265 research outputs found
Solar Power in the Garden State
No full textThis special issue on energy and solar power in New Jersey was made possible because of the extensive portfolio of research centers and institutes at the Edward J. Bloustein School of Planning and Public Policy. Dr. Frank A. Felder, an Associate Research Professor, has been director of the School’s Center for Energy, Economic & Environmental Policy (CEEEP) since 2006. Frank is a nuclear engineer with a PhD degree from MIT, and he, along with his CEEEP colleague, Shankar N. Chandramowli, coauthored the main article in this issue of the Advance & Rutgers Report. CEEEP has worked extensively with the New Jersey Board of Public Utilities on projects, including New Jersey’s current Energy Master Plan.Shining Brightly: Bloustein's Centers of Excellence / by James W. Hughes and Joseph S. Seneca -- Solar Power in the Garden States / by Shankar N. Chandramowli and Frank A. Felder.Guest contributors include Shankar N. Chandramowli and Frank A. Felder, PhD, Director—Center for Energy, Economic and Environmental Policy at the Edward J. Bloustein School of Planning and Public PolicyReports published as Issue Paper Number 5, May 2011, in Advance & Rutgers Report, Special Issue
Finding Shaw: A Hard Look at American Theater Trends, Dwindling Technique, and the Next Generation of Actors
No full textABSTRACT
Is Shaw's legacy in trouble? As theaters seek to produce smaller plays, and American actor training seems more geared toward the intimacy of film and TV, how do we continue to pitch the plays of Shaw in regional theaters across the country? Susan Felder, educator, director, and professional actor, sits down with two directors known for their productions of Shaw in the Midwest. The three discuss the difficulties and joys of producing Shaw plays in America, changing audience perceptions, and the challenges of training a generation of new actors with the tools necessary to tackle Shaw's plays. The obstacles are numerous. But in the end, what we gain by fighting to produce the plays of Shaw may be even more timely than anyone expected.</jats:p
Homegoing Service Of Susan V. Carruthers
No full textFuneral program for Susan V. Carruthers, born November 26, 1914 and died July 22, 1988. The funeral was held July 27, 1988 at St. Paul United Methodist Church, officiated by Rev. Robert E. Felder. The funeral arrangements were made through Sutton-Sutton Mortuary, Inc. and she was buried in Meadowlawn Memorial Park in San Antonio, Texas
Cooperative Learning in a Sequence of Engineering Courses: A Success Story
No full textThis paper, from Richard M. Felder, the Hoechst&nbsp;Celanese Professor of Chemical Engineering at North Carolina State University, cover cooperative learning in engineering courses. Cooperative learning is explained, as well as a chronology of its implementation by the author, and an summative evaluation of the experiment.&nbsp
How About a Quick One?
No full textIn this article, the author discusses the advantages of active teaching and learning methods vs. chalk and talk traditional teaching with particular relevance for technical courses. Felder describes formats and strategies for small-group in-class exercises and producing the one-minute paper
Sayixa Theil & Felder 2020, n. gen.
