Pseudastylopsis alba Pérez-Flores & Santos-Silva, 2021

Pseudastylopsis alba Pérez-Flores & Santos-Silva, 2021 View in CoL

Pseudastylopsis albus Pérez-Flores & Santos-Silva, 2021: 185 View in CoL .

Remarks. – The suffix “-opsis,” from Greek ὄψις (ópsis, meaning appearance), is feminine gender. Therefore, Pseudastylopsis is feminine gender and the species-group name, an adjective, must be corrected to “alba .”

Pseudastylopsis santossilvai sp. nov.

( Fig. 1-14)

ZooBank:http://zoobank.org/ 78DFDDBE-2139-4391-BBCB-6FAD7313765A

Holotype, ♀, COSTARICA, Puntarenas , Santa Elena, Olingo Monteverde lodge, aprox. 2.5 km from Bosque Nuboso Monteverde reserve, 10º24’23’’N 84º49’05’’W, 1,458 m.s.n.m., 29.V-03.VI.2022, at light, S. Devesa leg. ( SDPC), intended to be deposited in MHNUSC. GoogleMaps

Paratypes

- COSTA RICA, Puntarenas, Santa Elena, El Establo hotel, 6-7.III.2022, J. Vlasak leg., 1 ♂ and 1 ♀ ( JVCO) ;

- PANAMA, Chiriquí: Tree Treck Boquete , 8.81ºN 82.396ºW, 1 ♂, 31.VIII-4.IX.2021, B.T. Raber leg. ( DHCO) GoogleMaps .

Description of the holotype

Coloration. – Head capsule black;ventral mouthpartsreddishbrown,except palpomeres black with yellowish-brown apex; anteclypeus brownish with irregular dark-brown areas; labrum dark brown on posterior 2/3, brownclose to anterior margin, and yellowish-brown between these two areas; scape brown with irregular black areas on basal third, center and apical area, reddish brown on remaining surface; pedicel blackish with irregular reddish-brown areas; antennomere III reddish brown, with irregular dark-brown maculae interspersed and blackish apex; antennomere IV orangish brown with large brown areas interspersed, brown areas absent on basal seventh, except dark-brown apex; antennomeres V–IX brownishonbasal fifth and apical third, orangish-brown on remaining surface;antennomere X brownish;antennomere XI brownish, except orangish-brown apex. Prothorax brownish centrally, yellowish laterally, with two large black maculae centrally, three black maculae basally, two small black maculae apically, and one large black macula on sides from base to lateral tubercle. Ventral surface dark reddish brown with round black maculae on metaventrite and two small maculae on mesoventrite. Scutellum mostly black. Elytra mostly dark reddish brown with irregular black maculae interspersed, black maculae larger and more abundant on anterior half; posterior third with oblique row of irregular yellowish white maculae not reaching suture; two elongated yellowish white maculae on apical fifth. Femora reddish brown with irregular blackish maculae on peduncle and moderately large black maculae on dorsal and ventral surface of femoral club, another smaller about middle.Tibiae brown basally, reddish brown on remaining basal quarter, with black ring from anterior quarter to before middle, narrower and browner ventrally, black dorsally and laterally about apical third, orangish brown on remaining surface. Protarsomeres dark brown except reddish brown basal third of protarsomere V. Meso- and metatarsomere I reddish brown on basal half, dark brown on remaining surface; II–III dark brown; IV and basal half of V reddish brown, remaining surface of V dark brown. Abdominal ventrites mostly dark brown with irregular black maculae interspersed,except brownish apex of ventrite 4.

Head. – Frons abundantly, minutely punctate; with abundant yellowish-brown pubescence not obscuring integument, except moderately small black pubescent macula close to each eye, irregular black pubescent maculae interspersed superiorly and glabrous median groove; with one long, erect dark-brown seta close to eyes. Vertex with abundant yellowish-white pubescence partially obscuring integument, except a few small black spots between antennal tubercles, transverse, irregular pale-yellow pubescent band between antennal tubercles and upper eye lobes, small, irregular yellowish-white pubescent macula close to eyes, two black pubescent maculae centrally close to prothorax, two black maculae laterally, behind upper eye lobes close to prothorax, and small glabrous median groove. Area behind upper eye lobes with abundant black pubescence close to vertex and lower eye lobe, and abundant yellowish-white pubescence between these two areas. Area behind lower eye lobes with abundant yellowish-white pubescence not obscuring integument. Genae with abundant yellowish-white pubescence not obscuring integument, except glabrous apex; with one round black macula laterally with one long, erect blackish seta. Antennal tubercles with abundant black pubescence partially obscuring integument, except whitish pubescence on apex of anterior and posterior regions and yellow pubescence on apex of dorsal surface. Wide central area of postclypeus with moderately sparse yellowish-brown pubescence close to frons and sparse, short yellowish-brown setae directed forward close to anteclypeus; with a few long, erect yellowish-brown setae interspersed close to frons, and one long, erect seta on each side close to frons, seta black on basal third, yellowish on apical 2/3. Labrum with moderately sparse yellowish-white pubescence on posterior 2/3, glabrous on anterior third, except anterior margin with dense fringe of yellowish-brown setae; posterior 2/3 with long, erect setae interspersed, setae dark brown on basal half, yellowish on apical half. Gulamentum smooth, glabrous, except intermaxillary process with moderately abundant yellowish-white pubescence. Distance between upper eye lobes 0.20 times distance between outer margins of eyes; in frontal view, distance between lower eye lobes 0.60 times distance between outer margins of eyes. Antennae 2.00 times elytral length, reaching elytral apex at apical fifth of antennomere VI. Scape slightly projected on inner apex; with abundant blackish pubescence dorsally near base, close to apex and centrally, and abundant yellowish pubescence not obscuring integument on remaining surface, except dark-brown

