A new genus and new species of spittlebug (Hemiptera: Cercopidae: Ischnorhininae) from Southern Brazil

A new genus of spittlebug is described to include Gervasiella oakenshieldi sp. nov. (holotype male from Brazil, state of Paraná, municipality of Piraquara, Mananciais da Serra at 25°29'46"S, 48°58'54"W, 1000 m a.s.l., 15.XI.2008, P.C. Grossi leg., deposited in DZUP). In addition, Aeneolamia bucca Paladini & Cavichioli, 2013 is transferred to Gervasiella gen. nov. based on the results of a cladistic analysis. Gervasiella gen. nov. can be distinguished from the other cercopid genera by the following: postclypeus inflated with upper portion black and basal one yellowish; color of tylus distinct from color of head and rostrum, barely reaching mesocoxae. Gervasiella oakenshieldi sp. nov. is diagnosed by having the head black with tylus white, postclypeus in profile inflated and convex with a prominent longitudinal carina; tegmina black with two elongate white maculae near costal margin, one on anterior third and the other on posterior third.

本文记述沫蝉科（Cercopidae）1新属，该属包含新种（sp. nov.，species nova）Gervasiella oakenshieldi sp. nov.，其正模雄虫采集于巴西巴拉那州皮拉夸拉市马南西亚斯达塞拉，地理坐标为南纬25°29′46″、西经48°58′54″，海拔1000米，采集时间为2008年11月15日，采集人P.C. Grossi，标本保存于DZUP标本馆。此外，基于支序分类分析（cladistic analysis）结果，将2013年由Paladini与Cavichioli发表的Aeneolamia bucca Paladini & Cavichioli, 2013转入新属Gervasiella gen. nov.（gen. nov.，genus nova）。该新属可通过以下特征与其他沫蝉科属级类群相区分：后唇基（postclypeus）膨大，其上半部呈黑色，基部为淡黄色；小舌（tylus）的颜色与头部及喙（rostrum）明显不同，喙仅伸达中足基节（mesocoxae）。Gervasiella oakenshieldi sp. nov.的鉴别特征如下：头部黑色，小舌为白色；侧面观后唇基膨大隆起，具显著的纵脊；前翅（tegmina）黑色，近前缘域具2个长形白色斑点，分别位于前1/3处与后1/3处。