Takiyaella mejdalanii, Gonçalves & Domahovski, 2021

Gonçalves, Clayton C. & Domahovski, Alexandre C., 2021, A new genus and five new species of Neocoelidiinae leafhoppers from Brazil (Insecta: Hemiptera: Cicadellidae) with a key to males, European Journal of Taxonomy 775, pp. 34-61 : 50-53

Takiyaella mejdalanii gen. et sp. nov.

urn:lsid:zoobank.org:act:83EC235F-172B-4A24-BC70-66CF0586F9C9

Figs 8–9 , 12I–J , 13

Diagnosis

Male pygofer ( Fig. 8E ) strongly expanded apically, with apical lobe. Aedeagus ( Fig. 8J–K ) with atrial processes large, flattened laterally, directed caudally and bent dorsally; shaft short, flattened laterally on basal half and dorsoventrally on apical half, apex expanded with laterodorsal spiniform projections. Anal tube ( Fig. 8E ) with basal portion produced anteroventrally bearing moderately long basiventral acute teeth.

Etymology

The specific epithet is a tribute to Prof. Dr Gabriel Mejdalani in recognition of his remarkable contribution to our knowledge of the Brazilian Cicadellidae .

Material examined

Holotype BRAZIL • ♂; Minas Gerais, Catas Altas, R[eserva] P[articular do] P[atrimônio] N[atural] Santuário do Caraça , Ribeirão Caraça, Cascatona ; 20°4′17.8″ S, 43°29′17.7″ W; alt. 1200 m; 17 Mar. 2015; A.L.D. Ferreira leg.; sweep; DZRJ-AUCH #246; DZRJ.

Paratypes BRAZIL – Minas Gerais • 1 ♀; same collection data as for holotype; DZRJ-AUCH #247; DZRJ • 1 ♂; Catas Altas, RPPN Santuário do Caraça , Trilha Bocaina ; 20°6′35.2″ S, 43°29′12″ W; alt. 1289 m; 16 Mar. 2015; C.H. Dietrich leg.; sweep; DZRJ-AUCH #248; DZRJ • 1 ♂; São Gonçalo do Rio de Baixo, Estação Ambiental de Peti, Cemig ; 21 Feb. 2002; A.F. Kumagai leg.; Malaise trap; DZUP-083608 ; DZUP • 1 ♂; same collection data as for preceding; 29 Nov. 2002; DZUP-083609 ; DZUP • 1 ♂; same collection data as for preceding; 13 Dec. 2002; DZUP-083610 ; DZUP • 1 ♀; same collection data as for preceding; 24 Jan. 2003; DZUP-083611 ; DZUP .

Description

MEASUREMENTS (mm). Holotype (♂): total length 6. Paratypes (♂): 6.0–6.5 (n = 4); (♀) 6.8–6.9 (n = 2).

COLORATION. Pale yellow ( Fig. 12I–J ). Forewing ( Fig. 8D ) translucent, with three dark maculae on claval comissure: first, between base and second anal vein; second, between anal veins and third on apex of clavus and extending to brachial cell.

HEAD AND THORAX. External morphological characters as in generic description.

MALE TERMINALIA. Pygofer, in lateral view ( Fig. 8E ), 1.3 × as long as maximum height, strongly expanded apically, apical portion twice as high as basal portion; dorsal margin slightly concave medially; caudal margin truncated with small ventral rounded lobe; ventral tooth slightly rounded; apical portion with inner integument thickening. Subgenital plate, in lateral view ( Fig. 8F ), subtriangular, 2.6 × as long as maximum height, narrowing at apical fourth; in ventral view ( Fig. 8G ), cordiform, lateral margins converging towards apex; ventral surface with pair of uniseriate rows of 2–3 macrosetae; apex acutely rounded. Connective ( Fig. 8H ) V-shaped, total length approximately ⅔ length of style; stem short. Style ( Fig. 8H–I ) with dorsal margin of apodeme rounded; apophysis elongated and robust. Aedeagus ( Fig. 8J–K ) with pair of large atrial processes, approximately ½ length of shaft, flattened laterally, posterior to curvature of the shaft, directed caudally and bent dorsally, wide at base and narrowing towards acute apex; shaft short, flattened laterally on basal half and dorsoventrally on apical half; apex slightly expanded with 2–3 pairs of laterodorsal spiniform projections. Anal tube ( Fig. 8E ) with sternite X long and tubular, basal portion produced anteroventrally bearing moderately long basiventral acute teeth.

FEMALE TERMINALIA. Sternite VII ( Fig. 9A–C ) slightly wider than long; lateral margins parallel. First valvula of ovipositor ( Fig. 6F ) with dorsal sculptured area areolate-strigate. Other characters as in generic description.

