Allotigrinestola nuevoleonis, Heffern & Nascimento & Santos-Silva, 2018

Heffern, Daniel, Nascimento, Francisco E. De L. & Santos-Silva, Antonio, 2018, Descriptions, redescription, notes, and new ranks in American Cerambycidae (Coleoptera), Zootaxa 4531 (1), pp. 59-80 : 61-62

Allotigrinestola nuevoleonis sp. nov.

( Figs. 5–8 )

Description. Female. Integument mostly black; mouthparts partially reddish-brown; anterior half of labrum reddish-brown; posterior half of abdominal ventrites IV–V brownish. Pubescence mostly yellowish-gray (grayer depending on intensity and angle of light source).

Head. Frons densely, very finely punctate, interspersed with slightly coarser punctures; pubescence dense, partially obscuring integument, interspersed with long, erect, sparse dark setae; frontoclypeal sulcus distinct only sideward. Vertex densely micropunctate, interspersed with fine, sparse punctures (part of them somewhat coarser between upper eye lobes); pubescence partially obscuring integument, except glabrous area along median groove, and nearly glabrous area on each side between upper eye lobes and prothoracic margin. Area behind eyes with pubescence not obscuring integument behind upper eye lobe, denser behind lower eye lobe, except glabrous area close to prothorax. Antennal tubercles densely micropunctate; pubescence as on frons, interspersed with a few long erect dark setae. Genae densely, very finely punctate interspersed with sparse, slightly coarser punctures, except smooth apex; pubescence partially obscuring integument close to eye, gradually sparser toward glabrous apex; with a few long, erect dark setae. Postclypeus with pubescence as on frons on wide central area, interspersed with long, erect dark setae (longer and slightly more abundant than on frons), glabrous laterally. Labrum with yellowish-gray pubescence on posterior half, not obscuring integument, interspersed with long, erect, moderately abundant yellowish-brown setae; anterior half with yellowish-brown pubescence not obscuring integument. Gulamentum transversely striate, glabrous posteriorly, with sparse, decumbent, short and long yellowish setae anteriorly. Distance between upper eye lobes 0.37 times length of scape (2.2 times width of one lobe); in frontal view, distance between lower eye lobes 0.88 times length of scape. Antennae 1.15 times elytral length, reaching about posterior sixth of elytra. Scape dorsally with brownish pubescence interspersed with yellowish-gray pubescence on some areas; ventrally with yellowish-gray pubescence interspersed with long, erect dark setae. Pedicel and antennomeres with yellowish-gray pubescence obscuring integument anteriorly, brownish, slightly conspicuous posteriorly (the latter gradually smaller toward XI; smaller ventrally than dorsally on III); antennomeres III–VII with long, erect dark setae ventrally, gradually shorter, sparser toward VII. Antennal formula (ratio) based on length of antennomere III: scape = 1.08; pedicel = 0.23; IV = 1.00; V = 0.80; VI = 0.75; VII = 0.71; VIII = 0.63; IX = 0.60; X = 0.53; XI = 0.53.

Thorax. Prothorax 1.32 times wider than long (including lateral tubercles); lateral tubercles conical, with spiniform apex, curved upward. Pronotum with two slightly distinct gibbosities on each side before middle; coarsely, abundantly punctate (sparser on gibbosities); yellowish-gray pubescence nearly obscuring integument except on large Y-shaped central area with very sparse brownish pubescence; with long, suberect, sparse dark setae except on Y-shaped area. Sides of prothorax with sculpturing and pubescence as on sides of pronotum, sparser near posterior margin. Prosternum with pubescence partially obscuring integument laterally toward procoxal cavities, slightly sparser on remaining surface, especially toward anterior margin. Procoxal cavities distinctly closed posteriorly. Ventral side of mesothorax with pubescence not obscuring integument on center of mesoventrite and on mesepimeron, nearly obscuring on sides of mesoventrite and on mesanepisternum. Pubescence on metanepisternum and metaventrite nearly obscuring integument, except on glabrous central triangular area of metaventrite (pubescent along metathoracic discrimen); metaventrite densely micropunctate, interspersed with fine, sparse punctures laterally. Scutellum with pubescence not obscuring integument dorsally, margins fringed with yellowish-brown pubescence. Elytra. Coarsely, moderately abundantly punctate on anterior third, slightly sparser toward apex; pubescence nearly obscuring integument; with short, suberect, sparse dark setae throughout; apex nearly truncate. Legs. Pubescence nearly obscuring integument. Ventral side of posterior half of protibiae, and dorsal side of posterior half of meso- and metatibiae with yellowish-brown pubescence (golden depending on intensity and angle of light source, especially on mesotibiae).

Abdomen. Ventrites densely, very finely punctate, especially toward V, interspersed with slightly coarser, sparse punctures; pubescence partially obscuring integument, interspersed with a few long, erect dark setae (more abundant on V); ventrite V with fine, slightly arched sulcus near posterior margin, following curvature of posterior margin.

Dimensions (mm). Total length, 13.60; prothoracic length, 2.30; posterior prothoracic width, 2.50; anterior prothoracic width, 2.50; widest prothoracic width (between apices of lateral tubercles), 3.10; humeral width, 4.30; elytral length, 9.95.

Type material. Holotype female from MEXICO, Nuevo León: 5 km E San Roberto , 1.VII.2010, D. Sundberg col. ( TAMU).

Remarks. Curiously, the male holotype of Allotigrinestola nuevoleonis sp. nov. was collected near the type locality of A. sundbergi Heffern & Santos-Silva, 2017 ( Mexico, Nuevo Leon, 20 km E San Roberto). However, the holotype female of Allotigrinestola nuevoleonis differs from the female paratypes of A. sundbergi as follows: general pubescence yellowish-gray, slightly bristly; scape with brownish pubescence dorsally; antennae reaching posterior sixth of the elytra; pronotum with Y-shaped area with brownish, sparse pubescence; pronotum and elytra coarsely punctate; elytra without area with contrasting pubescence on posterior half. In females of A. sundbergi , the general pubescence is gray, pubescence on scape is entirely gray, antennae reaching posterior third of the elytra, pronotum without Y-shaped area with contrasting pubescence, pronotal and elytral punctures fine and not noticeable, and elytra with area of contrasting pubescence on posterior half.

Although the antennae are longer than pointed out in the original description of the genus (“antennae in female not reaching distal third of elytra”), the general appearance, and lower eye lobes distinctly longer than gena, allow the inclusion of the species in Allotigrinestola Heffern & Santos-Silva, 2017 , and not in Tigrinestola Breuning, 1949 (body slender, and lower eye lobes, at most, as long as gena).

Etymology. Named for the state of Nuevo León in Mexico where the type was collected.

Figures

FIGURES 1–8. 1–4, Estoloides jaliscana, holotype female: 1, Dorsal habitus, 2, Ventral habitus; 3, Lateral habitus; 4, Head, frontal view. 5–8, Allotigrinestola nuevoleonis, holotype female: 5, Dorsal habitus, 6, Ventral habitus; 7, Lateral habitus; 8, Head, frontal view.