Lasionycta Crabo &amp; Lafontaine, 2009, gen. n.
Creators: name: Crabo, Lars
name: Lafontaine, Donald
Publisher: name: Zenodo
Year: 2009
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Lepidoptera
Noctuidae
Lasionycta

description: Key to North American <i>Lasionycta</i> species-groups and <i>Psammopolia</i> gen. n. <b>Males</b> 1. Digitus vestigial...................................................................... <i>Psammopolia</i> – Digitus elongate (<i>Lasionycta</i>).................................................................... <b>2</b> 2. Valve lacking membranous postsaccular flap........ <b> <i>L</i>. <i>secedens</i> species-group</b> – Valve with postsaccular flap........................................................................ <b>3</b> 3. Uncus nearly cylindrical with acute apex........... <b> <i>L</i>. <i>leucocycla</i> species-group</b> – Distal uncus dorsoventrally flattened with rounded or truncated apex........ <b>4</b> 4. Vesica very long (&gt; 3× aedeagus length), straight or slightly curved beyond basal bend, distal part with apical field of velvety setae............................... <b>5</b> – Vesica shorter (&lt;3× aedeagus), coiled or spiraled with stout apical setae.... <b>6</b> 5. Uncus tip slightly expanded and rounded....... <b> <i>L</i>. <i>skraelingia</i> species-group</b> – Uncus tip spatulate with squared-off apex............... <b> <i>L</i>. <i>phaea</i> species-group</b> 6. Digitus more heavily sclerotized than clasper, bent 90° ventrad at base with prong-like or flange-like subbasal projection......... <b> <i>L</i>. <i>subdita</i> species-group</b> – Digitus less heavily sclerotized than clasper, oriented 30–45° ventrad, cylindrical, without projections........................................................................ <b>7</b> 7. Valve with weakly constricted neck and small rounded cucullus; forewing with inconspicuous dark-filled reniform spot......... <b> <i>L</i>. <i>luteola</i> species-group</b> – Valve with strongly constricted neck and large triangular cucullus; forewing with large pale-filled reniform spot...................... <b> <i>L</i>. <i>mutilata</i> species-group</b> <b>Females</b> 1. Appendix bursae narrow and strongly spiraled........................................... <b>2</b> – Appendix bursae bulbous, at most with indentation producing spiraled surface groove................................................................................................. <b>3</b> 2. Ovipositor dorsoventrally asymmetrical with pointed elongate posterodorsal extension; wings pale sandy brown or silver gray..................... <i>Psammopolia</i> – Ovipositor lobes pad-like and symmetrical; forewings dark gray; hindwings yellow and black.................................................. <b> <i>L</i>. <i>secedens</i> species-group</b> 3. Ovipositor lobe sclerotized and conical, spade shaped, or rounded, covered with short stout setae at apex............................ <b> <i>L</i>. <i>leucocycla</i> species-group</b> – Ovipositor lobe soft and pad-like, covered with hair-like setae................... <b>4</b> 4. Bursa copulatrix round with appendix bursae extending anteriorly from left side of corpus bursae....................................... <b> <i>L</i>. <i>skraelingia</i> species-group</b> – Bursa copulatrix ovoid; appendix bursae directed posterodorsad or to left from posterodorsal origin on corpus bursae................................................ <b>5</b> 5. Appendix bursae with spiraled surface groove; ductus bursae nearly cylindrical, without proximal or distal expansions............... <b> <i>L</i>. <i>phaea</i> species-group</b> – Appendix bursae bulbous and broadly S-shaped, without surface groove; ductus bursae dorsoventrally flattened........................................................ <b>6</b> 6. Anterior ductus bursae with focal expansion toward right&gt; 1.5× ductus diameter near corpus bursae..................................... <b> <i>L</i>. <i>subdita</i> species-group</b> – Ductus bursae lacking asymmetrical expansion near corpus bursae............ <b>7</b> 7. Ductus bursae 0.9–1.0× as long as corpus bursae; small species (forewing length 12–14 mm) with indistinct dark reniform spot............................................................................................................... <b> <i>L</i>. <i>luteola</i> species-group</b> – Ductus bursae relatively shorter, ̴ 0.7× as long as corpus bursae; larger species (forewing length 16–18 mm) with large pale-fi lled reniform spot outlined in black...................................................... <b> <i>L</i>. <i>mutilata</i> species-group</b>
description: Published as part of <i>Crabo, Lars &amp; Lafontaine, Donald, 2009, A Revision of Lasionycta Aurivillius (Lepidoptera: Noctuidae) for North America and notes on Eurasian species, with descriptions of 17 new species, 6 new subspecies, a new genus, and two new species of Tricholita Grote, pp. 1-156 in ZooKeys 30 (30)</i> on pages 10-11, DOI: 10.3897/zookeys.30.308, http://zenodo.org/record/576576