Parimatidium Spaeth, 1938

Sekerka, Lukáš, 2014, Review of Imatidiini genera (Coleoptera: Chrysomelidae: Cassidinae), Acta Entomologica Musei Nationalis Pragae 54 (1), pp. 257-314 : 287-288

Parimatidium Spaeth, 1938

( Fig. 16 )

Parimatidium Spaeth, 1938: 307 (as subgenus of Himatidium ); ASLAM (1966): 691 (as genus). Type species: Himatidium rubrum Boheman, 1850 by original designation.

Distinguishing characters. Readily characterized by the tarsal claws with a large basal tooth, a rare character present only in Parimatidium and Spaethaspis , while all other Imatidiini have the claws simple. Spaethaspis differs in the transverse and subquadratic pronotum and the smooth lateroapical margins of the elytra, while Parimatidium has a semicircular pronotum and serrate lateroapical margins of the elytra ( Fig. 16 ). Many Demotispa have similar body forms but differ in the simple tarsal claws.

Species transferred to other genera. SPAETH (1938) proposed Parimatidium as a subgenus of Himatidium and included in it ¿ve species having serrate apical margins of the elytra. Recently, STAINES (2009) transferred numerous Demotispa species to Parimatidium on the basis of the serrate lateroapical margins of the elytra. However, both, Spaeth and Staines, overlooked that Himatidium rubrum Boheman, 1850 , the type species, has tarsal claws with a large basal tooth, while other species included have the tarsal claws simple, thus not being congeneric with the type species. Therefore all species with simple tarsal claws (and also metallic elytra) are transferred here to Xenispa . Himatidium spaethi Bondar, 1940 , also included in Parimatidium ( STAINES 2009) , is here transferred to Oediopalpa Baly, 1858 because it has each pronotal corner with a seta. As a result only two species remain in Parimatidium .

Number of species. 2 (present paper).

Biology. Nothing is known about the biology of Parimatidium .

Distribution. Brazil and French Guyana.

Figures

Figs 12–24. Dorsal habitus. 18 – Katkispa insignis (Pic, 1934), syntype, Venezuela: Colonia Tovar; 13 – Weiseispa angusticollis (Weise, 1893), Ecuador: Río Palenque; 14 – Demotispa pulchella Baly, 1858, lectotype, Peru; 15 – Demotispa rubiginosa (Boheman, 1862), Panama: Chiriquí; 16 – Parimatidium rubrum (Boheman, 1850), French Guyana:St. Laurent du Maroni;17 – Pseudostilpnaspis lata (Baly, 1885), Panama:Santa Clara; 18 – Pseudimatidium elaeicola Aslam, 1966, Colombia: Calima area; 19 – Windsorispa latifrons (Weise, 1910), Colombia: SantoAntonio; 20 – Cephaloleia Àavipennis Baly, 1869, Ecuador: Río Hollín; 21 – Melanispa sp., Guadeloupe; 22 – Parentispa formosa (Staines, 1996), Panama: La Fortuna; 23 – Stenispa attenuata Baly, 1875, Panama: Gamboa; 24 – Lechispa parallela (Pic, 1930), syntype, Argentina: Rosas. All scale bars = 2.5 mm.