No full textGenus <i>Sayixa</i> n. gen. <p>urn:lsid:zoobank.org:act: 2312947B-988C-442F-B00C-8BCBCE273BC2</p> <p> TYPE SPECIES. — <i>Sayixa monodactyla</i> (Say, 1818) n. comb. [<i>Pinnixa</i>].</p> <p> ORIGINAL DESCRIPTION FOR <i>PINNIXA</i> [<i>PINNOTHERES</i>] <i>MONODACTYLA</i> (SAY, 1818). — “ <i>P. monodactylum *</i> (male) Thorax transverse; hands monodactyle. […]</p> <p> <i>Thorax</i> transversely subeliptical, narrowing each side to the middle of the lateral edge, which is rounded, a tubercle each side marking the situation of the anterior lateral angles, surface punctured; <i>orbits</i> suborbicular; <i>anntennae</i> [sic], exteriors subequal to the breadth of the clypeus; <i>hand</i> oblong, somewhat quadrate; <i>palm</i> concave and ciliated in the middle, a spiniform angle instead of a finger, with a tooth at its base, and another at the base of the thumb larger; <i>thumb</i> abruptly incurved at base, rectilinear towards the tip, with an angle at the interior middle, tip acute, attaining the tip of the spiniform angle; <i>feet</i>, second, fifth and third pairs subequal, the latter rather larger, fourth pair larger, and with the fifth pair with somewhat dilated tibia; <i>abdomen</i> with a few larger punctures, terminal joint rounded at tip, entire, ciliated and attaining the tip of the geminate joints of the pedipalpi.</p> <p>Length three tenths, breadth one half an inch.</p> <p>This curious animal occurs in the Richmond Museum. Mr. J. Warrell, the proprietor of that interesting establishment, supposes it to be American, but whether from our eastern or western coast he could not say. It is particularity remarkable in having monodactyle hands, a character which in a very rigid arrangement would not only separate it from the genus Pinnotheres, but also from the preceding species as a distinct genus. The tibia of the fourth and fifth pairs of feet are somewhat dilated, but the corresponding tarsi are accidentally wanting in this specimen.”</p> <p>DIAGNOSIS. — Carapace transversally subeliptical, wider than long, punctate, narrowing toward rounded lateral edges; anterolateral margins each with single lobiform tooth or tubercle near or just anterior to lateral extreme. Third maxilliped with ischiomerus subtrapezoidal; propodus and dactylus elongate, longer than carpus; dactylus inserting near base of propodus, reaching beyond end of propodus. Chelipeds heavy, palm lacking longitudinal lines of setae; cheliped fixed finger strongly shortened, reduced to spiniform angle, with sharp tooth at base of dactylus.</p> <p>First two ambulatory legs (P2, P3) slender, P4 and P5 somewhat stouter; lengths P4> P3> P2> P5. Male pleon subtrapezoidal, somites 4-6 constricted; telson oblong subellipsoidal, much wider than long.</p> <p>ETYMOLOGY. — Named for Thomas Say, author of the type species of this new genus, and first author to describe pinnotherid species after Linneaus.</p> <p>MATERIAL EXAMINED. — In addition to the material included in the phylogenetic analyses (Table 1) one sample was available for examination: MNHN-IU-2017-9368 (= former ULLZ 8569) (offshore, northern Gulf of Mexico).</p> <p>REMARKS</p> <p> In describing the species <i>Pinnotheres monodacytlum</i>, later transferred to <i>Pinnixa</i>, Say (1818) indicated that this taxon presented characters that “would not only separate it from the genus <i>Pinnotheres</i>, but also from the preceding species as a distinct genus”. The “preceding species” he is referring to is <i>Pinnotheres cylindricum</i>, which would become later the type of the genus <i>Pinnixa</i>. He discusses in that work the differences between the two species and the genus <i>Pinnotheres</i>, but he chose to maintain both within the genus <i>Pinnotheres</i>. Later, in 1846, Adam White, assistant in the Zoological Deparment of the British Museum, established the genus <i>Pinnixa</i> for <i>P.cylindrica</i> on the basis of its carapace being much wider than long, its having a larger cheliped palm when compared to <i>Pinnotheres</i>, and on the relative lengths of the ambulatory legs. He, however, did not include what we herewith assign to <i>Sayixa monodactyla</i> n. comb. in the genus <i>Pinnixa</i>, most likely because he had not found the opportunity to examine it. According to Rathbun (1918), <i>Sayixa monodactyla</i> n. comb. had not been seen since the type was reported upon. Moreover, the type in Richmond Museum was, also according to her, probably not extant.</p>Published as part of <i>Theil, Emma Palacios & Felder, Darryl L., 2020, Phylogeny of the genus Pinnixa White, 1846 (Crustacea, Brachyura, Pinnotheridae) and allies inferred from mitochondrial and nuclear molecular markers, with generic reassignment of twenty-one species, pp. 85-103 in Zoosystema 42 (6)</i> on pages 97-98, DOI: 10.5252/zoosystema2020v42a6, <a href="http://zenodo.org/record/3695831">http://zenodo.org/record/3695831</a>
Franz Michael Felder: Bregenzerwalder Dorfgeschichten und Schriften, eine Erziehungsstudie
No full textThis thesis is the first known study to analyze the writings of the Austrian, Franz Michael Felder, as an educative device, which the author himself utilized to enlighten and instruct his country folk in Bregenzerwald, Vorarlberg.
