Xenispa argentina ( Monrós & Viana, 1947 )

Sekerka, Lukáš, 2017, Taxonomic changes within Imatidiini and Hybosispini (Coleoptera: Chrysomelidae: Cassidinae), Acta Entomologica Musei Nationalis Pragae (Acta. Ent. Mus. Natl. Pragae) 57 (2), pp. 351-380 : 369

Xenispa argentina ( Monrós & Viana, 1947)

( Fig. 19 )

Demothispa argentina Monrós & Viana, 1947: 158 (original description).

Type locality. ‘ Argentina: Formosa, dto Capital: Isla de Oroʼ.

Type material examined. HOLOTYPE: glued (missing right midtarsi and left hind leg), ‘Formaso | M. Viana | I. 936 [w, hw, cb] || 55 [red, typed on typing machine, cb] || Dibujado [w, hw, cb] || Demothispa [Uhmann hw] | sp. [Uhmann hw] | UHMANN DET.37 [w, p, s] || ARGENTINA | 1968 Colin.| J. Daguerre [w, p, cb] || Demothispa [Vianna hw] | argentina nov. [Vianna hw] | M. VIANA DETRM. [w, p, cb] || 9 [g, typed, cb] || Holotipo [r, hw, cb] || HOLOTYPE [r, p, cb, bb] || BLNO | 002832 [blue, p, cb, bb] || USNMENT | [data matrix barcode] | 00911217 [w, p, cb]ʼ ( USNM).

Remarks. MONRÓS & VIANA (1947) described D. argentina based on two specimens and compared it with D. latifrons and D. bicoloricornis . STAINES (2009) transferred it to the genus Stilpnaspis Weise, 1905 without any explanation. Most recently, I have assigned it to Xenispa Baly, 1859 based on original figure but stated that the transfer is tentative as no type material was examined. Subsequently, I had opportunity to study the holotype of D. argentina ( Fig. 19 ) and I can hereby confirm the transfer to Xenispa as it has all the principal characters of that genus as mentioned in my previous paper ( SEKERKA 2014).

Xenispa argentina has similar shape of body to many other species of that genus but differs at first glance by uniformly yellow dorsum while all other species of Xenispa have at least elytra black or metallic blue. The species is so far known only from the two type specimens. Distribution. Argentina: Formosa and Paraguay: Itapúa ( MONRÓS & VIANA 1947).

Figures

Figs 15–22. 15 – Cephaloleia cyanea Staines, 1996 (holotype, 4.0 mm); 16 – Xenispa gilvipes (Uhmann, 1930) (holotype, 4.4 mm); 17 – Xenispa pulchella Baly, 1859 (holotype, 7.7 mm); 18 – Xenispa fouquei sp. nov. (♂ paratype from the type locality, 6.9 mm); 19 – Xenispa argentina (Monrós & Viana, 1947) (holotype, 5.1 mm); 20 – Hybosispa delectabilis (Staines, 1996) (holotype, 3.9 mm); 21 – Hybosispa sulciceps (Baly, 1885) (syntype, BMNH, 3.1 mm); 22 – Hybosispa truncatipennis (Baly, 1869) (holotype, 6.75 mm).