Takiyaella, 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: 36-38

publication ID

https://doi.org/10.5852/ejt.2021.775.1545

publication LSID

lsid:zoobank.org:pub:3084F3F6-F249-4E76-8B79-87DDACDC7934

DOI

http://doi.org/10.5281/zenodo.5578460

persistent identifier

http://treatment.plazi.org/id/6E1BFF39-D305-4E7C-982E-D315E686A299

taxon LSID

lsid:zoobank.org:act:6E1BFF39-D305-4E7C-982E-D315E686A299

treatment provided by

Felipe

scientific name

Takiyaella
status

gen. nov.

Genus Takiyaella   gen. nov.

urn:lsid:zoobank.org:act:6E1BFF39-D305-4E7C-982E-D315E686A299

Figs 1–13 View Fig View Fig View Fig View Fig View Fig View Fig View Fig View Fig View Fig View Fig View Fig View Fig View Fig

Type-species

Takiyaella daniela   gen. et sp. nov.

Diagnosis

Medium-sized leafhoppers ( Fig. 12 View Fig ). Head ( Figs 1A View Fig , 7A View Fig , 8A View Fig ) slightly produced anteriorly, with crown-face transition rounded, without carina; lateral margins of crown, adjacent to eyes, elevated and not carinated. Antennal ledge ( Fig. 1B View Fig ) narrow, slightly prominent and weakly carinated. Forewing ( Figs 1D View Fig , 7D View Fig ) with two or three dark maculae on claval commissure; crossvein ʻsʼ missing. Male pygofer ( Figs 3E View Fig , 8E View Fig ) approximately rectangular, ventral margin with sclerotized subapical serrated tooth; caudal margin usually with ventral rounded lobe. Subgenital plates ( Figs 1G View Fig , 8G View Fig ) fused to each other along the basal two-thirds; ventral surface with few apical macrosetae. Connective ( Figs 1H View Fig , 3H View Fig ) Y- or V-shaped. Aedeagus ( Figs 1J View Fig , 7J View Fig , 8J View Fig ) with one or two pairs of atrial processes, gonopore apical. Second valvula of ovipositor ( Figs 4G View Fig , 9G View Fig ) fused to each other just near base, dorsal margin with several irregular small teeth.

Etymology

The generic name Takiyaella   (feminine noun) is a tribute to Prof. Dr Daniela Maeda Takiya in recognition of her remarkable contribution to our knowledge of the Brazilian Auchenorrhyncha   .

Description

HEAD AND THORAX. Head, in dorsal view ( Figs 1A View Fig , 7A View Fig ), slightly produced anteriorly, median length of crown approximately equal or slightly less than interocular width; transocular width about 4 /5 humeral width of pronotum; crown subrectangular, anterior margin rounded, surface flat, texture shagreen; ocellus medium-sized, on anterior margin of head, distant from eye margin, visible in dorsal view; coronal maculae distinct at basal half, between midline and eyes; coronal suture distinct in basal third, evanescent anteriorly. Head, in frontal view ( Figs 1B View Fig , 10B View Fig ), with face slightly higher than wide; frontogenal suture extending to antennal ledge but not reaching ocellus; antennal ledge narrow, slightly prominent, oblique and weakly carinated; frons approximately 1.8 × as long as wide; muscle impressions indistinct; epistomal suture distinct but incomplete, evanescent medially; clypeus 1.5 × as long as maximum width, lateral margins parallel, apex slightly emarginated; maxillary plate produced ventrally, reaching clypeus apex; lorum ellipse-shaped, apical margin not reaching apex of clypeus; gena incompletely covering episternum. Head, in lateral view ( Figs 1C View Fig , 3C View Fig ), with crown-face transition rounded, without carina; lateral margins of crown, adjacent to eyes, elevated and not carinated; antennal pits at same level as an imaginary line tangent to anteroventral angles of eyes; antenna with long flagellum, exceeding half-length of forewing; frons convex. Pronotum ( Figs 1A View Fig , 5A View Fig ) with inconspicuous transverse striae on disc; lateral margins rounded, convergent anterad, and slightly shorter than eye length; posterior margin roundly excavated; in lateral view ( Figs 1C View Fig , 8C View Fig ), slightly declivous; dorsopleural carina present and complete. Mesonotum ( Fig. 8A View Fig ) as long as wide. Forewing ( Figs 1D View Fig , 7D View Fig ) mostly semi-hyaline, except for apical cells and apex of anteapical cells hyaline, 3.5 × as long as maximum width; venation indistinct, except apically; two anteapical cells, crossvein sectorial ʻsʼ missing; four apical cells: first to third approximately rectangular, third enlarged apically, fourth rhomboid, base of second more proximal than base of third; appendix narrow; apex rounded. Hind wing with vein R 4+5 and M 1+2 preapically convergent, fused to each other at apex, forming single vein. Profemur with AD, AM, and PD rows reduced and poorly defined, with exception of apical setae AD 1, AM 1, and PD 1, respectively; AV and PV rows absent; IC row formed by slightly arched comb of fine setae, beginning at distal half of femur and extending to apex. Protibia, in cross-section, semi-circular; AV row formed by approximately 20 setae, slightly longer and thicker towards apex; AD and PD rows without differentiated setae; PV row with 2–3 widely spaced setae. Metafemur with setal formula 2:2:1, with inner setae of second pair reduced in size. Metatibial AD row with 2– 4 intercalary setae between macrosetae; PD, AD, and PV rows with 13– 15, 10–12, and 28–32 macrosetae, respectively; AV row with approximately 11 macrosetae distributed along most of tibia, except in the proximal and distal portions. Metatarsomere I longer than combined length of two distal tarsomeres; plantar surface with two rows of setae, external row with longer and robust setae than inner row; pecten with five platellae. Metatarsomere II pecten with three platellae.

