Xiqilliba bellator Kramer, 1964

Ale-Rocha, Rosaly, 2017, Description of a new neotropical species of Xiqilliba Kramer (Hemiptera: Cicadellidae: Neocoelidiinae), Zootaxa 4311 (3), pp. 409-416 : 411-413

Xiqilliba bellator Kramer

Figs 1–12 , 25 – 26

Xiqilliba bellator Kramer, 1964: 268 –269, 283 (description, illustrations); Oman et al., 1990: 260 (catalogue); Dietrich, 2003: 701 (citation); Marques-Costa & Cavichioli, 2012: 5, 12, 14–17, 22 (uncertain distribution, illustrations, cladistic analysis of Neocoelidiinae ).

Xiqilliba coelidoides Linnavuori, 1965: 147 –148 (description); Kramer, 1967: 46 (synonymy). Xiqilliba coelidioides [sic] Linnavuori, 1965: 146, 148 (illustrations).

Diagnosis. Pygofer approximately rectangular, not narrowing apically, ventral margin with a preapical membranous lobe with microsetae on apex ( Figs 6 – 7 ). Style arched, without strong basal curve, with small apical spine curved ventrally and microsetae on entire lateral inner margin, giving it a serrate aspect ( Figs 9 – 10 ). Aedeagus shaft with apical third curved dorsally and without processes ( Figs 11 – 12 ). Anal tube with pair of long basal processes, narrowing towards apex, with sharp apices crossing inside genital capsule ( Figs 6 – 7 ).

Measurements (mm). Male holotype: total length 6.56; crown median length 0.44; transocular width 1.36; interocular width 0.76; frons basal width 0.56; frons length 0.84; pronotum median length 0.60; width between humeri 1.64; mesonotum median length 0.92; mesonotum maximum width 1.12; forewing length 5.35; forewing maximum width 1.40.

General color. Yellow with brown to black markings ( Figs 25 – 26 ). Head in anterior view yellow with central black spot at base of the frons; frons dark yellow laterally; clypeus dark-yellow in central portion. Crown yellow with pair of small median dark-brown to black marks close to anterior margin, and wide central brown mark, slightly narrowed in median third, light-brown laterally, almost covering entire crown; tentorial pits yellowish, surrounded by brown. Pronotum yellow, with wide central dark-brown marking, black close to the anterior margin and widened close to posterior margin. Mesonotum yellow, with four longitudinal dark-brown to black stripes: two wider close to lateral angles and two narrow in central portion, enlarged close to preapical fold and united to pair of brown spots close to apex. Forewing with brown veins, basal third opaque, median and apical thirds hyaline; yellow mark in basal third covering base of claval suture and clavus, extending to costal margin; remainder of clavus dark-brown; median and apical thirds brownish with veins of same color. Hind wing brown with veins of same color. Legs yellow with yellow to brown bristles. Abdominal tergum and sternum dark-brown to black.

Description. Structural characters as in generic description, except: forewing about 4.5 times longer than greatest width. Male genitalia: in lateral view, pygofer approximately rectangular, not narrowing apically, strongly sclerotized and without processes; ventral margin with preapical membranous lobe with microsetae at apex ( Figs 6 – 7 ). Subgenital plates approximately triangular, enlarged basally, narrowing towards apex; fused in basal half and cleft separating plates reaching median third; apices rounded with microsetae; plates longer than pygofer and approximately twice longer than basal width ( Fig. 8 ). Style arched, extremely long and slender, without strong basal curve, apex with small apical spine curved ventrally, microsetae along entire inner margin giving it serrate appearance ( Figs 9 – 10 ). Connective Y-shaped, approximately one fourth of style length, stalk enlarged and articulated to base of aedeagus ( Fig. 10 ). Aedeagus, in lateral view, slender and without processes; base with small rounded apodeme; shaft with apical third curved dorsally; membranous in basal two thirds, ventral margin and apical third sclerotized; ventral margin flat, without teeth; apex truncated in lateral view; gonopore apical ( Figs 11 – 12 ). Anal tube strongly sclerotized with pair of long basal processes, wide in the basal two thirds, narrowing towards apex, with sharp apices curved inside and crossing inside the genital capsule ( Figs 6 – 7 ). Female unknown.

Geographical distribution. Brazil and Peru or Argentina.

Specimens examined. Male holotype (NMNH), with following labels: “BRASIL, Itaituba [no other data on labels]/ Holotype/ Holotype Xiqilliba bellator Kramer ”; ibidem, 1 male paratype (NMNH); [PERU or ARGENTINA] Rioja, Sud América/ Rioja apulia (Dist.) det. Linnavuori, 1961/ Mesogonia apulia Dist. / Figured by Linnavuori, 1961/ MMB[C]/ in Neocoelidiinae , D.A. Young [det.]/ Typus/ Collectio Dr. L. Melichar, Moravské Museum Brno, 1 male (MMBC). Note: although the specimen from Peru is labeled as a type, this is incorrect since, according to Distant (1908), the type of Mesogonia apulia (Distant) (Tettigoniella) is deposited at the British Museum of Natural History (BMNH) and not at the Moravian Museum (MMBC). The type of Xiqilliba bellator Kramer is deposited at NMNH ( Kramer, 1964). Considering the fact that a label apparently referring to an unpublished manuscript name [Rioja apulia ] is attached to the specimen, the red type label may have been added to the pin by the author of that name.

Holotype condition. Antennal flagella broken. Thorax ventrally glued to the entomological triangle. Forewings and left hind wing in perfect condition, right hind wing broken apically. Fore legs, medium legs and left hind leg in perfect state of conservation, not broken but glued to the entomological triangle; right hind leg broken, tibia and tarsi glued to the entomological triangle. Abdomen dissected.

Variations. Male paratype with brown markings of crown reduced, smaller than in holotype, and without pair of brown stains close to anterior margin, but with transverse stripe dark-brown to black on anterior margin of crown; central mark of crown dark-brown to black ( Fig. 2 ). Central mark of pronotum also dark-brown to black, of irregular form, with strong constriction close to anterior margin; posterior margin with brown transverse stripe ( Fig. 2 ). Basal half of forewing, opaque, only apical half hyaline; remainder of clavus brown to black. Legs yellow to light-brown.

Figures

FIGURES 1 – 12. Xiqilliba bellator Kramer: 1, 3 – 12, male holotype; 2, male, color variation: 1 – 2, head, pronotum and mesonotum, dorsal view; 3, head, frontal view; 4, head and pronotum, lateral view; 5, forewing; 6, pygofer and anal tube, lateral view; 7, pygofer and anal tube, ventral view; 8, subgenital plates, ventral view; 9, style, lateral view; 10, connective and styles, dorsal view; 11, aedeagus, lateral view; 12, aedeagus, dorsal view.

FIGURES 25 – 28. Male holotype, dorsal and lateral view: 25 – 26, Xiqilliba bellator; 27 – 28, Xiqilliba sakakibarai sp. nov. Scale bar = 1.0 mm.