Ochraethes confusus, Pérez-Flores & Toledo-Hernández, 2022

Pérez-Flores, Óscar & Toledo-Hernández, Víctor H., 2022, Species delimitation in the genus Ochraethes Chevrolat, 1860 (Coleoptera: Cerambycidae), with description of two new species, European Journal of Taxonomy 845, pp. 1-29 : 9-13

Ochraethes confusus sp. nov.

urn:lsid:zoobank.org:act:A9F5815E-5B2E-4092-9482-4B4F69E27A63

Fig. 1

Etymology

The specific name is an adjective derived from Latin ‘ confusus ’ (‘confused’); refers to the irregular pattern of black pubescence on the elytra, which is similar to that of other species of the genus.

Material examined

Holotype MEXICO • ♂; Puebla, 1 km SW of Acatepec ; 14 Oct. 1978; E. Giesbert leg.; EMEC.

Paratypes (34) MEXICO • 2 ♂♂, 2 ♀ ♀; Muséum de Paris 1916 de Tonanzin, Biant 1864; MNHN . – Chiapas • 3 ♂♂, 2 ♀♀; 16 km W of Ocozocoautla “ El Aguacero ”; 30 Sep. 1994; V.H. Toledo leg.; CIUM • 1 ♀; same collection data as for preceding; 16–23 Oct. 1988; E. Giesbert leg.; JEWC . – Oaxaca • 2 ♂♂; 4 km S of Miltepec ; 13 Oct. 1978; E. Giesbert leg.; FSCA • 2 ♂♂, 2 ♀♀; 15 km NE of Huajuapan de León ; 2 Nov. 1991; alt. 1570 m; Felipe A. Noguera and A. Rodríguez leg.; EBCC • 2 ♂♂; Km 26 “carr. fed.” [federal road] Huajuapan de León–Oaxaca ; 17°42′45.7″ N, 97°39′07.3″ W; alt. 2112 m; 5 Oct. 2009; J. Romero Nápoles leg.; COLPOS • 1 ♂, 1 ♀; Huajuapan de León, Huejonapa ; 17°49′58.96″ N, 97°47′19.35″ W; 6 Nov. 2016; O. Pérez Flores leg.; BMNH • 2 ♂♂, 1 ♀; same collection data as for preceding; CNIN • 2 ♂♂, 2 ♀♀; MX 125, 38 km NE of Huajuapan de León ; 18 Oct. 2001; F. Skillman and J. Davidson; FWSC . – Puebla • 1 ♀; same collection data as for holotype; EMEC • 1 ♀; 10 km NE of Chapulco ; 15 Oct. 1978; E. Giesbert leg.; FWSC • 1 ♀; Caltepec, 3 km W of Acatepec ; 18°13′14.4″ N, 97°36′23.2″ W; alt. 2022 m; 27 Oct. 2014; L. Cervantes and J. Báez leg.; “ matorral espinoso”; IEXA • 2 ♂♂, 2 ♀♀; Tehuacan ; 19 Oct. 1941; DeLong, Good Culdwell and Plummer leg.; FMNH .

