doi.org/ 10.5281/zenodo.5160884

persistent identifier

https://treatment.plazi.org/id/03BA87C3-BC49-FF88-F9E9-FD2494526B1D

treatment provided by

Felipe

scientific name

Orizabus isodonoides Fairmaire
status

 

Orizabus isodonoides Fairmaire

Fig. 7 View Figures 5-7 , 18, 19 View Figures 16-19 , 23, 24 View Figures 20-25

Orizabus isodonoides Fairmaire 1878: 263 ; Horn 1885: 125, Endrödi 1969: 86, 1985: 244,

Morón 1981: 135, Delgado and Deloya 1990: 305, Morón et al. 2003: 7, Delgado 2008:56, Ratcliffe and Cave 2010: 1. Type. Lectotype male (MNHN) here designated; labeled “Toluca [T] // Type [T] // Orizabus isodonoides Fair. [H] // Mexico / Salle coll. [T] // Orizabus / isodonoides / apud Sallé Fairm.[H] // H.W.Bates / Biol. Cent. Amer.[T] // museum Paris / ex coll. / R. Oberthur[T, blue label] // syntype [T, red label] // LECTOTYPE [T] / Orizabus / isodonoides / Fairmaire / des. W. B. Warner[H, red label]”. Fairmaire apparently described this species from a series of specimens based on the measurements he gave (“—Long. 14 à 16 mill.”); however, the lectotype is the only syntype I examined.

Cheiroplatys isodonoides, Bates 1888: 322 , Fall 1905: 272, Saylor 1946: 18.

Orizabus (Aztecalius) isodonoides, Casey 1915: 228 .

Remarks. Saylor’s (1946) record of Orizabus isodonoides Fairmaire from Colorado is suspect, and so is not included in the key above. I have not been able to locate this specimen in the USNM nor in the Saylor material at CASC, and do not believe the species occurs north of Mexico. Because Saylor based the record on a single female, and specifically mentioned “the two large and entire clypeal carinae are distinctive,” it is probable that he misidentified a specimen of O. mcclevei (e.g. compare Fig. 15 View Figures 12-15 and 19 View Figures 16-19 ), or a worn specimen of O. pyriformis . If O. isodonoides does indeed occur in the US, it can be told from other species by its distinct, transverse frontoclypeal carina (instead of tubercle) even in fresh specimens ( Fig. 7 View Figures 5-7 ), uni- or bisinuate dorsal margins of the male protibiae (tibiae with two or three weak lobes), different pronotal shape ( Fig. 18, 19 View Figures 16-19 ), broader, subovate (in apical view) antennal lamellae, and in males (all but the very smallest individuals), a noticeable anteromedial pronotal tubercle that is separate from the anterior marginal bead ( Fig. 7 View Figures 5-7 , 18 View Figures 16-19 ), as well as the paramera ( Fig. 23, 24 View Figures 20-25 ). The anterior marginal bead is not angularly wider at the middle, and in males (and some females) a broad depression is usually evident behind the pronotal tubercle.

Kingdom

Animalia

Phylum

Arthropoda

Class

Insecta

Order

Coleoptera

Family

Dynastidae

Genus

Orizabus

Loc

Orizabus isodonoides Fairmaire

Warner, William B. 2011
2011
Loc

Orizabus (Aztecalius) isodonoides

Casey, T. L. 1915: 228
1915
Loc

Cheiroplatys isodonoides

Saylor, L. W. 1946: 18
Fall, H. C. 1905: 272
1905
Loc

Orizabus isodonoides

Endrodi, S. 1985: 244
Endrodi, S. 1969: 86
Horn, G. H. 1885: 125
Fairmaire, L. 1878: 263
1878
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