Phrynidius oaxacanensis, 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 : 467-469

Phrynidius oaxacanensis sp. nov.

( Figs 36–41 )

Type material. Holotype male from MEXICO, Oaxaca: Hwy 175, 76 km NE Oaxaca, 9400’, 29.VIII.1982, C.W. & L. O’Brien & G. Wibmer leg. ( FSCA) . Paratypes — MEXICO, Oaxaca: 1 male, same data as holotype ( MZSP, formerly FSCA); 3.7 mi. S Valle Nac’l [Nacional], Hwy 175, 2 females, 27.V.1983, C.W. & L. O’Brien leg. (1, MZSP, formerly FSCA; 1, FSCA) .

Diagnosis. Phrynidius oaxacanensis sp. nov. is similar to P.pallifemoralis sp. nov. but differs by the anterocentral tubercle of the pronotum irregular (regularly convex and straight in P. pallifemoralis sp. nov.), and by the elytral tubercles distinctly more elevated and acuminate apically (less elevated and mostly rounded in P. pallifemoralis sp. nov.). It differs from P. armatus Linsley, 1933 by the body slender (stout in P. armatus ), presence of anterolateral tubercle on the pronotum (absent in P. armatus ), and by elytral tubercles distinctly more elevated and acuminate apically (less elevated and mostly rounded in P. armatus ); from P. salvadorensis salvadorensis Franz, 1954 and P. salvadorensis montecristensis Franz, 1954 , by the presence of anterolateral tubercle on the pronotum (absent in both subspecies of P. salvadorensis ).

Description. Holotype male ( Figs 36–39 ). Integument mostly black; palpomeres dark brown with yellowish-brown apex; base of pedicel, and base and apex of antennomeres III–IV dark reddish brown; antennomeres V–XI brown with reddish-brown apex.

Head. Frons abundantly, coarsely punctate; with abundant ochraceous pubescence obscuring integument on half close to clypeus, pubescence gradually slightly sparser, dark brown toward antennal tubercles; with short, decumbent, thick white setae interspersed.Antennal tubercles close to each other basally; coarsely punctate, punctures finer than on frons, except smooth apex; with dark-brown pubescence partially obscuring integument and short, decumbent, thick white setae interspersed, except glabrous smooth area. Vertex abundantly, coarsely punctate; with abundant, short brown pubescence not obscuring integument from area between antennal tubercles to anterior margin of upper eye lobes, with abundant yellowish-brown pubescence almost obscuring integument on remaining surface; with a few short, decumbent, thick white setae interspersed. Area behind eyes coarsely punctate, punctures slightly sparer toward inferior area of lower eye lobe; with dense yellowish-brown pubescence obscuring integument, and sparse, decumbent white setae interspersed. Genae coarsely punctate toward ventral surface, smooth toward clypeus; 1.9 times width of lower eye lobe; with abundant yellowish-brown pubescence obscuring integument, and short, bristly white setae interspersed. Wide central area of postclypeus with sparse white pubescence and a few long, erect yellowish-brown setae close to anteclypeus; sides of postclypeus almost glabrous. Labrum very finely punctate with a few coarser punctures interspersed; almost glabrous close to anteclypeus, with sparse yellowish-white pubescence centrally, pubescence longer and more abundant laterally, and dense fringe of yellow setae anteriorly. Eye lobes weakly divided; distance between upper eye lobes 0.52 times distance between outer margins of eyes; in frontal view, distance between lower eye lobes 0.73 times distance between outer margins of eyes; lower eye lobes longer than wide (1.45 times). Antennae 1.15 times elytral length, slightly surpassing base of posterior third of elytra. Scape somewhat abundantly and finely punctate; with abundant brown pubescence partially obscuring integument, except base and apex with abundant yellowish-white pubescence, and arched, thick, both dark brown and yellowish-white setae interspersed. Pedicel with yellowish-white pubescence, sparse on basal half, dense on apical half. Antennomere III sub-straight with pubescence and setae as on scape, but also with a few arched and thick yellowish-brown setae interspersed. Antennomere IV with yellowish-white pubescence basally and apically, pubescence dark brown on remaining surface, and arched, thick, both yellowish-white and yellowish-brown setae interspersed on basal 2/3. Antennomeres V–XI with yellowish-brown pubescence not obscuring integument, except apex with denser yellowish-white pubescence. Antennal formula (ratio) based on length of antennomere III: scape = 1.23; pedicel = 0.27; IV = 0.91; V = 0.54; VI = 0.50; VII = 0.48; VIII = 0.45; IX = 0.45; X = 0.45; XI = 0.59.

