Trichastylopsis skillmani Santos-Silva, Pérez-Flores, and Botero

New species

(Fig. 4)

Figure 4.

Trichastylopsis skillmani new species, holotype female: A, dorsal habitus; B, ventral habitus; C, lateral habitus; D, head, frontal view; E, thoracic processes.

ZooBank Registration number: urn:lsid:zoobank.org:act:BD4E63C9-EF9A-47DC-8977-F4775C33644F

Description. Holotype female: Integument mostly dark brown, almost black on some areas; ventral mouthparts light brown, except brown mentum and palpomeres dark brown with light brown apex; anteclypeus brownish; labrum light brown on posterior third, yellowish brown on anterior 2/3; antennomere 3 with irregular brown areas; antennomere 4 with irregular brown areas on basal 2/3 and dark reddish-brown ring on apical third; antennomeres 5–10 reddish brown except dark brown dorsal macula on base, reaching sides on some antennomeres, and dark brown apex, light area gradually shorter towards antennomere 10 (missing antennomere 11). Apex of ventrites 1–4 brownish.

Head. Frons densely, finely punctate; with dense pale beige pubescence close to clypeus and eyes, gradually light brown with yellowish-white interspersed on remaining surface, except white pubescent macula centrally close to vertex; with one long, erect seta close to eyes, setae black basally, yellowish white on remaining surface; with sparse, short, erect yellowish-white setae interspersed. Area between antennal tubercles and eyes with dense yellow pubescence. Vertex with dense, both brown and yellowish-brown pubescence partially obscuring integument, except glabrous median groove and yellow pubescence close to eyes. Area behind upper eye lobes with abundant pubescence almost obscuring integument on some areas, pubescence pale yellow, except brownish pubescent macula after middle; with a few long, erect setae close to eye, setae black basally, yellowish white on remaining surface. Area behind lower eye lobes with dense pale-yellow pubescence, except glabrous area about middle. Genae 1.3 times longer than lower eye lobe; with abundant yellowish-white pubescence not obscuring integument, except dense pale-yellow pubescence close to eye, sparser yellowish-brown pubescence on centre of frontal region, and glabrous apex; with sparse, long, erect yellowish-white setae interspersed, some setae black basally. Antennal tubercles moderately elevated; with abundant pubescence partially obscuring integument, pubescence mostly beige frontally, mostly yellowish brown on remaining surface. Wide central area of postclypeus with abundant beige pubescence partially obscuring integument close to frons, sparser close to anteclypeus; with a few long, erect beige setae interspersed close to frons, and moderately abundant, long setae directed forwards close to anteclypeus, setae mostly yellowish white centrally, pale yellow laterally. Sides of postclypeus glabrous. Labrum with abundant white pubescence not obscuring integument on posterior third, glabrous on anterior third, except fringe of yellow setae on anterior margin; with long, erect pale-yellow setae directed forwards posteriorly close glabrous area, some setae black basally. Outer side of mandibles with dense pale-yellow pubescence on posterior third, with a few long, erect setae interspersed, setae black basally, pale yellow on remaining surface; remaining surface glabrous. Gulamentum smooth, glabrous, except fine, arched striae anterocentrally, and greyish-white pubescence not obscuring integument on intermaxillary process. Distance between upper eye lobes 0.21 times the distance between outer margins of eyes; in ventral view, distance between lower eye lobes 0.52 times the distance between outer margins of eyes; inner margin of upper eye lobes wide, rounded. Antennae (from base to apex of antennomere 10) 1.7 times the elytral length, reaching elytral apex at basal quarter of antennomere 8. Scape with dense yellowish-white pubescence centrally partially obscuring integument, pubescence whiter depending on light intensity, and abundant light brown pubescence not obscuring on basal and apical fifths, except apex of apical fifth with greyish-white pubescence, yellower on outer apex; with long, erect yellowish-white setae ventrally, and a few moderately long, erect yellowish-white setae dorsally. Pedicel mostly with abundant brown pubescence partially obscuring integument; with long, erect pale-yellow setae on posterior half of ventral surface. Antennomere 3 with abundant brown pubescence not obscuring integument and abundant, irregular white pubescent rings interspersed; with long, erect pale-yellow setae ventrally, and sparse, short, erect yellowish-white setae interspersed on remaining surface. Antennomeres 5–7 with dense white pubescence, with irregular light brownish pubescent maculae interspersed, except dark brown pubescent macula on dorsal base and abundant dark brown pubescence not obscuring integument on apical quarter; with sparse, long, erect pale-yellow setae ventrally and sparse, short, erect yellowish-white setae interspersed on remaining surface. Antennomeres 8–10 with dense white pubescence, except brown pubescence not obscuring integument basally, and abundant dark brown pubescence not obscuring integument on apical third; with a few long, erect pale-yellow setae on apex of ventral surface, and sparse, short, erect yellowish-white setae interspersed on remaining surface. Antennal formula (ratio) based on length of antennomere 3: scape = 0.71; pedicel = 0.11; antennomere 4 = 0.74; antennomere 5 = 0.60; antennomere 6 = 0.50; antennomere 7 = 0.44; antennomere 8 = 0.44; antennomere 9 = 0.44; antennomere 10 = 0.40.

