Polana (Polana) languida, Domahovski, 2025

Polana (Polana) languida sp. nov.

( Figs 1E, F View FIGURE 1 , 5 View FIGURE 5 , 6 View FIGURE 6 )

Diagnosis. Style ( Fig. 5J View FIGURE 5 ), in lateral view, blade nearly straight; ventral margin serrated; apex truncated. Aedeagus ( Fig. 5K, L View FIGURE 5 ) with pair of basolateral processes short, weakly sclerotized, extending to half length of shaft; shaft curved basally and straight distally, cylindrical; apex with pair of ventral processes, straight and directed ventrally.

Measurements. Holotype male: total length 6.0 mm. Paratypes: males 5.8–6.1 mm (n = 17); females 6.5–6.9 mm (n = 18).

Coloration. Head and thorax ( Figs 1E, F View FIGURE 1 , 5A–D View FIGURE 5 ) yellowish-brown. Crown ( Fig. 5A View FIGURE 5 ) coronal suture black. Face ( Fig. 5B View FIGURE 5 ) with yellow irregular maculae on lorum and between eye and frons. Pronotum ( Fig. 5A View FIGURE 5 ) with six to eight black maculae near anterior margin and some irregular yellowish portions. Proepimeron ( Fig. 5C View FIGURE 5 ) with a black strip below the pronotal carina yellow. Mesonotum ( Fig. 5A View FIGURE 5 ) with two pairs of yellow spots, one on basolateral corner and one near scutoscutellar suture. Forewing ( Figs 1E, F View FIGURE 1 , 5D View FIGURE 5 ) yellowish-brown; veins weakly brown outlined, mostly on apical half; costal margin with yellow macula on basal third; apex of clavus smoky; black markings on base of clavus, cross veins of discal cells, apex of A1 and Pcu veins, and cross veins of apical cells.

Description. Similar to the description of Polana inflexa sp. nov. except: Head ( Fig. 5B View FIGURE 5 ), in ventral view, clypeus slightly inflated, 1.3x wider than long at base, lateral margins sigmoid, strongly convergent apically. Forewing ( Fig. 5D View FIGURE 5 ) 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. 5E View FIGURE 5 ) rectangular, 1.6x longer than wide; posterior margin straight. Valve ( Fig. 5F View FIGURE 5 ) 2x wider than long; integument thickening present only on anterior margin; posterior margin rounded. Pygofer ( Fig. 5G View FIGURE 5 ) 1.3x longer than high; basodorsal processes with subapical tooth; macrosetae dispersed on dorsoapical quadrant; ventral margin straight; apex wide, broadly rounded. Subgenital plate ( Fig. 5G View FIGURE 5 ) extending almost to apical portion of pygofer; in ventral view ( Fig. 5H View FIGURE 5 ) ovate, outer margin rounded with short setae on apical half and some hair-like setae on basal half; apex slightly tapered and rounded. Connective ( Fig. 5I View FIGURE 5 ) T-shaped, extending to half length of style blade; stem wider apically; dorsal keel developed. Style ( Fig. 5I View FIGURE 5 ), in dorsal view, outer lobe reduced; in lateral view ( Fig. 5J View FIGURE 5 ) blade nearly straight; ventral margin serrated; apex truncated with small process directed dorsally. Aedeagus ( Fig. 5K, L View FIGURE 5 ) with preatrium short; dorsal apodeme rounded; pair of basolateral processes short, weakly sclerotized, extending to half length of shaft, tapering to acute apex; shaft curved basally and straight distally, cylindrical; apex with pair of ventral processes, straight and directed ventrally.

Female terminalia. Sternite VII ( Fig. 6A, B View FIGURE 6 ) 1.8x wider than long; posterolateral corners rounded; posterior margin excavated laterad of rounded median lobe. Pygofer ( Fig. 6A, B View FIGURE 6 ) about 1.7x longer than maximum height; macrosetae dispersed on dorsoapical fourth and ventroapical half; apex rounded. Internal sternite VIII membranous. Ovipositor similar to the description of Polana inflexa sp. nov. except: First valvifer ( Fig. 6C View FIGURE 6 ) 1.3x higher than long, almost square-shaped; outer surface with many dentiform cuticular projections. First valvula ( Fig. 6C, D View FIGURE 6 ) 6.5x higher than long; basal portion weakly produced anterad and rounded. Second valvula ( Fig. 6E, F View FIGURE 6 ) 4.5x higher than long; dorsal margin with few very small teeth subapically. Gonoplac ( Fig. 6G, H View FIGURE 6 ), about 2.9x longer than high; dorsoapical margin strongly declivous.

Etymology. The epithet comes from the Latin word “ languidus ” meaning faint, weak. It refers to the weakly sclerotized basolateral processes of aedeagus.

Material examined. Holotype male, BRAZIL, MATO GROSSO: “ Brasil, MT, Novo Mundo,\ Pq. Est. do Cristalino ,\ 09.4517ºS 55.8396ºW,\ 240m, sweep, 21–25.vi.\ 2017, A.C. Domahovski ” ( DZUP) GoogleMaps . Paratypes: 13♂, 14♀, same holotype data (3♂, 4♀, DZRJ; 10♂, 10♀, DZUP) ; 1♂, “ Brasil, MT , Nova Ubiratã,\ E.S.E.C. Rio Ronuro ,\ 13.1122ºS, 54.4436ºW, 330m \ light trap, 11-16.vi.2017, RR\ Cavichioli & AC GoogleMaps Domahovski ” ( DZUP); 1♂, 2♀, “ Brasil, MT , Cotriguaçu, Faz. \ São Nicolau, 09.8559°S, 58.2486°W, 230m, light trap,\ 26–29.vi.2017, RR Cavichioli \ & AC Domahovski ” ( DZUP) GoogleMaps ; RONDÔNIA: 1♂, 2♀, 16-XI-1991, Faz. \ Rancho Grande, Cacau- \ lândia, Arquimedes, RO \ Mielke leg.” ( DZUP) ; 1♂, “Ouro Preto \ d’Oeste, RO \ 3.II.1987 \ C. Elias”, “Projeto Po \ lonoroeste” ( DZUP) .

Remarks. The shape of the style and aedeagus are most similar to those of P. squarela and P. scruta , but the new species can be easily separated due to the aedeagus with basolateral pair of processes shorter, extending only the shaft midlength, whereas in P. squarela and P. scruta these processes are long, extending to the shaft apex, and curved ventrally.