Alurnus horni Uhmann 1935

Staines, C. L., 2013, A review of the genus Alurnus Fabricius, 1775 (Coleoptera: Chrysomelidae: Cassidinae), Insecta Mundi 2013 (291), pp. 1-34 : 13-14

Alurnus horni Uhmann 1935

( Figure 12)

Alurnus tricolor Uhmann (not Olivier) 1927: 134 [holotype: Ecuador (DEI)]. Gaedike and Döbler 1971: 361 (types); Staines 1997: 412 (Uhmann species list).

Alurnus horni Uhmann 1935: 90 [replacement name for Alurnus tricolor Uhmann ]. Fischer 1935: 268 (revision); Blackwelder 1946: 721 (faunal list); Papp 1953: 32 (catalog); Uhmann 1957a: 38 (catalog); Staines 1997: 412 (Uhmann species list).

Description. Head, antennae, pronotum, scutellum, venter, and legs black; elytra yellow with large blue-red spot on apical half. Head: vertex punctate, depressed between eyes, with two small tubercles present between eyes, with tuft of setae near each eye; front sparsely punctate; clypeus punctate, each puncture with pale seta. Antenna: antennomere 1 subglobose, longer than 2; 2 subtransverse, narrower than 1; 3 cylindrical, more than 2x length of 4; 4-5 cylindrical, subequal in length, each subequal to 1 and 2 combined; 6-10 cylindrical, decreasing in length; 11 longer than 10, pointed at apex; 1-8 sparsely punctate, each puncture with pale seta; 9-11 more densely punctate, each puncture with pale seta. Pronotum: lateral margin sinuate; anterior angle slightly rounded; posterior angle acute; transversely rugose; punctate; basal impression absent; surface with gray setae; pronotal length 5 mm; pronotal width 6 mm. Scutellum: cordate; punctate. Elytron: lateral and apical margins slightly explanate, smooth; sutural angle with small tooth; humerus well defined; with five costae, 1 beginning at base near scutellum, then slanting obliquely to suture where it unites with first puncture row and continuing to apex; 2 slightly oblique, continues until apical quarter; 3 beginning in front of humerus then obliquely slanting to middle, then straight and becoming obsolete just past middle; 4 weak, starting at humerus then slanting obliquely toward suture, continuing to past middle; 5 beginning at humerus, parallel to lateral margin ending on apical quarter; interspaces punctate; elytral length 24-25 mm; elytral width 10-11 mm. Leg: slender; punctate, each puncture with pale seta; tibia with fringe of setae on inner apical margin. Venter: pro-, meso-, and metasterna punctate, each puncture with white seta medially, glabrous laterally; abdominal sterna punctate, each puncture with white seta; sterna 1-4 pustulate laterally. Total length: 24-30 mm.

Larval host plant. Unknown.

Distribution. Ecuador.

Specimens examined. Ecuador. No further data (DEI, 2). Bolivar: Balzapampa, Route de Quito, 7.?.1893 (USNM, 1), iii-iv.1894 (USNM, 1). Total: 4.