Additional material

MEXICO – Chiapas • 1 ♀; 16 km W of Ocozocoautla, “ El Aguacero ”; 30 Sep. 1994; V.H. Toledo leg.; CIUM • 1 ♀; same collection data as for preceding; 11 Oct. 1994; CIUM • 1 ♂, 1 ♀; same collection data as for preceding; 20 Oct. 1994; CIUM • 1 ♂, 1 ♀; same collection data as for preceding; EBCC • 5 ♂♂; same collection data as for preceding; 2 Nov. 1994; CIUM • 1 ♂; same collection data as for preceding; EBCC • 6 ♂♂; same collection data as for preceding; 4 Nov. 1994; CIUM • 1 ♂, 2 ♀♀; same collection data as for preceding; EBCC • 1 ♂; same collection data as for preceding; 5 Nov. 1994; CIUM • 1 ♀; “ El Aguacero ”, 16 km W of Ocozocoautla; 16–23 Oct. 1988; E. Giesbert leg.; FSCA • 1 ♂, 2 ♀♀; Teotitlán del Valle ; 19 Oct. 1978; E. Barrera leg.; CNIN • 1 ♂; Tuxtla Gutiérrez, Cañón del Sumidero , Mirador El Tepehuaje ; 16°49′39.5″ N, 93°05′26.3″ W; alt. 1257 m; 28 Oct. 2008; M.M. Álvarez and T. Red leg.; “ selva baja caducifolia”; CIUM . – Oaxaca • 1 ♀; 22 Sep. 1923; E.G. Smyth leg.; JEWC • 1 ♂; 3 km SSE of Llano Verde, Km 124 “carr.” [road] Oax–Huajuapan ; 17°16′49″ N, 97°04′26″ W; alt. 2280 m; 8 Oct. 2003; J. Romero Nápoles leg.; COLPOS • 1 ♂; 3 mi. from Miahuatlán on Cuistla rd; 15 Oct. 1948; E.O. Wagner leg.; EMEC • 1 ♂; 3 mi. S El Camerón ; 2 Oct. 1986; R. Miller and L. Stange leg.; FSCA • 2 ♂♂; 6 km S of Santiago Matatlán, RMO Ocotepec ; 16 Oct. 2005; F. Skillman and B. Eya leg.; FWSC • 1 ♂, 2 ♀♀; 8 mi NW of Tutla ; alt. 5500 feet; 6 Oct. 975; J. Powell, J. Chemsak, T. Eichlin and T. Friedlander leg.; EMEC • 2 ♂♂, 2 ♀♀; 15 km NE of Huajuapan de León ; alt. 1570 m; 2 Nov. 1991; Felipe A. Noguera and A. Rodríguez leg.; EBCC • 1 ♀; 25 km SE of Huajuapan ; 13 Oct. 1978; E. Giesbert leg.; FSCA • 8 ♂♂, 7 ♀♀; 25 km SW of Huajuapan de León ; 24 Oct. 2005; F. Skillman and B. Eya leg.; flowers; FWSC • 1 ♀; 30 km SE of Cuicatlan ; alt. 1281 m; 7 Oct. 2005, E. Elizalde and L. Cervantes leg.; “selva baja”; IEXA • 2 ♂♂, 1 ♀; 35 km N of Huajuapan de León ; 15 Oct. 2005; F. Skillman and B. Eya leg.; FWSC • 6 ♂♂, 2 ♀♀; 38 km NE of Huajuapan de León ; 18 Oct. 2001; F. Skillman and J. Davidson leg.; FWSC • 1 ♂, 2 ♀♀; 50 km NE of Huajuapan de León ; 11 Oct. 1994; E. Giesbert leg.; FSCA • 1 ♂, 2 ♀♀; 63 km NE of Huajuapan ; 14 Oct. 1978; E. Giesbert leg.; FSCA • 1 ♀; Chapulapa; 3 May 77; Castillo Cabos leg.; COLPOS • 3 ♂♂, 5 ♀♀; Guelatao ; alt. 1800 m; 15 Nov. 1964; EMEC • 1 ♂; Km 68.5 “carr. fed.” [federal road] Huajuapan de León–Oaxaca ; 18°12′28.7″ N, 97°38´44.6″ W; alt. 1973 m; 6 Oct. 2009; W.J. Romero Nápoles leg.; COLPOS • 1 ♀; Km 75 “carr. fed.” [federal road] Huajuapan de León–Oaxaca ; 17°42′45.7″ N, 97°39′07.3″ W; alt. 2112 m; 6 Oct. 2009; J. Romero Nápoles leg.; COLPOS • 1 ♂; Km 122 “carr. fed.” [federal road] Miahutlan – Puerto Ángel ; 16°14′55.1″ N, 96°32′44.2″ W; alt. 2051.3 m; 3 Oct. 2009; J. Romero Nápoles leg.; COLPOS • 1 ♂; Miahuatlán ; alt. 1000 m; 9 Oct. 1948; H.O. Wagner leg.; EMEC • 1 ♀; km 15 Miahuatlán–Puerto Ángel ; 16°14′55″ N, 96°32′43″ W; alt. 2047 m; 11 Oct. 2005; W. L. Cervantes and E. Elizalde leg.; “encinar”; IEXA • 1 ♀; Monte Albán ; 17°03′00″ N, 96°45′56″ W; alt. 1859 m; 7 Oct. 2005; E. Elizalde and L. Cervantes leg.; “bosque pino”; IEXA • 13 ♂♂, 7 ♀♀; vicinity of Matatlan ; 19 Oct. 2001; F. Skillman and J. Davidson; microwave tower; FWSC . – Puebla • 2 ♀♀; 1 km SW of Acatepec ; 14 Oct. 1978; E. Giesbert leg.; FSCA • 3 ♂♂, 3 ♀♀; 2 km SE of Zapotitlán Salinas ; alt. 1410 m; 3 Nov. 1991; F.A. Noguera and A. Rodríguez leg.; EBCC • 1 ♂; 4 mi. SW of Morelos ; 20 Sep. 1977; J. Chemsak and A. and M. Michelbacher leg.; “cañada”; EMEC • 1 ♂; 5 mi. S of Chapulco; alt. 7500 feet; 4 Oct. 1975; J. Powell leg.; EMEC • 2 ♂♂; 6 km SW of Teontepec ; 2 Oct. 2003; J. Romero Nápoles leg.; COLPOS • 2 ♂♂; 6 mi. S of Zapotitlan ; alt. 5500 feet; 6 Oct. 1975; EMEC • 4 ♂♂, 1 ♀; 7 km SE of Morelos ; alt. 7700 feet; 4 Oct. 1975; J. Powell, J. Chemsak, T. Eichlin and T. Friedlander leg.; “cañada”; EMEC • 1 ♂; 9 km NE of Chapulco ; 15 Oct. 1978; E. Giesbert leg.; FSCA • 1 ♀; 10 km S of Zapotitlán ; 14 Oct. 1978; E. Giesbert leg.; FSCA • 2 ♂♂, 1 ♀; 18 km SE of I. de Matamoros ; alt. 1270 m; 31 Oct. 1991; F.A. Noguera and A. Rodríguez leg.; EBCC • 3 ♂♂, 5 ♀♀; 23 km SE of Zapotitlán Salinas ; alt. 1880 m; 3 Nov. 1991; F.A. Noguera leg.; EBCC • 1 ♀; 25 km N of Tehuacán ; 4 Nov. 1991; F.A. Noguera and R. Ayala leg.; EBCC • 1 ♀; Tehuacán ; Sep. 1917; C.C. Hoffman leg.; CNIN • 1 ♂; El Tepenene, 10 mi. SE of Izucar de Matamoros ; alt. 4500 feet; 8 Oct. 1975; J. Chemsak, T. Eichlin and T. Friedlander leg.; EMEC • 1 ♂, 1 ♀; Km 36 “carr.” [road] Zapotitlán–Acatepec ; 18.17.30° N, 97.31.737° W; alt. 1633 m; 3 Oct. 2003; J. Romero Nápoles leg.; COLPOS . – Tabasco • 1 ♂; Tapijulapa ; 28 Jun. 90; Moreno leg.; CNIN .

