Beebea guglielmi Schaus
Creators: name: Bernard Landry
Publisher: name: Zenodo
Year: 2016
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Lepidoptera
Pyralidae
Beebea
Beebea guglielmi

description: Key to the brown Galápagos species of Spilomelinae with darker brown markings, excluding Beebea guglielmi Schaus
1 Forewing ground colour golden brown, with distinct darker brown markings as complete basal, antemedial, and postmedial fasciae, and orbicular and reniform stigmata at base and end of cell respectively; hindwing linear markings also distinct, without other spots; wingspan usually above 22.5 mm (20-26 mm); male antenna evenly thin (Fig. 48).................................................................................................................. Psara chathamalis (Schaus)
1’ Forewing ground colour greyish brown to dark brown, with darker brown markings often indistinct, without apparent basal line, usually with only reniform stigma apparent; hindwing markings as poorly defined fascia(e), with or without antemedian spot or short dash, or two spots; wingspan below 22.5 mm; male antenna thickened at base in one species.................................................................................................................................................... 2
2 Forewing reniform stigma contrasting, comma shaped; hindwing with shorter scales of fringe dark greyish brown and longer scales white; wingspan 18-22 mm; male antenna thickened at base and hindwing anal sector enlarged (Figs 49, 50)...................................................................................................... Rhectocraspeda periusalis (Walker)
2’ Forewing reniform stigma more or less contrasting, rarely comma shaped in one species; hindwing never with longer scales of fringe white, although sometimes paler than basal scales; wingspan 16-22.5 mm; male antenna not thickened at base and hindwing anal sector not enlarged......................................................................................... 3
3 Wingspan 18-22.5 mm; forewing reniform stigma a small spot or short dash; hindwing with one small contrasting spot or short dash in cell (Figs 20, 21) ...................................................... Herpetogramma phaeopteralis (Guenée)
3’ Wingspan 15-20 mm; forewing reniform stigma large, variable, sometimes with paler centre or with second encircling ring; hindwing either with two clearly contrasting spots or an indistinct line ........................................ 4
4 Dark brown; forewing reniform stigma squarish, with paler centre; hindwing with indistinct fascia(e); termen with contrasting dark spots on veins of both wings; sexes dissimilar with male sporting distinctly elongate abdomen and forewing fovea (Figs 44, 45) .......................................................................................... Penestola bufalis (Guenée)
4’ Drab to dark greyish brown; forewing reniform stigma variable, often with thin dark line encircling other marking, ‘U’ shaped to ‘8’ shaped; hindwing with two distinct spots in cell and postmedian fascia; termen with contrasting dark spots on veins of both wings sometimes slightly darker between veins; sexes not overly dissimilar in abdominal length (Figs 69, 70)............................................................................................................. Udea galapagensis sp. n.
Remarks: I have identified Galápagos specimens by comparing them with two syntypes from Cayenne, French Guiana and ‘Canad?’ without abdomen in the BMNH. The species was described from 15 specimens and I concur with Munroe (1995: 167) to refrain from designating a lectotype as better syntypes may turn up. The species is known as the Tropical sod webworm (Heppner, 2003).
description: Published as part of Bernard Landry, 2016, Taxonomic revision of the Spilomelinae (Lepidoptera, Pyralidae s. l.) of the Galápagos Islands, Ecuador, pp. 315-399 in Revue suisse de Zoologie 123 (2) on page 341, DOI: 10.5281/zenodo.155309