Okanagana napa Davis, 1919

Okanagana napa – Davis, 1919: 194.

Okanagana arboraria – Wymore, 1934: 166. n. syn.

Type Locality: Holotype: Napa County, California. Deposited at the USNM.

Type Locality of Okanagana arboraria: Holotype: Courtland, Sacramento County, California, USA. 5September 1928. Deposited at CASC. (Sanborn & Heath 2017).

Abbreviated Description of Holotype (Fig. 1): Head: Postclypeus not pronounced with anterior border broadly orange, not distinctly sulcate. Epicranial suture yellow, incised. Vertex bilaterally marked with orange. Eyes protruding distinctly beyond width of head. Supra-antennal plates 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 and lateral angles of pronotal collar rounded. Paramedian and lateral fissure broadly covered bilaterally with dull orange. Mesonotum shining black with orange markings as follows: broad, dull stripe at base of lateral margin; line along parapsidal suture terminates in broad, crescent-shaped marking; posterior-anterior line connects crescent-shaped marking to broadly triangular spots anterior to cruciform elevation; the connecting line radiates fine orange streaks; cruciform elevation and lateral depressions orange. Orange metanotum visible.

Wings: Hyaline with pale orange basal membrane. Forewings with 8 apical cells, hindwings with 6. Venation straw-colored. Basal cell of forewings clear. Fore and hind wing membrane orange.

Legs: Largely orange. Base and apex of tibia and femur 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 narrowly bordered orange on posterior margin. Anterior and posterior lateral margin of t3 bordered orange forming broader stripe with t2. Abdominal segments t2 to t7 compact. Elongated t8 + pygofer forming tapered tip creating an overall spindle-shaped aspect to the abdomen (Fig. 1A). Sternites yellow, stVII concave at tip. Venter and tergites 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).

Size: 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).