Icaia cygnus, Zahniser, James N. & Hicks, Andrew, 2007

Zahniser, James N. & Hicks, Andrew, 2007, Three new species of Icaia Linnavuori (Hemiptera: Cicadellidae: Deltocephalinae) from Peru and distinction of the genus from Athysanella Baker, Zootaxa 1390, pp. 27-39 : 36-37

Icaia cygnus sp. nov.

( Figs. 24–29 )

Color ivory to ochraceous with extensive brown to black markings. Crown produced, nearly 2x length of inner margin of eye; completely shagreen; depressed; with a pair of large black markings flanking fuscous medial line; posterior margin ivory, with a longitudinal dark dash­shaped mark on either side. Anterior margin of head distinctly upturned, glabrous. Ocellus about 3x its own diameter to eye. Transition of crown to face bluntly angulate. Frontoclypeus depressed anteriorly. Eyes notched. Brachypterous; wings veins reticulate and obscure medially. Ventral side of thoracic segments with large black markings. Legs ochraceous with brown markings; protibia formula 3+3, but proximal­most pair small; hind femur formula 2+2+0, with posteriormost seta of penultimate pair reduced in size.

Male. Pygofer sub­rectangular, with a blunt caudoventral lobe; without macrosetae. Subgenital plates without macrosetae. Connective about 1.2x length of style; with very long and gracile anterior arms; stem short, expanded posteriorly. Style preapical lobe rounded, with a patch of fine setae arising posteriorly; apophysis falcate with medial margin finely serrate. Aedeagus with gonopore on anterior/dorsal side and with a pair of small lamellate triangular processes arising from dorsal margin of gonopore; with a large recurved extension with a strongly sclerotized bifid triangular tip that nearly touches dorsal tip of atrium.

Material examined. Holotype male, PERU: Pasco, 8 km E / Carhuamayo, 4000m / 10°53’07”S 75°56’44”W / 23 Oct 2002, C.H.Dietrich / vacuum, 02­35­1. Holotype deposited at MUSM. Etymology. The species name is a noun in apposition. Cygnus is the generic name for swans, and refers to the apical process on the aedeagus, which resembles the head of a swan in profile.

Diagnosis. The male genitalia of this species resembles that of I. ecphyla Blocker but differs in the shape of the aedeagus with its paired subapical processes (fig. 26).

Figures

FIGURES 24 – 29. Icaia cygnus sp. nov. 24: dorsal habitus, male; 25: lateral habitus, male; 26: aedeagus, laterally; 27: subgenital plate and valve, ventrally; 28: connective and styles, ventrally; 29: pygofer, laterally.