An attempt is made to uncover the basic message inherent in all of Felder\u27s works: close family relationship, high moral standards and diligence are important to him; he fights petty prejudice, meaningless tradition and hypocrisy. The many native customs peculiar to the region are, of course, immanent in his literary production and, what is particularly significant, he stages a continuous battle against the social and political pressures of the time. He sees the need for community action in pooling meager resources to combat influential outside monopolies which stifle the economy of his remote alpine region.
Franz Michael Felder\u27s message is somber. It lacks the folksy homespun qualities observed in similar writers, such as Rosegger, Gotthelf, Hansjakob, Huggenberger, Löns, Schönherr and Ludwig Thoma. Felder educates his people to a better understanding of themselves and a greater tolerance of others. He seeks equality of rights and equal justice for everyone. With a seriously discerning attitude he probes local problems confronting his people; these he portrays in true to life situations, attempting to search the causes. While Felder does not advocate to change customs and established ways of life, he wants to better his people\u27s situation for their own welfare and self-improvement.
Felder\u27s literary importance is manifold: he writes from true experience, which he incorporates into beneficial teaching for his people; Austria in its entirety and much of Europe is quite akin to the style of rural living described by Felder for the Vorarlberg. Thus he captures a true picture of nineteen-century village life with its economic and social implications.
This study treats of Felder\u27s literary achievements only. It casually mentions his other, more visible accomplishments, such as the foundation of a dairy association, an agricultural produce co-op, a cattle insurance company, a weaving co-op. He established a library and a reading club. This he did in a relatively brief span of time for he died at the age of twenty-nine.
Not only did Felder make material life easier for his countrymen, he freed them spiritually as well. The research of this thesis concludes that Felder, though relatively unknown in literature is possibly the most influential and lasting of all Vorarlberg writers. His description does not have the pastoral serenity usually peculiar to village tales; there is little to see of the pretty mountain landscapes, or the cool green meadows with rustling brooks and cowbells ringing. Felder does not indulge the reader - instead he describes reality, actual people and their problems - the reader gets what he needs. This, then, is the universality of Felder\u27s work: in essence, he reflects truth
Affine Macdonald conjectures and special values of Felder–Varchenko functions
No full textWe refine the statement of the denominator and evaluation conjectures for affine Macdonald polynomials proposed by Etingof–Kirillov Jr. (Duke Math J 78(2):229–256, 1995) and prove the first non-trivial cases of these conjectures. Our results provide a q-deformation of the computation of genus 1 conformal blocks via elliptic Selberg integrals by Felder–Stevens–Varchenko (Math Res Lett 10(5–6):671–684, 2003). They allow us to give precise formulations for the affine Macdonald conjectures in the general case which are consistent with computer computations. Our method applies recent work of the second named author to relate these conjectures in the case of U_q(sl_2) to evaluations of certain theta hypergeometric integrals defined by Felder–Varchenko (Int Math Res Not 21:1037–1055, 2004). We then evaluate the resulting integrals, which may be of independent interest, by well-chosen applications of the elliptic beta integral introduced by Spiridonov (Uspekhi Mat Nauk 56(1(337)):181–182, 2001)
Correspondence to James Felder from Hugh Saussy, Jr., April 12,1960
No full textDated April 12, 1960, this letter is addressed to Mr. James Felder, President of the Student Government Association at Clark College in Atlanta, Georgia. The letter is from Hugh Saussey, Jr., a native Georgian and Priest in the Episcopal Church. Saussey commends Felder for his article titled "An Appeal For Human Rights", published in March 1960, as well as for the peaceful demonstrations at public lunch counters. He expresses sadness about the role of churches in segregation and discrimination, stressing that these practices contradict the teachings of Christ and the true essence of the Church. 2 pages
Hexapanopeus klausruetzleri Felder & Thoma 2022, n. sp.
