Orexita bahiana ( Spaeth, 1931 ) Sekerka, 2016

Sekerka, Lukáš, 2016, Taxonomic and nomenclatural changes in Cassidinae (Coleoptera: Chrysomelidae), Acta Entomologica Musei Nationalis Pragae 56 (1), pp. 275-344 : 312-313

publication ID	https://doi.org/ 10.5281/zenodo.5305725
publication LSID	lsid:zoobank.org:pub:E24F1028-C6AC-4323-9ED5-C9B7FF3434ACD
DOI	https://doi.org/10.5281/zenodo.5332723
persistent identifier	https://treatment.plazi.org/id/677FCF20-FFFF-FFD7-FE96-FBF1FDD1FE03
treatment provided by	Marcus
scientific name	Orexita bahiana ( Spaeth, 1931 )
status	comb. nov.

Treatment

Orexita bahiana ( Spaeth, 1931) comb. nov.

Cistudinella bahiana Spaeth, 1931b: 184 View in CoL (original description).

Type locality. ‘Bahia-Iguassu’ [= Brazil, Bahia, Iguaçu, approx. 12°56′S, 41°04′E].

Type material examined. LECTOTYPE (designated by BOROWIEC 1999a): ♂, pinned, ‘ Bahia: | Iguassú [w, p, cb] || Sv. Amazon | Exp. | Roman [w, p, cb] || 4 [hw] juli [w, p, s] || TYPUS [pi, p, cb] || bahiana [hw] | m. ♂ Typus [hw] | Spaeth det. [w, p, cb] || LECTOTYPE | des. L. Borowiec [r, p, cb] || NHRS-JLKB | 000021010 [w, p, cb]’ ( NHRS). PARALECTOTYPE: ♀, pinned: ‘ Bahia: | Iguassú [w, p, cb] || Sv. Amaz.- | Exp. Roman [w, p, cb] || 22 [hw] aug. [w, p, s] || TYPUS [pi, p, cb] || bahiana [hw] | m. ♀ Typus [hw] | Spaeth det. [w, p, cb] || PARALECTOTYPE | des. L. Borowiec [r, p, cb] || NHRS-JLKB | 000021982 [w, p, cb]’ ( NHRS).

Remarks. SPAETH (1931b) compared this species to Cistudinella lateripunctata Spaeth, 1905 and C. apiata ( Boheman, 1854) because of the yellowish-brown body with coarse punctures on the explanate margin of elytra, but stated that C. bahiana differs from both in the shape of pronotum and punctation of elytra. HINCKS (1956) followed Spaeth and placed C. bahiana in couplet with C. lateripunctata in his key to species of Cistudinella .

All species of Cistudinella are characterized by the posterior angles of pronotum forming an acute angle, which is more or less projecting backwards, particularly in males while C. bahiana has the basal corners of pronotum broadly rounded therefore C. bahiana does not belong to Cistudinella . In my opinion C. bahiana belongs to Orexita as it exhibits the typical diagnostic traits of this genus: long antennae with four basal shiny and sparsely pubescent antennomeres, flat body, bare apex of elytra and simple tarsal claws.

Orexita bahiana belongs to the group of species with regularly convex elytra and explanate margin of elytra with sparsely arranged coarse punctures, see thesis 5a in SPAETH (1911) but differs from all in small size of body and so far it is the smallest species of the genus.

Distribution. Brazil: Bahia ( SPAETH 1931b).