Domahovana, Silva & Gonçalves & Takiya, 2022

Silva, Marcelo Peixoto Gomes Da, Gonçalves, Clayton Corrêa & Takiya, Daniela Maeda, 2022, A new genus and four new species of Gyponini (Insecta: Hemiptera: Cicadellidae) with long ovipositors from Amazonas, Brazil, Zootaxa 5168 (2), pp. 158-174 : 159-161

Domahovana gen. nov.

( Figs 1 –84)

Diagnosis Medium-sized leafhoppers. Dorsum ( Figs 1 , 5, 9, 11) mostly dull to golden yellow; with distinct pair of post-ocellar spots, pair of lateral spots on pronotum behind eyes, and pair of spots at base of clavus on forewings, black. Crown ( Figs 1 , 5, 9, 11) short, with anterior margin rounded, both transversely striated. Ocelli slightly closer to anterior margin and equidistant from median line and eyes. Forewing (Figs 16, 36, 56, 77) with venation distinct, without extra crossveins; m-cu 1 crossvein absent; m-cu 2 crossvein basad of r-m 1 crossvein for a long distance; appendix well developed. Metatibia row AD without intercalary setae. Male pygofer (Figs 18, 38, 58, 79) without process. Male sternite VIII (Figs 17, 37, 57, 78) often covering subgenital plate only up to its middle third. Subgenital plate (Figs 18–19, 38–39, 58–59, 79–80), short, wide at base and strongly tapered towards apex; ventral surface covered by long hair-like setae. Connective (Figs 20, 40, 60, 81) Y-shaped. Style (Figs 21, 41, 61, 82) long and narrow; ventral margin with small tooth at middle third. Aedeagus (Figs 22–23, 42–43, 62–63, 83–84) with dorsal apodeme developed and expanded laterally, without processes; atrium with single or paired ventral digitiform processes (may have an additional spiniform pair more dorsally); shaft short and without processes. Ovipositor elongated ( Figs 24 –25, 44–45, 65–66); first and second valvulae and gonoplac (Figs 28–34, 48–54, 69–75) straight and very narrow; second valvula (Figs 32, 52, 73) with few small denticles preapically on dorsal margin, without larger widely spaced teeth.

Description. Crown ( Figs 1 , 5, 9, 13) slightly produced anteriorly; median length approximately half length of interocular and one-fifth of transocular width; anterior margin rounded; surface slightly concave near ocelli; texture with fine parallel transverse striations, more evident towards posterior margin. Ocelli slightly closer to anterior margin and equidistant between midline and eyes. Coronal suture distinct only at posterior half. Face ( Figs 15 , 35 , 55 , 76 ) wider than long. Frontogenal suture distant from eye margin by basal width of clypeus, not extending dorsally beyond antennal ledge. Antennal ledge carinated, obliquely descending and slightly extended over frons. Frons slightly swollen and concave below anterior margin of crown, approximately as wide as long. Epistomal suture distinct, but incomplete, evanescent medially. Clypeus longer than wide, lateral margins parallel. Gena and maxillary plate strongly narrowed ventrally. Crown-face transition (Figs 2, 6, 10, 14) defined and thick; with four to five distinct transverse striae. Pronotum (Figs 3, 7, 11, 13) with transhumeral width slightly greater than transocular width; lateral margins convergent anteriorly; posterior margin slightly excavated; disk transversely striated; in lateral view (Figs 4, 8, 12), rounded and moderately declivous anteriorly, head and pronotum in continuous slope. Mesonotum (Figs 3, 7, 11) wider than long. Scutellum, in lateral view (Figs 2, 4, 6), slightly inflated. Forewing (Figs 16, 64, 77) hyaline; venation distinct, without extra crossveins; m-cu 1 crossvein absent; m-cu 2 crossvein basad of r-m 1 crossvein for a long distance; apex rounded; appendix well developed, as wide as maximum width of first apical cell. Profemur with rows AD, AM, and PD reduced and poorly defined, except for apical setae AD 1, AM 1, and PD 1 respectively; AV restricted to basal half composed of three to six setae; PV composed of four setae, three basal setae and one on apical third; IC formed by a fine comb row of approximately 15 short setae, uniform from basal third towards AM 1. Protibia cylindrical and not carinate; AV formed by approximately 16 short, thin setae that increase in size towards apex, apical setae slightly longer than diameter of protibia; AD formed by thin, short, and undifferentiated setae, except for apical setae; PD formed by four or five (on females) elongated setae distributed equidistantly; PV formed by approximately five to nine setae at middle portion, with one shorter and thinner proximal seta. Metafemur with setal formula 2:2:1. Metatibia with AD formed by approximately 13 macrosetae without intercalary setae; AV, PD and PV formed by approximately 14, 22, and 50 macrosetae respectively. Metatarsomere I with row of short non-cucullate setae; apex with four platellae between acute setae on each side. Metatarsomere II apex with three platellae.

