147,201 research outputs found
Leuctra szczytkoi Stark & Stewart 1981
No full textLeuctra szczytkoi Stark & Stewart (Figs. 51-56) Leuctra szczytkoi Stark & Stewart, 1981:91. Holotype ♂ (USNM), Schoolhouse Springs, Jackson Parish, Louisiana Leuctra szczytkoi: DeWalt & Stark, 1996:61. Female and larval descriptions Material examined. Louisiana: Jackson Parish, Schoolhouse Springs, 7.6 km NNW Eros, T17 N, R1 W, Sec 12, 11 October 1997, R. E. DeWalt, B. Stark, 14♂, 21♀ (INHS). Comments. The specimens examined in this study are from the type locality. As indicated above the male paraprocts are very similar to those of L. paleo.Published as part of Harrison, Audrey B. & Stark, Bill P., 2010, Two New Species Of Stoneflies In The Leuctra Ferruginea Group (Plecoptera: Leuctridae), With Notes On The Leuctra Species Known For Mississippi And Alabama, U. S. A., pp. 16-33 in Illiesia 6 (3) on page 31, DOI: 10.5281/zenodo.475957
Perlesta baumanni : Stark 2004
No full textPerlesta baumanni Stark, 1989 Perlesta baumanni Stark, 1989:276. Holotype ♂ (United States National Museum), Mill Creek, near Y‐ City, Scott Co., Arkansas Perlesta baumanni: Poulton & Stewart, 1991:39 Perlesta baumanni: Stark, 2004:90 3 4 Material examined. Arkansas: Scott Co., Tan‐ a‐ hill Creek, Y‐ City, 13 May 2007, B. Stark, 1 ♂. Oklahoma: Latimer Co., Turkey Creek, Hwy 270 east of Red Oak, 12 May 2007, B. Stark, 7 ♂. LeFlore Co., Hodge Creek, Holsom Creek Road, 2 miles west of Hwy 270, 13 May 2007, B. Stark, 10 ♂, 5 ♀. Adult habitus. Color pattern.‐ The head is darkly pigmented, particularly on the area forward of the epicranial suture (Fig.1); the black suture line extends laterally beyond the ocelli about midway to the eye. Dark pigment extends laterally in front of the eye to the margins of the head, but an obscure pale spot interrupts the dark pigment anterolaterad to the ocelli. Forward of the M‐ line a dark median area is surrounded by pale pigment. The pronotum is dark brown with darker rugosities and black sutures. Abdominal terga 6‐10 are dark, with tergum 10 very dark over most of the surface (Fig. 2); abdominal sterna 8‐10 are dark brown to black. Apical cercal segments are black, but several segments at midlength are banded with dark apices and pale basal bands. Male aedeagus. Aedeagal tube + sac long and slender, caecum very small (Figs. 3‐4). Dorsal patch broad basally, covering entire surface, but patch narrows gradually to a point on the caecum from near midlength. Lateral sclerites slender and projecting forward beyond base of dorsal patch.Published as part of Stark, Bill P., 2007, Additional Characters In Perlesta Baumanni Stark (Plecoptera: Perlidae), With Notes On Other Ouachita Mountain Species, pp. 43-45 in Illiesia 3 (5) on pages 43-45, DOI: 10.5281/zenodo.475869
Cryptoperla karen Stark 1989
No full text<i>Cryptoperla karen</i> Stark <p> <i>Cryptoperla karen</i> Stark, 1989:504.</p> <p>Holotype ♂, Chiang Mai, amp. Fang, tambon Kew Kor Mah, Thailand (United States National Museum)</p> <p> <i>Cryptoperla karen</i>: Stark & Sivec 1999:238. Vietnam record</p> <p> <b>Material examined.</b> Vietnam: Vinh Phu, Tam Dao, lower waterfall of stream flowing through town, UV light, 11 May 1996, B. Hubley, D.C. Darling, ROM 961030, 1 ♂ (ROM). Same site, 11 May 1996, B. Hubley, D.C. Darling, ROM 961029, 1 larva (ROM). Tam Dao, 800-1100 m, 19 May-13 June 1995, H. Malicky, 1 ♂ (PMSL).</p> <p> <b>Remarks.</b> Stark & Sivec (1999) previously recorded this species from two Vietnamese sites and compared the eggs of Thai and Vietnamese specimens.</p>Published as part of <i>Stark, Bill P. & Sivec, Ignac, 2007, New Species And Records Of Asian Peltoperlidae (Insecta: Plecoptera), pp. 104-126 in Illiesia 3 (12)</i> on pages 110-111, DOI: <a href="http://zenodo.org/record/4754627">10.5281/zenodo.4754627</a>