Thorax. Prothorax wider than long; with large, rounded tubercle about middle. Pronotum with five tubercles, one subconical on each side of anterior third, the most elevated, one small, slightly elevated, rounded, on each side just after middle, another large, subelliptical, slightly elevated, located centrally from about middle to posterior fifth; moderately abundantly and coarsely punctate; sides with dense pale-yellow pubescence except moderately large, dense black pubescent macula on each side close to posterior margin, one small, subrounded black pubescent macula on apex of lateral tubercle of prothorax, one subrounded black pubescent macula on each side near posterior margin of lateral tubercle of prothorax, another very small, rounded black pubescent macula on each side near central area of lateral tubercles of prothorax, one small, irregular brown pubescent macula on each side near posterior margin, and irregular black pubescent macula on each side near anterior margin; central region with abundant light brown pubescence not obscuring integument, except dense white pubescence on sides of this region, white pubescent area wider on posterior half and obliquely, somewhat fragmented projected towards centre, irregular yellowish-brown pubescent macula on each side of anterior quarter, and abundant white pubescence on each side close to anterior margin; with a few long, erect dark brown setae on sides of posterior third. Sides of prothorax with dense yellowish-white pubescence, pubescence appearing to be whiter depending on light intensity, except slightly sparser pubescence close to anterior margin, light brown pubescence under lateral tubercles. Prosternum with dense yellowish-white pubescence laterally, and abundant yellowish-grey pubescence not obscuring integument centrally. Prosternal process laterally projected under procoxae about middle; with abundant yellowish-grey pubescence not obscuring integument; narrowest area before and after central projection 0.55 times procoxal width. Ventral surface of mesothorax and metathorax with dense yellowish-white pubescence laterally and abundant white pubescence partially obscuring integument centrally, except wide central area of mesoventrite with yellowish-white pubescence centrally and glabrous laterally. Sides of mesoventral process convergent from base to near apex, then distinctly widened; apex concave; narrowest area 0.73 times mesocoxal width. Scutellum with dense white pubescence centrally, pubescent area gradually widened from base to apex, and abundant yellowish-brown pubescence not obscuring integument laterally. Elytra. Moderately abundantly, coarsely punctate, punctures coarsely on sides of dorsal surface, finer and sparser on posterior third; apex subrounded; with two centrobasal crests, innermost slightly longer, both carina shaped, with dense, short, erect tufts of both black and yellowish-brown setae, posterior tuft of innermost crest longer; remaining dorsal surface with sparse tufts of short, erect setae, some tufts only with black setae, some with both yellowish-brown and black setae; humeral carina slightly marked; dorsal surface with two longitudinal carinae slightly marked, starting on centrobasal crests, ending near elytral apex, fused on their apices; posterior half with three oblique, parallel-sided carinae, anterior carinae from humeral carina to suture, posterior carina less elevated, not reaching suture; with four longitudinal, narrow yellowish-brown pubescent bands, two along longitudinal carina almost reaching elytral base, innermost starting between inner centrobasal crest and suture, distinctly arched towards suture near its base, then following along suture, another starting on humerus apically fused to the bands on carinae; anterior oblique carinae with abundant light brown pubescence; dorsal area between base and second oblique carinae and anterior 4/5 of area between humeral carina and area close to epipleural margin with abundant pubescence partially obscuring integument, forming irregular areas with white, pale-yellow, light brown, and greyish-yellow pubescence; area between second and third oblique carinae with dense yellow pubescence obscuring integument; dorsal area between third oblique carina and apex and apical fifth of lateral area with abundant pale-yellow pubescence with white pubescent maculae interspersed, pale-yellow pubescence denser close to suture; epipleural margin with white pubescence with dark brown pubescent spots interspersed. Legs. Femoral peduncles and ventral surface of clubs with abundant white pubescence not obscuring integument, mesofemoral and metafemoral peduncles with small, irregular glabrous areas interspersed; dorsal and lateral surfaces of clubs with abundant pubescence not obscuring integument, forming irregular areas with light brown, yellowish-brown, and yellowish-white pubescence; with moderately abundant, long, erect yellowish-white setae on dorsal surface of peduncles and entire clubs. Tibiae with dense white pubescence, except light brown pubescent macula dorsally near base, moderately narrow light brown pubescent arch before middle, covering dorsal and lateral surfaces, wide dark brown pubescent arch on posterior third, covering dorsal and inner lateral surface, and dense, bristly dark yellowish-brown pubescent ventrally on apical third, bristly pubescence lighter close to apex; with abundant, long, erect pale-yellow setae, sparser on apical quarter; dorsal surface of apical third of mesotibiae and metatibiae with short, erect, thick dark brown setae, more abundant on mesotibiae. Base of tarsomeres 1–3 and 5 with dense white pubescence and remaining surface with abundant dark brown pubescence not obscuring integument; tarsomere 4 with abundant dark brown pubescence not obscuring integument; dark pubescent area on tarsomeres 1–3 and 5 with moderately long, erect dark brown setae; metatarsomere 1 about as long as metatarsomeres 2–3 together.

