Phrynidius pallifemoralis, Noguera & Santos-Silva, 2023

Noguera, Felipe A. & Santos-Silva, Antonio, 2023, New species and records in Phrynidius Lacordaire (Coleoptera, Cerambycidae, Lamiinae), Zootaxa 5323 (4), pp. 451-476 : 464-467

Phrynidius pallifemoralis sp. nov.

( Figs 29–35 )

Type material. Holotype male from MEXICO, Oaxaca: 3.7 miles S Valle Naci’l [Nacional], Hwy 175, 27.V.1983, C.W. & L. O’Brien leg. ( FSCA) . Paratypes — MEXICO, Oaxaca: 3.7 miles S Valle Naci’l [Nacional], Hwy 175, 1 male, 27.V.1983, C.W. & L. O’Brien leg. ( MZSP, formerly FSCA) . Hidalgo: Hwy 105, 2.4 mi. N Tlanchinol, 5000’, 2 males, 3 females, 2.VIII.1982, C.W. & L. O’Brien & G. Wibmer leg. (2 males, 2 females, FSCA; 1 female, MZSP, formerly FSCA); 2 females, 8-9.V.1983, C.W. & L. O’Brien leg. ( FSCA) .

Diagnosis. Phrynidius pallifemoralis sp. nov. is similar to P. inaequalis ( Say, 1835) but differs by the antennomere III not distinctly shorter than the scape (distinctly shorter in P. inaequalis —according to Say (1835), the scape is longer than antennomere III and pedicel together). It differs from P. armatus Linsley, 1933 and P. asper Bates, 1885 , especially by the distinctly elevated central tubercle close to anterior margin of the prothorax (absent in P. armatus and P. asper ).

Description. Holotype male ( Figs 29–33 ). Integument mostly dark brown; palpi reddish brown, except yellowish apex of palpomeres; antennae dark reddish brown from posterior third of antennomere IV. Coxae and trochanters mostly dark reddish brown. Apex of tibiae and tarsi reddish brown.

Head. Frons moderately sparsely, coarsely punctate; with dense ochraceous pubescence obscuring integument, and short, decumbent, sub-squamiform white setae interspersed. Antennal tubercles moderately close to each other; with fine punctures on frontobasal area, smooth apically; pubescence and setae as on frons, except glabrous smooth area.Vertex somewhat abundantly, coarsely punctate; with abundant yellowish-brown pubescence partially obscuring integument, pubescence slightly sparser on posterocentral area of vertex, and short, decumbent, squamiform yellowish-white setae interspersed. Area behind eyes abundantly, coarsely punctate close to eyes, punctures finer, sparser close to prothorax; with abundant yellowish-brown pubescence obscuring integument close to eye, glabrous close to prothorax. Genae sparsely, coarsely punctate, except smooth apex; 2.1 times width of lower eye lobe; pubescence and setae as on frons, except glabrous smooth area. Wide central area of postclypeus with abundant yellowish-white pubescence partially obscuring integument close to frons, with sparse white pubescence and a few long, erect yellowish-brown setae close to anteclypeus. Labrum with erect, both short and long yellowish-brown setae, setae slightly more abundant laterally, and dense fringe of golden setae on anterior margin. Eye lobes not distinctly divided, separated by narrow smooth area; distance between upper eye lobes 0.38 times distance between outer margins of eyes; in frontal view, distance between lower eye lobes 0.71 times distance between outer margins of eyes; lower eye lobes longer than wide (1.85 times). Antennae 1.35 times elytral length, almost reaching posterior third of elytra. Scape with abundant brownish pubescence obscuring integument, with short, decumbent, thick yellowish-white setae interspersed, except apex with dense yellowish pubescence. Pedicel with abundant pale yellow pubescence obscuring integument.Antennomere III with abundant yellowish-white pubescence basally and apically, brownish pubescence on remaining surface, and short, decumbent, thick yellowish-white setae interspersed on wide central area. Antennomere IV with yellowish-white pubescence basally, pubescence brownish on remaining basal 2/3, yellowish white, not obscuring integument on apical third; with short, decumbent, thick yellowish-white setae interspersed on area with dark pubescence. Antennomeres V–XI with yellowish-white pubescence not obscuring integument, slightly denser toward XI. Antennal formula (ratio) based on length of antennomere III: scape = 1.20; pedicel = 0.25; IV = 0.92; V = 0.52; VI = 0.50; VII = 0.50; VIII = 0.50; IX = 0.50; X = 0.45; XI = 0.65.