Description

Male (holotype)

COLORATION. Integument black on head, thorax, elytra, and abdominal ventrites I–III, and basal half of IV; from reddish brown to dark orange on antennae, palpi, legs, posterior half of abdominal ventrite IV, and abdominal ventrite V.

HEAD. Surface finely and densely punctate; with short bright yellow pubescence on frons, genae, gulamentum, and mouthparts, bright orange on vertex (yellow in some specimens), and dense, long, erect, homogeneous bright yellow setae. Frons 2.2× as wide as long; median groove defined; tentorial depression transverse superficial and incomplete. Eyes finely faceted, with interlobular space as long as width lower lobe; distance between upper eyes lobes 4.5 × as wide as upper lobe; interantennal space 0.6× length of scape. Antennal tubercles elevated with distinct depression toward median groove. Genae 0.7× as wide as a lower lobe. Anteclypeus 3.5 × as wide as long. Labrum narrower than anteclypeus with straight sides. Gulamentum 4× as wide as long. Antennae 1.1× elytral length, reaching posterior third of elytra, with sparse bright yellow (brown on some areas) pubescence on scape, pedicel, and antennomeres III–IV, brown on antennomeres V–XI, and long setae on scape, pedicel, and antennomeres III–XI, especially ventrally and toward apex; antennomere XI with apex rounded; antennal ratio based on length of antennomere III; scape = 1.22; pedicel = 0.51; IV = 0.94; V–VII = 1.00; VIII–IX = 0.91; X = 0.65; XI = 0.92.

