Phrynidius guisayotensis Noguera, Anderson & Santos-Silva, 2025

Noguera, Felipe A., Anderson, Robert & Santos-Silva, Antonio, 2025, Synopsis of Phrynidius Lacordaire (Coleoptera, Cerambycidae, Lamiinae, Apomecynini): description of new species, new records, checklist and updated key to species, Zootaxa 5686 (3), pp. 301-338 : 327-330

Phrynidius guisayotensis Noguera, Anderson & Santos-Silva , sp. nov.

( Figs 81–89 )

Dimensions in mm (female holotype /female paratype). Total length, 7.65/6.00; prothoracic length, 2.15/1.60; anterior prothoracic width, 1.85/1.35; posterior prothoracic width, 1.85/1.40; maximum prothoracic width, 2.15/1.60; humeral width, 2.00/1.60; elytral length, 4.80/3.90.

Description. Female holotype. Integument mostly dark brown; apex of palpomeres yellowish; apical third of antennomere IV and entire surface of V–XI brown (lighter depending on light intensity); anteclypeus mostly dark yellowish brown; labrum with transverse yellowish-brown band on anterior quarter.

Head. Frons slightly convex, moderately abundantly, deeply, coarsely punctate; with dense pale yellowish-brown pubescence, pubescence lighter close to base of antennal tubercles; with short, arched, squamiform yellowish-white setae interspersed. Vertex with sculpturing as on frons; with dense yellowish-brown pubescence not obscuring punctures and partially not obscuring median groove, and a few short, squamiform, arched yellowish-white setae interspersed. Antennal tubercles moderately close to each other ( Fig. 81 ), distance between apices almost twice basal diameter of antennomere III; with dense light yellowish-brown pubescence, with abundant, minute yellowish-white setae interspersed, and arched, squamiform yellowish-white setae interspersed, squamiform setae more abundant than on frons. Area behind eyes sparsely, coarsely punctate; with dense pale yellowish-brown pubescence and a few short, arched, squamiform yellowish-white setae interspersed. Genae 1.95 times longer than lower eye lobe; sparsely, coarsely punctate on superior half, punctures indistinct on inferior half; with dense pale yellowish-brown pubescence, except glabrous apex; with short, squamiform, arched yellowish-brown setae interspersed. Wide central area of postclypeus with abundant pale yellowish-brown pubescence almost obscuring integument close to frons, except glabrous central area, with short whitish setae interspersed; area close to anteclypeus with moderately abundant whitish pubescence not obscuring integument, and long, erect yellowish-brown setae interspersed. Sides of postclypeus glabrous. Labrum with sparse yellowish-white pubescence except anterior margin with fringe of dense yellowish-brown setae, and long, erect yellowish-brown setae interspersed on posterior half, some erect setae dark brown basally. Distance between upper eye lobes 0.58 times distance between outer margins of eyes; in frontal view, distance between lower eye lobes 0.78 times distance between outer margins of eyes; upper eye lobe oblique in relation to the axis of lower eye lobe; eye lobes not well separated, area between eye lobes without ommatidia ( Fig. 89 ). Antennae 1.25 times elytral length, almost reaching posterior third of elytra. Scape with abundant yellowish-white pubescence basally, and abundant yellowish pubescence apically, apical pubescence denser dorsally and laterally; remaining surface with dense brown pubescence (partially lost); with short, squamiform, arched yellowish-white setae and slender, arched dark-brown setae interspersed. Pedicel glabrous on basal half, with abundant yellowish pubescence on apical half. Antennomere III with dense yellowish pubescence basally and apically, and dense brown pubescence on remaining surface; with short, squamiform, arched yellowish-white setae and slender, arched dark-brown setae interspersed. Antennomere IV ( Fig. 88 ) with abundant yellowish pubescence basally; remaining basal 2/3 with dense brown pubescence and short, squamiform, arched yellowish-white setae and slender, arched dark-brown setae interspersed; apical third with abundant yellowish-white pubescence not obscuring integument; outer side of apical region not flattened or depressed but with yellowish-white pubescence more abundant than on remaining apical third. Antennomeres V–X and basal 2/3 of XI with abundant yellowish-white pubescence not obscuring integument; apical third of XI with dense yellowish-white pubescence; with short, erect yellowish-white setae interspersed. Antennal formula (ratio) based on length of antennomere III: scape = 1.35; pedicel = 0.21; IV = 0.79; V = 0.49; VI = 0.44; VII = 0.42; VIII = 0.39; IX = 0.42; X = 0.42; XI = 0.53.

