Costanana rubromarginata, 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 : 22-23

Costanana rubromarginata sp. nov.

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Figs 9 , 12E–F

Diagnosis

Coloration ( Fig. 12E ) of crown black with anterior margin red, 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. 9K ) slender and slightly broadened subapically, without processes near base of blade or apical portion. Aedeagus ( Fig. 9L–M ) shaft long and slender, cylindrical, curved anterad, without apical or subapical processes; pair of long and slender processes arising from basal third, parallel to shaft and slightly surpassing apex, abruptly enlarged at midlength.

Etymology

The species epithet refers to the anterior margin of head being red.

Material examined

Holotype BRAZIL • ♂; “Brasil, MT [Mato Grosso], Cotriguaçu, \ Fazenda São Nicolau , 09.8559ºS, 58.2486ºW, \ 230m, sweep, 26-29.vi. \ 2017, A.C. Domahovski ”; DZUP 215491 .

Paratype BRAZIL – Pará • 1 ♂; “Brasil Pará Benevides \ Benfica \ 08.VII.2017 Varredura \ W. F. Lima ”, “CZDC UEPA \ 00012313 ”; CZJA .

Description

Male

MEASUREMENTS. Holotype male: total length 5.0 mm. Paratype male (n = 1) 5.0 mm.

COLORATION. Dorsal portion head and thorax reddish-brown ( Figs 9A, C , 12E ); ventral portion yellow ( Figs 9B–C , 12F ). Crown ( Fig. 9A ) black; anterior margin red; ocelli red. Face ( Fig. 9B ) with frons black; lorum black to dark brown; gena dark brown between eye and frons; clypeus dark brown except apex yellow. Pronotum ( Fig. 9A ) with black irregular maculae near anterior and lateral margins; lateral margins yellow. Mesonotum ( Fig. 9A ) lateral angles black; pair of black maculae submedially. Forewing ( Fig. 9D ) costal margin with elongate narrow light yellow macula on anterior third, small depigmented (white) macula on outer apical cell, remaining portion black; veins outlined by dark brown; outer half of corium, apex and appendix smoky. Legs ( Fig. 11B ) yellow, without black markings.

STRUCTURE. Head in dorsal view ( Fig. 9A ): median length of crown as long as half interocular width; transocular width of head 8.5 tenths humeral width of pronotum; in lateral view ( Fig. 9C ), with anterior margin moderately thick, with 5–6 well developed carinae. Forewing ( Fig. 9D ) with inner discal cell half long as outer discal cell; apex rounded. Profemur AV row with 4–5 setae restricted to basal half and PV row with 1 apical seta. 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 20–23, 12, and 13 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. 9E ) 1.1× as wide as long; lateral margins excavated at base, forming a triangular projection and then converging to rounded apex. Valve ( Fig. 9F ) 1.6× as wide as long; posterior margin rounded. Pygofer ( Fig. 9G ), in lateral view, 2× as long as maximum height; ventral margin broadly rounded; posterodorsal margin approximately straight; external surface near ventral margin with short filiform setae; macrosetae distributed on posterodorsal quadrant; apex slightly tapered and almost truncate. Subgenital plate ( Fig. 9G ), in lateral view, surpassing half length of pygofer; in ventral view ( Fig. 9H ), 4× as long as wide; lateral margins slightly rounded; ventral surface and external margin with long filiform setae; apex tapered and weakly sclerotized. Connective ( Fig. 9I ) T-shaped; arms weakly produced laterally; stalk narrow, slightly shorter than maximum width or arms; median keel weakly developed. Style ( Fig. 9J ), in dorsal view, with outer lobe well developed, rounded; in lateral view ( Fig. 9K ), blade slender, evenly curved dorsally, slightly broadened subapically; ventral margin not serrated; apex tapered, curved dorsally and acute. Aedeagus ( Fig. 9L–M ) preatrium not developed; dorsal apodeme weakly produced laterally, dorsal margin straight; shaft long and slender, cylindrical, curved anterad; pair of long and slender processes arising from basal third, parallel to shaft and slightly surpassing apex, enlarged at midlength and thin and acute apically; shaft without apical or subapical processes.

Female

Unknown.

Remarks

Costanana rubromarginata sp. nov. is similar to C. helvacosta , C. nana and C. santana in having the aedeagus with the shaft long and slender, with the pair of processes arising near the base of the shaft and without processes distally ( Fig. 9L–M ). The shape of the apex of the style, slightly expanded subapically ( Fig. 9K ), is most similar to that of C. nana , but the new species is separated in having the pair of lateral processes abruptly expanded medially and not parallel to the shaft along the entire length as in C. nana .

Figures

Fig. 9. Costanana rubromarginata sp. nov., holotype, ♂ (DZUP 215491). 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. 12. Habitus of new species of Costanana DeLong & Freytag, 1972. Left, dorsal view; right, lateral view. A–B. C. obtusa sp. nov., holotype, ♂ (DZUP 215492). C–D. C. piraquarensis sp. nov., holotype, ♂ (DZUP 215485). E–F. C. rubromarginata sp. nov., holotype, ♂ (DZUP 215491). G–H. C. xenomorpha sp. nov., holotype, ♂ (MUSM). 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.