Pelonium atrigonatium, Opitz, Weston, 2019

Opitz, Weston, 2019, Descriptions of new genera and new species of Western Hemisphere checkered beetles (Coleoptera, Cleroidea, Cleridae), Linzer biologische Beiträge 51 (2), pp. 959-1076 : 1008-1009

Pelonium atrigonatium OPITZ nov.sp. ( Figs 98 , 154 , 260 , 360 )

Holotype: ♂. Type locality: COSTA RICA: Osa Peninsula , prov. Puntarenas, N 08°24.273' W 083°20. 265', Host: 13. Tachigall tessmannaii Copa, 29-XII-2013 - 4-I-2014, Coll. Morillo. Lopez & Berkov. A second label reads: CR 69, Weevil 69 ( FSCA) . Paratype: One specimen. Same label information as the holotype ( WOPC, 1).

D i a g n o s i s: The genus Pelonium SPINOLA was revised in 2018 ( OPITZ 2018b). This work included a key to species groups and species. The available specimens of Pelonium atrigonatium key out to P. nigroclavatum CHEVROLAT from which P. atrigonatium specimens are distinguished by showing elytral asetiferous punctures that nearly extend to the elytral apex, black distal marking on the femora, and more oblong pronotum.

D e s c r i p t i o n: Size: Length 9.0 mm; width 3.0 mm. Form: As in Fig. 360 . Color: Cranium and pronotum castaneous; antennal capitulum, prothoracic venter and pterothorax black; antennal fundus testaceous; elytra bicolorous, mostly yellow, with 3 seta of small black markings, 3 on/near humeral angle, 3 at elytral middle, 2 near elytral apex; legs bicolorous, mostly yellow, distal limits of femora and basal limits of tibiae black; abdomen yellow. Head: Cranium coarsely punctate; antenna ( Fig. 98 ) capitate, funicular antennomeres shorter towards capitulum, capitular antennomeres 9 and 10 triangular and slightly angular in anterodistal region, antennomere 11 ovoid; eyes large, coarsely facetted, eye wider than frons (EW/FW 42/31). Thorax: Pronotum ( Fig. 154 ) oblong (PW/PL 120/155), disc coarsely punctate, lateral tubercles well developed; elytra sculptured with 11 striae of large asetiferous punctures that best defined in elytral basal 1/3 rd, punctures obsolete near posterior region sutural margin, punctures end very near elytral ape (EL/EW 390/95). Abdomen: Pygidium scutiform; aedeagus as in Fig. 260.

N a t u r a l H i s t o r y: The 2 available specimens were collected during December.

D i s t r i b u t i o n: This species is known from Costa Rica.

E t y m o l o g y: The trivial name, atrigonatium, is a compound Latin/Greek name

that stems from the Latin atri (= black) and the Greek gonatium (= knees); with reference to the black coloration on the distal region of the femora.

Figures

Figs 92-100: Antennae; (92) Pyticeroides desodes; (93) Ichnea cerinis; (94) Agnatis vaurieae; (95) Ampleris amazon; (96) Nepsudia guenda; (97) Isoparis cassidilis; (98) Pelonium atrigonatium; (99) Aphelocerus yaguare; (100) Madoniella selvanegra.

Figs 153-162: Pronota; (153) Agnatis vaurieae; (154) Pelonium atrigonatium; (155) Pujoliclerus variolus; (156) Epiphloeus prolixicornus; (157) Sirpa latiflava; (158) Neorthopleura turnbowi; (159) Aphelocerus yaguare; (160) A. copanus; (161) Amboakis mitaraka; (162) Ellipotoma makrosa.

Figs 255-261: Aedeagi; (255) Pujoliclerus tuxtlas; (256) Sicamus suprus; (257) Sirpa acara; (258) Sirpa latiflava; (259) Topainca pachacutii; (260) Pelonium atrigonatium; (261) Ordinis taxis.

Figs 358-361: Habitus; (358) Alariuscareoritus; (359) Ordinistaxis; (360) Peloniumatrigonatium; (361) Cregyaentrerios.