Lasionycta illima Crabo & Lafontaine 2009, sp. n.

• Main Authors: Crabo, Lars, Lafontaine, Donald
• Format: Other/Unknown Material
• Language: unknown
• Published: 2009
• Subjects: Biodiversity; Taxonomy; Animalia; Arthropoda; Insecta; Lepidoptera; Noctuidae; Lasionycta; Lasionycta illima; Yukon; Canada; British Columbia; Swim Lakes; Alaska
• Online Access: https://zenodo.org/record/3790234; https://doi.org/10.5281/zenodo.3790234

Lasionycta illima Crabo & Lafontaine, sp. n. urn:lsid:zoobank.org:act: D30C403E-E74E-4A7D-A712-9F032AACB4EA Figs 38, 39, 153, 209. Map 8 Type material. Holotype ♁. USA, Alaska, Mile 315 Richardson Hwy, 8 June 1951, Mason and McGillis. CNC. Paratypes 2 ♀. Canada. Yukon. Swim Lakes, 133° W 62° 13' N, 3200’, 20 June 1960, E. W. Rockburne (1 ♀); Ross R, 132° 30' W 61° 56' N, 3000’, 21 June 1960, J.E.H. Martin (1 ♀). CNC, LGC. Etymology. The name illima is derived from the Latin illimis meaning clear or free of mud. It refers to the bright appearance of the hindwing of this species. Diagnosis. Lasionycta illima resembles L. poca in size and markings, but has a luteous hindwing, nearly lacking basal suffusion, and a blue tint to the forewing. The genitalia of both sexes and male antenna are indistinguishable, but L. illima has ellipsoid eyes. It is the only species in the sub-group with a bipectinate antenna and reduced eye size (anterior width of both eyes excluding frons divided by distance between outer eyes = 0.41–0.48 in L. illima; 0.54–0.55 in L. poca). Lasionycta illima has the most northern distribution of the species with wide antenna, occurring from northern British Columbia to Alaska. Lasionycta illima is superficially similar to L. frigida from western Alberta, but can be told from it by eye size. Lasionycta illima occurs with L. leucocycla albertensis, which also has a yellow hindwing. They are distinguished by the male antenna and hindwing postmedial line as described in the L. leucocycla diagnosis. Th e CO1 sequence of L. illima is unknown. Description. Head – Antenna of male bipectinate; individual segments 2.5× as wide as central shaft. Antenna of female filiform and ciliate. Dorsal antennal segments dark gray proximally, white distally. Scape white. Eye size moderately reduced, ellipsoid. Palpus pale luteous white with scattered dark-gray scales. Frons covered in nearly equal numbers of dark-gray and white hair-like scales. Top of head slightly darker than frons. Thorax – Vestiture a mixture of ...