Abdomen. Ventrites with dense white pubescence, pubescence denser, slightly paler yellow laterally; with moderately abundant, long, erect white setae interspersed laterally. Ventrite 5 longitudinally sulcate on centre of anterior half; apex slightly concave.

Dimensions. Holotype female and paratype female: total length, 13.50–13.10 mm; prothoracic length, 2.20–2.25 mm; anterior prothoracic width, 2.65–2.80 mm; posterior prothoracic width, 3.15–3.20 mm; maximum prothoracic width, 3.55–3.75 mm; humeral width, 5.15–5.35 mm; elytral length, 10.00–9.60 mm.

Type material. Holotype female from MEXICO, Jalisco: Autlán de la Grana, Microondas San Francisco, 3.vii.2018, J.F. Limón and F. Skillman (FSCA). Paratype female from MEXICO, Michoacán: MX37, 98 km S Nueva Italia, 13.vii.2006, Skillman and Hildebrandt (FWSC, formerly FSCA).

Etymology. The new species is dedicated to Frederick W. Skillman, who sent the specimens of the new species for study.

Remarks. Trichastylopsis skillmani is similar to T. albida (LeConte, 1852) (Fig. 5) but differs as follows: lower eye lobes shorter than genae; pronotum with black pubescent maculae on sides close to posterior margin; pronotal punctures sparser; elytra with two oblique light brown pubescent bands on posterior half; prosternal process narrower, narrowest areas slightly wider than half of procoxal width; and erect setae on femora and tibiae distinctly more abundant. In T. albida, the lower eye lobes are as long as genae, pronotum has no black pubescent macula on the sides close to the posterior margin, pronotal punctures are denser, elytra without two oblique pale brown pubescent bands on the posterior half, prosternal process wider with the narrowest areas distinctly wider than half the procoxal width, and the erect setae on femora and tibiae sparser.

Figure 5.

Trichastylopsis albida (LeConte, 1852), female from Coconino, Arizona, United States of America: A, dorsal habitus; B, ventral habitus; C, lateral habitus; D, head, frontal view.

Plistonax antonkozlovi Santos-Silva et al., 2020

(Fig. 6A)

Figure 6.

A, Plistonax antonkozlovi Santos-Silva, Nascimento, and Silva Júnior, 2020, female, dorsal habitus. B, Adetus scissicauda (Bates Reference Bates1874), holotype, dorsal habitus. C, Adetus costicollis Bates, Reference Bates1872, lectotype, dorsal habitus. D, Adetus alboapicalis Breuning, Reference Breuning1943, holotype, dorsal habitus. E, Adetus griseicauda (Bates Reference Bates1872), lectotype, dorsal habitus. Figures 6B–D by Jesus Santiago Moure.

Plistonax antonkozlovi Santos-Silva et al. Reference Santos-Silva, Nascimento and Silva Júnior2020: 547

Remarks. This species was described based on a single male from Panama (Ngöbe-Buglé). The female is similar to male, differing just by the generic features: shorter antennae, protarsi without long setae laterally, and ventrite 5 longer.

