Culumana maculosa, Domahovski, 2024

Domahovski, Alexandre Cruz, 2024, A new species of Culumana DeLong & Freytag (Hemiptera: Cicadellidae: Gyponini) from Peru, with two new combinations, Zootaxa 5523 (5), pp. 593-600 : 595-597

Culumana maculosa sp. nov.

( Figs 1 , 2 )

Diagnosis. Coloration ( Fig. 1 ) yellow ventrally and dark-brown to black dorsally, with several small yellow spots. Pygofer ( Fig. 2G, H ) with long unciform processes on dorsal margin, posterior margin strongly excavated ventrally, forming a dorsal broad and rectangular apical portion. Style ( Fig. 2K ) ventral margin of blade weakly excavated; basal portion with a small tooth-like process directed anterad; apical portion foot-shaped. Aedeagus ( Fig. 2M, N ) with lateral pair of processes on apical third, surpassing apex of shaft, flattened, with two subapical spurs; apex slightly membranous with pair rounded lobes.

Measurements. Holotype male: total length 11.6 mm.

Coloration. Dorsum dark-brown to black, venter yellow ( Fig. 1 ). Head ( Fig. 2A ) with crown black; anterior margin yellow; posterior margin with small pair of yellow spots. Head ( Fig. 2B ), in ventral view, with large black macula over epistomal suture extending medially to clypeus apex. Pronotum ( Fig. 2A ) black to dark-brown, with several yellow spots; in lateral view, proepimeron with dorsal and anterior margins bright-yellow, disc brownish-yellow with a dorsal blackened spot. Mesonotum ( Fig. 2A ) dark-brown with black irregular spots; three bright-yellow pairs of spots forming two triangles: two pairs near anterior margin and one pair near scutoscutelar suture. Forewing ( Fig. 2G ) with brownish-yellow veins and several yellow spots; black maculae on m-cu1, m-cu2 and apex of anal veins. Legs ( Figs 1B , 2B ) with femora with a large black macula on apical third; tibiae with apical portion blackened; metatibia with bases of macrosetae black.

Description. Body ( Fig. 1 ) elongated, not flattened dorsoventrally. Head ( Figs 1A , 2A ), in dorsal view, not produced; median length of crown 1\4 of interocular width; crown with transverse parallel striae, anterior margin of crown parallel to posterior margin; transocular width of head 8.5 tents of humeral width of pronotum; ocelli equidistant between eyes and median line and near to anterior than to posterior margin of crown. Head ( Fig. 2B ), in ventral view, with face wider than long; frontogenal suture distant from eye margins by half width of clypeus and surpassing antennal ledge, extending to anterior margin of crown; antennal ledge carinate, oriented obliquely downwards in relation to frons and extending over frons by short distance; frons approximately as long as wide, narrowing to clypeus, surface with texture shagreen, not excavated below anterior margin of crown; epistomal suture indistinct medially; clypeus not inflated, approximately 1.2x longer than wide, lateral margins straight, diverging to apex, apex carinate and slightly emarginated; maxillary plate produced ventrally as far as clypeus apex; gena with ventrolateral margins slightly weakly convex at mid-length. Head ( Figs 2B, 2C ), in lateral view, with crown-face transition rounded, with inconspicuous parallel striae; anterior margin not extending over eyes. Pronotum ( Figs 1A , 2A ), in dorsal view, with transverse striae on disc and posterior third; anterior margin broadly rounded; lateral margins converging anterad, nearly as long as eye length, in lateral view ( Figs 2B, 2C ), slightly declivous. Forewing ( Figs 1 , 2D ) 3.7x longer than wide; venation distinct, without extra cross veins; inner discal cell short, less than half length of the outer discal cell, subapical and apical cells elongated; appendix well developed, as wide as first apical cell width, bordering first and second apical cells. Profemur, elongated, 4x longer than high; AD, AM, and PD rows reduced and poorly defined, except for apical setae AD 1, AM 1 and PD 1 respectively; AV and PV rows formed by 6–7 setae; AV row extending from base to IC row, PV row extending from base to apex. Protibia, in cross-section, more or less cylindrical, with longitudinal carina adjacent to PD row; AV row formed by long setae, gradually increasing in thickness and length towards apex; Dorsal rows with AD 1 and PD 1 setae developed; AD formed by many small undifferentiated setae; PD row with 3 long setae and intercalary small undifferentiated setae; PV row with 7–8 setae gradually increasing in thickness and length towards apex. Hind leg with femoral setal formula 2:2:1; tibial rows PD, AD, and AV with 24–25, 12, and 15–16 macrosetae, respectively; AD row with intercalary two small setae between macrosetae; PV row with setae of apical half formed by sequence of 1 thicker and 3–4 thinner setae, ending with a thick seta; first tarsomere with two rows of 8–9 small, non cucullate setae on plantar surface; apex with 4 patellae flanked by tapered lateral setae; second tarsomere pecten with 2 platellae flanked by 2 tapered lateral setae on inner and 1 on external corner.

