Odontocroton rufifrons ( Fisher, 1937 )

Clarke, Robin O. S., 2018, Provisional revision of the genus Odontocera Audinet-Serville, 1834 (Coleoptera: Cerambycidae). I: exclusions, new rank, synonymies and the description of two new genera, Insecta Mundi 637, pp. 1-27 : 13

Odontocroton rufifrons ( Fisher, 1937) new rank, n. comb.

( Fig. 21–24 )

Odontocera sanguinolenta var. rufifrons Fisher 1937: 151 ; Monné 2017: 446 (cat.).

Species concept. Based on Fisher’s (1937) original description and a photograph of the holotype ( Fig. 20 ) available on Bezark (2017), which compares well with male and female topotypes ( Fig. 21–24 ) kindly loaned to the author by EMEC.

Comment. Fisher states that his variety very closely resembles Bates’ O. sanguinolenta ; but he may be referring to Bates’ description, rather than having access to one of the syntypes. This because the surface ornamentation, especially the vitreous translucent panels and the stout antennae (as mentioned by Bates), could hardly be more different. Fisher stated that his holotype is a male; but the photograph ( Fig. 22 ) of his holotype is clearly a female.

Measurements (mm). 2 males / 1 female: total length, 13.10–15.85/14.15; length of prothorax, 2.10–2.35/2.30; width of prothorax, 1.85—1.90/1.95; length of elytra, 7.70–8.50/8.60; width at humeri, 2.10–2.40/2.50.

Specimens analyzed. BRAZIL, Santa Catarina, Nova Teutônia , 27°11 ʹ S / 52°23 ʹ W, male, I.1965, ( EMEC 202,874 ) ; same data, female, 31.X.1941, F. Plaumann col. ( EMEC 202,864 ) .

Specimen examined. Same data, male, 31.X.1941, F. Plaumann col. ( EMEC 202,863).

Distribution. Fisher stated that his specimen came from Brazil (SC). The author considers the distribution of this species to be centered on the wet pine forests of southern Brazil, Paraguay and Argentina (ER, MI). It was recorded as O. sanguinolenta by Di Iorio (2005), but looking at his illustration it has clearly got a rufous frons [and cannot be O. sanguinolentus as it has an entirely black head]; and records from east central Brazil and Uruguay require verification.

Figures

Figures 19–24. Species of Odontocroton (Group B (i)). 19) Odontocroton sanguinolentus (Bates, 1873), syntype female. 20–24. Odontocroton rufifrons (Fisher, 1937). 20) Holotype female. 21) Male, dorsal aspect. 22) Male, ventral aspect. 23) Female, dorsal aspect. 24) Female, ventral aspect.