Thorax. Prothorax as long as wide; sides rounded from anterolateral angles to posterior fifth, then subparallel-sided. Pronotum with three moderately elevated tubercles, one on each side about middle, subcircular with blunt apex, another elongate, located centrally from near anterior margin to about posterior third, slight concave dorsally on anterior half; surface somewhat rugose; moderately sparsely, coarsely punctate; with dense pale yellowish-brown pubescence on irregular areas, pubescence sparser between dense pubescent areas; with a few short, squamiform, arched yellowish-white setae interspersed. Sides of prothorax with punctures, pubescence, and squamiform setae as on pronotum. Prosternum with yellowish-white pubescence not obscuring integument, pubescence denser laterally and close to procoxal cavities, distinctly sparser on remaining surface. Prosternal process with abundant yellowish-white pubescence not obscuring integument; narrowest area 0.42 times procoxal width. Mesoventrite with abundant yellowish-white pubescence not obscuring integument centrally and dense yellowish pubescence laterally. Mesanepisterna and mesepimera with abundant pale yellowish-brown pubescence partially obscuring integument. Mesoventral process 0.6 times mesocoxal width. Metaventrite with dense pale yellowish-brown pubescence laterally, slightly sparser centrally, and absent close to metacoxal cavities; with short, squamiform, arched yellowish-white setae interspersed. Scutellum with its exposed region widely triangular; with abundant yellowish pubescence not obscuring integument centrally, glabrous laterally. Elytra. Ovoid, with epipleural margin almost straight from base to apex; anterior 2/3 of dorsal surface with large, moderately elevated tubercles not aligned with blunt apex; each elytron with large, elevated, conical tubercle on beginning of posterior third of dorsal surface ( Fig. 85 ); remaining posterior third with small tubercles not aligned; moderately abundantly, coarsely punctate throughout; with dense pale yellowish-brown pubescence partially obscuring integument on some areas, sparser on others; with short, squamiform, arched yellowish-white setae interspersed. Legs. Femora slightly concave near apex of ventral surface; with dense brown pubescence except apex with dense yellowish-white pubescence; with short, squamiform, arched yellowish-white setae interspersed. Tibiae with dense brown pubescence, except dense yellowish-white pubescence basally on dorsal and lateral surfaces, apex with moderately abundant whitish pubescence not obscuring integument dorsally and laterally on protibiae and near apex of meso- and metatibiae, whitish pubescence absent on apical region of dorsal surface, apical third of ventral surface of protibiae mostly with dense, bristly yellowish-brown pubescence, apical area of meso- and metatibiae with bristly yellowish-brown pubescence, and dorsal sulcus of mesotibiae with fringe of erect yellowish-brown setae. Dorsal surface of tarsomeres with abundant whitish pubescence not obscuring integument, except glabrous central region of tarsomeres I–II; central apex of tarsomeres I–II with a few short whitish setae directed backward.

Abdomen. Ventrites with dense pale yellowish-brown pubescence laterally, less dense centrally on ventrites 1–4, except sides of intercoxal process, central apex of ventrite 1, and central area near apex of ventrite 5 with whitish pubescence not obscuring integument, and apex of ventrite 5 with very sparse whitish pubescence.

Male. Unknown.

Etymology. The epithet “ guisayotensis ” refers to the El Guisayote Biological Reserve, the area where the paratype was collected.

Type material. Female holotype from HONDURAS, Ocotepeque: El Portillo , 7.X.1993, R. Turnbow leg. ( FSCA, formerly RHTC). Female paratype from HONDURAS, Ocotepeque: R. B. Guisayote [Reserva Biologica El Guisayote], 22.V.1995, R. Turnbow leg. ( RHTC) .

Remarks. Phrynidius guisayotensis is similar to P. pallifemoralis ( Figs 102–105 ), but differs as follows (females): scape proportionally longer ( Fig 81 ), distinctly longer than genal length; pronotal tubercles less elevated ( Fig. 84 ); and dorsal tubercles on posterior third of elytra larger and more elevated ( Figs 81, 83, 84 ). In P. pallifemoralis , the scape is shorter, slightly longer than genal length, pronotal tubercles are more elevated, especially the anterolateral ones, and the dorsal tubercles on the posterior third of elytra are smaller and less elevated. It differs from P. tigranensis ( Figs 1–7 ) and P. murallaensis ( Figs 35–47 ), especially by the dorsal surface of the posterior third of elytra with a large tubercle ( Fig. 84 ) (distinctly smaller in P. tigranensis and P. murallaensis ). Phrynidius guisayotensis differs from P. armatus (see photographs on Bezark (2025) and in Gutiérrez et al. (2020)), by the pronotal tubercles less elevated (more elevated in P. armatus ), and the dorsal surface of the posterior third of elytra with a large tubercle (smaller in P. armatus ). Phrynidius guisayotensis is also similar to P. cristinae (see photographs on Bezark (2025) and in Gutiérrez et al. (2020)), but differs by the distance between the apices of the antennal tubercles almost twice the basal diameter of the antennomere III (slightly wider than the basal diameter of the antennomere III in P. cristinae ), antennomere III shorter than scape (as long as scape in P. cristinae ), and the dorsal surface of the posterior third of elytra with large tubercle (distinctly smaller in P. cristinae ).

Figures

FIGURES 81–89. Phrynidius guisayotensis, holotype female: 81) Dorsal habitus; 82) Ventral habitus; 83) Lateral habitus; 84) Latero-oblique habitus; 85) Fronto-oblique habitus; 86) Head and scape, oblique view; 87) Head, frontal view; 88) Antennomere IV, dorso-oblique view; 89) Eye lobes.

FIGURES 102–105. Phrynidius pallifemoralis, paratype female: 102) Lateral habitus; 103) Latero-oblique habitus; 104) Fronto-oblique habitus; 105) Head, scape, and pronotum.

FIGURES 1–7. Phrynidius tigranensis, holotype female: 1) Dorsal habitus; 2) Ventral habitus; 3) Lateral habitus; 4) Laterooblique habitus; 5) Antennomeres III–IV; 6) Head, frontal view; 7) Eye lobes.

FIGURES 35–41. Phrynidius murallaensis, holotype male: 35) Dorsal habitus; 36) Ventral habitus; 37) Lateral habitus; 38) Latero-oblique habitus; 39) Antennomeres III–IV; 40) Apex of protibia; 41) Apex of mesotibia.

FIGURES 42–47. Phrynidius murallaensis. 42–44) Holotype male: 42) Head, frontal view; 43) Scutellum; 44) Eye lobes. 45–47) Paratype female: 45) Apex of protibia; 46) Apex of mesotibia; 47) Dorsal habitus.