Going Beyond Counting First Authors in Author Co-citation Analysis
No full textThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
Doroneuria baumanni Stark & Gaufin 1974
No full textDoroneuria baumanni Stark & Gaufin (Figs. 9-12) Doroneuria baumanni Stark & Gaufin, 1974:88. Holotype ♂ (United States National Museum), Burney Falls State Park, Shasta Co., California Material examined. California: Siskiyou Co., Big Springs, Mt. Shasta City Park, 7 July 1979, B. Stark, K.W. Stewart, 1♀ (BPS). Oregon: Benton Co., Kiser Creek, Hwy 39, 1 June 2000, B. Stark, I. Sivec, M. Zúñiga, 3♂, 1♀ (BPS). Multnomah Co., Wahkeena Falls, 25 June 1985, B. Stark, 24♂, 4♀ (BPS). Washington: Pierce Co., Carbon River, 16 August 1999, B.C. Kondratieff, 1♂, 3♀ (BPS). Egg. Outline oval with short, narrow collar (Fig. 9). Egg length ca. 500 μm, equatorial width ca. 400 μm, collar length ca. 20 μm, width ca. 50 μm. Chorionic surface coarsely punctate with shallow pits over middle half of egg (Figs 10, 12.); punctate zone ca. 260 μm wide; area around collar and a narrow opercular ring around lid lack pits; some pits on lid form obscure follicle cell impression walls. Micropylar row located on lid (Fig. 11); orifices raised, canals not clearly visible on surface.Published as part of Stark, Bill P. & Green, Stephen, 2011, Eggs Of Western Nearctic Acroneuriinae (Plecoptera: Perlidae), pp. 157-166 in Illiesia 7 (17) on page 160, DOI: 10.5281/zenodo.476020
Anacroneuria marca Stark 1998
No full textAnacroneuria marca Stark http://lsid.speciesfile.org/urn:lsid: Plecoptera.speciesfile.org:TaxonName1838 Anacroneuria marca Stark, 1998: 575. Holotype ♂ (United States National Museum), Costa Rica, Heredia Province, Río Peje, Parque Nacional Braulio Carrillo Anacroneuria marca: Gutiérrez-Fonseca and Springer, 2011: 29 Material examined. PANAMA: Chiriqui Province: Cuenca 102, (Río Chiriqui Viejo), afluente Río Chiriqui Viejo, 8.89307°N, 82.59969°W, 2189 m, Las Nubes dentro del PILA, 19 September 2016, C. Nieto, M. Molinar, and A. Tuñon, 1 ♀ (COZEM); same except, Río Colorado, Mount Totumas Biological Reserve, 8.873556°N, 82.689993°W, 26 June 2016, B. Armitage, 3 ♂ (COZEM); same except, 1 September 2016, 2 ♂; Chiriqui Province: Cuenca 93 (Río Guabo), afluente Río Guabo, NNE Fortuna Dam, nr Fortuna Cabins, 8.77806°N, 82.19359°W, 1128 m, UV light, 21 January 2017, B. and T. Armitage, 10 ♂ (COZEM); same except, 18 February 2018, 22 ♀ (COZEM); Chiriqui Province: Cuenca 108 (Río Chiriqui), Quebrada Hondo, NNE Fortuna Dam, 8.75003°N, 82.23884°W, 1128 m, B. and T. Armitage, 2 ♂ (COZEM). Comments. Stark (2014) and Armitage & Stark (2017) reported this species from Chiriqui Province. The species appears more common in Costa Rica (Stark 1998) than in Panama.Published as part of Stark, Bill P. & Armitage, Brian J., 2018, The Plecoptera of Panama. II. Two new species, one new country record, and additional locality records of Anacroneuria (Perlidae) from western Panama, pp. 315-326 in Zootaxa 4459 (2) on pages 318-319, DOI: 10.11646/zootaxa.4459.2.6, http://zenodo.org/record/145866
Moselia zonata Stark & Harrison 2016, sp. n.