Thorax. Prothorax longer than wide; sides slightly rounded from anterolateral angles to posterior quarter, then narrowed and parallel-sided toward posterolateral angles. Pronotum moderately coarsely punctate and rugose; with five distinct gibbosities, one longitudinal, irregular, located centrally from anterior margin to apex of posterior quarter, one irregular, oblique, located on each side slightly before middle, and another more irregular located on each side slightly after middle; central area between gibbosities irregularly, longitudinally and slightly elevated; with short yellowish-brown pubescence not obscuring integument, pubescence denser and paler on posterocentral area and sides; with a few short, decumbent white setae interspersed, and decumbent yellowish-brown setae on gibbosities (yellowish-brown setae converging toward apex of gibbosities). Sides of prothorax with irregular surface, somewhat abundantly, coarsely punctate; with abundant yellowish-brown pubescence partially obscuring integument. Prosternum coarsely punctate; with abundant yellowish-white pubescence not obscuring integument, pubescence denser, yellower laterally and close to procoxal cavities. Prosternal process with sides slightly divergent from near base to wider apical area; abundantly, coarsely punctate; narrowest area 0.75 times procoxal width; with abundant whitish pubescence not obscuring integument, except glabrous sides. Mesoventrite smooth on wide central area, finely punctate laterally; with whitish pubescence not obscuring integument on wide central area, pubescence denser, yellower laterally. Mesanepisternum and mesepimeron somewhat abundantly and coarsely punctate; with abundant yellowish-brown pubescence partially obscuring integument, pubescence slightly sparser on mesepimeron. Metaventrite somewhat sparsely and finely punctate laterally, smooth centrally; with abundant yellowish-brown pubescence partially obscuring integument, except glabrous posterior half of central area, and short, decumbent, thick white setae interspersed. Mesoventral process slightly widened on posterior half; widest area 0.74 times mesocoxal width; pubescence as on prosternal process. Elytra. Subelliptical; abundantly, coarsely punctate; with elevated conical tubercles, from near base to near apex, forming longitudinal row on dorsal posterior third of each elytron; with abundant yellowish-brown pubescence almost obscuring integument throughout, and short, decumbent, thick yellowish-white setae interspersed (yellowish-white setae converging toward apex on some tubercles). Legs. Femora with abundant yellowish-brown pubescence almost obscuring integument, and short, arched, thick, mostly white setae interspersed. Tibiae with dense yellowish pubescence dorsally and laterally on base, and dorsally on apex; sides of apical area of protibiae and sides and ventral apical area of meso- and metatibiae with white pubescence not obscuring integument; protibiae with dense, bristly yellowish-brown pubescence on apical quarter of ventral surface; dorsal sulcus of mesotibiae with dense, short, erect yellowish-brown setae; apex of all tibiae with thick yellowish-brown setae; remaining surface of tibiae with abundant brownish pubescence partially obscuring integument; all tibiae with short, arched, thick, both white and yellowish-brown setae interspersed.

Abdomen. Ventrites with dense yellowish-brown pubescence laterally, especially on posterior area of ventrites 1 and 2, dense, pale longitudinal pubescent band centrally, especially on ventrites 2–4, and pale abundant pubescence not obscuring integument on remaining surface, pubescence sparser on entire posterior third of ventrite 5; with short, decumbent, thick white setae interspersed, except on posterior third of ventrite 5; ventrite 5 slightly depressed centrally.

Female ( Figs 40–41 ). Similar to male, differing especially by the shorter antennae, 1.05 times elytral length, reaching about middle of elytra; scape distinctly longer than antennomere III (1.7 times), and antennomere IV as long as III.

Variability. Antennomeres V–XI light brown with reddish apex.

Dimensions in mm (holotype male/ paratype male/ paratypes female). Total length, 8.30/7.90/9.35–9.55; prothoracic length, 2.30/2.10/2.60–2.80; anterior prothoracic width, 1.80/1.75/2.05–2.10; posterior prothoracic width, 1.75/1.70/2.05–2.10; maximum prothoracic width, 2.10/2.05/2.50–2.55; humeral width, 1.85/1.85/2.20– 2.30; elytral length, 5.75/4.95/6.10–6.20.

Etymology. The epithet “oaxacanensis” refers to the Mexican state of the type-locality of the species.

Figures

FIGURES 36–41. Phrynidius oaxacanensis sp. nov. 36–39) Holotype male: 36) Dorsal habitus; 37) Ventral habitus; 38) Lateral habitus; 39) Head, frontal view. 40–41) Paratype female: 40) Dorsal habitus; 41) Ventral habitus.