Chinaia bicornis, Marques, Ana Paula Coelho & Ale-Rocha, Rosaly, 2016

Marques, Ana Paula Coelho & Ale-Rocha, Rosaly, 2016, Four new species of Chinaia Bruner & Metcalf (Hemiptera: Cicadellidae: Neocoelidiinae) from the Neotropical Region, Zootaxa 4189 (1), pp. 145-155 : 147

Chinaia bicornis sp. nov.

Figs 1–11 , 41–42

Diagnosis. Pygofer with long dorsal process bifurcated apically, dorsal branch of process larger than ventral one ( Fig. 5 ). Subgenital plates, in ventral view, with six to seven macrosetae on apical half ( Fig. 6 ). Aedeagus dorsally curved, “U” shaped, with long basal apodeme and a pair of anteriorly curved spines at apex, and apical gonopore opening between spines ( Figs 9–11 ).

Measurements (mm). Male holotype: total length 5.86; crown median length 0.60; transocular width 1.48; interocular width 0.80; frons basal width 0.60; frons length 0.88; pronotum median length 0.64; width between humeri 1.60; mesonotum median length 0.68; mesonotum maximum width 0.88; forewing length 5.05; forewing maximum width 1.44.

General color. Yellow with orange and brown stains ( Figs 41–42 ). Head, in frontal view, entirely dark yellow, without distinct stains; crown dark yellow, without stains. Proepimerum orange; pronotum yellowish with orange stripe along posterior and lateral margins. Mesonotum yellowish with orange apex. Forewing yellowish with orange and brown stains and yellow venation; clavus yellow with light orange apex and transverse dark brown preapical stripe; two small brown dots close to anal margin and one small brown stain at apex; basal and middle thirds orange above claval suture, with dark orange stain close to claval suture and light orange along costal margin, intercalated with lighter orange stripe; approximately five brown narrow stripes present: two curved and close to apex of clavus and base of first and second apical cells, and three transverse and close to costal margin on apical third; about six brown dots on venation of second apical cell; hyaline area between the two apical most brown stripes. Hind wing brownish with red venation. Legs yellowish with yellow to light brown setae.

Description. Tentorial pits and coronal suture indistinct; frons approximately 1.5 times its basal width; forewing about 3.5 times longer than its greatest width; anteapical cells inconspicuous. Male genitalia: in lateral view, pygofer wider basally, narrowing towards apex and without macrosetae, with long dorsal process bifurcated apically, dorsal branch of process larger than ventral one ( Fig. 5 ). Subgenital plates fused only on basal third, length about two times its basal width; in ventral view, with six to seven macrosetae on apical half, close to inner margin ( Fig. 6 ). Style moderately long and thickened, with apex hook-like, curved ventrally and sclerotized, and with large apical lobe lateral to hook; microsetae bellow hook and several microsetae on apical lobe ( Figs 7–8 ). Connective cruciform, approximately same length of style, articulate to aedeagus ( Fig. 8 ). Aedeagus dorsally curved, “U” shaped, with long and thickened basal apodeme and a pair of anteriorly curved spines at apex, and apical gonopore opening between spines ( Figs 9–11 ). Anal tube simple, without processes ( Fig.5 ). Female unknown.

Geographical distribution. Panamá (Barro Colorado).

Specimens examined. Male holotype ( NMNH), with following labels: “ PANAMÁ, Panamá, Barro Colorado Isl., 10–20.iv. [19]65, S.S. & W.D. Duckworth [leg.]/ Chinaia n. sp. Kramer 1968”.

Holotype condition. Lateral side of thorax glued to the triangle. Left antennal flagellum broken only at apex. Legs and forewings in perfect state. Hind wings partially broken. Abdomen dissected.

Etymology. From the Latin, bi, two, twice; cornu, horn. The name alludes to the bifurcated apex of the long dorsal process of the pygofer.

Notes. Chinaia bicornis sp. nov. is similar to Chinaia bifurcata Kramer by the shape of the pygofer process ( Fig. 5 ), the general color and the color pattern and stains of the forewings ( Fig. 4 ). The two species can be easily separated by the morphology of the aedeagus, which does not have processes and bears a pair of long basal apodemes in C. bifurcata , and is more slender and possesses a pair of apical processes in C. bicornis sp. nov. ( Figs 9–11 ).

Figures

FIGURES 1 – 11. Chinaia bicornis sp. nov., male holotype: 1, head, pronotum and mesonotum, dorsal view; 2, head, frontal view; 3, head, pronotum and mesonotum, lateral view; 4, forewing; 5, pygofer and anal tube, lateral view; 6, valve and subgenital plates, ventral view; 7, style, lateral view; 8, connective and styles, dorsal view; 9, aedeagus, lateral view; 10, aedeagus, ventral view; 11, aedeagus, dorsal view.

FIGURES 41 – 47. Male holotype, lateral and dorsal view: 41 – 42, Chinaia bicornis sp. nov.; 43 – 44, Chinaia longicauda sp. nov.; 45, Chinaia modesta sp. nov.; 46 – 47, Chinaia peruviana sp. nov. Scale bar = 1.0 mm.