Male terminalia. Sternite VIII (Figs 17, 37, 57, 78) subtriangular, lateral margins converging towards apex; covering subgenital plates up to their middle third. Pygofer, in lateral view (Figs 18, 38, 58, 79), subtriangular; dorsal margin straight; ventral margin rounded, concave basally; without processes; numerous macrosetae distributed at apical half. Valve subrectangular; integument thickening present on anterior margin; often forming a median line. Subgenital plate (Figs 18, 38, 58, 79) short, extending to midlength of pygofer; in ventral view (Figs 19, 39, 59, 80), subtriangular, wide at base, with rounded outer lobe, strongly tapered towards apex; ventral surface covered by long hair-like setae. Connective (Figs 20, 40, 60, 81) Y-shaped, with robust arms. Style approximately four times length of connective; in dorsal view (Figs 20, 40, 60, 81), with reduced outer lobe; in lateral view (Figs 21, 41, 61, 82), long and narrow; ventral margin excavated in basal portion, preceding a medial tooth, apex acuminate and curved dorsally. Aedeagus (Figs 22–23, 42–43, 62–63, 83–84) with dorsal apodeme well developed and expanded laterally, without processes; atrium with one or pair of ventral digitiform processes (arrows in Figs 23, 43, 63, 84) and may have another dorsal spiniform pair (in Domahovana icamiabas sp. nov.); shaft short and without processes; apical gonopore.

Female terminalia. Sternite VII ( Figs 24 , 26, 44, 46, 65, 67) wider than long; posterior margin deeply notched medially. Pygofer (Figs 25, 27, 45, 47, 66, 68) elongate, about 2.5 times longer than maximum height; apex acutely rounded. Ovipositor elongated ( Figs 24 –25, 44–45, 65–66); first and second valvulae and gonoplac (Figs 28–34, 48–54, 69–75) straight and very narrow. First valvifer (Figs 28–29, 48–49, 69–70) subrectangular, twice as tall as long; posterior margin slightly concave. First valvula (Figs 28–29, 48–49, 69–70) with dorsal sculptured area strigate from base to apex, basal region with striae more spaced; apex (Figs 30, 50, 71) acutely rounded and with areolate sculpture. Second valvifer (Figs 31, 33, 53, 74) subtriangular and higher than long. Second valvula (Figs 31–32, 51–52, 72–73) with about ten irregular preapical dorsal denticles; apex rounded. Gonoplac (Figs 33–34, 53–54, 74–75) outer surface with dentiform cuticular projections and scattered short setae; apex rounded.

Distribution. Brazil (Amazonas State).

Etymology. The generic name is feminine and is a tribute to Dr. Alexandre Cruz Domahovski for his efforts and contribution to the knowledge of neotropical Iassinae , mainly of Gyponini . The suffix - ana is common in generic names of gyponine leafhoppers.

