University of Nebraska - Lincoln DigitalCommons@University of Nebraska - Lincoln Center for Systematic Entomology, Gainesville, Insecta Mundi Florida 8-24-2012 A review of the New World Krisnini (Hemiptera: Cicadellidae: Iassinae) including three genera and six new species Paul H. Freytag University of Kentucky, [email protected] Follow this and additional works at: https://digitalcommons.unl.edu/insectamundi Part of the Entomology Commons Freytag, Paul H., "A review of the New World Krisnini (Hemiptera: Cicadellidae: Iassinae) including three genera and six new species" (2012). Insecta Mundi. 756. https://digitalcommons.unl.edu/insectamundi/756 This Article is brought to you for free and open access by the Center for Systematic Entomology, Gainesville, Florida at DigitalCommons@University of Nebraska - Lincoln. It has been accepted for inclusion in Insecta Mundi by an authorized administrator of DigitalCommons@University of Nebraska - Lincoln. INSECTA MUNDI A Journal of World Insect Systematics 0246 A review of the New World Krisnini (Hemiptera: Cicadellidae: Iassinae) including three genera and six new species Paul H. Freytag Department of Entomology University of Kentucky Lexington, KY 40546-0091 Date of Issue: August 24, 2012 CENTER FOR SYSTEMATIC ENTOMOLOGY, INC., Gainesville, FL Paul H. Freytag A review of the New World Krisnini (Hemiptera: Cicadellidae: Iassinae) including three genera and six new species Insecta Mundi 0246: 1-8 Published in 2012 by Center for Systematic Entomology, Inc. P. O. Box 141874 Gainesville, FL 32614-1874 USA http://www.centerforsystematicentomology.org/ Insecta Mundi is a journal primarily devoted to insect systematics, but articles can be published on any non-marine arthropod. Topics considered for publication include systematics, taxonomy, nomencla- ture, checklists, faunal works, and natural history. 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Florida Virtual Campus: http://purl.fcla.edu/fcla/insectamundi University of Nebraska-Lincoln, Digital Commons: http://digitalcommons.unl.edu/insectamundi/ Goethe-Universität, Frankfurt am Main: http://edocs.ub.uni-frankfurt.de/volltexte/2010/14363/ Author instructions available on the Insecta Mundi page at: http://www.centerforsystematicentomology.org/insectamundi/ Copyright held by the author(s). This is an open access article distributed under the terms of the Creative Commons, Attribution Non-Commercial License, which permits unrestricted non-commercial use, distribution, and reproduc- tion in any medium, provided the original author(s) and source are credited. http://creativecommons.org/licenses/ by-nc/3.0/ 0246: 1-8 2012 A review of the New World Krisnini (Hemiptera: Cicadellidae: Iassinae) including three genera and six new species Paul H. Freytag Department of Entomology University of Kentucky Lexington, KY 40546-0091 [email protected] Abstract. The tribe Krisnini (Hemiptera: Cicadellidae) is presently known in the New World from three species from Puerto Rico and one species from Dominican Amber, all described in the Old World genus Krisna Baker. The three species from Puerto Rico are being placed in Lipokrisna, new genus, with Krisna insularis Oman as the type species, becoming Lipokrisna insularis (Oman), new combination. The other species in this genus are L. montana (Caldwell) and L. aesta (DeLong) both new combinations. The one species from Dominican amber is placed in the Genus Archiokrisna, new genus, with Krisna garciamarquezi Dietrich as the type species, becoming Archiokrisna garciamarquezi (Dietrich), new combination. The genus, Neokrisna, new genus, is described for six new species from the Dominican Republic, with Neokrisna oncora, new species, as the type species. The other new species in the genus are N. breva, N. decliva, N. libera, N. longula, and N. stena. A key to the species of Neokrisna is included. The three genera are compared with each other and the old World genus Krisna. Key words. Hemiptera, Cicadellidae, Iassinae, Krisna, Lipokrisna, Archiokrisna, Neokrisna, leafhoppers, Puerto Rico, Dominican Republic Introduction The tribe Krisnini (Hemiptera: Cicadellidae) is known from the Oriental region of the Old World, and from the Caribbean region in the New World. All species of the tribe Krisini look superficially alike and differ primarily only in the shape of the head and the male genitalia. Viraktamath (2006) recently re- viewed the Indian genera and species. This paper reviews the genera and species that occur in the Carib- bean region. All New World species that have been described were placed in the genus Krisna Baker, including three species from Puerto Rico and one species from Dominican amber. Oman (1936) described the first species from Puerto Rico, Krisna insularis. Caldwell described Krisna montana, in Caldwell and Martorell’s (1952) review of the species of leafhoppers from Puerto Rico. DeLong (1982) described Krisna aesta from Pureto Rico. The Dominican amber species, Krisna garciamarquezi, was described by Dietrich, in Dietrich and Vega (1995). While all New World species have characters in common with the Old World genus Krisna, they appear to belong to separate genera. The Krisnini in general are rather large oval shaped leafhoppers. They are nearly unicolorus green, yellow green or straw color, and have a femoral setal formula of 2-2-1. The forewing usually has some reticulate viens in the apical area. The anterior margin of the head is either bluntly or sharply foliaceous, and the ocelli are on the margin near the eyes. The appendix of the forewing varies from nearly absent to well-developed. The male aedeagus is short, curved dorsad and with or without basal processes. The New World species differ from the Old World species by having the anterior margin of the head usually sharply foliaceous (Fig. 4) whereas in the Old World species it is usually bluntly foliaceous (Fig. 2). The New World species also have one incomplete submarginal vein of the hindwing and not across the jugal lobe, whereas the Old World species have a complete submarginal vein and across the jugal lobe. This latter character was discussed by Webb (1991) for the first time. The New World species also have the appendix reduced, or nearly absent, and the Old World species have the appendix well developed. The aedeagus of the New World species have a pair of ventral processes, and the Old World species usually have an aedeagus without processes. 1 2 • INSECTA MUNDI 0246, August 2012 FREYTAG Materials Codens for institutions in which the material is deposited are the following: BMNH = British Mu- seum of Natural History, London, England, Great Britain; CMNH = Carnegie Museum of Natural History, Pittsburgh, Pennsylvania, U.S.A.; FSCA = Florida State Collection of Arthropods, Gainesville, Florida, U.S.A.; MHND = Museo Nacional de Historia Natural, Santo Domingo, Dominican Republic; and UKYL = University of Kentucky Collection, Lexington, Kentucky, U.S.A. Archiokrisna Freytag, new genus Type species: Krisna garciamarquezi Dietrich, here designated. Description. Length of male 7 mm. One species was described by Dietrich, in Dietrich and Vega (1995), for an amber-preserved specimen from the Dominican Republic. This description is adequate to describe this genus and the species. The main characters that differ from other genera is the anterior margin of the head is not sharply foliaceous as in present day New World species, but not bluntly rounded as in the Old World genus Krisna. Also the male seventh sternum is greatly expanded and the subgenital plates are very long which is not