Oxychalepus proximus ( Guérin-Méneville 1844 )

Staines, C. L., 2010, A review of the genus Oxychalepus Uhmann, 1937 (Coleoptera: Chrysomelidae: Cassidinae), Zootaxa 2573 (1), pp. 35-56 : 52-53

Oxychalepus proximus ( Guérin-Méneville 1844)

( Figure 14 )

Odontota proxima Guérin-Méneville 1844: 273 [type: Brazil, type depository unknown]; Chapuis 1877:18 (note); Uhmann 1965: 257 (types), 1966: 272 (types).

Chalepus proximus (Guérin-Méneville) . Gemminger & Harold 1876: 3614 (catalog); Donckier 1899: 591 (catalog); Blackwelder 1946: 727 (faunal list); Guérin 1953: 101 (faunal list).

Chalepus (Xenochalepus) proximus (Guérin-Méneville) . Weise 1911a: 49 (note), 1911b: 28 (catalog), 1911c: 39 (catalog).

Oxychalepus proximus (Guérin-Méneville) . Uhmann 1937b: 467 (types), 1938b: 438 (redescription), 1940b: 143 (types), 1957a: 109 (catalog), 1957b: 2 (faunal list), 1964b: 423 (catalog); Papp 1953: 85 (catalog); Buck 1958: 148 (museum list); Ramos 1998: 314 ( Brazil species).

Chalepus (Xenochalepus) proximus biinterrupta Pic 1932: 18 [Syntypes: Brazil, Jatahy (MNHN)].

Chalepus proximus biinterrupta Pic. Blackwelder 1946: 727 (faunal list).

Oxychalepus proximus biinterrupta (Pic) . Papp 1953: 85 (catalog); Uhmann 1957a: 109 (catalog), 1964b: 423 (catalog); Descarpentries & Villiers 1959: 149 (types).

Description. Head, antennae, scutellum, and legs black; pronotum yellowish with 3 black stripes; elytra with black anchor-shaped marking; black ventral markings variable. Head: vertex trisulcate; frontal carina straight; clypeus with irregular elevations. Antenna: antennomere 1 subglobose, twice length of 2; 2 transverse; 3–5 cylindrical, sulcate, 3–4 subequal in length, 5 shorter; 6–10 transverse, subequal in length; 11 pointed at apex; 1–7 punctate, glabrous; 8–11 setose. Pronotum: lateral margin bisinuate, converging to apex; anterior angle with tooth; basal impression distinct; surface punctate, punctures less visible on disc; microsculpture present between punctures, less visible in basal impression; pronotal length 1.1–1.3 mm (n=20); pronotal width 1.9– 2.0 mm. Scutellum: subcordate; alutaceous. Elytron: lateral margin finely dentate basally, more strongly dentate apically; apical margin subrectangular, exterior apical angle with long spine; apical margin with small tooth, and tooth at end of costa 1; 10 rows of punctures, scutellar row absent; costae 1 and 2 united at apex; elytral length 6.7–8.0 mm; elytral width 2.7–2.9 mm. Leg: femur and tibia punctate; protibia of male with large tooth, metatibia enlarged apically. Total length: 8.0–10.0 mm.

Remarks. This species can be distinguished by the elytra without a scutellar row and with costae 1 and 2 united near the apex; the vertex of the head is trisulcate; antennomere 1 is subglobose while 2 is transverse; and the lateral margin of the pronotum is bisinuate.

Host plant. Unknown.

Distribution. Bolivia, Brazil, and Paraguay.

Specimens examined. Bolivia. Piedra Blanca ( CMNH) ; Beni: Cachuela Esperanza, iii ( USNM) . Del Sara ( CMNH) . North Yungas : La Paz Vagante, 1100 m, 29.iv.2006 ( BYUC) . Brazil. No further data ( INSB) ; Corumba ( CMNH, DEI) ; Santarem , v.1919 ( CMNH) . Goyaz : Jatahy ( DEI) . Matto Grosso: 1886 ( USNM) . Santa Catherina: Nova Teutonia ( DEI) . Paraguay. Alto Parana: Puerto Bertoni, 1908 ( USNM) . Guairá: Villarrica ( USNM) . Total : 26 .

Figures

FIGURES 9–14. Habitus of Oxychalepus species. 9. Oxychalepus insignitus. 10. Oxychalepus normalis. 11. Oxychalepus opacicollis. 12. Oxychalepus paranormalis. 13. Oxychalepus posticatus. 14. Oxychalepus proximus.