Alurnus batesii Baly 1864

Staines, C. L., 2013, A review of the genus Alurnus Fabricius, 1775 (Coleoptera: Chrysomelidae: Cassidinae), Insecta Mundi 2013 (291), pp. 1-34 : 5-6

Alurnus batesii Baly 1864

( Figure 1)

Alurnus batesii Baly 1864: 334 [holotype: Brazil, Ega (BMNH)]. Baly 1869: 367 (noted); Waterhouse 1881: 264 (distribution); Weise 1910: 103 (key), 1911a: 12 (catalog), 1911b: 19 (catalog); Fischer 1935: 266 (revision); Uhmann 1957a: 36 (catalog); Staines and Staines 1999: 522 (Baly species list).

Alurnus batesi Baly. Gemminger and Harold 1876: 3605 (lapsus calami, catalog); Donckier 1899: 557 (catalog); Jacobson 1899: 251 (revision); Blackwelder 1946: 721 (faunal list); Guérin 1953: 99 (faunal list); Papp 1953: 31 (catalog).

Alurnus batesi triangularis Jacobson 1899: 251 [type: Ecuador?, depository unknown]. Weise 1911a: 13 (catalog), 1911b: 19 (catalog); Fischer 1935: 266 (revision); Blackwelder 1946: 721 (faunal list); Papp 1953: 31 (catalog).

Description. Head, antennae, scutellum, and legs black; pronotum red; elytra yellow, usually with three black spots- 1 oblong behind scutellum; 2 large, irregularly shaped postmedially on disc; 3 on humerus (absent on some specimens). Head: vertex punctate, rounded, without sulcus; large rugose punctures present laterally behind eye; front and clypeus punctate; clypeus with fringe of setae apically. Antenna: antennomere 1 transverse, longer than 2; 2 transverse, short, narrower than 1; 3 cylindrical, more than 2x length of 1 and 2 combined; 4 0.5x length of 3, widens apically; 5-10 decreasing in length; 11 longer than 10, pointed at apex; sparsely punctate, each puncture with pale seta. Pronotum: lateral margin arcuate from base to just beyond middle then strongly rounded to anterior angle; anterior angle with smooth obtuse tooth; posterior angle oblique; surface irregularly punctate, with punctures more dense laterally and basally; slight transverse basal impression present; glabrous; pronotal length 4.0 mm; pronotal width 5.0-6.0 mm. Scutellum: cordate; punctate. Elytron: humerus produced, slightly rounded; lateral and apical margins smooth, slightly explanate; suture angle with small tooth; apex slightly notched; with slight costa from humerus obliquely to just beyond middle; elytral width 10.0- 10.5 mm; elytral length 18-19 mm. Leg: punctate, each puncture with pale seta. Venter: pro-, meso-, and metasterna punctate medially, rugose laterally; abdominal sterna punctate, each puncture with pale seta; first sternite pustulate in middle at base; all sterna slightly rugose laterally. Total length: 22-25 mm.

Larval host plant. Unknown.

Distribution. Brazil, Ecuador, Peru.

Specimens examined. Brazil. Amazonas: no further data ( USNM, 2), x.1945 ( AMNH, 1) ; São Paulo ( USNM, 1, PSUC, 1) ; Ega ( BMNH, 1) ; São Paulo de Olivença, Rio Selimões ( NMW, 1) . Ecuador. No further data ( BMNH, 2). Morona Santiago: Mangoissa R., 650 m, 1940 ( BMNH, 1). Pastaza: Sarayacu ( BMNH, 1) . Peru. Condorcanqui: Rio Santiago, 25.vi.1928 ( AMNH, 1). Cusco: km 165 on Cosñipata Hwy., Cosñipata, 13.x-25.xi.1981 ( FMNH, 3). Loreto: Iquitos ( USNM, 1), 11.xi.1993 ( USNM, 1). Total : 17 .