Dolichestola annulicornis Breuning, 1942

Santos-Silva, Antonio & Androw, Robert A., 2022, New species, new synonymies, a new rank, and new records in Desmiphorini, Saperdini, and Hemilophini (Coleoptera: Cerambycidae: Lamiinae), Insecta Mundi 2022 (938), pp. 1-14 : 2-4

Dolichestola annulicornis Breuning, 1942

( Fig. 1–10 )

Dolichestola annulicornis Breuning 1942: 164 ; 1963: 510 (cat.); 1974: 123; Monné 1994: 52 (cat.); Monné and Giesbert 1994: 217 (checklist); Monné 2005: 392 (cat.); Monné and Hovore 2006: 244 (checklist); Morvan and Roguet 2013: 25 (distr.); Monné 2022: 659 (cat.).

Dolichestola vittipennis Breuning 1948: 26 ; 1963: 510 (cat.); 1974: 124; Monné 1994: 52 (cat.); Monné and Giesbert 1994: 217 (checklist); Monné 2005: 393 (cat.); Monné and Hovore 2006: 244 (checklist); Monné et al. 2010: 248 (distr.); Monné et al. 2016a: 24 (distr.); Monné et al. 2016b: 353 (distr.); Monné 2022: 660 (cat.). New synonym.

Breuning (1942) briefly described D. annulicornis based on a single specimen ( Fig. 9 ) from Brazil (Pernambuco) as follows (translated): “Genae very short, head and pronotum very densely, finely punctate, the lateral margins of the lateral tubercles of the pronotum parallel, scutellum quadrangular, the elytra very dense, slightly finely punctate throughout. Red, with straw-colored pubescence, the pronotum and circum-scutellar area of the elytra more finely pubescent, appearing to be darker; antennae dark brown, second segment and base of third to eighth light orange. 3½ mm.” Later, Breuning (1974) redescribed the species providing the same information but reported that the antennae are twice the body length.

Breuning (1948) described D. vittipennis based on a single specimen ( Fig. 10 ) from Brazil (Rio de Janeiro) as follows (translated): “Close to D. annulicornis Breuning ; it differs from it by the antennae a quarter longer than the body, by the lower lobes of the eyes three times longer than the genae, by the very dense and very fine punctation of the sterna and the sides of the abdominal segments, as well as by pubescence. Red, covered with a straw-yellow pubescence. This pubescence is very fine on the elytra. The pronotum and the circum-scutellar area of the elytra not appearing darker than the other areas. With two narrow white discal longitudinal bands on each elytron (one right next to the other), fading at the beginning of the fifth apical area. Antennae light red, apical two-thirds of fourth segment and apical three-quarters of subsequent segments covered with dark reddish-brown pubescence. Length: 5 mm. Width: 11/ 3 mm.”

Currently, D. annulicornis is known from French Guiana and Brazil (Pernambuco), and D. vittipennis remains known only from Brazil (Rio de Janeiro) (Monné 2022; Tavakilian and Chevillotte 2021).

Comparing a series of specimens identified as D. vittipennis from MZSP ( Fig. 1–6 ), it is possible to see that the differences between the two species pointed out by Breuning (1948; 1974) are just intraspecific variations. The elytral pubescence may or may not form longitudinal bands, which can be observed in specimens collected at the same place and on the same date; the antennal length is slightly variable in males and females, but in males identified as D. vittipennis from southeastern Brazil they do not differ in length from those of the holotype of D. annulicornis (the holotype of the former is without the right antenna and has only the basal segments of the left antenna—it may or may not be a female, which would explain the short antennal length reported in the original description). Additionally, Breuning (1948; 1974) affirmed that D. vittipennis differs from D. annulicornis by having the lower eye lobes three times longer than the genae, but he never provided a comparison of them in the latter, only affirming that the genae are very short. However, although the genal length is slightly variable in the specimens examined by us, the genae are always very short, usually about three times shorter than the lower eye lobe. Furthermore, the punctures on the ventral surface of the thorax and abdomen cannot be described as very fine in specimens from southeastern Brazil ( Fig. 7–8 ). It is important to note that Breuning (1974) separated these species in his key as follows (translated): “Two longitudinal and narrow pubescent bands on each elytron,” leading to D. vittipennis ; “Elytra without these bands,” leading to D. annulicornis . As was reported above, this feature is variable in D. annulicornis .

Therefore, as we could not find a true difference between D. annulicornis and D. vittipennis , and both holotypes share similar proportions between prothorax and elytra, we consider the latter as a junior synonym of the former.

Material examined. BRAZIL, SÃO PAULO (new state record): Barueri, 1 male ( MZSP 49860 ), 21.XI.1951, K. Lenko leg. ( MZSP) ; Amparo, 4 males ( MZSP 49861 ; MZSP 49868 ; MZSP 49870 ; MZSP 49875 ), 1 female ( MZSP 49864 ), no date and collector indicated ( MZSP) ; São Paulo (Saúde), 1 male ( MZSP 49877 ), 6.XII.1914, Melzer leg. ( MZSP) ; 2 females ( MZSP 49869 ; MZSP 49871 ), 5.XII.1915, no collector indicated ( MZSP) ; 1 male ( MZSP 49867 ), 9.I.1916, Melzer leg. ( MZSP) ; 1 male ( MZSP 49874 ), 1.XII.1918, Melzer leg. ( MZSP) ; 1 female ( MZSP 49878 ), 7.XII.1918, Melzer leg. ( MZSP) ; 1 male ( MZSP 49876 ), 21.XII.1918, Melzer leg. ( MZSP) ; 1 female ( MZSP 49863 ), 11.XII.1921, no collector indicated ( MZSP) ; 1 male ( MZSP 49872 ), 1 female ( MZSP 49873 ) 14.I.1923, Melzer leg. ( MZSP) ; 1 female ( MZSP 49862 ), 28.I.1923, Melzer leg. ( MZSP) ; 1 female ( MZSP 49879 ), 25.XII.1923, Melzer leg. ( MZSP); ( Jabaquara ) , 1 male ( MZSP 49866 ), 6.XII.1941, Nick leg. ( MZSP); ( Mata do Governo ) , 1 male ( MZSP 49865 ), 16.XII.1918, no Melzer leg. ( MZSP) .

Figures

Figures 1–8. Dolichestola annulicornis Breuning, 1942. 1–6) Dorsal habitus: 1) Female from Brazil, São Paulo (Amparo); 2) Female from Brazil (São Paulo, São Paulo, Saúde); 3) Female from Brazil (São Paulo, São Paulo, Saúde); 4) Male from Brazil, São Paulo (Amparo); 5) Male from Brazil (São Paulo, São Paulo, Saúde); 6) Male from Brazil (São Paulo, São Paulo, Saúde). 7–8) Female from Brazil, São Paulo (Amparo): 7) Oblique view; 8) Punctation on the metaventrite.

Figures 9–17. Dolichestola spp. 9) Dolichestola annulicornis Breuning, 1942, holotype male, by Jesus Santiago Moure. 10) Dolichestola vittipennis Breuning, 1948, holotype, by Jesus Santiago Moure. 11) Dolichestola densepunctata Breuning, 1942, holotype male, by Jesus Santiago Moure. 12–16) Dolichestola densepunctata, female from Venezuela. 12) Lateral habitus. 13) Dorsal habitus. 14) Punctation on the metaventrite. 15) Ventral habitus. 16) Head, frontal view. 17) Dolichestola densepunctata, male from Brazil (Pará), dorsal habitus.