Syllepte fraternalis Becker, 2023

Becker, Vitor Osmar, 2023, The identity of Syllepte incomptalis Hübner (Lepidoptera: Crambidae: Spilomelinae) with synonymies, new combinations and new species, Revista Brasileira de Entomologia (e 20220093) 67 (1), pp. 1-12 : 9

Syllepte fraternalis Becker , sp. n.

urn:lsid:zoobank.org:act:4763E9DE-2D77-4EBB-8446-BC6957D22E06

Figs. 1e , 3 c-d

Material examined: Holotype ♂, MEXICO: Sonora, Yecora , 1650 m, 11-15.ix.1998, g. s. (Becker 115929); paratype: 1 ♂, same data as holotype, 5711 ( VOB).

Diagnosis: Medium size; pattern strongly dusted fuscous; male genitalia with uncus long, with round apex.

Description: Male ( Fig. 1e ) 17 mm (37 mm wingspan). Labial palpus whitish ventrally, fuscous dorsally; frons pale-yellow, vertex fuscous. Thorax, dorsally, pale-yellow, patagia fuscous internally, tegula fuscous; whitish ventrally; fore and mid tibia fuscous on articulations. FW, dorsally, pale-yellow, strongly dusted fuscous, transversal bands, lines and veins, dark fuscous; pale-yellow blotch at end of cell, basad of well marked reniform spot; broad area before termen fuscous, termen and cilia dark fuscous; ventrally pale-yellow, basal and postmedial bands faded; reniform spot fuscous. HW fuscous; reniform spot inside pale-yellow blotch, pale-yellow area distad of postmedial band. Abdomen, dorsally, pale-yellow, slightly banded fuscous on articulations, whitish ventrally. Female unknown.

Male genitalia ( Figs.3c ): Uncus long, slightly narrow along middle, apex round. Valva broad, long, tappered at distal third, towards round apex, costa straight, ventral margin slightly bent at distal third, sacculus not defined. Vinculum elongated basad, round; fibula short, thin, sharp tipped, bent ventrad. Phallus ( Fig.3d ) long, thin, slightly sinuate, vesica with long, sclerotized, plate.

Distribution: Mexico, known from the type locality only.

Etymology: From the Latin frater =brother; adjective neuter.

Remarks: Very similar to S. incomptalis both in size and pattern, except for ground color: pale yellow in S.incomptalis , dusted fuscous in S. fraternalis . Male genitalia also distinct, especially in the shape of uncus: tappering gradually distad in S. incomptalis ( Fig. 3a ); narrow, slightly constricted along middle in S. fraternalis ( Fig. 3c ).

Figures

Figure 1 Syllepte adults, dorsal view.a-d.S.incomptalis: a-b.Hübner Figs 285,286; c.[=Pantographa idmonalis Druce, holotype female, Mexico]; d. Male,Mexico.e.S.fraternalis, holotype male, Mexico.f.S.acoetesalis, male, Costa Rica.g.S. expansalis, male, Guatemala. h-i.S. limata: h.Male, Costa Rica. i. Female, USA.j. S. confusalis, male holotype, Brazil. k-l.S.scripturalis,female holotype;k.female, Brazil.m.S.suffusalis, female,Mexico.n.S. gorgonalis, male, Mexico.o-p.S. mnemusalis, males, Brazil.q-r.philetalis: q. Male, Costa Rica; r. Female, Ecuador.

Figure 3 Syllepte male genitalia,ventral view:left, genitalia;right,phallus.a-b.S.incomptalis, Mexico.c-d.S.fraternalis, paratype, Mexico.e-f.S. acoetesalis, Costa Rica.g-h.S.expansalis,Costa Rica.i-j.S.limata, Mexico.k-l.S.confusalis, paratype,Brazil.m-n.S.suffusalis, Costa Rica.o-p.S.gorgonalis, Mexico.q-r.S.mnemusalis, Brazil.s-t.S.philetalis, Mexico.