Costanana alata, Domahovski & Cavichioli, 2023

Domahovski, Alexandre C. & Cavichioli, Rodney R., 2023, Eight new species of Costanana DeLong & Freytag (Hemiptera: Cicadellidae: Gyponini): taxonomic changes, key to males, and description of Metacostana gen. nov., European Journal of Taxonomy 889 (1), pp. 1-53 : 5-7

Costanana alata sp. nov.

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Figs 1 , 11A–B

Diagnosis

Coloration ( Fig. 11A ) of head and pronotum brown with small black maculae, forewing costal margin with narrow light yellow macula on anterior third and small depigmented (white) macula on apical third. Style ( Fig. 1K ) with dentiform ventral process near base of blade; apex truncated, forming pair of acute processes directed dorsally and ventrally. Aedeagus ( Fig. 1L–M ) with pair of ventral wing-shaped processes near base; shaft with slender basodorsal process and pair of minute spurs on ventral margin.

Etymology

The species epithet ‘ alata ’ refers to the aedeagus with processes resembling wings.

Material examined

Holotype BRAZIL • ♂, “Brasil, Minas Gerais, \ Extrema, Morro do Lopo , \ 22.881ºS 46.308ºW, \ 1520m, 9.xii.2012, G. Melo \ & P. Grossi, arm.[armadilha] Luminosa ”; DZUP 215484 .

Description

Male

MEASUREMENTS. Holotype male: total length 6.8 mm.

COLORATION. Dorsal portion of head and thorax reddish-brown ( Figs 1A, C , 11A ); ventral portion yellow ( Figs 1B–C , 11B ). Crown ( Fig. 1A ) with black maculae surrounding ocelli; pair of rounded black spots behind ocelli, near posterior margin; median line and posterior margin light brown; eyes (in life) and ocelli red. Pronotum ( Fig. 1A ) with black irregular maculae and light brown spots near anterior and lateral margins; lateral margin yellow. Mesonotum with pair of dark brown maculae near lateral angles and medially; scutellum yellowish, with brown areas adjacent to scutoscutellar suture. Face ( Fig. 1B ) with frons slightly brownish dorsally. Forewing ( Fig. 1D ) with narrow light yellow macula on anterior third of costal margin and a depigmented (white) macula on costal margin at level of outer anteapical cell, and apex of third and fourth apical cells; veins outlined by dark brown. Legs ( Fig. 11B ) yellow, apex of metatibia dark brown.

STRUCTURE. Head in dorsal view ( Fig. 1A ): median length of crown as long as half interocular width; transocular width of head eight tenths humeral width of pronotum; in lateral view ( Fig. 1C ), with anterior margin moderately thick, with 5–6 well developed carinae. Forewing ( Fig. 1D ) with inner discal cell very short, one-third as long as the outer discal cell; apex slightly tapered. Profemur AV row with 3–4 setae restricted to basal half and PV row with 2 setae restricted to distal half. Protibia PD row with 3 long setae and apical PD 1 seta developed; PV row developed, with 8 setae increasing in thickness and length towards apex. Metatibia rows PD, AD, and AV with 21, 12, and 12 macrosetae, respectively. Metatarsomere I apex with 3 platellae. Metatarsomere II apex with 2 apical platellae. Other characteristics as in the generic description.

MALE TERMINALIA. Sternite VIII ( Fig. 1E ) 1.2× as wide as long; lateral margins excavated at base, forming a triangular projection and then converging towards apex, narrow and rounded. Valve ( Fig. 1F ) 3.1× as wide as long; posterior margin almost straight. Pygofer ( Fig. 1G ), in lateral view, 2.3× as long as maximum height; ventral margin with a small protrusion near base; posterodorsal and ventral margins rounded; external surface near ventral margin with short filiform setae; macrosetae distributed on apical half; apex slightly tapered and rounded. Subgenital plate ( Fig. 1G ), in lateral view, short, surpassing half length of pygofer; in ventral view ( Fig. 1H ), 5× as long as wide; inner margin straight; external margin rounded on basal third; ventral surface and external margin with long filiform setae; apex strongly tapered and weakly sclerotized. Connective ( Fig. 1I ) Y-shaped; arms weakly produced laterally; stalk about as long as maximum width of arms; median keel weakly developed. Style ( Fig. 1J ), in dorsal view, with outer lobe small and rounded; inner margin with a small dentiform process near midlength of blade; in lateral view ( Fig. 1K ), ventral margin not serrated, with dentiform process near base of blade; apex truncated, forming a pair of acute processes directed dorsally and ventrally. Aedeagus ( Fig. 1L–M ) preatrium not developed; dorsal apodeme strongly elongated laterally; shaft short, nearly tubular, with pair of ventral wing-shaped processes near base, curved dorsally with divergent and acute apices; dorsal margin of shaft with slender basodorsal process; ventral margin with pair of minute spurs subapically.

Female

Unknown.

Remarks

Costanana alata sp. nov. is most similar to C. flavina in having the same color pattern ( Figs 11A–B . 13A–B ) and the aedeagal shaft short with a pair of ventral processes near the base, not contiguous to shaft and following its curvature. The new species can easily be separated from C. flavina by having the apex of the style truncated ( Fig. 1K ) and the longer and winged ventral processes of the aedeagal shaft ( Fig. 1L–M ).

Figures

Fig. 1. Costanana alata sp. nov., holotype, ♂ (DZUP 215484). A. Head and thorax, dorsal view.B. Head, ventral view. C. Head and thorax, lateral view. D. Forewing. E–M. Male terminalia. E. Sternite VIII, ventral view. F. Valve, anterior view. G. Pygofer, valve and subgenital plate, lateral view. H. Subgenital plate, ventral view. I. Connective, dorsal view. J. Style, dorsal view. K. Style, lateral view. L. Aedeagus, lateral view. M. Aedeagus, posterior view. Scale bars in mm.

Fig. 11. Habitus of new species of Costanana DeLong & Freytag, 1972. Left, dorsal view; right, lateral view. A–B. C. alata sp. nov., holotype, ♂ (DZUP 215484). C–D. C. bifida sp. nov., holotype, ♂ (DZUP 215493). E–F. C. cifi sp. nov., holotype, ♂ (DZUP 215484). G–H. C. luzi sp. nov., holotype ♂ (DZUP 215489). Scale bars in mm.

Fig. 13. Habitus of species of Costanana DeLong & Freytag, 1972. Left, dorsal view; right, lateral view. A–B. C. flavina DeLong & Freytag, 1972 (DZUP). C–D. C. praecellens (Stål, 1862) (DZUP). E–F. C. santana DeLong & Wolda, 1983 (DZUP). Scale bars in mm.