Notes. Specimens of Domahovana gen. nov. resemble those belonging to Polana DeLong, 1942 . In particular, the new genus resembles species of the subgenus Polanana DeLong & Freytag, 1972 because of the absence of pygofer processes, the aedeagus without apodemal processes, and, at least in the type-species P. venosa (Stål, 1854) , forewing m-cu 2 crossvein basad of r-m 1 (a very uncommon characteristic in Gyponini ). Males of Domahovana gen. nov. will key to Costanana DeLong & Freytag, 1972 in DeLong & Freytag’s (1972) key to genera of Gyponini . However, currently Costanana is most likely polyphyletic and includes species that are very variable in important generic diagnostic characters, such as the male pygofer with and without dorsal processes and the aedeagus with or without apical shaft processes or atrial processes.

All three genera have a short crown with parallel transverse striations, the crown-face transition with striae, and the forewing appendix well developed. However, Domahovana shares with Polana the ocelli closer to the anterior than posterior crown margin, but can be distinguished from the latter by the metatibia AD row without intercalary setae and the subgenital plates strongly narrowed toward the apex. Furthermore, Domahovana shares with Costanana the subgenital plates elongated with tapered apices, but can be distinguished from the latter by the crown with a pair of post-ocellar spots, male pygofer without a finger-like dorsal process, and aedeagus without apical processes (variable in Costanana ).

Figures

FIGURES 1─8. Domahovana gen. nov. habitus of type specimens, dorsal and lateral view respectively. 1─2 Domahovana icamiabas sp. nov. male holotype (INPA). 3─4 Domahovana icamiabas sp. nov. female paratype (INPA). 5─6 Domahovana mani sp. nov. male holotype (INPA). 7─8 Domahovana mani sp. nov. female paratype (INPA).

FIGURES 15─23. Domahovana icamiabas sp. nov. male holotype (INPA). 15, head and thorax, ventral view. 16, forewing. 17, sternite VIII, ventral view. 18, pygofer, valve, and subgenital plate, lateral view. 19, subgenital plate, ventral view. 20, styles and connective, dorsal view. 21, style, lateral view. 22, aedeagus, caudal view. 23, aedeagus, lateral view.

FIGURES 24─34. Domahovana icamiabas sp. nov. female paratype (INPA). 24, posterior portion of abdomen, ventral view. 25, posterior portion of abdomen, lateral view. 26, sternite VII, ventral view. 27, pygofer, lateral view. 28, first valvifer and first valvulae, ventral view. 29, first valvifer and first valvula, lateral view. 30, apical portion of first valvula, lateral view. 31, second valvifer and second valvulae, lateral view. 32, apical portion of second valvula, lateral view. 33, second valvifer and gonoplac, lateral view. 34, apical portion of gonoplac, lateral view.

FIGURES 35─43 Domahovana mani sp. nov. male holotype (INPA). 35, head and thorax, ventral view. 36, forewing. 37, sternite VIII, ventral view. 38, pygofer, valve, subgenital plate, and anal tube, lateral view. 39, subgenital plate, ventral view. 40, styles and connective, dorsal view. 41, style, lateral view. 42, aedeagus, caudal view. 43, aedeagus, lateral view.

FIGURES 55─63. Domahovana naia sp. nov. male holotype (INPA). 55, head, ventral view. 56, forewing. 57, sternite VIII, ventral view. 58, pygofer, valve, subgenital plate and anal tube, lateral view. 59, subgenital plate, ventral view. 60, styles and connective, dorsal view. 61, style, lateral view. 62, aedeagus, caudal view. 63, aedeagus, lateral view.

FIGURES 76─84. Domahovana yamurikuma sp. nov. male holotype (INPA). 76, head and thorax, ventral view. 77, forewing. 78, sternite VIII, ventral view. 79, pygofer, valve, and subgenital plate, lateral view. 80, subgenital plate, ventral view. 81, styles and connective, dorsal view. 82, style, lateral view. 83, aedeagus, caudal view. 84, aedeagus, lateral view.