Coleoxestia hovorei, Santos-Silva & Wappes, 2017

Santos-Silva, Antonio & Wappes, James E., 2017, Six new species and a new country record of Coleoxestia Aurivillius, 1912 (Coleoptera, Cerambycidae, Cerambycinae), Insecta Mundi 2017 (572), pp. 1-19 : 9-11

Coleoxestia hovorei sp. nov.

( Fig. 33–39 )

Description. Holotype male. Integument black; mouthparts reddish brown; antennae gradually light reddish brown toward distal segments; profemora reddish brown except black peduncle and distal quarter of club; meso- and metafemora dark brown on base and ventral side of peduncle, with remaining surface gradually reddish brown toward black quarter; protibiae black on basal 4/5, reddish brown on distal 1/5; meso- and metatibiae black on basal third, gradually reddish brown toward apex; tarsi dark brown with reddish brown areas; apex of abdominal ventrites I–IV with narrow, reddish-brown band.

Head. Frontal plate kite-shaped, well-marked, tumid, finely punctate close to clypeus and laterally close to frontal depression; remaining surface smooth; with minute, sparse setae laterally. Frontal depression well-marked, coarsely, confluently punctate; with minute, sparse setae interspersed with short, erect setae (slightly longer close to eyes). With distinct, narrow carina from frontal plate to between upper eye lobes. Area between upper eye lobes smooth close to eyes, coarsely, shallowly punctate close to carina; with long, erect, sparse setae close to eyes, glabrous on remaining surface. Area between upper eye lobes and prothoracic margin coarsely, abundantly punctate (punctures oblong toward prothorax), except for smooth, narrow central band, not reaching margin of prothorax, glabrous except for long, erect setae close to eyes. Epicranial suture distinct only on frontal plate and base of carina. Area behind upper eye lobes coarsely, abundantly punctate; with long, erect, sparse setae close to eyes, glabrous on remaining surface. Area behind lower eye lobes narrowly tumid close to eye, smooth, glabrous toward upper eye lobe, coarsely punctate toward ventral side, with long, erect, sparse setae in punctate region; area close to tumid region sulcate, glabrous; area between sulcus and prothorax coarsely, abundantly punctate (punctures gradually sparser toward ventral side), glabrous. Genae finely, sparsely punctate ventrally, smooth dorsally; with minute, sparse setae interspersed with long, erect setae ventrally, glabrous dorsally. Submentum opaque, densely minutely punctate, interspersed with coarse, smooth punctures; with short and long, abundant, erect setae. Postclypeus opaque in large central area, shining laterally; finely punctate in opaque region (more dense laterally), smooth in shining region; with minute, sparse setae in opaque region, shiny region glabrous; with one long, erect seta on each side of opaque region. Labrum with anterior margin of coplanar region widely concave; with long, erect setae laterally in coplanar region, glabrous centrally; with fringe of setae on inclined apex. Antennal tubercles distinctly, abruptly elevated near central carina; coarsely, confluently punctate except for minutely punctate region close to apex; with long, erect, sparse setae. Distance between upper eye lobes 0.4 times length of scape; distance between lower eye lobes in frontal view 0.7 times length of scape. Antennae 1.3 times elytral length, reaching distal 1/11 of elytral apex. Scape coarsely punctate in basal half of dorsal and lateral surface, gradually finer toward apex; with short, erect setae dorsally; with long, erect, sparse setae ventrally. Antennomere III with short, sparse setae interspersed with long, erect setae ventrally; apex nodose-flattened. Antennomere IV with apex semi-angulose. Antennomeres V–VII with apex ortho-angulose. Antennomeres VIII–X with apex acute-angulose. Antennomere XI not divided; greatest width 0.16 times its length. Antennal formula (ratio) based on antennomere III: scape = 0.55; pedicel = 0.15; IV = 0.54; V = 0.53; VI = 0.51; VII = 0.52; VIII = 0.50; IX = 0.47; X = 0.44; XI = 0.73.

Thorax. Prothorax as long as wide; lateral tubercles distinct; sides of prothorax between peripheral and semiperipheral sulcus coarsely, abundantly punctate close to pronotum, gradually finer, sparser toward ventral side, with long, erect, sparse setae. Pronotum with peripheral sulcus well-marked throughout (shallower centrally); fusiform plate well-marked, narrowed laterally; surface with five gibbosities (two anterolateral distinctly more elevated); discal area between anterior and posterior constrictions plicate, except on smooth central gibbosity in basal half, interspersed with coarse, sparse punctures between anterior constriction and anterolateral gibbosities, coarsely, abundantly punctate on sides of smooth basal gibbosity; sides coarsely, abundantly punctate, slightly plicate in basal half; glabrous, except for long, erect, sparse setae laterally (mainly in basal half). Prosternum coarsely, sparsely punctate laterally in basal inclined area, impunctate centrally, plicate centrally close to middle, with short and long, erect setae laterally (short setae denser close to procoxal cavities), glabrous centrally; area between middle and peripheral sulcus tumid, with short, sparse setae centrally, longer laterally. Prosternal process flat, with distinct tubercle near apex, minutely, densely punctate, interspersed with coarse, shallow punctures centrally; glabrous centrally, with short and long setae laterally. Mesoventrite finely, sparsely punctate (punctures slightly coarser on sides of center); with short, abundant setae interspersed with some long, erect setae. Mesepimeron, mesa- and metepisternum with short, decumbent, abundant setae. Mesoventral process without tubercle. Metaventrite very finely and sparsely punctate laterally, gradually coarsely, more abundant toward center; sides and area close to metacoxal cavities with very narrow band with short, decumbent pubescence (more distinct close to metacoxal cavities); remaining surface with short, sparse setae, gradually longer, more abundant toward center. Scutellum with minute, sparse setae laterally, glabrous centrally, with fringe of short setae at margin. Elytra. Opaque, coriaceous, mainly in basal half, very finely vermiculate into network (less distinct toward apex) with punctures in center of nearly all areas delimited by network (punctures gradually finer, sparser toward apex); glabrous, except for long, erect, sparse setae, mainly in distal quarter, and minute, sparse setae near apex; apex bispinose; margin of area between spines concave.

