Glyptoscapus bivittatus Gounelle, 1909

Nascimento, Francisco Eriberto de Lima & Santos-Silva, Antonio, 2018, New species and synonymies in Hexoplonini Martins, 2006 (Coleoptera, Cerambycidae), with notes and new records on Cerambycinae Latreille, 1802, Papéis Avulsos de Zoologia (Pap. Avulsos Zool., S. Paulo) 58, pp. 1-8 : 2-3

Glyptoscapus bivittatus Gounelle, 1909 ( Figs. 5-7 )

Glyptoscapus bivittatus Gounelle, 1909: 660 ; Monné (2018): 439; Tavakilian & Chevillotte (2017).

Remarks: Gounelle (1909) described Glyptoscapus bivittatus based on a single specimen from Brazil (Minas Gerais, Serra do CaraÇa). According to him (translated): “The yellow lateral band that adorns each elytron begins at the humerus and extends to the posterior third; its inner edge describes parallel to the suture a very long arc”. According to Martins (1967), who examined the holotype and two specimens also from Serra do CaraÇa, the yellow macula on the elytra has a somewhat variable length, since in one of the specimens examined by him it reaches only the middle of the elytra. Martins (2006) reported (translated):“So far, Glyptoscapus bivittatus is only recorded from two mountain ranges (Serra do CaraÇa and Serra do Cipó), members of the Serra do EspinhaÇo in Minas Gerais, from Ouro Preto in Minas to Juazeiro in Bahia ”. However, we do not know who recorded Serra do Cipó, because the only specimens previously recorded were from Serra do CaraÇa, and the specimen recorded in Martins (2006) is from Santa Barbara,a city very near to Serra do CaraÇa and, in a straight line, about 80 km from Serra do Cipó.

Despite the comments by Gounelle (1909) and Martins (1967, 2006) regarding the shape of the elytral macula, actually, it can be considerably different, as it is possible to see at Bezark (2018). In this specimen the distal area of the macula is projected toward middle of the elytra as a transverse band. The single specimen belonging to MZSP collection ( Fig. 5 ) agrees very well with one of the specimens examined by Martins (1967), because the macula reaches only the middle of the elytra. There is no doubt that these two specimens ( Fig. 5 , and that figured in Bezark 2018) belong to the same species. Notwithstanding, these two specimens have the basal half of the elytra mostly dark brown, and the distal half reddish-brown. Neither Gounelle (1909) nor Martins (1967, 2006) commented on elytral coloration.

As both, G. bivittatus and G. flaveolus , have the elytral apex not whitish (see dilemma 1 of the key) and because we know that the head color is very variable in G. cicatricosus , a feature used to distinguish G. flaveolus from its congeneric (this variation may or may not occur in these species), we do not know which are the true differences between those two species, because we did not examine specimens of G. flaveolus . According to Bates (1870) on the distal area of the elytra in G. flaveolus : “apex sometimes becoming dark”. Martins (1967), who examined the two syntypes of G. flaveolus , reported (translated): “The head of the holotype [sic] is dark brown, and there is a more or less brownish area behind the posterior elytral macula, with indefinite limits. In the paratype, which is lighter, the head still shows some darkened areas. I saw a specimen with the head and posterior area of the elytra black”.

For the time being, we consider the darkened area on the elytral apex in G. flaveolus (darker than on basal area) as a distinguishing feature to separate G. flaveolus from G.bivittatus since,apparently, in the latter, the apical area of the elytra is slightly lighter than on basal area.

Material examined: BRAZIL, Minas Gerais: EstaÇÃo Ambiental de Pati-CEMIG, 1 male, 07.XII.1986, A.B. & A. Machado col. ( MZSP).

Figures

Figures1-7.(1-4)Glyptoscapusletiziaesp.nov.,holotypefemale:(1)Dorsal habitus;(2)Ventralhabitus;(3)Lateralhabitus;(4)Head,frontalview.(5-7)Glyptoscapus bivittatus: (5) Dorsal habitus;(6) Dorsal habitus,anterodorsal view;(7) Meso- and metafemora.