Orchestina utahana Chamberlin and Ivie, O 1935
Creators: name: Izquierdo, Matías Andrés
name: Ramírez, Martín J.
Publisher: name: Zenodo
Year: 2017
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Arachnida
Araneae
Oonopidae
Orchestina
Orchestina utahana

description: Orchestina utahana Chamberlin and Ivie, 1935   Figures 3, 15A–C, 18A, 19A, 20A, B, 21A, E,  maps 1, 2  
 Orchestina utahana Chamberlin and Ivie, 1935 (male holotype and female allotype from the United States: Utah, west shore of Utah Lake, sifting cottonwood leaves, deposited in AMNH, PBI_OON 51099, 3 male and 4 female paratypes from Utah   Lake, west shore at heron rookery, 1437  
m, 40.16667°, -111.95000°, Apr. 08, 1934, Wilton Ivie, deposited in AMNH, PBI_ OON 42586; examined).  
 NOTE: The original label is missing, but there is an additional one with the inscription “ Orchestina utahana types.” The type locality was revised from the original publication and transcribed onto a new label. A clear label was added to indicate the type status of both specimens.   
 DIAGNOSIS: Males resemble those of O. obscura by the general appearance and a similar palp, and by having cuticular projections on the cheliceral promargins, but can be distinguished by the paler coloration and the slightly larger PME (compare figs. 3E and 5A). Females resemble those of O. moaba by having external pockets on the epigastric region (figs. 18A, 19A, 21A, E), but can be distinguished by their smaller size and proximity to the pedicel.   
MALE (PBI_OON 51099): Total length 1.24.  
 CEPHALOTHORAX: Carapace (fig. 3E) sometimes with weak pattern of dark pigment on sides. Clypeus slightly sloping forward in lateral view. Posterior eye row straight from front. Sternum with dark stripe on anterior median half (fig. 3G, arrow). Cheliceral promargins with conical projections (as in O. obscura, fig. 5B). Endites without serrula. ABDOMEN: Dorsum with gray netlike pattern (fig. 3A, H), epigastric area pale. LEGS: Yellow. GENITALIA (figs. 15A– C, 20A, B): Embolus short, dark, straight in dorsal view, convex in lateral view (figs. 20A, B); sperm duct with only one loop (fig. 20A).   
FEMALE (PBI_OON 51099). Total length 1.19.  
CEPHALOTHORAX: Clypeus sloping forward in lateral view. Endites with serrula in single row.  
ABDOMEN: Cylindrical; dorsum with white coloration, without pattern in female allotype, other material with brown net-shaped pattern (fig. 3C, D, I). LEGS: Left legs I, II absent. GENI- TALIA (figs. 18A, 19A, 21A, E): Epigastric region with two external pockets near pedicel, internal pockets absent; anterior receptaculum tube shaped, twisted ventrally (fig. 21E), posterior receptaculum present, posterior apodeme divided, formed by two parallel plates.  
DISTRIBUTION: West and central United States, Mexico (maps 1 and 2).  
