Dolichestola egeri, Martins, Ubirajara R., Santos-Silva, Antonio & Galileo, Maria Helena M., 2015

Martins, Ubirajara R., Santos-Silva, Antonio & Galileo, Maria Helena M., 2015, Fourteen new species, one new genus, and eleven new country or state records for New World Lamiinae (Coleoptera, Cerambycidae), Zootaxa 3980 (1), pp. 81-105 : 86

Dolichestola egeri sp. nov.

( Figs. 9–12 )

Description. Integument dark-brown, almost black in some areas; apex of urosternites reddish-brown; elytra and legs brown; base of antennomeres III–X brownish-orange (basal half at antennomere III, gradually shorter towards antennomere X). Pubescence grayish-white.

Head. Frons finely, abundantly punctate; pubescence moderately abundant, except glabrous along coronal suture. Area between antennal tubercles and eyes with pubescence as on frons (not surpassing posterior edge of eyes). Coronal suture deep, mainly between antennal tubercles and eyes, shallow, slightly marked after eyes. Vertex finely, densely punctate; pubescence very short, barely evident. Area behind eyes finely, densely punctate. Inner margin of eyes with a few long, thick setae; distance between superior ocular lobes equal to 0.4 times length of scape; distance between inferior ocular lobes, in frontal view, equal to 0.8 times length of scape. Antennae as long as 2.3 times elytral length; ventral side of antennomeres III–VII with dark, thick, sparse setae ventrally (sparser from III to VII); antennal formula (ratio) based on antennomere III: scape = 0.93; pedicel = 0.24; IV = 1.38; V = 1.31; VI = 1.27; VII = 1.14; VIII = 1.07; IX = 1.03; X = 0.93; XI = 0.89.

Thorax. Pronotum, in lateral view, distinctly elevated after basal one-fourth; finely, densely punctate throughout; pubescence very short, slightly conspicuous; with some long, thick setae close to anterior margin. Sides of prothorax with fine, moderately short acute tubercle slightly before middle; a few long, thick, dark setae on each side of tubercle. Metasternum coarse, abundantly punctate (punctures slightly larger and sparser towards middle); laterally pubescent. Scutellum shiny, smooth, glabrous, margined with narrow band of pubescence along margins. Elytra coarsely, densely punctate throughout; pubescence short, not conspicuous in dorsal view; surface with, moderately sparse long setae; apex rounded.

Abdomen. Urosternites coarsely, abundantly punctate (gradually finer and sparser from I to V); pubescence short, moderately sparse centrally, more abundant laterally; with a few sparse, long setae. Legs. Ventral side of meso- and metafemora with dense brush of setae; metatarsomere I as long as 0.71 times II–III; metatarsomere V (without claws) as long as 0.78 times I–III together.

Dimensions in mm (male (?)). Total length, 4.30; length of prothorax at center, 0.90; widest width of prothorax (between apices of tubercles), 1.20; anterior width of prothorax, 0.95; posterior width of prothorax, 0.90; humeral width, 1.30; elytral length, 3.00.

Type material. Holotype male (?) from BRAZIL, Rondônia: 62 km SW Ariquemes (near Rancho Grande Farm), 8–20.XI.1994, J. E. Eger col. ( FSCA).

Diagnosis. Dolichestola egeri differs from other Dolichestola species with basal rings on antennomeres as follows: pubescence of dorsal surface of head does not surpass posterior edge of superior ocular lobes; ventral side of body not densely pubescent, and distinctly, abundantly punctate. In D. densepunctata Breuning, 1942 , D. annulicornis, Breuning, 1942 , and D. vittipennis Breuning, 1948 , the pubescence on dorsal surface of head surpasses posterior edge of superior ocular lobes, and the ventral side of body is densely pubescent, not distinctly punctate. From D. nigricornis Breuning, 1942 it differs mainly by the antennomeres having a basal ring (lacking in D. nigricornis ).

Remarks. Breuning (1974) separated D. densepunctata from D. vittipennis and D. annulicornis in the couplet “2” (translation): “2. Pronotum extremely finely punctate…. densepunctata / Pronotum finely punctate……… 3”. However, the study of photos of the holotypes of D. densepunctata and D. annulicornis shows that, there is no difference in the punctures of the pronotum. In the same way, Breuning (1974) separated D. annulicornis from D. vittipennis the same way in couplet “3” (translation): “3. On each elytron two narrow longitudinal bands…. vittipennis / Elytra without those bands… annulicornis ”. Unfortunately, the difference pointed out to separate those species is variable, at least in D. vittipennis as the pubescence may or may not form elytral bands. Thus, we see no benefit in trying to utilize Breunings key for the new species.

The new species differs somewhat from the generic characters used by Breuning (1974) [for example, elytral length, proportion between antennomeres], but its’ general appearance, lateral tubercles of prothorax, antennal length, eyes, etc. agree very well with the species included in this genus and is tentatively placed here.

Etymology. The species is named for Joseph E. Eger Jr. (Dow AgroSciences, Tampa, Florida, USA), collector of the holotype.

Figures

FIGURES 1 – 12. 1 – 4. Bisaltes (Bisaltes) lingafelteri, holotype female: 1. Dorsal habitus; 2. Ventral habitus; 3. Lateral habitus; 4. Head, frontal view. 5 – 8. Trestonia skelleyi, holotype male: 5. Dorsal habitus; 6. Ventral habitus; 7. Lateral habitus; 8. Head, frontal view. 9 – 12. Dolichestola egeri, holotype male (?): 9. Dorsal habitus; 10. Ventral habitus; 11. Lateral habitus; 12. Head, frontal view.