Male terminalia. Sternite VIII ( Fig. 2E ) 1.7x wider than long, approximately rectangular; posterior margin with media third slightly produced. Valve ( Fig. 2F ) 2.6x wider than long; integument thickening present only on dorsal margin, posterior margin deeply V-shaded excavated. Pygofer ( Fig. 2G, H ) 1.7x longer than high, with long unciform processes on dorsal margin, extending from base to near apex; ventral margin straight; posterior margin strongly excavated ventrally, forming a dorsal broad and rectangular apical portion; several macrosetae dispersed on posterodorsal quadrant; apex blunt. Subgenital plate ( Fig. 2G ) short, not extending to apex of pygofer; in ventral view ( Fig. 2H ) spoon-shaped, lateral margins rounded; external margin with long hair-like setae on apical half; apex rounded. Connective ( Fig. 2J, F ) Y-shaped, stem narrow with apex strongly expanded; dorsal knew developed. Style ( Fig. 2J ), in dorsal view, with outer lobe weakly produced, rounded; in lateral view ( Fig. 2K ) with blade long, ventral margin weakly excavated; basal portion with a small tooth-like process directed anterad; apical portion foot-shaped; apex blunt, curved dorsally. Aedeagus ( Fig. 2M, N ) with preatrium developed; dorsal apodeme narrow, extending dorsally to half length of shaft; shaft elongate, cylindrical; lateral pair of processes on apical third, surpassing apex of shaft, flattened, with two subapical spurs; apex slightly membranous with pair rounded lobes.

Female. Unknown.

Etymology. The new species name refers to the mottled coloration of pronotum and forewings.

Material examined. Holotype male, “ Peru, Cuzco, Ttio \ 30.viii.2012 (light) \13º31'69"S 70º53'79"W, \ 2000m / R.R. Cavichioli leg.” ( MUSM).

Remarks. The new species can be easily distinguished form other species of the genus by the coloration with yellow spots, and the pygofer strongly excavated ventrally. In the key to males provided by DeLong (1984), the new species will key out as C. pilana , at step 13', but can be separated by the shape of the pygofer, styles and aedeagus.

Figures

FIGURE 1. Culumana maculosa sp. nov. A, habitus, dorsal view. B, habitus, lateral view. Scales in mm.

FIGURES 2. Culumana maculosa sp. nov., holotype male (MUSM). A, head and thorax, dorsal view. B, head, frontal view. C, head and thorax, lateral view. D, forewing. E, sternite VIII, ventral view. F, valve, ventral view. G, pygofer, valve, and subgenital plate, lateral view. H, right half of pygofer, dorsal view. I, subgenital plate, ventral view. J, style and connective, dorsal view. L, connective, posterior view. K, style, lateral view. M, aedeagus, lateral view. N, aedeagus, posterior view. Scales in mm.