No full textHexapanopeus klausruetzleri n. sp. (Figs 1A–F, 2A–J, 3A–C) Hexapanopeus nov. sp. — Thoma et al. 2014: 89, table 1, 92, fig. 1. Type material. Holotype: male, cw 9.9 mm, in dead conch shell on shallow subtidal sand flat behind reef break, off south end of South Water Cay, Belize, 16°48.682´N, 88°04.968´W, snorkeling, 1 m, 3 February 2011, coll. D. Felder, R. Lemaitre, J. Felder, S. Pecnik, & C. Tudge, USNM 1546469 (= ULLZ 12526 -A). Paratypes: 1 juvenile male, cw 7.2 mm, collection data same as for holotype, USNM 1661745 (= ULLZ 12526 -B); 1 juvenile female, cw 5.2 mm, in eroded dead conch shell from deep patchy Thalassia and sponge bed, off northeast side of Twin Cays, Belize, 16°50.133´N, 88°05.852´W, snorkeling, 4 m, 21 April 2015, coll D. Felder, J. Scioli, K. Barkel, J. Felder, & C. Craig, USNM 1549828 (= ULLZ 16524). Diagnosis. Carapace dorsal surface weakly convex, ovoid to weakly subhexagonal outline, wider than long (including anterolateral teeth), fronto-orbital width slightly exceeding 0.6 carapace width; front broadly convex with small median V-shaped notch separating shallow unimarginate lobes to each side, frontal margin of each lobe bearing slightly enlarged granules, lateral tooth of each frontal lobe obsolesent, lateral margin deflected to intersect antennal sinus; dorsal regions weakly defined, furrows of mesogastric, gastric, and anterior cardiac most evident; five anterolateral teeth, first tooth (outer orbital corner) subacutely angular, weakly separated from lobiform second by shallow depression of margin, third and fourth broadly lobiform to somewhat rounded or subrectangular, fifth small, subacutely angular. Third maxilliped merus distal margin sinuous, slightly produced to form small prominence near articulation with carpus. Cheliped merus superolateral margin with rough row of denticles, variably grouped to form serrate teeth, in major cheliped some forming sharp serrate teeth; carpus superior and lateral surfaces smooth to minutely granulate, microgranules forming weakly defined lines or surmounting weak elevations, supero-external surface marked by depression parallel to distal margin, internal margin with proximal angle weak, surmounted by line of low granules, distal angle stronger, forming blunt distally directed tooth. Major chela propodus mostly smooth to microgranulate, superior longitudinal crest weak, unarmed, adjacent external furrow shallow; dactylus opposable margin with slightly enlarged, lobiform basal tooth proximally. Ambulatory pereopods 2–5 relatively narrow, 2–4 subequal in size, merus length in all greater than 3 times greatest width, merus length approximating or slightly exceeding 1/2 carapace length; pereopod 5 smaller, propodus stouter than in other ambulatory pereopods, merus length not exceeding 1/2 length of carapace; merus in all ambulatory pereopods with superior margin unarmed, at most with dentiform granules variably concealed by plumose setae, inferior margin finely granulate; carpus superior margin with dense tract of short stout papilliform setae along crest; propodus superior margin with dense field of papilliform setae, dactylar-propodal locking mechanism not developed; dactylus stout proximally, inferior margin lacking subterminal prehensile tooth, superior margin densely covered by short papilliform setae, inferior margin with less dense slightly longer stiff simple setae. Male anterior thoracic sternum length (sternites 1–4) about 2/3 greatest width of fourth sternite (including episternites), eighth sternite exposed in subquadrate gap between lateral margin of flexed second pleonite and pereopod 5 coxa, exposure narrowly extending to anterior of condyle. Pleon of male with third through fifth pleonites fused, widest reach of first pleonite at its articulation with carapace, laterally rounded to articulation with second pleonite; telson subtriangularly rounded, widest in proximal one-third. Male first gonopod tip of highly modified panopeid form, subterminal tooth triangular, trunk in distal 1/4 of pleonal side bearing elongate field of heavy, rounded tubercles and granules extending to base of subterminal tooth. Male second gonopod less than one-third length of first gonopod. Applicable GenBank sequence accession numbers from Thoma et al. (2014) as follows for USNM 1546469 (= ULLZ 