Coloradactria B. Landry & T. Leger 2025
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| author | Warren, Andrew D. Ferris, Clifford D. Landry, Bernard Gauthier, Jeremy Léger, Théo Bilat, Julia Nunes, Christian A. |
| author_facet | Warren, Andrew D. Ferris, Clifford D. Landry, Bernard Gauthier, Jeremy Léger, Théo Bilat, Julia Nunes, Christian A. |
| contents | <p><i>Coloradactria</i> B. Landry & T. Léger, <b>new genus</b></p><p><b>Type species.</b> <i>Coloradactria frigida</i> A. Warren, Ferris & B. Landry, described below.</p><p><b>Diagnosis.</b> <i>Coloradactria frigida</i> is close to <i>Neodactria</i> Landry as shown by morphological characters, notably the general configuration of the male and female genitalia (Fig. 3). The narrower forewing of the male and the overall pattern (Fig. 2a,b) differ from <i>Neodactria</i>, which often have distinct postmedian and subterminal transverse lines, but no spot submedially. In venation, <i>Coloradactria frigida</i> differs from <i>Neodactria</i> and most other New World Crambini genera (see Landry, 1995) in the long stem of M2+M3 or the fusion of these two veins in the forewing as well as the missing vein in the Median or Cubitus sector of the hindwing. The reduced tympanal organs of <i>C. frigida</i> (Figs. 3e,f) also contrast with the fully complete tympanal organs of <i>Neodactria</i> (see Landry 1995: fig. 230). In the female, the more or less complete brachyptery offers a striking contrast with the fullywinged female moths of <i>Neodactria</i>. In addition, our phylogenetic analysis of the six genes (Fig. 1) recovers <i>Coloradactria</i> as the sister group of <i>Neodactria</i>.</p><p><b>Description.</b> <i>Males.</i> Head with frons rounded. Antenna laminate. Labial palpi long (approximately 2.7X eye diameter), porrect (on images of live moths), slender tapering to tips, without scale tufts. Maxillary palpi short, bushy. Haustellum fully developed. Chaetosemata present. Ocelli present. Interocular index 0.87. Foreleg with epiphysis. Midleg with apical spurs of equal lengths. Hindleg with dual median spurs on tibia and at tibialtarsal joint equal in length. FW shape variable in width and inclination of outer margin, more strongly inclined in specimens with narrower forewings; retinaculum absent.</p><p>Wing venation (Fig. 4): FW Sc free, reaching slightly beyond middle of wing; R1 free or on short stem with R2, not connecting with Sc; R2 from same base as R1, sometimes on short stem with it, or well separated from it; R3 very short or vestigial, from middle of R4; R5 from slightly before middle of R3+4; M1 free, arising below R5; M2+M3 on long stalk varying between half to four-fifths of length, or completely fused; CuA1, CuA2 and Anal vein free. HW Rs connected with Sc+R1 at about two-thirds of its length; M1 with a short cross-vein at about one-fourth the length of M1, running alongside base of Sc+R stem for about one-third of its length; M2, M3, CuA1, and CuA2 with one vein missing.</p><p>Tympanal organs very much reduced (Fig. 3e), with strong venulae secundae, much reduced tympanic pockets, without tympanic ridge, wide tympanic bridge, reduced tympanic drums. Genitalia with poorly developed gnathos and pseudosaccus, valva with a strong costal process and without sacculus, phallus essentially a uniform cylinder, opened dorsally at apex.</p><p><i>Females</i>. As male except antenna filiform (Fig. 7b). Wings reduced, non-functional in terms of flight; one completely apterous, forewing length in remaining specimens varying from shriveled stump to 6 mm. Tympanal organs more strongly reduced than in males, without distinct tympanic pockets or drums (Fig. 3f). Genitalia typical of Crambini; with papillae anales not distinctly divided into lobes; apophyses short; segment VIII dorsally narrow; sterigma robust, heavily sclerotized and strongly protruding; ductus bursae short, unsclerotized; corpus bursae simple, without signum.</p><p><b>Diversity and distribution.</b> This genus includes only the one species described here and no others are known. It is distributed in Colorado, USA, between 1584 and 1914 m elevation.</p><p><b>Remarks.</b> The new genus is placed in the Crambini based on the shape of the gnathos and the female papillae anales disconnected dorsally (see Fig. 3b and Landry, 1995). The open hindwing cell is also present in all Crambini although not exclusive to them. The variation in shape and width of the male forewing is quite unusual in Crambinae, not to mention the variation in the female̓s shortened wings. In the forewing venation, the individual variation in the length of the stem of M2 + M3, sometimes including their complete fusion, is very unusual for Crambinae. In the hindwing venation, the missing vein in the Median or Cubital sector is also found in <i>Almita</i> Landry and <i>Raphiptera</i> Hampson, two genera with diminutive species. Descaling of the wings was extremely difficult because of the fragile nature of the membrane, which tore easily, and tenacious attachment of the scales.</p> |
| format | Recurso digital |
| id | zenodo_https___doi_org_10_5281_zenodo_18484078 |
| institution | Zenodo |
| language | |
| publishDate | 2025 |
