Estoloides dthomasi, Santos-Silva & Wappes & Galileo, 2018

Santos-Silva, Antonio, Wappes, James E. & Galileo, Maria Helena M., 2018, Descriptions and synonymies in American Desmiphorini (Coleoptera, Cerambycidae, Lamiinae), Zootaxa 4375 (4), pp. 451-501 : 468-470

Estoloides dthomasi sp. nov.

( Figs 109–114 )

Description. Male. Integument mostly dark brown; ventral and lateral sides of head, mouth parts (except yellowish brown apex of last maxillary and labial palpomeres) and mandibles black; antennae dark reddish brown, darkened toward distal antennomeres; legs mostly dark reddish brown.

Head. Frons moderately finely, abundantly punctate; with testaceous pubescence partially obscuring integument, slightly longer pale yellow pubescence close to lower eye lobes; with long, erect, abundant yellowish brown setae. Vertex with sculpture as on frons, gradually finer, sparser toward prothorax and area behind upper eye lobes; pubescence most pale yellow between antennal tubercles and upper eye lobes, especially close to eyes, testaceous on remaining surface; erect setae as on frons. Area behind upper eye lobes finely, sparsely punctate close to vertex, smooth toward lower eye lobes; with pale yellow pubescence obscuring integument (denser than on vertex). Area behind lower eye lobes tumid, finely, sparsely punctate close to eye, smooth on remaining surface; area close to eye with narrow yellow pubescent band; remaining surface of tumid area with pale yellow pubescence partially obscuring integument; remaining surface glabrous; tumid area with long, erect, moderately sparse translucent setae. Antennal tubercles with sculpture, pubescence and erect setae as on center of frons. Median groove distinct from clypeus to area between upper eye lobes, almost inconspicuous toward prothorax. Genae finely, moderately abundantly punctate, except smooth narrow area close to apex; with pale yellow pubescence nearly obscuring integument, except glabrous smooth area; with long, erect, moderately abundant yellowish setae. Gulamentum smooth, glabrous except transverse band with testaceous pubescence near mentum, with long, erect light yellowish brown setae interspersed. Labrum convex on basal third, inclined on distal 2/3; finely, moderately abundantly punctate close to anteclypeus, coarsely punctate close to inclined area, then finely, abundantly punctate toward smooth apex; with long, translucent, moderately abundant setae directed forward; apex with fringe of dense yellow setae. Distance between upper eye lobes 0.50 times length of scape (2.50 times width of on lobe); in frontal view, distance between lower eye lobes 1.05 times length of scape. Antennae 1.9 times elytral length, reaching elytral apex at base of antennomere VIII. Scape gradually widened toward distal forth, then slightly narrowed toward apex; finely, abundantly punctate; with testaceous pubescence partially obscuring integument, but exposing part of punctures; with long, erect, abundant testaceous setae dorsally, sparser ventrally. Pedicel and antennomere III with pubescence as on scape; with short, suberect, abundant yellowish brown setae ventrally, with long, erect abundant setae ventrally; antennomere IV with pubescence, setae and sculpture as on antennomere III, except distal quarter nearly smooth and without suberect setae dorsally. Antennomeres V–X with testaceous pubescence, denser on basal area; ventrally with long, erect, abundant yellowish brown setae (gradually shorter and sparser toward X). Antennomere XI with testaceous pubescence, denser on basal and distal area; ventrally with short, erect, sparse yellowish brown setae. Antennal formula (ratio) based on length of antennomere III: scape = 0.63; pedicel = 0.14; IV = 1.02; V = 0.63; VI = 0.64; VII = 0.61; VIII = 0.54; IX = 0.48; X = 0.43; XI = 0.43.

