Omolicna Fennah 1945

Bahder, Brian W., Bartlett, Charles R., Barrantes Barrantes, Edwin A., Zumbado Echavarria, Marco A., Humphries, Alessandra R., Helmick, Ericka E., Ascunce, Marina S. & Goss, Erica M., 2019, A new species of Omolicna (Hemiptera: Auchenorrhyncha: Fulgoroidea: Derbidae) from coconut palm in Costa Rica and new country records for Omolicna brunnea and Omolicna triata, Zootaxa 4577 (3), pp. 501-514 : 505-506

Genus Omolicna Fennah 1945

Type Species: Omolicna proxima Fennah, 1945:440 .

Amended Diagnosis. The members of this genus can be separated from similar cenchreine derbids by the relatively broad vertex with pit-like sensoria bordering the lateral margins (these pits were given as a tribal feature in Emeljanov (1995). Vertex wider than long (midline less than 2x as long as broad at widest part), medially concave, with the lateral margins diverging caudally. Frons moderately compressed, elongate, narrowed between eyes, without a longitudinal median carina, lateral margins foliately keeled. A scroll-like extension of the lateral aspect of the pronotum partially surrounds and subtends the base of the antennae forming antennal fossae (a tribal feature). Forewings with pits on postcubitus in clavus (a tribal feature), clavus closed (combined Pcu + A1 reaching CuP), extending beyond midlength of forewing. The male pygofer with a median ventral process, phallotheca (periandrium) with terminal flagellum (endosoma) folded anterodorsally with an asymmetrical arrangement of spines.

Remarks. The key to genera for Cenchreini presented in O’Brien (1982), modified from Fennah (1952), used (in part) features of the forewing venation for recognition of genera. However, review of available diagrams of wing venation for Omolicna (e.g., Caldwell & Martorell 1951, Fennah 1971), specimens of North American Omolicna species, and a wing photograph of the type species, Omolicna proxima Fennah , suggests that forewing features may be heterogeneous and not entirely reliable for genus-level diagnostics.