Remarks

Takiyaella mejdalanii gen. et sp. nov. resembles T. cavichiolii gen. et sp. nov. and T. sexguttata gen. et comb. nov. by the apical portion of the aedeagus with lateral spiniform projections ( Figs 3K , 8K , 10J ). However, T. mejdalanii gen. et sp. nov. differs from other species of the genus by the shape of the male pygofer, strongly expanded apically ( Fig. 8E ) and by the shape and direction of the atrial processes of the aedegus ( Fig. 8J–K ).

Figures

Fig. 8. Takiyaella mejdalanii gen. et sp. nov., ♂, holotype (DZRJ-AUCH #246). A. Head and thorax, dorsal view. B. Head, frontal view. C. Head and thorax, lateral view. D. Forewing. E. Pygofer and anal tube, lateral view. F. Valve and subgenital plate, lateral view. G. Valve and subgenital plate, ventral view. H. Styles and connective, dorsal view. I. Style, lateral view. J. Aedeagus, lateral view. K. Aedeagus, caudal view. Scale bars: A–C = 1.0 mm; D = 2.0 mm; E–I = 0.5 mm; J–K = 0.4 mm.

Fig. 9. Takiyaella mejdalanii gen. et sp. nov., ♀, paratype (DZRJ-AUCH #247). A. Posterior portion of abdomen, ventral view. B. Posterior portion of abdomen, lateral view. C. Sternite VII, ventral view. D. Pygofer and anal tube, lateral view. E. First valvula of ovipositor, lateral view. F. Apex of first valvula, lateral view. G. Second valvula of ovipositor, lateral view. H. Apex of second valvula, lateral view. I. Second valvifer and gonoplac, lateral view. J. Apex of gonoplac, lateral view. Scale bars: A–B = 1.0 mm; C–E, G, I = 0.5 mm; F, H, J = 0.3 mm.

Fig. 12. Habitus of type specimens, dorsal and lateral view, respectively. A–B. Takiyaella anomala gen. et sp. nov., ♂, holotype (DZRJ-AUCH #238). C–D. T. cavichiolii gen. et sp. nov., ♂, holotype (DZUP 492451). E–F. T. coelhomarquesae gen. et sp. nov., ♂, holotype (DZUP-083605). G–H. T. daniela gen. et sp. nov., ♂, holotype (DZRJ-AUCH #244). I–J. T. mejdalanii gen. et sp. nov., ♂, holotype (DZRJ- AUCH #246). K–L. T. sexguttata (Chiamolera & Cavichioli, 2003) gen. et comb. nov., ♂, holotype (DZUP-082927). M. Labels of the holotype of Xenocoelidia sexguttata. Scale bars: A–L = 2.0 mm.

Fig. 13. Distribution map of all known species of Takiyaella gen. nov.

Fig. 6. Takiyaella coelhomarquesae gen. et sp. nov., ♀, paratype (DZUP-083606). A. Posterior portion of abdomen, ventral view. B. Posterior portion of abdomen, lateral view. C. Sternite VII, ventral view. D. Pygofer and anal tube, lateral view. E. First valvifer and first valvula of ovipositor, lateral view. F. Apex of first valvula, lateral view. G. Second valvula of ovipositor, lateral view. H. Apex of second valvula, lateral view. I. Second valvifer and gonoplac, lateral view. J. Apex of gonoplac, lateral view. Scale bars: A–B = 1.0 mm; C–E, G, I = 0.5 mm; F, H, J = 0.3 mm.

Fig. 3. Takiyaella cavichiolii gen. et sp. nov., ♂, holotype (DZUP 492451). A. Head and thorax, dorsal view. B. Head, frontal view. C. Head and thorax, lateral view. D. Forewing. E. Pygofer, lateral view. F. Valve and subgenital plate, lateral view. G. Valve and subgenital plate, ventral view. H. Style and connective, dorsal view. I. Style, lateral view. J. Aedeagus, lateral view. K. Aedeagus, caudal view. L. Aedeagus, ventral view. M. Anal tube, lateral view. Scale bars: A–C = 1.0 mm; D = 2.0 mm; E–I, M = 0.5 mm; J–L = 0.4 mm.

Fig. 10. Takiyaella sexguttata (Chiamolera & Cavichioli, 2003) gen. et comb. nov., ♂, holotype (DZUP-082927). A. Head and thorax, dorsal view. B. Head, frontal view. C. Head and thorax, lateral view. D. Pygofer, lateral view. E. Valve and subgenital plate, lateral view. F. Valve and subgenital plate, ventral view. G. Styles and connective, dorsal view. H. Style, lateral view. I. Aedeagus, lateral view. J. Aedeagus, caudal view. K. Aedeagus, ventral view. L. Anal tube, lateral view. Scale bars: A–C = 1.0 mm; D–H, L = 0.5 mm; I–K = 0.4 mm.