Thorax. Prothorax, maximum width 1.4 times wider than long (including lateral tubercles); lateral tubercles large, placed at middle, with apex acute. Pronotum with five gibbosities, one elongate at center on basal half, one slightly elevated, subcircular, placed on each side of basal half, one moderately elongate on each side of distal half, gradually inclined laterally toward side, abruptly inclined inwardly; coarsely, moderately abundantly punctate around gibbosities (punctures more distinct centrally where highlighted by pubescence); with testaceous pubescence obscuring integument, less so on wide longitudinal band on each side of central gibbosity and moderately narrow band on each side of distal half (this latter less conspicuous); with short and long, erect, sparse yellowish setae. Sides of prothorax coarsely, moderately sparsely punctate; with testaceous pubescence nearly obscuring integument, interspersed with long, erect yellowish setae. Prosternum finely, sparsely punctate; with testaceous pubescence nearly obscuring integument, with long, erect yellowish setae interspersed. Prosternal process wide (centrally about as wide as base of profemora), slightly concave, centrally slightly carinate on distal area; with testaceous pubescence nearly obscuring integument; with long, erect, abundant yellowish setae on distal area. Mesoventrite with distinct, oblique carina on each side (continuation of lateral margins of mesoventral process); with testaceous pubescence nearly obscuring integument, except centro-basal area with sparser pubescence. Mesanepisternum finely, sparsely punctate; with testaceous pubescence obscuring integument, but exposing punctures. Mesepimeron and metanepisternum with testaceous pubescence nearly obscuring integument. Mesoventral process longitudinally slightly concave; with testaceous pubescence nearly obscuring integument. Metaventrite moderately coarsely, sparsely punctate; with testaceous pubescence partially obscuring integument, but exposing punctures; with long, erect, moderately sparse yellowish setae. Scutellum with dense yellow pubescence. Elytra. Slightly depressed, rugose-punctate on triangular circum-scutellar area on basal quarter; remaining surface finely, moderately abundantly punctate (punctures finer toward apex); with testaceous pubescence, irregularly denser on some areas, interspersed with dense, irregular yellow pubescence, except on depressed triangular area with sparser, pubescence, gradually grayish toward suture, and narrow band with grayish pubescence along distal 3/4 of suture (less distinct toward apex); with long, erect, moderately abundant yellow setae. Legs. Femora shallowly, sparsely, coarsely punctate; with testaceous pubescence partially obscuring integument, but distinctly exposing integument.

Abdomen. Ventrites shallowly, moderately sparsely, coarsely punctate; with testaceous pubescence partially obscuring integument (pubescence yellower on some areas), with long, erect yellowish setae interspersed. Ventrite V nearly flat; apex truncate, slightly and widely emarginate centrally.

Female. It differs from male by the shorter antennae (1.45 times elytral length, reaching elytral apex at apex of antennomere X), and abdominal ventrite V distinctly convex, with slight, transverse depression close to distal margin.

Dimensions (mm) (holotype male/ paratype females). Total length, 17.32/15.30–17.32; prothoracic length, 3.42/2.97–3.37; basal prothoracic width 3.87/3.42–3.96; distal prothoracic width, 3.37/3.19–3.60; maximum prothoracic width (between apices of lateral tubercles), 4.72/4.14–4.77; humeral width, 5.58/5.04–5.94; elytral length, 12.06/11.02–12.69.

Type material. Holotype male ( FSCA), 2 paratype females ( ACMT, MZSP) from MEXICO, Chiapas: 17 km W Tuxtla Gutiérrez, 21–25.VI.1987, J. E. Wappes col.

Etymology. Named to recognize and thank Donald B. Thomas for his published work on Eleodes Eschscholtz, 1829 (Tenebrionidae) and New World Pentatomidae , willing reviews of many of the author’s papers, hosting the collector of the new species types on several trips to Chiapas and for his friendship of many years.

Remarks. E. dthomasi is similar to E. bellefontainei Touroult, 2012 ( Figs 115–117 ), but differs as follows: general pubescence paler; elytra with grayish pubescent band along suture. In E. bellefontainei the general pubescence is more yellowish brown, and elytra without grayish pubescent band along suture. According to Julien Touroult (personal communication), these differences are constant in the specimens of E. bellefontainei , not only in the holotype and paratypes, but also in other specimens collected after the original description.

Figures

FIGURES 109–117. 109–114, Estoloides dthomasi: 109, dorsal habitus, holotype male; 110, ventral habitus, holotype male; 111, lateral habitus, holotype male; 112, head, frontal view, holotype male; 113, dorsal habitus, paratype female; 114, dorsal habitus, paratype female. 115–117, Estoloides bellefontainei: 115, dorsal habitus, holotype male; 116, head, frontal view, holotype male; 117, dorsal habitus, paratype female.Photographs 115–117 by Julien Touroult.