Anelaphus steveni, Santos-Silva, 2021

Santos-Silva, Antonio, 2021, Description of four new species of Anelaphus Linsley (Coleoptera, Cerambycidae Cerambycinae, Elaphidiini), correction of the spelling of species-group names and description of the female of Anelaphus pilosus Chemsak and Noguera, Zootaxa 5048 (3), pp. 371-390 : 373-375

Anelaphus steveni sp. nov.

( Figs 1–5 )

Description. Holotype female. Integument mostly black; ligula reddish brown; apex of palpomeres yellowish brown; apex of ventrites 1–4 reddish brown.

Head. Frons finely, sparsely punctate; with white pubescence not obscuring integument, denser close to eyes. Vertex finely, sparsely punctate, except denser, shallower, somewhat rugose-punctate area close to prothorax; with white pubescence not obscuring integument, slightly denser centrally between antennal tubercles, distinctly shorter, sparser centrally close to prothorax. Area behind upper eye lobes smooth close to eye (this area widened toward lower eye lobe), confluently, rugose-punctate on remaining surface; glabrous on smooth area, with sparse white pubescence centrally close to vertex, with very short, sparse yellowish-white pubescence on remaining surface. Area behind lower eye lobes smooth close to eye, transversely striate-punctate on remaining surface; glabrous on smooth area, with very short and sparse yellowish-white setae on striate-punctate area, and somewhat short, bristly white setae on inferior area near eye (this area with a few long, erect white setae interspersed). Genae finely, sparsely punctate, except smooth apex; with white pubescence not obscuring integument, except glabrous smooth area. Wide central area of postclypeus finely, shallowly, somewhat sparsely punctate; with yellowish-white pubescence partially obscuring integument close to frons, sparser close to anteclypeus, and one long, erect, white seta on each side. Sides of postclypeus smooth, glabrous. Labrum subcoplanar with anteclypeus posteriorly, inclined anteriorly; central area of anterior region distinctly concave; with long, erect, sparse yellowish-white setae, absent on center of inclined area, and thick, abundant golden setae on center of anterior margin. Posterior 2/3 of gulamentum, striate-punctate, almost glabrous laterally, smooth, glabrous centrally; anterior third somewhat coarsely, abundantly punctate, especially laterally, with both short and long, erect yellowish-white setae not obscuring integument (setae appearing to be whiter depending on light intensity). Posterior 2/3 of outer side of mandibles coarsely, confluently punctate, with white pubescence not obscuring integument, and long, erect setae of same color interspersed; with tuft of long, erect golden setae close to anterior third; anterior third of mandibles smooth, glabrous. Distance between upper eye lobes 0.37 times distance between outer margins of eyes; in frontal view, distance between lower eye lobes 0.53 times distance between outer margins of eyes. Antennae 1.6 times elytral length, reaching elytral apex at basal quarter of antennomere XI. Scape somewhat finely, abundantly punctate on basal half, finely, sparsely punctate on apical half, except smooth dorsal apex; with short, decumbent yellowish-white setae not obscuring integument, and long, erect setae of same color interspersed, except glabrous smooth area. Pedicel and antennomeres III–IX with abundant yellowish-white pubescence partially obscuring integument (pubescence slightly denser toward apical antennomeres); pedicel and antennomeres III–VII with long, erect yellowish-white setae ventrally; antennomeres III–X with a few erect setae on dorsal apex (seta gradually shorter toward X); antennomeres III–V with long spine at inner apex; antennomere VI with short spine at inner apex. Antennal formula based on length of antennomere III (excluding apical spines): scape = 0.82; pedicel = 0.18; IV = 0.64; V = 0.87; VI = 0.82; VII = 0.87; VIII = 0.79; IX = 0.72; X = 0.61; XI = 0.72.