No full text<i>Moselia zonata</i> Stark & Harrison, sp. n. <p>Banded-wing Needlefly</p> <p>(Figs. 2, 3-8, 9-40, 42, 52)</p> <p>http://lsid.speciesfile.org/urn:lsid: Plecoptera.speciesfile.org: TaxonName:492220</p> <p> <i>Moselia infuscata</i>: Gill et al., 2015: 593 (in part), “Banded- wing phenotype”, population 1</p> <p> <b>Material examined.</b> Holotype ♂, <b>OREGON</b>, <b>Jackson Co.</b>, Sheep Creek, Wagner Gap Road, NFD 22 Rd, 10.5 miles SW Talent, 42° 06.442’N, 122° 47.921’W, 22 May 2014, B. Stark, B.C. Kondratieff, J.B. Sandberg, C.J. Verdone (USNM). Paratypes: <b>CALIFORNIA: Butte Co.</b>, Butte Creek, Humboldt Rd, above Colby Creek, 40.11138° N, 121.49526° W, 25 May 2014, B.C. Kondratieff, C.J. Verdone, 15♂, 9♀ (CSUC), 1♂ SEM. <b>Del Norte Co.</b>, small falls into Patrick Creek, 41° 54.321’ N, 123° 51.357’ W, 24 May 2014, B. Stark, A.B. Harrison, 1♀ (BPSC). <b>Humboldt Co.</b>, tributary of Willow Creek, 2.7 miles E Berry Summit, Hwy 299, 19 May 1998, S.W. Szczytko, B. Stark, C. R. Nelson, I. Sivec, 5♂, 14♀ (BYUC). 2♀ SEM. tributary of Willow Creek, 2.5 miles E of Berry Summit, 19 May 1998, B. Stark, I. Sivec, C. R. Nelson, S.W. Szczytko, 2♂, 1♀ (BPSC), 4♂, 5♀ (BYUC). tributary of Willow Creek, 0.5 miles E of Cedar Creek, Hwy 299, 25 April 1987, R. W. Baumann, B. Stark, C. R. Nelson, S. Wells, 8♂, 5♀ (BPSC), 15♂, 15♀ (BYUC), 3♂, 1♀ SEM. tributary of Ruby Creek, first stream E of highway crossing, 22 April 1993, G. R. Fiala, 41♂, 25♀ (BYUC), 1♂ SEM. small creek N of Fish Lake, 24 April 1987, R. W. Baumann, B. Stark, C. R. Nelson, S. Wells, 15♂, 10♀ (BYUC), 1♂ SEM. small stream, 0.5 miles E Cedar Creek, Hwy 299, 25 April 1987, B. Stark, R. W. Baumann, C. R. Nelson, S. Wells, 8♂, 5♀ (BPSC), 2♂ SEM. Prairie Creek, Prairie Creek Redwoods State Park, Drury Parkway at trailhead, 41° 24.459’ N, 124° 01.827’ W, 25 May 2014, B. Stark, A.B. Harrison, 1♂ (BPSC), 1♂ SEM. tributary Prairie Creek, 10.6 miles N Orick, 22 May 1982, B. Stark, D. Ziegler, 1♂ (BPSC). <b>Siskiyou Co.</b>, small stream, 41.90335° N, 123.90345° W, 19 April 2013, C. Kerst, 3♂, 1♀ (CSUC), 1♂ SEM. <b>Tehama Co.</b>, South Fork Calf Creek, Hwy 32 at FR 27N06, 26 April 2010, B.C. Kondratieff, R. W. Baumann, 8♂, 2♀ (CSUC) 1♂ SEM. <b>Trinity Co</b>., Bidden Creek, W of Cedar Flat, Hwy 299, 25 April 1987, R. W. Baumann, B. Stark, C. R. Nelson, S. Wells, 4♂, 8♀ (BYUC), 1♂ SEM. unknown stream, Hwy 36, Mile 12.12, South Fork Mountain, approximate co-ordinates 40.39366° N, 123.41517° W, 2 May 2014, J.J. Lee, 5♂, 6♀ (JJLC), 1♂, 1♀ SEM. <b>OREGON: Curry Co.</b>, Fly Catcher Spring, 12 miles E Hwy 101, Hunter Creek Rd, 42° 22’ N, 124° 18’ W, 9 June 2005, R.W. Baumann, B.C.</p> <p>Kondratieff, 10♂, 13♀ (BYUC), 2♂ SEM. <b>Jackson Co.