FAUNITAXYS - ISSN (Print): 2269 - 6016 - ISSN (Online): 2970 - 4960

1 - 3. Habitus. 1. Dorsal. 2. Ventral. 3. Lateral. 4. Head. 5. Prosternal and mesoventral processes. pubescence on some small black areas. Pedicel with abundant, mostly blackish pubescence partially obscuring integument at apex, yellowish brown at base. Antennomeres III–IV with dense yellowish-white pubescence on light areas, dark yellowish brown on dark areas, except black pubescence on black apical area. Antennomeres V–X with dense yellowish pubescence on central area, yellowish brown basally and apically, the apical and basal areas increasing in length from antennomere V to antennomere X. Antennomere XI with moderately sparse yellowish–brown pubescence on basal 2/3 and abundant whitish pubescence not obscuring integument on apical third.

Antennal formula based on length of antennomere III:

– Scape = 0.68. – Pedicel = 0.09. – IV = 0.82. – V = 0.64. – VI = 0.32. – VII = 0.27. – VIII = 0.27. – IX = 0.27. – X = 0.27. – XI = 0.23.

Thorax. – Prothorax wider than long; sides with a very small tubercle with blunt apex about middle; basal and apical constriction well marked. Pronotum with eight tubercles, largest two elevated, subconical, close to center of anterior third, just below apical constriction, two slightly elevated, rounded dorsally, on sides of posterior third, two very slightly elevated on each side of anterior third, laterally to the largest tubercles, and another two slightly elevated, about middle of posterior third; moderately abundantly, coarsely punctate, except smooth tubercles; with abundant yellowish-brown pubescence not obscuring integument on central area from anterior to posterior constriction, a band of yellowish-white pubescence laterally and yellowish pubescence on sides; black areas as follows: two large, longitudinal bands centrally, from anterior 1/4 to posterior 1/4, one triangular basally next to scutellum, two small laterally on anterior 1/4 and two small laterally on posterior 1/4. Sides of prothorax somewhat sparsely, coarsely punctate; with abundant, both white and yellowish-brown pubescence not obscuring integument, except large black pubescent macula posteriorly from base to small round central tubercle; with a few long, erect blackish setae posteriorly close to pronotum. Prosternum with abundant yellowish pubescence not obscuring integument, pubescence slightly denser and yellower laterally. Prosternal process with moderately abundant whitish pubescence not obscuring integument; narrowest area 0.23 times procoxal width. Mesoventrite with sparse yellowish-white pubescence centrally, abundant laterally. Mesanepisternum, mesepimeron, metanepisternum, and sides of metaventrite with abundant yellowish pubescence not obscuring integument; remaining surface of metaventrite with slightly sparser yellowish pubescence. Mesoventrite without large black maculae; mesanepisternum with two black maculae, one large and one very small; metaventrite and metanepisternum with numerous, large round black maculae. Apical margin of mesoventral process slightly concave; narrowest area 0.47 times mesocoxal width; apex 0.53 times mesocoxal width. Scutellum with abundant blackish pubescence not obscuring integument, except sparse yellowish pubescence interspersed.

Elytra. – Parallel-sided on anterior half, gradually narrowed toward apex on posterior half; apex rounded; with abundant small tubercles. Centrobasal crest slightly distinct, tumid basally, with a row of tubercles. Humeral carina slightly distinct on anterior half, absent on posterior half. Abundantly, moderately coarsely punctate on anterior half, punctures gradually finer toward apex on posterior half. Anterior half of dorsal surface with yellowish-green pubescence, not obscuring integument; remaining dorsal surface with more yellowish-brown pubescence not obscuring integument. Base of centrobasal crest with dense, oblique, yellowish-brown pubescent band; apex of tubercles on centrobasal crest with short, black pubescence; most of remaining tubercles with black pubescence, some with yellowish-brown pubescence basally, except five tubercles located dorsally slightly after middle, together obliquely aligned, with dense white pubescence anteriorly and yellowish-brown pubescence apically; with small, oblique, white pubescent band near apex.