12526-A, holotype): (12S) KF683061; (16S) KF682952; (18S) KF682930; (COI) KF682772; (ENO) KF682722; (H3) KF682613. Description. Carapace (Figs 1A, B; 3A–C) about 1.3 times wider than long, dorsal surface weakly convex, transverse edges of frontal lobes unimarginate, frontal width slightly exceeding 0.5 fronto-orbital width, frontoorbital width slightly exceeding 0.6 greatest carapace width, dorsal outline ovoid to slightly subhexagonal, dorsal regions overall weakly marked by furrows, marginal furrows of mesogastric, gastric, and anterior cardiac regions evident, most others obsolescent, dorsal surfaces of frontal regions less elevated than those to posterior, transverse ridges of granules weak to obsolescent, dorsal surfaces appearing mostly smooth with low cover of small granules, densest and largest granules developed near frontal and anterolateral margins; frontal margin overall broadly convex, small V-shaped median notch separating shallow unimarginate lobes to each side, each with transverse tract of slightly enlarged granules along frontal margin, lateral tooth obsolescent (weakly evident in small specimens), forming rounded corner, lateral margin of front deflected, angled to intersect antennal sinus just below mesial end of tooth on supraorbital margin; supraorbital margin granulate, forming low obtuse tooth above antennal sinus, median and lateral fissures forming distinct breaks in marginal granulation, margin convex between fissures. Anterolateral teeth well developed along distinctly convex arch of granulate margin, granules strong along anterior slopes of teeth; anterior two of five teeth broadly fused into subquadrate prominence, first (outer orbital corner) subacutely angular, very weakly separated by shallow depression of granulate margin from weakly lobiform second; third slightly produced at coarsely granulate anterior angle, lateral margin convexly rounded; fourth broadly triangular to subquadrate, angular anterior tip subacute, lateral margin weakly convex; fifth small but distinctly developed, subacutely angular. Posterolateral finely granulate with sparse cover of elongate plumose setae. Infraorbital margin (Fig. 1B) granulate, forming strong subtriangular tooth mesially below base of eyestalk, margin sinuous laterally, ending in weakly produced infraorbital tooth. Pterygostomial and subhepatic regions with scattered low granules, coarsest near margins and along outer subhepatic region, lacking enlarged subhepatic tubercle, pterygostomial ridge distinctly granulate, slightly raised. Branchiostegite posterolaterally with sparse cover of elongate plumose setae, partially concealing ventrolateral margin above coxae of ambulatory legs. Eyestalk stout, anteriorly with short precorneal patch of enlarged, raised granules. Antenna with long flagellum, peduncle with fused basal article elongate, rectangular, extending into orbital fossa. Third maxilliped (Fig. 1C, D) protopod elongate, distal surface weakly grooved to intersect ventral edge of carapace, bearing pair of unequal projections along margin internal to groove, proximal to small podobranch gill positioned adjacent to pair of much longer, lamellate, arthrobranch gills. Epipod thin, flattened, strap-like, bearing long simple setae along length. Endopod basis subtriangular; ischium broadly subrectangular, proximal end curved laterally to intersect basis, external surface mostly smooth with few small, granules densest marginally and in external tract along distomesial margin, weak evidence of longitudinal furrow medially, mesial margin with sparse fringe of simple setae; merus subquadrate, lateral margin near straight to very weakly concave, distolateral margin weakly angular to rounded, distal margin sinuous, produced to form distinctly raised tooth-like prominence near articulation with carpus, obliquely excavate distomesially to accommodate articulation and flexure of carpus, internal surface with short transverse tract of mesially directed setae extending into excavation below articulation of carpus; carpus short, stout, internal surface with distal fringe and distal submarginal field of elongate setae overlying propodus; propodus cylindrical, internal, superior, and inferior surfaces distally with submarginal and distal rows of elongate, stiff setae; dactylus elongate, digitiform, tapering distally, length about 1.5 times that of propodus, internal