taxonID	type	description	language	source
2C9864B4AD87549EB8DDA508F324042F.taxon	description	Figs 1, 2, 6, 10	en	Corley, Martin, Rosete, Jorge, Ferreira, Sónia (2025): Monochroa monellii (Lepidoptera, Gelechiidae), a new species from Portugal. Nota Lepidopterologica 48: 289-298, DOI: 10.3897/nl.48.173830
2C9864B4AD87549EB8DDA508F324042F.taxon	description	Description. Wingspan 8 ‒ 10 mm. Head light grey; labial palps with segment 2 slightly thickened with scales, 1.1 times as long as segment 3, dark fuscous on outer side, whitish on inner side, segment 3 slender, whitish with a few darker scales on outer side, sometimes with a blackish partial ring at base; antenna fuscous, dark brown at distal end of each segment. Thorax grey. Forewing fuscous, small blackish spot or short dash in fold at one-quarter and spot at end of cell; fringes dark grey with scattered dark dots, sometimes with a distinct dark grey fringe line; hindwing three-quarters width of forewing, grey, fringes grey. Abdomen light fuscous. Variation. Forewing scales may be uniformly dark brown, or paler towards base to a varying extent, resulting in variation in ground colour. In the darker specimens the blackish spots are obscure. Male genitalia. Tegumen slightly more than half as long as valva, expanding distally, uncus a weak bulge, gnathos absent; valva with costal margin concave in middle, tapering from four-fifths to obtuse or truncate apex with one or two small teeth before apex, ventral margin with long gradual curve to digitate sacculus which extends very shortly beyond harpe which forms a very large oval flap; phallus with basal part longer than parallel-sided distal part, swollen in middle and with a large oval, thin-walled ‘ window’, cornuti very numerous, largest only slightly longer than those in the middle of the group. Female genitalia. Posterior and anterior apophyses about equal in length; ostium opening at distal margin of segment VIII, antrum gradually tapering, ductus bursae twice as long as ovate corpus bursae with ductus seminalis arising at middle and colliculum at one-third ductus length from corpus bursae; signum a broad plate constricted in middle by a pair of chess pawn-shaped structures on the longitudinal axis.	en	Corley, Martin, Rosete, Jorge, Ferreira, Sónia (2025): Monochroa monellii (Lepidoptera, Gelechiidae), a new species from Portugal. Nota Lepidopterologica 48: 289-298, DOI: 10.3897/nl.48.173830
2C9864B4AD87549EB8DDA508F324042F.taxon	diagnosis	Diagnosis. Externally M. monellii sp. nov. is extremely similar to M. conspersella (Figs 3, 7), M. servella (Figs 4, 8) and M. tetragonella (Figs 5, 9). The last species, according to Gregersen and Karsholt (2022) has much of the forewing with whitish scales thus looking paler. The specimens they illustrate are from localities around the Baltic Sea, but those from England (Fig. 5) are uniformly dark brown. All four species vary in the extent of pale coloration at the base of the scales which affects the overall coloration of the forewing. Reliable identification by morphology therefore depends on genitalia characters. In the male genitalia, M. monellii has the costal margin of the valva slightly concave in the middle, whereas the margin is straight or slightly convex in the other species. The phallus has a cluster of numerous cornuti, with little difference in size in M. monellii while in M. servella and M. conspersella the size of the cornuti increases considerably from one end of the cluster to the other, the longest cornuti being about 3 times as long as those in the middle of the cluster; in M. tetragonella the increase in size is less marked. Other differences are in the shape of the costal margin and apex of the valva and the length and shape of the sacculus. These features can be seen in Figs 6 – 9. In the female genitalia there are differences between species in the shape of the signum, also clearly visible in Figs 10 – 13.	en	Corley, Martin, Rosete, Jorge, Ferreira, Sónia (2025): Monochroa monellii (Lepidoptera, Gelechiidae), a new species from Portugal. Nota Lepidopterologica 48: 289-298, DOI: 10.3897/nl.48.173830
2C9864B4AD87549EB8DDA508F324042F.taxon	etymology	Etymology. Monochroa monellii sp. nov. is named after its host-plant Lysimachia monelli (L.) U. Manns & Anderb. It is appropriate to mention here that the genus Lysimachia has recently been expanded to include species that were placed in Anagallis L. and Glaux L. (Manns and Anderberg 2009).	en	Corley, Martin, Rosete, Jorge, Ferreira, Sónia (2025): Monochroa monellii (Lepidoptera, Gelechiidae), a new species from Portugal. Nota Lepidopterologica 48: 289-298, DOI: 10.3897/nl.48.173830
