Alurnus elysianus Thomson 1856

Staines, C. L., 2013, A review of the genus Alurnus Fabricius, 1775 (Coleoptera: Chrysomelidae: Cassidinae), Insecta Mundi 2013 (291), pp. 1-34 : 12

Alurnus elysianus Thomson 1856

( Figure 10)

Alurnus elysianus Thomson 1856: 481 [type: Amazonas, depository unknown]. Baly 1858: 30 (redescription); Gemminger and Harold 1876: 3605 (catalog); Donckier 1899: 558 (catalog); Jacobson 1899: 249 (revision); Weise 1910: 103 (key), 1911a: 13 (catalog), 1911b: 19 (catalog); Fischer 1935: 273; Günther 1940: 467 (noted); Blackwelder 1946: 721 (faunal list); Guérin 1953: 99 (faunal list); Papp 1953: 32 (catalog); Uhmann 1957a: 37 (catalog), 1964: 407 (catalog); Haitlinger 1989: 284 (parasites); Santiago-Blay and Fain 1994: 409 (mites).

Alurnus lydiae Uhmann 1928: 289 [type: Brazil, Teffé, Amazonas (DEI)]. Uhmann 1932b: 265 (synonymy); Gaedike and Döbler 1971: 353 (types); Staines 1997: 412 (Uhmann species list).

Description. Head, antennae, pronotum, scutellum, venter, and legs dark metallic blue; elytra yellow with apical quarter dark metallic blue. Head: vertex densely, finely punctate, medial sulcus present, inner margin of each eye with ocular sulcus and setae; front punctate; clypeus punctate, with long pale seta in each puncture. Antenna: antennomere 1 subglobose, subequal in length to 2; 2 cylindrical; 3 length 1.5x length of 4; 4-10 cylindrical, decreasing in length; 11 longer than 10, bluntly rounded at apex; 1-10 punctate, each puncture with pale seta; 11 more densely punctate, each puncture with pale seta. Pronotum: lateral margin evenly arcuate, slightly margined; anterior angle acute; posterior angle angulate; surface densely, finely punctate; disc with narrow longitudinal impunctate band; basal impression absent; glabrous; pronotal length 4-5 mm; pronotal width 5-6 mm. Scutellum: cordate, large; finely punctate. Elytron: lateral margin smooth, slightly explanate; apex rounded; sutural angle without tooth; humerus prominent, rounded; interspace 6 faintly costate, obliquely directed from humerus inward; surface finely punctate; elytral length 17-19 mm; elytral width 9-12 mm. Leg: punctate, each puncture with pale seta; tibia with fringe of setae on inner apical margin. Venter: pro-, meso-, and metasterna punctate; abdominal sterna 1-4 sparsely punctate, each puncture with pale seta, postulate laterally; sternite 5 more densely punctate, each puncture with pale seta. Total length: 21.5-25.0 mm.

Larval host plant. Unknown.

Distribution. Brazil, Guyana.

Specimens examined. No data ( BMNH, 1). Brazil. Amazonas: no further data ( BMNH, 4; PSUC, 1) ; Teffé, Ega ( MZSP, 1; BMNH, 5; PSUC, 1, NMW, 1), iv.1878 to 1.1879 ( USNM, 4) ; 3.?.1878 ( USNM, 1), no date ( MHMB, 1), xi.1924 ( AMNH, 6), xi.1928 ( AMNH, 1), iii.1925 ( AMNH, 1), x.1924 ( AMNH, 3), i.1925 ( AMNH, 2), xi.1924 ( EMEC, 1), 1879 ( ZIN, 1). Pará : no further data ( BMNH, 1). Guyana. No further data ( PSUC, 1). Total: 39 .