 OTHER MATERIAL EXAMINED: UNITED STATES: Oregon: Benton Co.: 10 mi N Corvallis (44.708258°, -123.260383°), Feb. 20, 1949, Frank Beer, 13 (MCZ 68000, PBI_OON 26476). Douglas Co.: Beside Cleaveland Hill Cemetery (43.804133°, -120.554200°), 500 m, Feb. 07, 1972, E. Benedict, 13 (ANMH, PBI_OON 1659). California: Los Angeles Co.: Santa Monica Mountains (34.08333°, -118.75000°), Feb. 22, 1952, W. McDonald, 1♀ (AMNH, PBI_OON 1107). Siskiyou Co.: 9 mi of SW Tulelake (41.86666°, -121.56666°), Sep. 15, 1965, J.W. Ivie, 33, 3♀ (AMNH, PBI_OON 1081); Willow Creek (41.00000°, -123.00000°), July 14, 1937, R. Chamberlin, 13 (AMNH, PBI_OON 1126). Sonoma Co.: 2 mi W Petrified Forest, Oct. 25, 1959, J. Buckett, 1♀ (AMNH, PBI_OON 1124). Tulare Co.: 6 mi W Johnsondale (35.931475°, -118.648028°), Sep. 15, 1959, W. Gertsch, V. Roth, 1♀ (AMNH, PBI_OON 1111). San Bernardino Co.: Arrowhead Lake (34.248339°, -117.189208°), May 06, 1936, 13, 1♀ (ANMH, PBI_OON 1130); Riverside Co.: Riverside (33.953361°, -117.3960078°), Oct. 10, 1956, A. Nadler, 1♀ (ANMH, PBI_OON 1134); San Gabriel Mts. Big Rock Camp (34.283333°, -117.650000°), Apr. 09, 1955, R. Schick, 13 (ANMH, PBI_OON 1120); Weott (Redwood Grove) (40.321944°, -123.921667°), Sep. 21, 1964, J., W. Ivie, 23 (ANMH, PBI_OON 1317). Nevada: Washoe Co.: 20 mi E Reno, 39.52250°, -119.43806°, Aug. 06, 1935, W. Ivie and R.V. Chamberlin, 2♀, 9 juveniles, sex unknown (MCZ, PBI_ OON 42816). Wyoming: Albany Co.: 17 mi SW Laramie, 2400 m (41.13697°, -105.82246°), July 05, 1960, to July 12, 1960, B. Patterson, 1♀ (MCZ 66799, PBI_OON 26474). Utah: Utah Co.: West side of Utah Lake (40.23778°, -111.88306°), Sep. 24, 1939, B. Mulaik, specimen in bad condition, sex unknown (MCZ, PBI_OON 42823); West side of Utah Lake (40.23778°, -111.88306°), May 13, 1934, A., W. Ivie, 4♀ (ANMH, PBI_OON 1459); same, Apr. 08, 1934, A., W. Ivie, 43, 2♀ 2 juveniles, sex unknown (MACN- Ar 31475, PBI_OON 1460). Bluff Co.: (37.28444°, -109.55250°), May 11, 1933, W. Ivie, 13, 1♀ (MCZ, PBI_OON 42819); Spanish Fork Canyon (40.068644°, -111.574472°), Nov. 02, 1951, R. Chamberlin, W. Ivie, 13 (ANMH, PBI_OON 1458). Wasatch Co.: Wasatch (40.00000°, -111.00000°), 13, 1♀ (ANMH, PBI_OON 1076). New Mexico: Los Alamos Co.: Los Alamos, Mortandad Canyon (34.518883°, -105.869219°), 5 m, June 25, 1976, to June 28, 1976, D. Lowrie, 1♀ (FMNH 33508, PBI_OON 10015) misidentified as Orchestina saltitans. Santa Fe Co.: 2136 m (35.68639°, -105.93806°), Chamberlin and Ivie, 3♀, 1 juvenile, sex unknown (ANMH, PBI_OON 42831); 12 mi N Albuquerque (35.280406°, -106.588728°), Oct. 04, 1965, 63, 1 juvenile, sex unknown (ANMH, PBI_OON 1454). MEXICO: Baja California: Tecate: 40 mi S Tecate in oak grove (31.981506°, -116.623897°), Nov. 10, 1957, V. Roth, 1♀ (AMNH, PBI_OON 1325).
description: Published as part of Izquierdo, Matías Andrés & Ramírez, Martín J., 2017, Taxonomic Revision Of The Jumping Goblin Spiders Of The Genus Orchestina Simon, 1882, In The Americas (Araneae: Oonopidae), pp. 1 in Bulletin of the American Museum of Natural History 2017 (410) on page 1, DOI: 10.1206/0003-0090-410.1.1, http://zenodo.org/record/5405613