</b>, Ashland Ski Road seeps, 2.5 miles W Interstate Highway 5, 9 June 2004, B. Stark, R. W. Baumann, 8♂, 17♀ (BPSC), 1♂, 1♀ SEM. Jim Creek, Wagner Gap Road, NFD 22 Rd, 11.1 miles SW Talent, 42.10609 N, 122.7874 W, 22 May 2014, B. Stark, B.C. Kondratieff, J.B. Sandberg, C.J. Verdone, 1♂, 1♀ (BPSC), 4♂, 2♀ (CSUC), 1♂ SEM. Sheep Creek, Wagner Gap Road, NFD 22 Rd, 10.5 miles SW Talent, 42.11254 N, 122.7858 W, 22 May 2014, B. Stark, B.C. Kondratieff, J.B. Sandberg, C.J. Verdone, 4♂, 2♀ (BPSC), 4♀ (CSUC), 1♂ SEM. Split Rock Creek, Wagner Creek Road, 12.4 miles SW Talent, 42.17018 N, 122.784174 W, 22 May 2014, B. Stark, B.C. Kondratieff, J.B. Sandberg, C.J. Verdone, 2♂, 1♀ (BPSC), 6♀ (CSUC), 1♂ SEM. Wagner Creek, Wagner Gap Road, 5.9 miles SW Talent, 42.17018 N, 122.784174 W, 22 May 2014, B.C. Kondratieff, B. Stark, J.C. Sandberg, C.J. Verdone, 9♂, 5♀ (CSUC). <b>Josephine Co.</b>, Lake Creek and seeps along NF-070, 42.09274 N, 123.37444 W, 21 May 2014, B. Stark, B.C. Kondratieff, J.B. Sandberg, C.J. Verdone, 1♂ (BPSC).</p> <p> <b>Additional specimens: CALIFORNIA: Alpine Co.</b>, Willow Creek, 6 miles NW Woodfords, 38.827053 N, 119.9033331 W, 27 July 1995, R.L. Bottorff, 1♂ (RLBC), 1♂ SEM. <b>Butte Co.</b>, spring tributary Big Chico Creek, Hwy 32, 40° 08’ N, 121° 40’ W, 26 April 2010, R.W. Baumann, B.C. Kondratieff, 12♂, 7♀ (BYUC), 2♂ SEM. <b>El Dorado Co.</b>, Bendorf Spring, NE Grizzly Flat, 3 May 1995, R.L. Bottorff, 7♂, 2♀ (RLBC), 1♂ SEM. tributary North Cosumnes River, 11 miles E Grizzly Flat, 38.64018 N, 120.31283 W, 30 June 1986, R.L. Bottorff, 1♂ (RLBC), 1♂ SEM. North Fork Cosumnes River, Sciaroni Crossing, 3 miles N Grizzly Flat, 38.669092 N, 120.533568 W, 20 April 1981, R.L. Bottorff, 1 ♂ (RLBC). <b>Glenn Co.</b>, spring fed creek, 3 miles above Salt Creek, 15 March 1984, J. Stanger, 3♂, 1♀ (BYUC), 2♂ SEM. <b>Mendocino Co.</b>, Caspar Creek, Jackson Demonstration State Forest, 18 May 1998, B. Stark, C. R. Nelson, S.W. Szczytko, I. Sivec, 1♂, 1♀ (BPSC), damaged paraprocts. Irish Gulch, 1 mile above Hwy 1, 39° 01.37’ N, 123° 59.57’ W, 7 April 2006, L.D. Bottorff, 1♂, 3♀ (RLBC), 1♂ SEM. <b>Mono Co.</b>, west source spring on E North Canyon Creek, ca. 7.6 miles ESE Mono Mills, 37.8591 N, 118.8216 W, 1 August 1998, M. Myers, 1♂ (BYUC). <b>Nevada Co.</b>, spring on Sagehen Creek, Sagehen Creek Biological Station, 39.43° N, 120.25° W, 20 June 2009, R.W. Baumann, B.C. Kondratieff, 9♂, 13♀, 2♂ SEM. <b>Plumas Co.</b>, Domingo Springs, Feather River Rd/Old Red Bluff Rd, 40° 21.672’ N, 121° 20.842’ W, 26 May 2014, B. Stark, A.B. Harrison, 14♂, 6♀ (BPSC), 1♂ SEM. same site, 8 June 2004, B. Stark, R.W. Baumann, 8♂, 16♀ (BPSC). same site, 25 May 2007, B.C. Kondratieff, R.W. Baumann, 12♂, 13♀ (CSUC). <b>Shasta Co.</b>, East Fork Hat Creek, Hwy 89, Lassen Volcanic National Park, 8 June 2004, B. Stark, R.W. Baumann, 1♂ (BPSC), 1♂ SEM. Old Boundary Spring, Lassen Volcanic National Park, 8 June 2004, B. Stark, R.W. Baumann, 31♂, 8♀ (BPSC), 1♂ SEM. <b>Siskiyou Co.