surface and inferior margin bearing short stiff setae, tip bearing dense tuft of long stiff setae approximating length of dactylus. Exopod weakly arched, elongate, narrowly subrectangular, internal edge of mesial margin produced to form strong rounded subtriangular projection in distal third, flagellum multi-articulate, bearing numerous long, distally directed setae. Chelipeds (first pereopods) (Figs 1E, F; 3A–C) somewhat unequal, texture mostly smooth or minutely granulate, few setae overall, slightly more setose along some margins of merus and carpus; ischium and merus with few plumose setae along tracts of enlarged granules on inner margins, small dense setal tuft near proximal inner margin of ischium; merus superolateral margin with roughly defined row of denticles, variably grouped to form serrate teeth, in major cheliped some forming enlarged, sharp serrate teeth, proximally with few plumose setae; carpus superior and lateral surfaces smooth to minutely granulate, microgranules forming weakly defined lines or surmounting elevations, supero-external surface marked by distinct depression parallel to distal margin, proximal to which weakly defined ridges of microgranules on supero-external surface, internal margin with proximal angle ill-defined, rounded, surmounted by line of low granules, distal angle stronger, produced to form blunt, subtriangular, distally directed tooth. Major chela propodus mostly smooth to microgranulate, superior longitudinal crest of palm weak, unarmed, adjacent external furrow shallow; fixed finger of major chela subtriangular, exceeding ½ length of palm, inferior margin weakly convex, thick subacute tip curved upwards, opposable margin bearing five to six subtriangular to rounded teeth, proximal pair slightly fused, dark pigmentation extending proximally to base of finger but not onto palm; dactylus arched, slightly longer than fixed finger, opposable margin with slightly enlarged, lobiform, basal tooth proximally, distally with four to five somewhat rounded teeth separated by few smaller rounded denticles or granules, narrowing to subacute tip curved to cross to internal side of fixed-finger tip when flexed. Minor cheliped propodus similar to that of major in form and length, palm less robust and slightly less elevated than that of major, dorsal microgranulation slightly coarser than that of major; fixed finger of minor chela closely resembling but slightly longer than that of major, opposable margin with six enlarged triangular to subtriangular teeth, distal three most closely grouped and least acute, dark pigmentation extending proximally beyond finger slightly onto distal extreme of palm; dactylus of minor chela resembling that of major, opposable margin lacking enlarged basal lobiform tooth, cutting edge dentition slightly weaker than in major chela, five to six teeth enlarged, proximal three subtriangular, distal lower and more rounded, subacute tip crossing to internal side of fixed-finger tip when flexed. Ambulatory pereopods 2–5 relatively narrow, elongate, all of similar general form (Fig. 2A–E; 3A–C); pereopods 2–4 subequal in size, merus length in each greater than three times greatest width, length of meri approximating or slightly exceeding 1/2 carapace length; pereopod 5 smaller, propodus relatively stouter than in other ambulatory pereopods, merus length not exceeding 1/2 that of carapace; ambulatory pereopod meri all with superior margin relatively unarmed, at most bearing a few small dentiform granules variably concealed by row of elongate, plumose setae, distal superior margin ending in low, blunt angle beyond subdistal notch, inferior margin finely granulate, at most with few setae, granules coarsest, densest proximally on pereopod 2; carpus superior margin with pubescence formed by dense tract of short stout papilliform setae along crest, few longer narrower setae, crest roughly paralleling weak to obsolescent secondary crest on superoposterior surface, secondary crest stronger on fourth pereopod than others; propodus superior margin with pubescence formed by dense field of papilliform seta, few longer narrower setae, inferior margin lined by primarily short, narrow, simple setae along with few longer; dactylar-propodal locking mechanism not developed; dactylus stout proximally, narrowing in distal half to weakly falciform corneous tip, inferior