Typhlocybella parva Ruppel & DeLong 1953

Catalano, María Inés, Paradell, Susana Liria & Lenicov, Ana María Marino Remes, 2012, Revision of the genus Typhlocybella Baker, 1903 (Hemiptera: Cicadellidae: Typhlocybinae: Dikraneurini) and description of a new species from Argentina, Zootaxa 3164, pp. 57-63 : 60-61

Typhlocybella parva Ruppel & DeLong 1953

( Figs. 7–12 )

Diagnosis. Lenght: 2.4 mm.

Coloration: yellow to white, with a longitudinal median white stripe from crown to pronotum and small brown spots in the forewing.

First sternal complex (1S) ( Fig. 7 ) with sternal bar sclerotized with downward curved apex; dorsal apodeme well developed with broad medial notch, reaching sternal bar. Second sternal apodemes (2S) ( Fig. 7 ) long, reaching fourth segment.

Male genitalia: Pygofer ( Fig. 8 ), quadrangular in lateral view, with small circular notch in the median caudal margin, a row of 6 or 8 macrosetae on caudal margin, a group of long and fine setae on dorsal margin and numerous microsetae irregularly arranged on disk. Subgenital plate ( Fig. 9 ), in lateral view, broad at base, with two strong and long macrosetae in basal half and numerous fine and long microsetae on dorsal margin. Style ( Fig. 10 ) with preapical lobe quadrate, apical extension tapered, without setae. Connective ( Fig. 11 ) U-shaped, with apex turned dorsally, aedeagal articulation subterminal. Aedeagus ( Fig. 12 ) with short preatrium, large and triangular dorsal aedeagal apodeme, shaft compressed, curved upward, area dorso-apical projected dorsally and ending in a bifurcate apex; a pair of ventral processes dorsally directed. Gonopore terminal.

Type material examined. T. parva : Holotype male Cuernavaca, Morelos, Mexico, December 28, 1949, Beamer col., 1 paratype male Cuernavaca, Morelos, Mexico, December 28, 1949, Beamer col., 6 paratypes (4 males and 2 females) Mex. City, Guerrero, Mexico, December 27, 1949, Beamer col., 1 paratype female Mex. City, Guerrero, Mexico, December 27, 1949, Shaw col. OSUC.

Notes. Examination of the type material of this species indicates that three of the dissected specimens (1 paratype male Cuernavaca, Morelos, Mexico, December 28, 1949, Beamer col., and 2 paratypes males, Mex. City, Guerrero, Mexico, December 27, 1949, Beamer col.) do not correspond to the description of T. parva . Instead, these specimens agree with the description and the characters observed in the examined material of T. minima . Only one specimen dissected (1 paratype male, Mex. City, Guerrero, Mexico, December 27, 1949, Beamer col.) agrees somewhat with the description of T. parva , but shows small differences from the original description ( Ruppel & DeLong 1953) in the shape of the aedeagus processes. This difference could not be verified because the genitalia of the holotype are cleared almost to the point of invisibility.

Distribution. Mexico ( Ruppel & DeLong 1953).

Figures

FIGURES 7 – 12. Typhlocybella parva Ruppel & DeLong 1953. Male: 7) sternal apodemes; 8) pygofer, lateral view; 9) subgenital plate; 10) style; 11) connective; 12) aedeagus. Scale bar = 0,1 mm.