Tetracis jubararia subsp. jubararia Hulst
Creators: name: Ferris, Clifford D.
name: Schmidt, Christian
Publisher: name: Zenodo
Year: 2010
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Lepidoptera
Geometridae
Tetracis
Tetracis jubararia
Tetracis jubararia jubararia hulst

description: Tetracis jubararia jubararia Hulst
(Figs. 3, 39–45, 94, 109, 125, 141)
Tetracis jubararia Hulst, 1886. New species of Geometridae, No. 2. Entomologica Americana 2(6):120. Holotype ♀, (Fig. 3) Seattle, Wash[ington] [CM]. HT figured by Holland (1904, Plate XLV, fig. 20). Synaxis jubararia McDunnough, 1938, page 173, entry 5189.
Diagnosis: Separation of T. jubararia jubararia from T. mosesiani in coastal California counties is difficult and positive identification is by genitalia (see “Diagnosis” for T. mosesiani). Over the remainder of its range (inland and northern California north to British Columbia), the absence of pale shading distad of the PM line separates jubararia from similarly colored examples of pallulata. T. jubararia jubararia does not exhibit the buff (pale yellow-ochre) color found in its subspecies sericeata.
Description: Adults (Figs. 3, 39–45): FWL: 17–26 mm. Antenna pale ochreous to whitish dorsally, nearly filiform, ventrally densely setose with gaps between segments (laminate), narrower in females. Palpi moderately broad, porrect or slightly upcurved, about 2x eye width, dark ochreous with dark brown tips. Head, thorax, abdomen, legs ochreous, varying in hue across individuals. Legs and ventral abdomen flecked with scattered brown scales. Wings: Base color generally tan and dark brown-tan (males) and orange-tan (females). FW apex falcate. AM and PM lines brown; PM line narrow, sinuate, sometimes with very narrow pale outer edge, bending basad at vein M3; MB colored as rest of wing, often with a diffuse darker central patch; submarginal area dark diffuse banding frequently present. Additional patchy markings may be present producing a “dead-leaf” aspect. DHW with poorly-developed median line that fades out toward upper margin. Dark discal spots on FW and HW. Ventrally paler with dorsal markings repeated; wing surfaces with widelyscattered dark scales suggesting a “dead-leaf” pattern. Male genitalia (Figs. 94, 109): Uncus of medium width, slightly decurved, tapering to bluntly pointed tip. Dorso-caudal margin of gnathos concave with a robust narrow tapering upcurved spine at either side. Robust furca from middle of anellus tapers to rounded apex, enlarging only slightly before apex. Valve moderately broad with even margins, tapering to rounded apex with a small triangular apical projection at the dorsal margin. Aedeagus with an incomplete ring of spinules at posterior end at base of vesica; everted vesica with patch of scattered sclerotized nodules on dome. Female genitalia (Fig. 125): A/P = 0.46. Long unsclerotized tubular ductus bursae expanding slightly at junction with corpus bursae, obscuring junction (ca. 2x length of corpus bursae). Corpus bursae ovoid with small oval dentate signum located at middle.
Material examined: 138 specimens with 17 dissections.
Biology: Full description of early stages by McGuffin (1987:81). Adults from mid-August to late November, depending upon locality and elevation. Reported larval hosts include Alnus, Betula, Cornus, Populus, Ribes, among others; Prunus subcordata Benth. in Modoc Co., California (label data from reared museum specimen). Host records for reared specimens in the CNC are: alder, Salix, Picea glauca Voss, Picea engelmanni Parry, Pseudotsuga menziesii, Thuja sp. (numerous records from British Columbia and Alberta).
Distribution (Fig. 141): Southern California northward to British Columbia and eastward to central Saskatchewan, southwestern Idaho, and White Pine Co., Nevada at elevations from 490–7400’ (150–2255m). Records by province/state/county are: CANADA: BRITISH COLUMBIA. Nanaimo. UNITED STATES: CALIFORNIA. Alameda, Contra Costa, Del Norte, Humboldt, Lake, Marin, Mendocino, Modoc, Monterey, Napa, Orange, Placer, Plumas, San Mateo, Santa Clara, Shasta, Siskiyou, Solano, Sonoma, Stanislaus, Tulare, IDAHO. Boise, Elmore. OREGON. Baker, Coos, Lake. WASHINGTON. King, Kittitas.
description: Published as part of Ferris, Clifford D. & Schmidt, Christian, 2010, Revision of the North American Genera Tetracis Guenée and Synonymization of Synaxis Hulst with Descriptions of Three New Species (Lepidoptera: Geometridae: Ennominae), pp. 1-36 in Zootaxa 2347 on pages 18-19, DOI: 10.5281/zenodo.275566