margin lacking subterminal, calcareous, prehensile tooth, superior margin densely covered by short papilliform setae forming broad tract of thick pubescence, inferior margin with less dense tract of slightly longer stiff simple setae, both margins with few additional long simple setae, dactylus terminating in weakly hooked, acute corneous tip. Male anterior thoracic sternum length (sternites 1–4) longer than broad (Fig. 2F, G), length from acute anterior apex to suture between fourth and fifth sternites about 2/3 greatest width of fourth sternite (including episternites), sternopleonal depression in fourth sternite not unusually sculpted or excavate to accommodate first gonopod tips below flexed pleon, median line originating from triangular depression at posterior of fourth sternite, narrowing to smooth very shallow groove bisecting fourth sternite, becoming obsolete to anterior; fifth sternite with small granuliform tubercle (part of press-button locking system) to each side of sternopleonal depression, each centered near 3/5 of distance from sixth sternite to fourth sternite; fourth and fifth episternites narrowly angular, subtruncate to anterior, subacutely rounded to posterior, sixth and seventh episternites slightly broader and more rounded posteriorly, eighth sternite exposed only in subquadrate gap between lateral margin of flexed second pleonite and pereopod 5 coxa, exposure narrowly extending to anterior of condyle on pereopod 5 coxa. Pleon of male (Fig. 2F, G) with third through fifth pleonites fused, first pleonite widest at articulation with carapace, rounded to articulation with second; second pleonite widest proximally near articulation with first, narrowing distally; fused third through fifth pleonites widest at lateral flange of third, weakly sinuous laterally, narrowing distally, width at articulation with sixth pleonite about half that at wide flange of third, vestiges of sutures between fused pleonites obscure; sixth pleonite subrectangular, slightly broadened distally before articulation with telson; telson subtriangularly rounded, widest in proximal third. Male first gonopod tip (Fig. 2H, I) of highly modified panopeid form, subterminal tooth triangular, terminal lobes not well-separated to produce trifid appearance typical of most panopeid crabs, trunk in distal 1/4 of pleonal side bearing elongate field of heavy, rounded tubercles and granules extending to base of triangular subterminal tooth, distolateral margin bearing several stiff setae proximal to terminal lobes. Penis emerging from pore on mesial surface of pereopod 5 coxa concealed beneath seventh episternite, extending beneath lateral flange formed by base of first gonopod. Male second gonopod less than one-third length of first gonopod, narrowing to subacute tip bearing several subterminal setae (Fig. 2J). Color. The carapace and pereopods are primarily golden brown to pale orange in presently limited materials, most dorsal surfaces being speckled with scattered dark reddish brown spots (Fig. 3A–C). The pigment is overall darker on upper surfaces of chelipeds and ambulatory legs of larger specimens, especially the holotype, which is the largest. White borders the margins of most pereopod joints, and a distinct white spot is developed on the upper distal propodus on the cheliped, positioned immediately proximal to articulation of the movable finger. Fingers of the chelae vary in color from horn to reddish brown, with lighter tips. All pigmentation is pale in the most immature specimen. Etymology. The species name is assigned in recognition of Klaus Ruetzler, world authority on marine sponge biology, who also led the establishment of the Smithsonian Marine Field Station at Carrie Bow Cay, Belize and for many years directed the Caribbean Coral Reef Ecosystems (CCRE) program based there. His encouragement and support of collaborators and colleagues brought many to focus years of work in Belize, including the senior author of this paper. Size. Carapace widths ranged from 5.2 mm in the small female paratype to 9.9 mm in the male holotype. Distribution. At present known only from tropical waters in the vicinity of South Water Cay and Twin Cays along the barrier reef of Belize. Habitat. Thus far known from only high salinity shallow subtidal calcareous sand habitats (1–4 m depth), occupying dead gastropod shells