Alurnus humeralis Rosenberg, 1898

Rendón-Ramírez, Alejandra, Vergara-Navarro, Erika Valentina & Quiroz-Gamboa, John Alveiro, 2024, The genus Alurnus Fabricius, 1775 (Chrysomelidae: Cassidinae: Alurnini) in Colombia with four new species records and an updated checklist in the country, Zootaxa 5551 (1), pp. 116-130 : 123-124

Alurnus humeralis Rosenberg, 1898

( Fig. 10 )

Alurnus forticornis Weise, 1910

Alurnus maximus Jacobson, 1899

Alurnus saundersii humeralis Jacobson, 1899

Diagnosis. Antennal scape and pedicel cylindrical. Pronotum glabrous, with rounded tooth in anterior angle and acute tooth in posterior angle, lateral margin bisinuate. Elytra yellow with black spot on humeral calli and a black spot on middle region ( Staines 2013).

Material examined. COLOMBIA: Nariño, Chachagüí, i.1972, Coll.A. Palacio, (1ex.) [ MEFLG]. Tumaco , 2m, coconut and palms, viii.1967. Coll. Jiménez, (9 exs.) [MEFLG-3116]. Ricaurte, 8.i.2000. Coll. G. Velásquez (1ex.) [ MHN-UPN]. Tumaco, 2m, hand collecting, peach palm strains, v. 1996. Coll. R. Delgado, (1ex.) [MEFLG-7164]. Tumaco, african palm, v.1961. Coll. Raigosa, (1ex.) [CTNI-1560]. Tumaco, Estación experimental La Providencia, african palm. 4.ii.2013. Coll. C. Sendoya, (1ex.) [CENIPALMA].

Measurements: n= 6. 31.77mm ± 1.20mm

Plant associations. Elaeis guineensis Jacq. ( Arecaceae —Palmae)—african palm; Cocos nucifera L. ( Arecaceae )—coconut; Bactris gasipaes Kunth ( Arecaceae )—peach palm. Literature review suggests association with Astrocaryum chonta Mart. ( Arecaceae ) ( Staines, 2013).

Distribution. Ecuador, Peru, Bolivia, Colombia (Putumayo) ( Merino & Vásquez 1963; Staines, 2013; Zambrano 2015). New Colombian record: Nariño.

Figures

FIGURES 7–10. Dorsal view Alurnus species from Colombia.7. Alurnus costalis Rosenberg, 1898. 8. Alurnus grossus Fabricius, 1775. 9. Alurnus horni Uhmann, 1935. 10. Alurnus humeralis Rosenberg, 1898 (eggs and pupae). Scale bars: 10 mm.