Polana (Polana) sinopensis, Domahovski, 2025

Polana (Polana) sinopensis sp. nov.

( Figs 1G, H View FIGURE 1 , 7 View FIGURE 7 , 8 View FIGURE 8 )

Diagnosis. Style ( Fig. 7J View FIGURE 7 ), in lateral view, blade narrow, slightly widening subapically; ventral margin smooth. Aedeagus ( Fig. 7K, L View FIGURE 7 ) with pair of basolateral processes widened medially, apex acute extending to apical third of shaft; shaft, approximately cylindrical, curved basally and straight distally, subapical portion expanded laterally; apical portion bifid, with each ramus bifurcate.

Measurements. Holotype male: total length 7.2 mm. Paratypes: males 7.0– 7.4 mm (n = 26); females 7.5–8.3 mm (n = 33).

Coloration. Head and thorax ( Figs 1G, H View FIGURE 1 , 7A–D View FIGURE 7 ) yellowish-brown. Crown ( Fig. 7A View FIGURE 7 ) coronal suture black. Face ( Fig. 7B View FIGURE 7 ) without maculae. Pronotum ( Fig. 7A View FIGURE 7 ) with six black maculae near anterior margin. Proepimeron ( Fig. 7C View FIGURE 7 ) with pronotal carina yellow. Mesonotum ( Fig. 7A View FIGURE 7 ) lateral angles brown; two pairs of faint yellow spots, one on basolateral corner and one near scutoscutellar suture. Forewing ( Figs 1G, H View FIGURE 1 , 7D View FIGURE 7 ) yellowish-brown; veins weakly brown outlined, mostly on apical half; apex of clavus smoky, forming a faint brown stripe extending to subapical cells; black markings on base of clavus, cross veins of discal cells, apex of A1 and Pcu, and cross veins of apical cells.

Description. Similar to the description of Polana inflexa sp. nov. except: Head ( Fig. 7B View FIGURE 7 ), in ventral view, clypeus slightly inflated, 1.3x wider than long at base, lateral margins sigmoid, strongly convergent apically. Forewing ( Fig. 7D View FIGURE 7 ) M vein with segment after the divergence between R+M and before the cross vein m-cu1 more than 3x longer than the length of m-cu1.

Male terminalia. Sternite VIII ( Fig. 7E View FIGURE 7 ) rectangular, 1.5x longer than wide; posterior margin slightly produced medially. Valve ( Fig. 7F View FIGURE 7 ) 2.5x wider than long; integument thickening present only on anterior margin; posterior margin rounded. Pygofer ( Fig. 7G View FIGURE 7 ) 1.7x longer than high; basodorsal processes with subapical tooth; macrosetae dispersed on posterodorsal quadrant; ventral margin rounded; apex truncated. Subgenital plate ( Fig. 7G View FIGURE 7 ) extending to apical third of pygofer; in ventral view ( Fig. 7H View FIGURE 7 ) ovate, outer margin rounded with hair-like setae on apical two-thirds; apex rounded. Connective ( Fig. 7I View FIGURE 7 ) linear, long, extending almost to style apex; stem with lateral margins weakly sclerotized; dorsal keel small. Style ( Fig. 7I View FIGURE 7 ), in dorsal view, outer lobe rounded; in lateral view ( Fig. 7J View FIGURE 7 ) blade narrow, slightly widening subapically, curved dorsally at half length; ventral margin smooth; apex with small process curved dorsally. Aedeagus ( Fig. 7K, L View FIGURE 7 ) with preatrium reduced; atrial portion elevated; pair of basolateral processes widened medially, apex acute extending to apical third of shaft; shaft, approximately cylindrical, shaft curved basally and straight distally, subapical portion expanded laterally; apical portion bifid, with each ramus bifurcate.

Female terminalia. Sternite VII ( Fig. 8A, B View FIGURE 8 ) 1.5x wider than long; posterolateral corners broadly rounded; posterior margin deeply excavated on median third forming three rounded shallow notches. Pygofer ( Fig. 8A, B View FIGURE 8 ) about 1.7x longer than maximum height; macrosetae dispersed on ventroapical half and apex of dorsal margin; apex rounded. Internal sternite VIII membranous. Ovipositor similar to the description of Polana inflexa sp. nov. except: First valvifer ( Fig. 8C View FIGURE 8 ) 2.5x higher than long, almost elliptic, dorsal margin rounded. First valvula ( Fig. 8C, D View FIGURE 8 ) 6x higher than long, basal portion produced anterad, slightly tapered and rounded; lateral carina with inconspicuous rounded teeth. Second valvula ( Fig. 8E, F View FIGURE 8 ), 4.6x higher than long; dorsal margin with few very small subapical teeth. Gonoplac ( Fig. 8G, H View FIGURE 8 ), about 3.2x longer than high.

Etymology. The epithet refers to the City of Sinop where the specimens were collected.

Material examined. Holotype male, BRAZIL, MATO GROSSO: “ SINOP - M. Grosso \ Brasil X-1975 \ M. Alvarenga Leg. ” ( DZUP) . Paratypes: 26♂, 33♀, same holotype data (5♂, 5♀, DZRJ; 21♂, 28♀, DZUP) . Additional material: 33♂, 46♀, same holotype data “1975 or 1976” ( DZUP) .

Remarks. The style of the new species is similar to that of P. inflexa sp. nov. and other species on the genus but this species can be easily separated due to the aedeagus ( Fig. 7K, L View FIGURE 7 ) with a pair of short and wide basolateral processes, and the shaft with the subapical portion expanded laterally and the apex bifid, with each ramus also bifurcate.