Perilypus arsus, 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 : 968-969

Perilypus arsus OPITZ nov.sp. ( Figs 180 , 211 , 273 )

Holotype: ♂. Type locality: Costa Rica, Puntarenas Prov., San Luis Rd. , 6 mi. E to Guacimal. A second label reads: ca. 700 m, 27-VI-1997, J. Rifkind, H. Lezama, colls. ( CSCA) . Paratypes: 3 specimens. Costa Rica: Provincia de Puntarenas, San Luis Road, 6 miles E Junction with Road to Guacimal ( JNRC, 1) ; San Luis , Ecolodge S Luis, 17-VI-1997, beating, 1100 m, J. Rifkind, H. Lezama ( JNRC, 1; WOPC, 1) .

D i a g n o s i s: The genus Perilypus SPINOLA was revised in 1977 (EKIS 1977). This work included a key to species. The available Perilypus arsus specimens keys out to P. cultratus EKIS, from which Perilypus arsus specimens differ by showing significantly narrower phallobasic lobes.

D e s c r i p t i o n: Size: Length 7.0 mm; width 2.0 mm. Form: As in Fig. 273 . Color: Cranium flavotestaceous; antenna black; pronotum bicolorous, mostly flavotestaceous, collar black; pterothorax black except mesosternum yellow; elytra black, with faintly visible bluish tinge. Head: Interocular depression moderately deep, crescentic; frontal umbo prominent; cranium minutely punctate; antenna moderately serrate, not densely setose, antennomeres gradually increasing in diameter from scape to antennomere 11; eyes finely facetted, eye narrower than frons (EW/FW 28/45). Thorax: Pronotum transverse ( Fig. 180 ), very finely punctate; pronotal arch well defined; subapical depression well defined; side margins of pronotum proper strongly arcuate (PW/PL 100/93); elytra oblong rectangulate, pubescence short and profusely distributed throughout disc; disc punctures small and profusely distributed on disc, epipleural fold plane (EL/EW 305/75). Abdomen: Pygidium transverse / scutiform; aedeagus as in Fig. 211 .

Variation: The paratypes are more melanistic that the holotype. Each elytron may have a yellow line and the pronotal disc may show a centrally located broad black marking. In one paratype, the elytral discal line is only faintly visible.

N a t u r a l H i s t o r y: The available specimens were collected during June, by beating, at altitudes that ranges from 700-1100.

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: Thetrivialname, arsus, is a Latin adjective from ardo (= glow); in reference to the bluish tinge on the elytral disc.

Figures

Figs 179-193: Pronota; 179) Phonius versus; (180) Perilypus arsus; (181) A. nodus; (182) Pyticara frontegalba; (183) Pelonium implacide; (184) Neorthoplera quintana; (185) Perilypus virgulatus; (186) P. alpinus; (187) Amboakis expandosa; (188) Ampleris jatai; (189) Megaphloeus jasuni; (190) Amboakis bermejo (191) Madoniella delta; (192) Megaphloeus imparilus; (193) Pyticeroides brevitubulus.

Figs 207-212: Aedeagi; (207) Aphelocerus tigra; (208) A. yoro; (209) Perilypus alpinus; (210) P. apunctus; (211) P. arsus; (212) P. izabal.

Figs 270-273: Habitus; (270) Aphelocerus yoro; (271) Perilypus alpinus; (272) P. apunctus; (273) P. arsus.