</b>, Big Springs, Mt. Shasta City Park, 41° 19.692’ N, 122° 19.605’ W, 8 June 2004, B. Stark, R.W. Baumann, 2♂, 2♀ (BPSC), 1♂ SEM. Black Butte Springs, 41° 23.667’ N, 122° 21.626’ W, 23 May 2014, B. Stark, B.C. Kondratieff, J.B. Sandberg, C.J. Verdone, 3♂, 1♀ (BPSC), 1♂ SEM. <b>Tehama Co.</b>, Bluff Falls, Hwy 89, 8 June 2004, B. Stark, R.W. Baumann, 1♂ (BPSC), 1♂ SEM, damaged paraprocts. <b>Trinity Co.</b>, East Fork Trinity Creek at campground, 40.77229° N, 122.92150° W, 17 April 2014, C. Kerst, 2♂, 2♀ (CSUC). <b>NEVADA: Douglas Co.</b>, Corsser Creek, Hwy 207, Kingsbury Glade, 38.94806 N, 119.85004 W, 16 May 2013, R.L. Bottorff, 2♂ (RLBC), 2♂ SEM. Edgewood Creek, Stateline, 38.96315 N, 119.92562 W, 6 June 2014, R.L. Bottorff, 1♂ (RLBC). <b>Elko Co.</b>, Jarbidge Mountains, springbrook, 10 July 1999, A.L. Sheldon, 5♂, 7♀ (BYUC), 1♂ SEM. <b>Humboldt Co.</b>, Road Creek, E side Santa Rosa Range, 13 miles N Paradise Valley, 41.67881 N, 117.33959 W, 13 June 2013, R.L. Bottorff, 2♂ (RLBC), 2♂ SEM. Left tributary, Rebel Creek, Santa Rosa Range, 28 June 1999, A.L. Sheldon, 18♂, 9♀ (BYUC), 2 ♂ SEM. Singas Creek, Singas Creek Campground, W Paradise Valley, Santa Rosa Range, 41° 41’ N, 117° 64’ W, 15 June 2009, R.W. Baumann, B.C. Kondratieff, 12♂, 8♀ (BYUC), 2♂ SEM. Summer Camp Creek, Summit Lake Mountain, 1 July 1999, A.L. Sheldon, 3♂, 4♀ (BYUC), 2♂ SEM. <b>Washoe Co.</b>, small stream from Marlette Lake, Hwy 28, 24 June 2009, B. Stark, C. R. Nelson, A.B. Harrison, K.C. Nye, 3♂, 8♀ (BPSC), 1♂ SEM. Ophir Creek, Mt. Rose Hwy, Tahoe Meadows, 39.30118 N, 119.92132 W, 29 July 2013, L.D. Bottorff, R.L. Bottorff, 1♂ (RLBC), 1♂ SEM. Rock Creek, Granite Range, 2 July 1999, A.L. Sheldon, 5♂, 8♀ (BYUC), 2♂ SEM. Whites Creek, Whites Creek Trailhead, Rd 047, 39.38° N, 119.85° W, 16 June 2009, R.W. Baumann, B.C. Kondratieff, 14♂, 5♀ (BYUC), 2♂ SEM. <b>OREGON: Jackson Co.</b>, McDonald Creek, NFD 22 Rd, 22 May 2014, B.C. Kondratieff, C.J. Verdone, 1♂ (CSUC).</p> <p> <b>Adult habitus.</b> Male forewing length 5.0- 5.5 mm (n = 17), female 6.5 mm (n = 9). General body color dark brown, dorsum of head brown except for a transverse pale band extending behind ocelli between compound eyes. Pronotal disc mostly pale but with dark brown sutures; anterior and posterior sutures extend about 2/3 of pronotal width; on either side of median suture an irregular pale-brown, gnome, or somewhat C-shaped rugosity occurs (Figs. 3, 6). Wings brown, but with conspicuous pale humeral markings, and many specimens with an irregular broad pale band extending across wings from stigma to stigma (Fig. 2). Tibiae mostly pale along posterior margin but with dark bands at the distal and proximal margins.</p> <p> <b>Male genitalia</b> (n=41). Typical of the genus in most respects, but paraprocts are relatively short and the fin is relatively tall (Figs. 4, 7, 9-32, 39-40, 42). Paraproct body extending from base to fin apex 335- 395 μm; greatest paraproct height across fin apex 120-148 μm; posterior margin of fin and much of paraproct body pale, anterior and basal margin of paraproct body sclerotized, dark brown. Apical digit of the paraprocts 125-142 μm in length.