THORAX. Prothorax 1.2× as wide as long, rounded laterally. Pronotum moderately finely punctate, with dense bright yellow pubescence and bright orange pubescence interspersed; on central area more bright orange with transverse black pubescence (sometimes brown), and dense bright yellow (some brown) erect setae; disk with fossula from base to middle, base constricted laterally, and laterobasal area arched. Scutellum longer than wide, apically obtuse, densely covered with bright yellow pubescence. Elytra 2.25 × as long as wide, with dense bright yellow pubescence (occasionally bright orange), and long, erect bright yellow (some ochre) setae on base and apex (some along elytral suture); with five transverse black pubescent bands as follows: first on base, undulated, from humerus to suture; second on anterior third, surrounding semicircular yellow pubescent macula; third on middle; fourth on posterior third, wider than the previous ones, subparallel, reaching suture; and fifth near to the apex, as wide as third and fourth, not reaching suture; sub-sutural costa distinguishable, more clearly on posterior third; parasutural region depressed, with its widest zone half width of elytron; apex obliquely truncate, with apicolateral projection reduced. Humeri elevated. Prosternum with dense bright yellow pubescence and moderately erect bright yellow setae; prosternal process narrow and posteriorly arcuate, apex with rounded lobes. Mesoventrite anteriorly strongly elevated, mostly with dense bright yellow pubescence and scarce erect bright yellow setae; mesoventral process broad, 0.7 × width of mesocoxal cavities, in lateral view, surpassing dorsal surface of mesocoxae, apex emarginate; mesanepisternum covered with dense pubescence, abundantly punctate; mesepimeron less pubescent than mesanepisternum. Metaventrite with dense bright yellow pubescence, apical projection rounded; metanepisternum more pubescent than metaventrite. Legs with dense bright yellow pubescence, pale yellow on coxae, some brown and ochre on tarsi; metafemora reach apex of ventrite IV, with apical projection reduced, rounded; metatibiae with innermost spine just longer than outermost; metatarsomere I as long as metatarsomeres II–V together.

ABDOMEN. Intercoxal process moderate, gradually narrowed toward acute apex, with homogeneous bright yellow pubescence, denser laterally and apically, and erect, sparse bright yellow setae; apex of ventrite V truncate and slightly crenulated.

MALE GENITALIA. Parameres moderately sclerotized, subparallel in ventral view, narrower toward apex; with short setae throughout and long apical setae; inter-parameres space rounded; basal projection discontinued, very oblique in ventral view, extending to middle of each paramere ( Fig. 1E ).

Female

Similar to male. Antennae just surpassing first third of elytra, antennomeres IX–XI shorter and wider than in males. Metafemora slightly shorter than in male. Color of ventrites usually reddish brown-dark orange, occasionally similar to male. Apex of ventrite V rounded.

Dimensions (mm)

Holotype male. Total length, 15.15; prothoracic length, 3.25; anterior prothoracic width, 3.40; posterior prothoracic width, 3.05; widest prothoracic width 3.95; humeral width, 5.20; elytral length, 10.60. Paratypes male/female. Total length, 8.85–15.25/9.85–18.60; prothoracic length, 1.70–3.34/1.95–3.85; anterior prothoracic width, 1.85–3.52/2.10–5.14; posterior prothoracic width, 1.55–3.16/1.75–4.35; greatest prothoracic width 2.15–4.08/2.40–5.70; humeral width, 2.85–5.30/3.05–7.20; elytral length, 6.30–10.73/7.0–13.10.

Distribution

Mexico: Puebla, Oaxaca, Chiapas, Tabasco.

Flower records

Helianthus sp. and Tithonia tubiformis (Jacq.) Cass.

Remarks

The specimens from southeastern Oaxaca and Chiapas have the integument colour darker on legs and abdomen. The pubescent pattern of this species is consistent in males and females and allows it to be distinguished it from other species of the genus; only males have darker pubescence on the body. Ochraethes confusus sp. nov. is most similar to O. sommeri ( Chevrolat, 1835) in the pubescence pattern, but differs by the five transverse bands of black pubescence on the elytra (four in O. sommeri ), which are slender, and more sinuous. Also, it can be distinguished from O. sommeri by the anteclypeus and labrum reduced (no reduced in O. sommeri ); metafemora reaching apex of ventrite IV (reaching V in O. sommeri ), and the apical projection of the metafemora reduced (not reduced in O. sommeri ).

Figures

Fig. 1. Ochraethes confusus sp. nov. A–D. Holotype, ♂ (EMEC). A. Habitus, dorsal. B. Habitus, ventral. C. Habitus, lateral. D. Frons. E. Paratype, ♂ (CNIN), ventral view of male genitalia. F. Paratype, ♀ (EMEC), habitus, dorsal.