Legs. Profemora sub-fusiform; meso- and metafemora clavate; meso- and metafemora with fringe of erect setae on peduncle; apices of meso- and metafemora with rounded lobes.

Abdomen. Ventrites I–IV with short, decumbent, sparse setae centrally, more abundant laterally, mainly on ventrites III–IV, with long, erect, sparse setae centrally, more abundant laterally, mainly on ventrites III–IV; ventrite V with short and long, sparse setae; distal margin of ventrite V widely concave.

Dimensions in mm (male). Total length 32.7; length of prothorax at center 5.6; greatest width of prothorax 5.6; anterior width of prothorax 4.3; posterior width of prothorax 5.4; humeral width 7.7; elytral length 23.2.

Type material. Holotype male from ECUADOR, Pichincha: Tinalandia (12 km E Santo Domingo de los Colorados ; ca. 2500’), 11-17.V.1986, J. E. Eger col. ( FSCA).

Etymology. Named for Frank T. Hovore for his many contributions to our knowledge of American Cerambycidae taxonomy.

Remarks. Coleoxestia hovorei sp. nov. ( Fig. 33-39 ) differs from C. femorata as follows: basal antennomeres sparsely pubescent; pronotum less distinctly plicate; elytra less distinctly coriaceous, mainly toward apex, without minute setae throughout. In C. femorata the basal antennomeres ( Fig. 15 ) are distinctly pubescent, the pronotum is more distinctly plicate ( Fig. 21 ) and the elytra are more distinctly coriaceous with minute setae throughout ( Fig. 21 ). It differs from C. errata ( Fig. 26 ) mainly by the body more robust and the femora ( Fig. 36–38 ) thicker than in C. errata ( Fig. 30–32 ). It differs from C. guttula Martins and Monné, 2005 by the basal antennomeres sparsely pubescent (more densely pubescent in C. guttula ), the pronotum less abundantly punctate, the elytra slightly coriaceous (as in C. femorata and in C. guttula ), and the metatibiae not distinctly carinate laterally (carinate in C. guttula ).

Coleoxestia hovorei sp. nov. is included below in the alternative of couplet “16” from Martins and Monné (2005) (translated; modified):

16’(15). Basal antennomeres sparsely pubescent; elytra not strongly coriaceous; Ecuador....................

..................................................................................................................... C. hovorei sp. nov. – Basal antennomeres densely pubescent; elytra distinctly coriaceous throughout .................. 16

16(16’). General appearance elongate, slender; metafemora narrow, with club less distinct; metatibiae carinate only in basal half; Brazil (Pará, Goiás, Espírito Santo, São Paulo), Bolivia............. .................................................................................................. C. femorata (Gounelle, 1909)

– General appearance robust, short; metafemora thick, with thick club; metatibiae carinate throughout; Brazil (Minas Gerais) ........................... C. guttula Martins and Monné, 2005

Figures

Figures 27–39. 27–29, Coleoxestia fragosoi sp. nov., holotype male: 27) Profemur. 28) Mesofemur. 29) Metafemur. 30–32, C. errata, holotype male: 30) Profemur. 31) Mesofemur. 32) Metafemur. 33–39, Coleoxestia hovorei sp. nov., holotype male: 33) Dorsal habitus. 34) Ventral habitus. 35) Lateral habitus. 36) Profemur. 37) Mesofemur. 38) Metafemur. 39) Head.

Figures 4–16. 4–8, Coleoxestia clarkei sp. nov.: 4) Holotype female, dorsal habitus. 5) Holotype female, ventral habitus. 6) Holotype female, lateral habitus. 7) Paratype male, dorsal habitus. 8) Holotype female, head. 9–12, C. eyai sp. nov., holotype male: 9) Dorsal habitus. 10) Ventral habitus. 11) Lateral habitus. 12) Head. 13) C. chemsaki sp. nov., holotype male, metatarsus. 14) C. aurigena, holotype female, metatarsus. 15) C. femorata, male, antennomere III. 16) C. chemsaki sp. nov., holotype male, antennomere III.

Figures 17–26. 17–21, Coleoxestia chemsaki sp. nov., holotype male: 17) Dorsal habitus. 18) Ventral habitus. 19) Lateral habitus. 20) Head. 21) C. femorata, male, dorsal habitus. 22–25, Coleoxestia fragosoi sp. nov., holotype male: 22) Dorsal habitus. 23) Ventral habitus. 24) Lateral habitus. 25) Head. 26) C. errata, holotype male, dorsal habitus.