| publisher | Zenodo |
| record_format | zenodo |
| spellingShingle | Coloradactria B. Landry & T. Leger 2025 Warren, Andrew D. Ferris, Clifford D. Landry, Bernard Gauthier, Jeremy Léger, Théo Bilat, Julia Nunes, Christian A. Biodiversity Taxonomy Animalia Arthropoda Insecta Lepidoptera Crambidae Coloradactria <p><i>Coloradactria</i> B. Landry & T. Léger, <b>new genus</b></p><p><b>Type species.</b> <i>Coloradactria frigida</i> A. Warren, Ferris & B. Landry, described below.</p><p><b>Diagnosis.</b> <i>Coloradactria frigida</i> is close to <i>Neodactria</i> Landry as shown by morphological characters, notably the general configuration of the male and female genitalia (Fig. 3). The narrower forewing of the male and the overall pattern (Fig. 2a,b) differ from <i>Neodactria</i>, which often have distinct postmedian and subterminal transverse lines, but no spot submedially. In venation, <i>Coloradactria frigida</i> differs from <i>Neodactria</i> and most other New World Crambini genera (see Landry, 1995) in the long stem of M2+M3 or the fusion of these two veins in the forewing as well as the missing vein in the Median or Cubitus sector of the hindwing. The reduced tympanal organs of <i>C. frigida</i> (Figs. 3e,f) also contrast with the fully complete tympanal organs of <i>Neodactria</i> (see Landry 1995: fig. 230). In the female, the more or less complete brachyptery offers a striking contrast with the fullywinged female moths of <i>Neodactria</i>. In addition, our phylogenetic analysis of the six genes (Fig. 1) recovers <i>Coloradactria</i> as the sister group of <i>Neodactria</i>.</p><p><b>Description.</b> <i>Males.</i> Head with frons rounded. Antenna laminate. Labial palpi long (approximately 2.7X eye diameter), porrect (on images of live moths), slender tapering to tips, without scale tufts. Maxillary palpi short, bushy. Haustellum fully developed. Chaetosemata present. Ocelli present. Interocular index 0.87. Foreleg with epiphysis. Midleg with apical spurs of equal lengths. Hindleg with dual median spurs on tibia and at tibialtarsal joint equal in length. FW shape variable in width and inclination of outer margin, more strongly inclined in specimens with narrower forewings; retinaculum absent.</p><p>Wing venation (Fig. 4): FW Sc free, reaching slightly beyond middle of wing; R1 free or on short stem with R2, not connecting with Sc; R2 from same base as R1, sometimes on short stem with it, or well separated from it; R3 very short or vestigial, from middle of R4; R5 from slightly before middle of R3+4; M1 free, arising below R5; M2+M3 on long stalk varying between half to four-fifths of length, or completely fused; CuA1, CuA2 and Anal vein free. HW Rs connected with Sc+R1 at about two-thirds of its length; M1 with a short cross-vein at about one-fourth the length of M1, running alongside base of Sc+R stem for about one-third of its length; M2, M3, CuA1, and CuA2 with one vein missing.</p><p>Tympanal organs very much reduced (Fig. 3e), with strong venulae secundae, much reduced tympanic pockets, without tympanic ridge, wide tympanic bridge, reduced tympanic drums. Genitalia with poorly developed gnathos and pseudosaccus, valva with a strong costal process and without sacculus, phallus essentially a uniform cylinder, opened dorsally at apex.</p><p><i>Females</i>. As male except antenna filiform (Fig. 7b). Wings reduced, non-functional in terms of flight; one completely apterous, forewing length in remaining specimens varying from shriveled stump to 6 mm. Tympanal organs more strongly reduced than in males, without distinct tympanic pockets or drums (Fig. 3f). Genitalia typical of Crambini; with papillae anales not distinctly divided into lobes; apophyses short; segment VIII dorsally narrow; sterigma robust, heavily sclerotized and strongly protruding; ductus bursae short, unsclerotized; corpus bursae simple, without signum.</p><p><b>Diversity and distribution.</b> This genus includes only the one species described here and no others are known. It is distributed in Colorado, USA, between 1584 and 1914 m elevation.</p><p><b>Remarks.</b> The new genus is placed in the Crambini based on the shape of the gnathos and the female papillae anales disconnected dorsally (see Fig. 3b and Landry, 1995). The open hindwing cell is also present in all Crambini although not exclusive to them. The variation in shape and width of the male forewing is quite unusual in Crambinae, not to mention the variation in the female̓s shortened wings. In the forewing venation, the individual variation in the length of the stem of M2 + M3, sometimes including their complete fusion, is very unusual for Crambinae. In the hindwing venation, the missing vein in the Median or Cubital sector is also found in <i>Almita</i> Landry and <i>Raphiptera</i> Hampson, two genera with diminutive species. Descaling of the wings was extremely difficult because of the fragile nature of the membrane, which tore easily, and tenacious attachment of the scales.</p> |
| title | Coloradactria B. Landry & T. Leger 2025 |
| topic | Biodiversity Taxonomy Animalia Arthropoda Insecta Lepidoptera Crambidae Coloradactria |
| url | https://doi.org/10.5281/zenodo.18484078 |