Plistonax antonkozlovi Santos-Silva, Nascimento & Silva Júnior, 2020

Silva Júnior, José O., Haseyama, Kirstern L. F. & Souza, Diego de S., 2021, Phylogenetic approach redefines Plistonax (Coleoptera, Cerambycidae, Lamiinae) with new combinations and a new genus of flat-faced long-horned beetles, Organisms Diversity & Evolution (New York, N. Y.) 21 (2), pp. 491-520 : 507-508

Plistonax antonkozlovi Santos-Silva, Nascimento & Silva Júnior, 2020 ( Fig. 10d )

Plistonax antonkozlovi Santos-Silva et al. (2020b): 547 , figs. 17–24.

Type locality: holotype (male) – Panama, Ngöbe-Buglé, La Verrugosa, Fortuna Cabins ( MZSP) ( Fig. 10d ) .

Diagnosis. Elytron with median-basal crest straight, short, occupying about 1/4 elytral surface ( Fig. 1e ); elytral punctures with two types of semierect setae inserted internally: one dark-brown and very slim, and one white more thick ( Fig. 10d ).

Fig. 12 Thoracic structures of a b

Plistonax albolinitus : a prothorax

(posterior view). b Mesothorax parts (dorsal view). c Pterothorax

(dorsal view). d Metendosternite (dorsal view). e Hind wing (dorsal view). 1A, 1st anal; 2A, 2nd anal; AM, anterior media; arc, arcule;

AS, anterior sector; C, costa; Cu,

cubitus; E, empulsal; Ju, jugal;

La, lateral arm; Lam, lamina; M,

media; m-s, media-sector; Mscc,

mesocoxal cavity; Mscu,

mesoscutum; Mse, d

mesendosternite; P, plical; PM,

posterior media; Pre, prendosternite; R, radial; r-s,

radio-sector; S, sector; Sc,

subcosta; Scu, scutellum; Sp,

stridulatory plate; Stk, stalk; Ten,

tendon. Scale bars: 1 mm

Mesoventral process with antero-lateral tubercles very elevat- ed ( Fig. 2d ).

Distribution. Panama [Ngöbe-Buglé] (Fig. S4a).

Remarks. This recently described species has some unique features in Plistonax ( Santos-Silva et al. 2020b) . The internal semierect setae in the elytral punctures are dimorphic only in this species and a single specimen of P. rafaeli . However, in the latter species, there is dimorphism only in coloration, not in shape. P. antonkozlovi shares with P. albolinitus , P. inopinatus , and P. senecauxi the elytral apex rounded and males with tubercles on the inner surface of antennomeres. Together with P. ariasi , this is the only species of Plistonax recorded from Central America.

Figures

Fig. 10 Holotypes of some species of Plistonax: a Plistonax multipunctatus Thomson, 1864 (=P. albolinitus). b Plistonax albituberculatus Silva Júnior & Souza, 2019. c Acanthoderes albolinitus Bates, 1861 (=P. albolinitus). d Plistonax antonkozlovi Santos-Silva, Nascimento & Silva Júnior, 2020. e Acanthoderes ariasi Chemsak & Hovore, 2002 (=P. ariasi comb. nov.). f Acanthoderes bialbomaculata Zajciw, 1964 (=P. bialbomaculatus). g P. senecauxi

Fig. 1 Character illustrations: a 1:0 male’s gena with margin curved (anterior view, Plistonax inopinatus). b 1:1 male’s gena with margin straight (anterior view, Aegomorphus jaspideus). c 3:0 scape slightly expanded to the mid-region (dorsal view, Ateralphus dejeani). d 3:1 scape strongly expanded in the mid-region (dorsal view, P. inopinatus). e 25:0 elytron with median-basal crest reaching no more than the half and 26:0 median-basal crest with anterior region straight (dorsal view, P. albituberculatus). f 25:1 elytron with median-basal crest reaching beyond the half and 26:1 median-basal crest with anterior region curved (dorsal view, P. inopinatus). g 19:0 prosternal process with lateral margin concave (ventral view, Steirastoma breve). h 19:1 prosternal process with lateral margin straight (ventral view, P. rafaeli). i 19:2 prosternal process with lateral margin convex (ventral view, P. inopinatus). Red arrows highlight the character states 1:0 and 1:1. Mbc, median-basal crest. Scale bars: 1 mm

Fig. 2 Character photographs: a 2:0 frons with small punctures (anterior view, Aegomorphus jaspideus). b 2:1 frons with large punctures (anterior view, A. travassosi). c 21:0 mesoventral process with antero-lateral tuber- cles slightly elevated (lateral view, Plistonax albolinitus). d 21:1 mesoventral process with antero-lateral tubercles very ele- vated (lateral view, Acanthoderes (Acanthoderes) daviesii). e 4:1 male’s antennomeres VI–XI with tubercles in the inner surface and 11:1 male’s antennomeres IX–XI with black setae in the inner sur- face (lateral view, male of P. albolinitus). f 6:1 antennomere III with darker stain near apex, 7:1 antennomere III with darker stain near base, 8:1 antennomere IV with darker stain near base, 9:0 antennomeres IV–XI with darker stain near apex in subapical posi- tion, and 10:1 antennomeres III– VII with erect setae in the inner surface (dorsal view, P. rafaeli). g 9:1 antennomeres IV–XI with darker stain near apex in apical position (dorsal view, P. insolitus). White dashed lines highlight the character states 2:0 and 2:1; blue arrows highlight the character states 6:1, 7:1, 8:1, 9:0, and 9:1; red arrows highlight the character state 10:1. Scale bars: 1 mm