Material examined. PANAMA, Bocas del Toro (new province record): Fortuna Cabins, 8.7814° N, 82.1909° W, ultraviolet light light, 1 female, 23–30.v.2022, E.G. Riley (FWSC); 1 male, 5–11.ix.221, B.T. Raber (DHCO).

Adetus scissicauda (Bates, 1874), reinstated

(Fig. 6B)

Tautoclines scissicauda Bates Reference Bates1874: 225

Adetus scissicauda; Bates Reference Bates, Godman and Salvin1880: 107; Breuning Reference Breuning1960: 179 (catalogue, synonymy)

Adetus alboapicalis Breuning Reference Breuning1943: 37; Monné Reference Monné2023b: 428 (catalogue). New synonym

Remarks. Bates (Reference Bates1874) described A. scissicauda based on a single specimen from Nicaragua. Breuning (Reference Breuning1960) synonymised A. scissicauda with A. costicollis Bates, 1872. Breuning (Reference Breuning1971) confirmed the synonymy but did not explain why he considered them as synonyms. However, the description of A. scissicauda does not suggest they are the same species. For example, Bates (Reference Bates1872) reported that the prothorax in A. costicollis is narrowed anteriorly [“thorace antice angustato”], whereas Bates (Reference Bates1874) indicated that the thorax is not narrowed anteriorly [“capite thoraceque (antice haud attenuato)….” The general appearances of the holotype of A. scissicauda (Fig. 6B) and of the lectotype of A. costicollis (Fig. 6C) also do not allow considering them as belonging to the same species. Therefore, we believe that Breuning (Reference Breuning1960, Reference Breuning1971) did not examine the type specimens when establishing the synonymy. Additionally, the elytral pubescence is different in these two species, especially that on the apical region, and A. costicollis has a distinct white pubescent spot just after middle of the elytra, which is absent in A. scissicauda. Furthermore, the elytral apex in A. scissicauda is obliquely truncate, and it is narrowly rounded in A. costicollis. Therefore, we are reinstating A. scissicauda. Breuning (Reference Breuning1943) described A. alboapicalis based on a single specimen from Venezuela. Breuning (Reference Breuning1971) separated A. alboapicalis (Fig. 6D) from A. costicollis as follows (translated): “Elytra notched apically,” leading to A. alboapicalis; and “Elytra rounded apically,” leading to A. costicollis. Breuning (Reference Breuning1960, Reference Breuning1971) incorrectly interpreted the elytral apex in A. scissicauda based on a confused description by Bates (Reference Bates1874), who affirmed that it was obtusely rounded, and strongly emarginate near the suture [“apice ipso obtuse rotundato, juxta suturam conjunctim fortiter emarginato”]. In fact, the elytral apex in the holotype of A. scissicauda is identical to that in the holotype of A. alboapicalis. As the general appearance, including the pronotal and elytral pubescence, is similar in both holotypes, we consider A. alboapicalis to be a junior synonym of A. scissicauda. Adetus scissicauda is similar to A. griseicauda (Bates, 1872) (Fig. 6E) but differs in having sparser pronotal punctures (partially confluent in A. griseicauda), elytra with punctures not aligned (punctures aligned in A. griseicauda), and the elytral apex obliquely truncate (narrowly rounded in A. griseicauda).

Adetus scissicauda is known from Mexico (Guerrero), Nicaragua, Panama, and Venezuela (Bezark Reference Bezark2023; Monné Reference Monné2023b; Tavakilian and Chevillotte Reference Tavakilian and Chevillotte2023).

Dorcasta borealis Breuning, 1940

(Fig. 10D)

Dorcasta borealis Breuning Reference Breuning1940: 207; Monné Reference Monné2023b: 462 (catalogue)

Remarks. This species was described based on a single specimen from Nicaragua. Currently, it is known from Nicaragua and Costa Rica (Bezark Reference Bezark2023; Monné Reference Monné2023b; Tavakilian and Chevillotte Reference Tavakilian and Chevillotte2023).

Material examined. MEXICO (new country record), Yucatán: MX180 (libre) 2 km W Chemax, 1 male, 20.vi.2009, Skillman and Hildebrant (FWSC).

Eupogonius longipilis Bates, 1880

(Figs. 9, 10A–C)

Figure 9.

Eupogonius longipilis Bates, 1885. A–D, Male: A, dorsal habitus; B, ventral habitus; C, lateral habitus; D, head, frontal view. E–F, Female: E, dorsal habitus; F, ventral habitus.