Legs. – Femora with abundant yellowish-white pubescence not obscuring integument. Protibiae with moderately sparse yellowish-white pubescence basally, dense white pubescence dorsally and laterally on remaining basal 2/3, except blackish pubescence on black area, abundant black pubescence dorsally and laterally on apical third, and abundant, bristly yellowish-brown pubescence on remaining ventral surface; mesotibiae with pubescence as on protibiae dorsally and laterally, ventral surface with yellowish-brown pubescence sparser and distinct only on posterior half, and posterior half of ventral surface with short, thick, erect yellowish-brown setae; metatibiae with sparse yellowish-white pubescence on lighter areas, except denser white pubescence dorsally on central light area, somewhat abundant dark-brown pubescence on dark anterior area, sparse yellowish-brown pubescence with short yellowish-white setae interspersed dorsally and laterally on apical black area, and bristly yellowish-brown pubescence ventrally on posterior half, with short, erect yellowish-brown setae interspersed. Dorsal surface of tarsi with abundant yellowish-brown pubescence not obscuring integument; tarsomeres V with a few long, erect dark-brown setae on apical third; metatarsomere I subequal to II– III together.

Abdomen. –Ventrites with abundant yellowish-white pubescence not obscuring integument laterally, yellowish-brown centrally; abundant round black maculae interspersed; apex of ventrite 4 glabrous; ventrite 5 triangularly shaped on basal 2/3, subparallel-sided projected on apical 1/3, apex emarginate-truncate, with sparse, long yellowish-brown setae directed backward.

Male. – Ventrite 5 triangularly shaped from base to apex,apex not projected. Prosternal and mesoventral processes narrower. Antennae 1.75 times elytral length, reaching elytral apex at basal fifth of antennomere VII.

Variation. – Width of mesoventral process variable in males and females. Apex of mesoventral process variable in females: from distinctly concave to straight. Apex of mesoventral process variable in males: from distinctly projected laterally to not projected laterally.

Dimensions (mm) (holotype ♀ / paratype ♀ / paratypes ♂). – Total length, 7.40/8.00/7.45–8.35;

– Prothoracic length, 1.20/1.55/1.30–1.65;

– Anterior prothoracic width, 1.60/1.70/1.45–1.65;

– Posterior prothoracic width, 1.70/2.15/1.70–2.00;

– Maximum prothoracic width, 2.00/2.35/2.05–2.30;

– Humeral width, 2.90/3.55/2.75–3.25;

– Elytral length, 5.40/5.95/5.55–6.05.

Etymology. – We are pleased to name this species for Antonio Santos-Silva (Museu de Zoologia, Universidade de São Paulo, São Paulo, Brazil) to recognize his contributions in the study of Cerambycidae .

Remarks. – As reported above, the separation of Pseudastylopsis from Leptostylus is problematic. Even so, we chose to include the new species in Pseudastylopsis due to its general appearance being much more similar to the species of this genus.Furthermore,the width of the prosternal process of one fifth to one-sixth of the width of procoxal cavity agrees well with the original description of the genus.

Pseudastylopsis santossilvai sp. nov. is similar to P. squamosa Chemsak &Linsley, 1986 , but differs as follows: narrowest area of the prosternal process about one-fourth or less of the width of procoxal cavity; mesoventral process distinctly narrower than mesocoxal cavity; and elytra without black macula close to tubercles located after middle with dense white pubescence anteriorly and yellow pubescence apically. In P. squamosa , the narrowest area of the prosternal process is almost one-half as broad as procoxal cavity ( Chemsak & Linsley 1986), mesoventral process about as broad as mesocoxal cavity ( Chemsak & Linsley 1986), and elytra with black macula close to white pubescent area after middle (same area of the tubercles with white and yellow pubescence in the new species).

The generalappearance of P. santossilvai sp.nov. resembles Leptostylus spiculatus Bates,1880 (see photographsonBezark 2023andinMaes et al. 2010). However, the body is proportionally slender (stouter in L. spiculatus ), the black area on the posterior region of sides of the prothorax is visible dorsally (if present, not visible dorsally in L.

FAUNITAXYS - ISSN (Print): 2269 - 6016 - ISSN (Online): 2970 - 4960

6 - 7. Paratype ♂ ( JVCO). 6. Dorsal. 7. Ventral. 8 - 9 . Paratype ♀ ( JVCO).. 8. Dorsal. 9. Ventral .

spiculatus ), black posterior macula on sides of the pronotumnot aligned with the longitudinal central bands (fused and aligned in L. spiculatus ), tubercles on the posterior half of the elytra have distinct dense and large tufts of white pubescence, forming an oblique band ascending from sides tosuture (white pubescenttuftssmaller andnot forming an oblique band ascending from sides to suture in L. spiculatus ), and the apex rounded (obliquely truncate in L. spiculatus ).