Re-description of Okanagana napa Davis, 1919 Head: Postclypeus variably pronounced. Epicranial suture yellow, incised. Vertex black. Some bilaterally marked with orange. Eyes protruding distinctly beyond width of head. Supra-antennal plates with some orange. Width of head less than anterior border of pronotum. Thorax: Pronotum with apical pronotal margin orange, raised. Pronotal collar broad, distinctly raised and sinuate towards midline. Lateral margins strongly constricted apically. Pronotal margins yellow. Anterior angle of pronotum well defined. Lateral angles of pronotal collar rounded. Paramedian and lateral fissure covered bilaterally with dull orange of varying extent. Mesonotum shining black with orange markings as follows: dull stripe at base of lateral margin; two orange markings centered on scutal depression with two more anterior forming a trapezoidal pattern. Extent of these marks highly variable. Cruciform elevation orange, connecting to scutal depression marks. Hind margin on mesonotum orange. Metanotum visible, black bordered with orange. Wings: Hyaline with orange basal membrane on fore and hind-wing. Forewings with 8 apical cells, hindwings with 6. Venation straw-colored, darkening towards apical cells. Legs: Largely orange. Base and apex of tibia and femur variably marked with black. Coxae orange marked with black. Metatibia with multiple spines. Abdomen: Tergum shining black. Timbals with 5 long timbal ribs (Fig. 1D). Tergites bordered orange on posterior margin to varying extent with slight golden pubescence. Abdominal segments t2 to t7 compact. Elongated t8 + pygofer forming tapered tip creating an overall spindle-shaped aspect to the abdomen (Fig. 2A). Sternites yellow, stVII concave at tip. Venter with only few short hairs. Male Terminalia: Uncus with dorsal-ventral surfaces subparallel in the lateral aspect. Ventral surface with a slight apical curve forming a small tooth. Tip of the uncus with a distinct lobe in the dorsal aspect. Valve (stVIII) length twice height measured from base. Dorsal surface with gradual curve. Uncus approximately ½ the length of valve (Fig. 1C). Female Terminalia: stVII with notch forming a trapezoidal shape with distinct angles at the apical margin. Secondary notch shallow and broad. Sides of stVII tapering to thin rounded tips (Fig. 2F). Size: Holotype: Length of body 24 mm; Width of head across eyes 7.5 mm; Expanse of fore wings 58 mm; Length of valve 4.5 mm (Davis 1919). From Wymore (1934): Length of uncus in holotype of O. arboraria n. syn. 2.5 mm; Expanse of forewing in allotype 66 mm. Note: The description provided above pertains to the most common phenotype of Okanagana napa which accounts for the majority of specimens (Fig. 3A). However, the species has a wide degree of intraspecific phenotypic variation. The former “ crocea ” variety of O. arboraria n. syn. described by Wymore (1934) and synonymized by Simons (1953) is entirely red to pale pink (Fig. 3C). Between these two there is a full gradient: the holotype of O. napa is characteristic of an intermediate form: with pigmentation more extensive in those areas than it is normally found (Fig. 3B).

Published as part of Chatfield-Taylor, Will & Montelongo, Denise, 2026, The loneliest number: small sample sizes result in taxonomic changes in Okanagana (Hemiptera: Auchenorrhyncha: Cicadidae: Tibicininae), pp. 177-187 in Zootaxa 5757 (2) on pages 181-183, DOI: 10.11646/zootaxa.5757.2.5, http://zenodo.org/record/19173655