Figure 10.

Lamiinae species. A–B, Eupogonis longipilis Bates, 1885, holotype: A, dorsal habitus; B, labels. C, Eupogonius vittipennis Bates, 1885, female from Mexico (Campeche), dorsal habitus. D, Dorcasta borealis Breuning, 1940, male from Mexico (Yucatán), dorsal habitus. E–F, Hesychotypa danilevskyi Nearns and Nascimento, 2019, female from Panama (Bocas del Toro): E, dorsal habitus; F, ventral habitus.

Eupogonius longipilis Bates Reference Bates, Godman and Salvin1880: 117; Monné Reference Monné2023b: 623

Remarks. When Bates (Reference Bates, Godman and Salvin1880) described E. longipilis, he did not indicate the type locality. Bates (Reference Bates, Godman and Salvin1885) reported, “The localities of this species were accidentally omitted; the species was described from a Guatemalan example. Hab. Mexico, Jalapa, Paso del Macho (Höge), Playa Vicente (Sallé); Guatemala, San Gerónimo [= San Jerónimo], Chacoj (Champion).” The first sentence in Bates (Reference Bates, Godman and Salvin1885) about E. longipilis also includes an error: in the first clause, he said that “The localities of this species were,” but then he stated that there was only one specimen from Guatemala. Therefore, the species was described based on a holotype. However, Monné (Reference Monné2023b) and Tavakilian and Chevillotte (Reference Tavakilian and Chevillotte2023) reported that the species was described based on syntypes. Monné (Reference Monné2023b) reported only that the syntypes were from Guatemala. Tavakilian and Chevillotte (Reference Tavakilian and Chevillotte2023) reported that the syntypes were from Guatemala, Baja Verapaz, San Jéronimo and were collected by G.C. Champion. We do not know if Gérard L. Tavakilian saw the holotype at the BMNH. Even if there were syntypes and not only a holotype, it would not be possible to say that they were all from San Jerónimo. This is because Bates (Reference Bates, Godman and Salvin1885) recorded two different places in Guatemala. According to Selander and Vaurie (Reference Selander and Vaurie1962): “San Gerónimo = San Jerónimo, Baja Verapaz, Guatemala. Town in the highlands about 10 km southeast of Salama: 15°08′, 90°11′. This locality is listed erroneously at least once in the ‘Biologia’ for México”; “Chacoj, Alta Verapaz, Guatemala. Settlement (formerly called La Hamaca) on the Rio Polochic just west of La Tinta; shown on “Biologia” Map 8 at about 15° 19′ N, 89° 56′ W.” Fortunately, Keita Matsumoto (Natural History Museum, London, United Kingdom) sent us photographs of the holotype (Fig. 10A) and its labels (Fig. 10B). Based on those, we now can affirm that the type locality is San Jerónimo in the Guatemalan state of Baja Verapaz.

Currently, E. longipilis is known from Mexico (Veracruz), Guatemala, Honduras, and Panama (Bezark Reference Bezark2023; Monné Reference Monné2023b; Tavakilian and Chevillotte Reference Tavakilian and Chevillotte2023).

Material examined. MEXICO, Chiapas (new state record): MX190, 5 km S of Ososingo [sic, Ocosingo], 1 male, 1 female, 8.vi.2009, Skillman and Hildebrandt (FWSC); Ocozocoautla, 3 km W Laguna Bélgica, 16º 53′ 31.5′′ N, 93º 27′ 09.5′′ W, 956 m, atraído a la luz, 1 male, 4-vi-2005., V.H. Toledo (CIUM).

Hesychotypa danilevskyi Nearns and Nascimento, 2019

(Fig. 10E–F)

Hesychotypa danilevskyi Nearns and Nascimento Reference Nearns and Nascimento2019: 2; Monné Reference Monné2023b: 844 (catalogue)

Remarks. This species was described based on a single male from Panama (Bezark Reference Bezark2023; Monné Reference Monné2023b; Tavakilian and Chevillotte Reference Tavakilian and Chevillotte2023). The female differs from male by the scape slender, and ventrite 5 longitudinally sulcate centrally on basal 2/3, depressed on apical third, and centrally emarginate on apex.

Material examined. PANAMA, Bocas del Toro (new province record): Fortuna Cabins, 8.7814° N, 82.1909° W, ultraviolet light, 1 female, 23–30.v.2022, E.G. Riley (FWSC).