MALE TERMINALIA. Pygofer ( Figs 1E View Fig , 3E View Fig , 5E View Fig ) approximately rectangular, usually apically expanded with an apical ventral lobe; macrosetae absent; ventral margin little sclerotized medially, with a sclerotized and serrated tooth on apical portion. Valve ( Figs 1G View Fig , 8G View Fig ) without indication of separation with subgenital plates. Subgenital plate ( Figs 3G View Fig , 5G View Fig ) not exceeding pygofer apex; plates fused to each other along the basal two-thirds; ventral surface with few apical macrosetae; in lateral view ( Figs 1F View Fig , 7F View Fig ), deeply concave. Connective ( Figs 1H View Fig , 7H View Fig ) Y- or V-shaped, articulated to aedeagus base, not bifurcated at the point of articulation. Style ( Figs 1I View Fig , 8I View Fig ) with apodeme expanded; ventral margin with median lobe; preapical setae present; preapical lobe moderately developed, slightly produced posterad; apex curved ventrally, hook-shaped. Aedeagus ( Figs 1J–K View Fig , 5J–K View Fig ) with preatrium long and robust; atrium with one or two pairs of processes; shaft curved dorsoanteriorly, usually expanded at apex; gonopore apical. Anal tube ( Figs 3M View Fig , 5L View Fig , 8E View Fig ) cylindrical, usually with small basiventral process with denticles.

FEMALE TERMINALIA. Sternite VII ( Figs 2C View Fig , 4C View Fig , 6C View Fig , 9C View Fig , 11A View Fig ) subquadrangular; posterior margin widely rounded. ʻInternalʼ sternite VIII membranous. Pygofer ( Figs 2D View Fig , 4D View Fig , 6D View Fig , 9D View Fig , 11B View Fig ) elongate, 1.7 × as long as maximum height; macrosetae distributed near apex and ventral margin. First valvifer ( Figs 2E View Fig , 4E View Fig , 6E View Fig , 9E View Fig , 11C View Fig ) higher than long, dorsal margin straight, posterior margin slightly oblique. First valvula of ovipositor ( Figs 2E View Fig , 4E View Fig , 6E View Fig , 9E View Fig , 11C View Fig ) elongated, moderately curved dorsally; dorsal sculptured area submarginal, present throughout apical half; apex ( Figs 2F View Fig , 4F View Fig , 6F View Fig , 9F View Fig , 11D View Fig ) acute. Second valvifer ( Figs 2I View Fig , 4I View Fig , 6I View Fig , 9I View Fig , 11G View Fig ) higher than long. Second valvula of ovipositor ( Figs 2G View Fig , 4G View Fig , 6G View Fig , 9G View Fig , 11E View Fig ) elongated, moderately curved dorsally in the apical half, fused to each other just near base; apical portion ( Figs 2H View Fig , 4H View Fig , 6H View Fig , 9H View Fig , 11F View Fig ) slightly expanded, dorsal margin with several irregular small teeth. Gonoplac ( Figs 2I View Fig , 4I View Fig , 6I View Fig , 9I View Fig , 11G View Fig ) expanded on apical half; external surface along ventral margin and apex with dentiform cuticular projections and few short and robust setae; apex ( Figs 2J View Fig , 4J View Fig , 6J View Fig , 9J View Fig , 11H View Fig ) rounded or acutely rounded.

Distribution

Brazil (states of Minas Gerais, Paraná and Rio de Janeiro). Species of Takiyaella   gen. nov. occur in southern and southeastern Brazil, in the Atlantic Rainforest biome ( Fig. 13 View Fig ).

Remarks

Takiyaella   gen. nov. shares some similarities with Paraphysiana Chiamolera, Cavichioli & Anderle, 2003   as follows: (1) crown with anterior margin rounded; (2) crown-face transition without carina; (3) frontogenal suture not reaching ocellus; (4) antennal ledge narrow and slightly prominent; (5) pronotum with posterior margin roundly excavated; and (6) forewing with dark maculae along the anal margin.

However, the new genus can be easily separated from Paraphysiana   due to hind wing with veins R 4+5 and M 1+2 preapically convergent, fused at apex, forming single vein, whereas in Paraphysiana   R 4+5 and M 1+2 are convergent, fused to each other, but they are divergent apically; pygofer without inner ventral processes (present in Paraphysiana   ); subgenital plates without dorsal tooth (present in Paraphysiana   ); style with preapical lobe moderately developed, whereas in Paraphysiana   it is strongly developed and produced caudally; paraphysis absent (present in Paraphysiana   ); and the aedeagus with atrial processes (absent in Paraphysiana   ).