</p> <p> <b>Female subgenital plate</b> (n = 6). Median lobe parabolic, partially projecting over tips of heavily sclerotized, blade-like, smooth lateral lobes. Sternum 8 with dark pigment interrupted on midline; sternum 9 sclerotized around lateral and posterior margins, but membranous in the area posterior to the subgenital plate (Figs. 5, 8, 33-36).</p> <p> <b>Egg.</b> Elongate oval, without collar. Micropyles not detected. Chorionic surface covered with large, hexagonal follicle cell impressions comprised of thin outer walls and a depressed floor bearing clusters of smaller hexagonal units (Figs. 37-38).</p> <p> <b>Larva.</b> Unknown.</p> <p> <b>Etymology.</b> The species name refers to the conspicuous, transverse pale band near the apex of the wings in many specimens. The proposed common name is “Banded- wing Needlefly” (Stark et al., 2012).</p> <p> <b>Diagnosis.</b> Male and female adult specimens can often be distinguished from those of <i>M. infuscata</i> by the apical pale band across the wings (Fig. 2), however, many specimens apparently lack this marking and it is more conspicuous in fresh specimens. The banded-wing character appears to be restricted to <i>Moselia</i> populations in the Humboldt/Trinity county area of northern California and the Jackson/Josephine/Curry county area of southern Oregon. Other California and Nevada specimens examined in this study did not display the banded-wing character. In addition, males have a broad, subapical, wing-like expansion (= fin) on the anterior paraproct margin (Figs. 9-32), and the paraproct body, extending from the paraproct base to the base of the apical digit, is approximately 335-395 μm (419-500 μm for <i>M. infuscata</i>). The paraproct fin is smoothly curved along the posterior margin from its junction near the hook through the point of greatest fin height; the greatest height of this structure ranges from approximately 120-148 μm (92-127 μm for <i>M. infuscata</i>). Fin shape varies among the specimens examined from an almost perpendicular (Figs. 22, 23, 26) to a more slanted profile of the apical fin margin relative to the longitudinal axis of the paraprocts (Figs. 9-11, 27-32), however, fin shape is relatively uniform at a given location. These data appear to be consistent with the DNA data reported by Gill et al. (2015) for these populations. The distribution of the species encompasses northern California, northern and northwestern Nevada, and extreme southwestern Oregon at the California border (Fig. 52).