on wash-over fans and back-reef flats of coral reefs, sometimes between patches of turtle grass and sponges. Remarks. Systematic and taxonomic studies of western Atlantic panopeid crabs have been advanced over recent decades through detailed comparative studies of male gonopods (Guinot 1967, 1968, 1969a –c, 1971, 1978, 1990; Martin & Abele 1986; Felder & Martin 2003). However, the advent of molecular genetic analyses has provided yet another powerful tool of particular value in understanding of phylogenetic relationships among otherwise very similar appearing panopeid crabs (Schubart et al. 2000, Thoma et al. 2009; Thoma et al. 2014; Felder & Thoma 2020). Thoma et al. (2014: 98), on the basis of molecular genetic analyses, concluded that confirmed membership of Hexapanopeus s.s. was restricted to very few species, with the only two named species at that time being the western Atlantic H. angustifrons and H. paulensis Rathbun, 1930. Their analysis also included several undescribed lineages, one of which is herein represented by H. klausruetzleri n. sp. Morphologically, mature males of both the previously described congeners differ markedly in first gonopod morphology from that found in Hexapanopeus klausruetzeri n. sp. (Fig. 2H, I), the first gonopods of H. paulensis and H. angustifrons having been previously illustrated by Williams (1965: figs 183D, E). Unfortunately, no mature female specimens of H. klausruetzleri n. sp. are presently available for description and comparative study of the fully developed female gonopore, a character that can also be of utility in panopeid crab separations. However, the previously described species of both sexes differ from H. klausruetzleri n. sp. in having a carapace front that is more truncate than arcuate, and in having the first and second anterolateral teeth distinctly separated (Williams 1965: figs 170, 171) rather than weakly defined to either side of a shallow depression (Fig. 1A, B). In addition, the anterolateral teeth are overall more angular and the carpus of the major cheliped is more roughly sculptured in both of the previously described species than in H. klausruetzleri n. sp. Sculpting of the major cheliped carpus in H. paulensis is especially distinct, with its dorsal surface typically bearing 8–15 well-defined knoblike tubercles. Sculpting of the carpus in H. angustifrons, while much less pronounced than in H. paulensis, is at least somewhat rougher than in H. klausruetzleri n. sp., the species to which it has a close sister relationship in molecular genetic analyses (Thoma et al. 2014). It appears that morphological separation of the closely related tropical Hexapanopeus klausruetzleri n. sp. and warm-temperate H. angustifrons can also be based upon additional characters, though presently limited material of the new species limits knowledge of their variability. Available specimens of H. klausruetzleri n. sp., exhibit stronger dentition of the cheliped merus, with its superolateral margin armed by row of denticles, some of which are grouped to form serrate teeth that are especially enlarged and sharply serrate on the major cheliped (Fig. 1F). By contrast, this margin in H. angustifrons is armed by a low ridge ending in a blunt triangular tooth distally, bearing at most a low tubercle and one or two very weak subacute teeth along its length (TAMU/TCWC 2-2789). Additionally, H. klausruetzleri n. sp. is overall smoother in texture and ornamentation of the pereopods than is H. angustifrons. This is especially evident in the better-defined and more coarsely granulate carpal ridges in H. angustifrons, both on the chelipeds and the ambulatory pereopods (though not depicted in detail by Williams 1965: fig. 170). The broadly angular, rounded, to subrectangular shape of the anterolateral carapace dentition in Hexapanopeus klausruetzleri n. sp. is somewhat similar to that seen in subadult to adult stages of Eurypanopeus abbreviatus (Stimpson, 1860), E. ater Rathbun, 1930, and Panopeus americanus Saussure, 1857. In both E. abbreviatus and E. ater, the carapace anterolateral teeth are more consistently evident as shallow lobes, with the third being distinctly subrectangular and most of its lateral margin straight, while the anterior and posterior ends form rounded corners. By contrast, the anterol
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