Thorax. Prothorax longer than wide; sides slightly rounded, divergent from anterolateral angles to posterior third, distinctly narrowed from this point to posterior fifth, then subparallel-sided toward posterolateral angles. Pronotum somewhat sparsely, coarsely punctate; with five distinct tubercles, one centrally, carina-shaped, from anterior margin to posterior quarter, strongly convex on anterior third, distinctly less elevated on its remaining surface, one subconical, located on each side of central tubercle, slightly before middle of pronotum, another on each side of central tubercle, less elevated and closer to the central tubercle than anterolateral ones; with dense yellowish-brown pubescence obscuring integument, pubescence lighter on central area, and short, sparse, decumbent, thick yellowish setae interspersed. Sides of prothorax somewhat abundantly, coarsely punctate; with yellowish-brown pubescence obscuring integument close to pronotum, pubescence gradually, slightly sparser toward prosternum. Prosternum sparsely, coarsely punctate; with abundant yellowish-brown pubescence not obscuring integument, pubescence denser laterally. Prosternal process with sides divergent from near base to wider apical area; somewhat abundantly, coarsely punctate; narrowest area 0.42 times procoxal width; with abundant pale-yellow pubescence not obscuring integument, except glabrous sides. Mesoventrite smooth on wide central area, sparsely, finely punctate laterally; with yellowish-white pubescence on smooth area and dense yellowish-brown pubescence on punctate area. Mesanepisternum and mesepimeron with a few coarse punctures; with abundant yellowish-brown pubescence not obscuring integument, pubescence slightly sparser on mesepimeron. Metaventrite abundantly, minutely punctate, except smooth area close to metacoxal cavities; with small, deep, circular depression on each side of posterior region; with abundant yellowish-brown pubescence not obscuring integument. Mesoventral process abundantly, coarsely punctate; apex truncate, 0.52 times as wide as mesocoxa; with abundant pale yellow pubescence not obscuring integument, except glabrous sides of posterior half. Elytra. Sub-ovoid; abundantly, coarsely, deeply punctate; with elevated tubercles throughout, tubercles larger between middle and posterior quarter; with abundant yellowish-brown pubescence partially obscuring integument, pubescence slightly darker on wide central area of anterior 2/3, and short, thick, decumbent yellowish-white setae on some tubercles (setae converging toward top of the tubercle). Legs. Femora somewhat pedunculate-clavate; with dense pale yellow pubescence basally and on apical quarter of pro- and mesofemora, and apical third of metafemora; with short, decumbent, thick yellowish-white setae interspersed. Tibiae with pale yellow pubescence basally, abundant brownish pubescence not obscuring integument on remaining surface, except glabrous apical region, yellowish-brown pubescence on sides of protibiae, yellowish-white pubescence on sides of meso- and metatibiae, bristly yellowish-brown pubescence on apical third of ventral surface of protibia and apical fifth of meso- and metatibiae, dorsal sulcus of mesotibiae with short, erect, abundant yellowish-brown setae, and dense fringe of yellowish-brown setae on apical margin of all tibiae; with short, arched yellowish-white setae interspersed.

Abdomen. Ventrites with abundant yellowish-brown pubescence not obscuring integument.

Female ( Figs 34–35 ). Similar to male, differing especially by the body slightly stouter and by the shorter antennae, 1.1 times elytral length.

Variability (males and females). Coxae and trochanters mostly dark brown; frons, parts of prothorax and elytra, posterior third of femora, tibiae and tarsi orangish brown; prothorax as long as wide. General pubescence more light yellowish brown.

Dimensions in mm (holotype male/ paratypes male/ paratypes female). Total length, 7.45/6.90–7.10/7.95–9.45; prothoracic length, 2.35/2.00–2.15/2.40–2.75; anterior prothoracic width, 1.80/1.70–1.75/2.00–2.15; posterior prothoracic width, 1.85/1.70–1.80/2.00–2.25; maximum prothoracic width, 2.15/2.00–2.05/2.30–2.65; humeral width, 2.00/1.85–1.90/2.15–2.40; elytral length, 4.55/4.25–4.50/4.80–5.90.

Etymology. Latin, “palleo” (to be or look pale), “femur” (thighbone), and “-alis” (suffix, creating adjectives of relationship); allusive to the color of the pubescence on apical region of the femora, especially ventrally.

Figures

FIGURES 29–35. Phrynidius pallifemoralis sp. nov. 29–33) Holotype male: 29) Dorsal habitus; 30) Ventral habitus; 31) Lateral habitus; 32) Head, frontal view; 33) Prothorax, oblique view. 34–35) Female paratype: 34) Dorsal habitus; 35) Ventral habitus.