Thorax. Prothorax about as wide as long; sides slightly rounded close to anterior constriction, followed by large rounded region, then slightly convergent toward posterior quarter, which are slightly divergent. Pronotum with distinct, elongated central gibbosity, from middle to near posterior margin; coarsely, shallowly, partially confluently punctate (appearing to be finer and isolated depending on the viewing angle), except smooth central gibbosity; with transverse, wide, irregular, somewhat dense light yellowish-brown pubescent band from about anterior third to middle (appearing to be yellowish-white depending on light intensity), sparse yellowish-white pubescence on anterior quarter, sparser close to anterior margin, and dense, wide yellowish-white pubescent band on each side of posterior half (setae shorter than on transverse anterior band), and sparse yellowish-white pubescent band on central area of posterior half (setae longer than on sides), except glabrous central gibbosity; with long, erect, sparse yellowish setae interspersed, especially on anterior half. Sides of prothorax with abundant yellowish pubescence partially obscuring integument, except sparse pubescence on anterior quarter. Prosternum with abundant yellowish-white pubescence (appearing to be whiter depending on light intensity) on posterior 2/3, denser laterally; transverse carinate region on anterior third almost glabrous; area between carinate area and anterior margin with short yellowish-white pubescence not obscuring integument; with long, erect whitish setae throughout, more abundant between carinate area and anterior margin. Narrowest area of prosternal process 0.17 times procoxal width. Procoxal cavities open behind. Ventral surface of mesothorax with abundant yellowish-white pubescence (appearing to be whiter depending on light intensity), except sparse pubescence on wide central area of mesoventrite and center of mesoventral process. Mesoventral process vertically elevated anteriorly, longitudinally elevated centrally (anterocentral region slightly projected forward); lateral projections into mesocoxae present; apex strongly notched centrally. Metanepisternum, sides and apex of metaventrite with dense yellowish-white pubescence obscuring integument (appearing to be whiter depending on light intensity); remaining surface of metaventrite with sparse, short, decumbent yellowish-white setae, and long, erect setae of same color interspersed (both absent on center of posterior half). Scutellum with sparse yellowish-white pubescence. Elytra. Coarsely, somewhat abundantly punctate on anterior third, punctures gradually finer toward apex; anterior half with wide, zig-zag, transverse, dense yellowish-white pubescent band (appearing to be whiter depending on light intensity), from epipleural to sutural margin (dorsally M-shaped); posterior third with wide, slightly oblique pubescent band, almost reaching posterior sixth, yellowish-white anteriorly, gradually yellowish-brown toward its apex; remaining surface with somewhat thick and short, erect yellowish-brown seta on each puncture (part of setae distinctly longer); apex truncate, slightly concave centrally, with minute triangular projection at outer apex. Legs. Femora finely, sparsely punctate, with yellowish-white pubescence not obscuring integument (appearing to be whiter depending on light intensity), absent on posterior half of ventral surface of protibiae and posterior third of ventral surface; with long, erect, sparse yellowish-white setae interspersed; sides of metafemoral club with slightly distinct longitudinal carina ( Fig. 5 ). Tibiae with bristly, somewhat abundant yellowish-white setae, and long, erect setae of same color interspersed, except denser yellowish-brown pubescence on posterior third of ventral surface. Metatarsomere I as long as II–III together.

Abdomen. Posterior half of sides of ventrites 1–2 with dense yellowish-white pubescent macula; remaining surface of ventrites 1–2 and ventrites 3–5 with short, decumbent yellowish-white setae, and long, erect setae of same color interspersed. Apex of ventrite 5 rounded.

Dimensions (mm). Total length, 14.60; prothoracic length, 2.70; anterior prothoracic width, 2.10; posterior prothoracic width, 2.50; maximum prothoracic width, 2.90; humeral width, 3.65; elytral length, 8.65.

Type material. Holotype female from MEXICO, Chiapas: Pq. [Parque] Laguna Bélgica , 16 km NW Ocozocoautla, 800 m, 07.VI.1989, H. Howden leg. ( FSCA).

Etymology. Named for Steven W. Lingafelter, a good friend, researcher and writer of numerous taxonomic works.

Remarks. Anelaphus steveni sp. nov. is superficially similar to A. undulatus ( Bates, 1880) , but differs as follows: the pronotum has a wide inverted U-shaped pubescent band; the anterior pubescent band on the elytra is more well-defined and distinctly oblique dorsally toward suture; and the posterior elytral pubescent band is wide, crossing the entire elytral width. In A. undulatus , the pronotum has four small pubescent maculae; the anterior pubescent band on the elytra is irregular and more transverse toward the suture; and the posterior elytral pubescent band is smaller and does not cross the entire elytral width. The new species differs from A. albofasciatus (Linell, 1897) , A. subdepressus (Schaeffer, 1904) , and A. yucatecus Chemsak and Noguera, 2003 by the elytra lacking a transverse central pubescent band (present in the three species).

Figures

FIGURES 1–5. Anelaphus steveni sp. nov., holotype female: 1) Dorsal habitus; 2) Ventral habitus; 3) Lateral habitus; 4) Head, frontal view; 5) Metafemur.