</p> <p>Gill et al. (2015) reported 3% mean sequence divergence for the CO1 gene between specimens we determine as this species from Split Rock Creek, Jackson Co., Oregon, and those from Big Springs, Mt. Shasta City Park, Siskiyou Co., California. They reported the same level of differentiation between the Big Springs, Mt. Shasta City Park population and specimens from Butte Co., California. Specimens from these three populations each have relatively high paraproct fins (Figs. 33-35) and relatively short paraprocts. In addition, the mean sequence divergence between these three populations and those from Big Spring, Sierra Co., California that we determined as <i>M. infuscata</i>, is 6% (Gill et al. 2015). Unfortunately, no genetic data are available for the Oregon and Washington populations of <i>M. infuscata,</i> or for the Nevada populations of <i>M. zonata.</i></p>Published as part of <i>Stark, Bill P. & Harrison, Audrey B., 2016, The Banded-Wing Moselia (Plecoptera: Leuctridae) Revisited, pp. 42-58 in Illiesia 12 (9)</i> on pages 44-51, DOI: <a href="http://zenodo.org/record/4757741">10.5281/zenodo.4757741</a>
Anacroneuria benedettoi Stark 1998
No full text<i>Anacroneuria benedettoi</i> Stark <p>http://lsid.speciesfile.org/urn:lsid: Plecoptera.speciesfile.org:TaxonName:1964</p> <p> <i>Anacroneuria benedettoi</i> Stark, 1998: 557. Holotype ♂ (United States National Museum), Río Los Ahogados, Guanacaste, Costa Rica</p> <p> <b>Material examined. PANAMA:</b> Bocas del Toro Province: Quebrada Rambala, Rambala Jungle Lodge, 3.74 km SSE Rambala, 8.91543°N, 82.1.5527°W, Malaise trap, 6–12 February 2017, E. Carlson, 1 ♂ (<b>COZEM</b>).</p> <p> <b>Comments.</b> This species was previously reported from Bocas del Toro province by Stark (1998) and from the Caldera River, Chiriqui Province by Castillo Sánchez <i>et al</i>. (2018).</p>Published as part of <i>Stark, Bill P. & Armitage, Brian J., 2018, The Plecoptera of Panama. II. Two new species, one new country record, and additional locality records of Anacroneuria (Perlidae) from western Panama, pp. 315-326 in Zootaxa 4459 (2)</i> on page 316, DOI: 10.11646/zootaxa.4459.2.6, <a href="http://zenodo.org/record/1458661">http://zenodo.org/record/1458661</a>
Erősterű kétfotonos átmenetek során indukált Stark eltolódások numerikus vizsgálata
No full textAz atomok és molekulák lézertérrel végzett kontrolljában jelentős szerepet játszik az, hogy nagy intenzitású terekben az energiaszintek eltolódnak (Stark eltolódás). A szakdolgozatomban azt tanulmányoztam miként befolyásolja ez a jelenség a Na atom vegyértékelektronjának viselkedését erős lézertérben. Ehhez effektív (kétállapotú) és egzakt (67 állapotú) modellt használtam. A folyamat szimulációjához az időfüggő Schrödinger egyenletet kellett megoldanom egy saját fejlesztésű programmal, ami a 4-ed rendű Runge-Kutta algoritmust implementálja. Fázismoduláció nélküli állandó frekvenciájú lézer segítségével sikerült hatékony átmenetet elérnem a Na atom vegyértékelektronjának két sajátállapota (3s és 4s) között, illetve összefüggéseket találtam a maximális populációtranszfert eredményező lézerparaméterek és a Stark eltolódások között.tbenFizika BScBSc/B
- …
