Stizocera ruthveronae, Taboada-Verona & Botero, 2020

Taboada-Verona, Carlos & Botero, Juan Pablo, 2020, A new species of Stizocera Audinet-Serville, 1834 (Coleoptera: Cerambycidae) from Colombia with an updated key to species of the genus and new geographical records in Cerambycinae, Papéis Avulsos de Zoologia 60, pp. 1-8 : 1-3

Stizocera ruthveronae sp. nov.

( Fig. 1 )

Description: Female. Integument dark-brown; mesoventrite, metaventrite and peduncle of femora reddish. Body covered by long and erect dense yellowish setae. Head ( Fig. 1D ): Frons transverse, smooth and glabrous centrally, laterally finely punctate with short, sub-erect, sparse, whitish setae. Vertex concave between antennal tubercles, with microrugosities and with abundant fine punctures close to margins. Coronal suture indistinct. Antennal tubercles glabrous on base, acute apically. Upper eye lobes with five rows of ommatidia. Distance between upper eye lobes about 2.5 times length of scape; in frontal view, distance between lower eye lobes ⅔ the length of scape. Genae moderately short, distinctly acute at apex. Frontoclypeal sulcus indistinct. Clypeus truncate, yellowish laterally. Labrum rounded at distal margin, yellowish laterally, with yellowish setae. Mandibles with long whitish setae, glabrous at apex. Antennae 11-segmented; antennomeres III-VIII armed, with dense and decumbent yellowish setae at outer face and long and erect setae at inner face. Apical spines of antennomere III and IV longer than the apex diameter of respective antennomeres (broken apically); apical spine of antennomere V about ¼ of length of its antennomere; apical spine of antennomere VI about 0.2 times length of its antennomere; apical spine of antennomere VII with 0.075 times length of antennomere; antennomere VIII with spicule at outer apex. Scape gradually dilated toward apex. Antennal formula (ratio) based on length of antennomere III (excluding spine): scape = 1.02; pedicel = 0.24; IV = 0.93; V = 1.07; VI = 1.00; VII = 0.98; VIII = 0.83; IX = 0.83; X = 0.73; XI = 0.95.

Thorax ( Figs. 1 A-B): Prothorax 1.08 times longer than wide; sides subparallel, with rounded projection close to anterior margin,with long yellowish setae.Pronotum with transverse wrinkles, four gibbosities poorly elevated, two antemedian and two at posterior third; with transversal posterior depression, covered laterally by dense yellowish setae. Prosternum slightly depressed, anterior margin almost glabrous, remaining surface with dense yellowish pubescence. Prosternal process densely covered by yellowish pubescence, sides subparallel and apex projected laterally, width at narrowest point equal to ¼ of procoxal cavity width. Mesoventrite densely covered by dense yellowish pubescence, mainly laterally. Mesoventral process truncated at posterior margin, with apex about 0.6 times the mesocoxal cavity width. Mesanepisternum, mesepimeron, and metanepisternum with dense yellowish pubescence hiding the surface. Scutellum with dense yellowish pubescence hiding the surface. Elytra ( Fig. 1A ): Surface of anterior half with coarse, dense punctures; punctures are gradually indistinct from the middle to the elytral apex;apex emarginate,with outer short spine. Legs ( Figs. 1 A-B): Profemora unarmed; meso and metafemora pedunculate, sparsely punctate, with long, erect setae, bispinose;mesofemoral inner spine longer than the outer one; metafemoral inner spine shorter than the outer one. Abdomen ( Fig. 1B ): Ventrites with long and short erect, sparse yellowish setae; apex of ventrite V sub-rounded.

Dimensions, female (in mm): Total length, 12.2; prothoracic length, 2.5; anterior prothoracic width, 2.2; posterior prothoracic width, 2.0; widest prothoracic width, 2.3; humeral width, 3.0; elytral length, 8.2.

Type material: Holotype, COLOMBIA, Bolívar : Archipiélago de San Bernardo, Isla Tintipán (09°47′40.39″N, 75°50′43.35″W, 0 m.s.n.m) ( Fig. 2 ), 1 ♀, 24.III.2005, colecta manual, P. Duque col. ( MEPB).

Etymology: The species epithet is in honor of Ruth Verona Anaya, mother of the first author, for your love, understanding and constant support.

Remarks: Stizocera ruthveronae sp. nov., is similar to S. asyka Galileo & Martins 2004 , S. nigroflava Zajciw 1965 and S. tristis (Guérin-Méneville, 1844) by the body covered of long and dense setae; integument color and meso and metafemora pedunculate and bispinose. Stizocera ruthveronae sp. nov., differs by antennomeres III-VIII armed (antennomeres III-V armed in those species, in S. nigroflava the antennomere VI can be also armed) and pronotum with four gibbosities poorly elevated. Other characteristics used to differentiate S. ruthveronae sp. nov. can be observed in the following key.

Figures

Figure 1. (A-D) Stizocera ruthveronae sp.nov.,holotype female:(A) dorsal habitus;(B) ventral habitus;(C) lateral habitus;(D) head,frontal view.

Figure 2. Location of the TintipánIsland,type-locality of Stizocera ruthveronae sp.nov.