Costanana piraquarensis, 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 : 20-22

Costanana piraquarensis sp. nov.

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Figs 8 , 12C–D

Diagnosis

Coloration ( Fig. 12C ) of head and pronotum dark brown with black maculae, forewing costal margin with broad light yellow macula on anterior third and large depigmented (white) macula on apical third. Style ( Fig. 8K ) with ventral dentiform process near base of blade; apex abruptly tapered and acute. Aedeagus ( Fig. 8L–M ) without processes near base; shaft moderately slender, with pair of long filiform subapical processes directed basally, almost as long as shaft length; apex weakly compressed, subacute.

Etymology

The new species name refers to the municipality of Piraquara, where the holotype was collected.

Material examined

Holotype BRAZIL • ♂; “Brasil, PR [Paraná], Piraquara, \ Mananciais da Serra , \ 25.4967ºS, 48.9839ºW, \ 1010m, malaise \ 01-16.II.2019, G. Melo \ & A. Martins leg.”; DZUP 215485 .

Description

Male

MEASUREMENTS. Holotype male: total length 6.9 mm.

COLORATION. Dorsal portion of head and thorax brown ( Figs 8A, C , 12C ); ventral portion yellow ( Figs 8B–C , 12D ). Crown ( Fig. 8A ) reddish-brown; transverse black stripe interrupted medially over median line; pair of rounded black spots behind ocelli, near posterior margin; eyes and ocelli red. Pronotum ( Fig. 8A ) dark brown; black irregular maculae and reddish-brown areas near anterior margin; lateral margin yellow. Mesonotum lateral angles dark brown. Face ( Fig. 8B ) with frons brownish, dorsal portion black, short black stripes over muscle impressions; gena black between eye and frons. Forewing ( Fig. 8D ) with large triangular light yellow macula on anterior third of costal margin and large rounded depigmented (white) macula at level of outer anteapical cell; remaining portion of costal cell, apical cells, apex of clavus and appendix dark brown; apical margin whitish. Legs ( Fig. 12D ) yellow; apex of metatibia dark brown.

STRUCTURE. Head in dorsal view ( Fig. 8A ): median length of crown slightly shorter than interocular width; transocular width of head eight tenths humeral width of pronotum; in lateral view ( Fig. 8C ), with anterior margin thick, with 5–6 well developed carinae. Forewing ( Fig. 8D ) inner discal cell open, m-cu 2 crossvein absent; apex broadly rounded. Profemur AV row with 3–4 setae restricted to basal half and PV row with 1 apical seta. Protibia PD row with 4 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 24–25, 14, and 15 macrosetae, respectively. Metatarsomere I apex with 4 platellae. Metatarsomere II apex with 2 apical platellae. Other characteristics as in the generic description.

MALE TERMINALIA. Sternite VIII ( Fig. 8E ) 1.1× as wide as long; lateral margins excavated at base, forming a triangular projection and then converging to rounded apex. Valve ( Fig. 8F ) 2.7× as wide as long; posterior margin almost straight. Pygofer ( Fig. 8G ), in lateral view, 1.8× as long as maximum height; basodorsal process present but weakly developed; ventral margin with rounded protrusion near basal third; posterodorsal and ventral margins straight; external surface near ventral margin with short filiform setae; macrosetae distributed on posterodorsal quadrant; apex broad and truncate. Subgenital plate ( Fig. 8G ), in lateral view, slightly surpassing half length of pygofer; in ventral view ( Fig. 8H ), 3.2× as long as wide; inner margin straight; external margin slightly rounded; ventral surface and external margin with long filiform setae; apex tapered and weakly sclerotized. Connective ( Fig. 8I ) linear; arms not produced laterally; stalk very broad, slightly longer than maximum width of arms; median keel weakly developed. Style ( Fig. 8J ), in dorsal view, with outer lobe reduced and rounded; in lateral view ( Fig. 8K ), blade broadened medially; ventral margin not serrated, with dentiform process near base of blade; apex abruptly tapered, slightly directed dorsally, acute. Aedeagus ( Fig. 8L–M ) preatrium not developed; dorsal apodeme elongated laterally, forming divergent and truncated apices; shaft slender, curved dorsally; pair of long subapical filiform processes directed basally, almost as long as shaft length; apex compressed, subacute.

Female

Unknown.

Remarks

Costanana piraquarensis sp. nov. is separated from C. obtusa sp. nov. in having the following differences: (1) apex of pygofer truncated ( Fig. 8G ); (2) connective shorter ( Fig. 8I ); (3) style with apex acute ( Fig. 8K ); (4) aedeagal shaft wider ( Fig. 8L–M ); and (5) subapical pair of processes lacking spurs near base ( Fig. 8M ). See also the remarks on C. obtusa .

Figures

Fig. 8. Costanana piraquarensis sp. nov., holotype, ♂ (DZUP 215485). 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.