51,159 research outputs found
δ Orionis: Further temporal variability and evidence for small-scale structure in the interstellar medium
No full textWe report here the detection of both spatial and temporal variations in interstellar absorption in the line of sight to δ Orionis. First, we present new high-resolution (R≈110 000) observations of the interstellar D lines of Na i towards both δ Ori A and C. Comparison of these spectra highlights variations in absorption between the two stars, indicative of small-scale spatial structure in the interstellar medium in this direction over distances of less than ≈15 000 au (the projected separation of the two stars). Components with the largest Na i column densities and lowest velocity dispersions are, in general, found to be subject to the greatest differences; in fact the narrowest component detected is only observed in one of the sightlines. This effect has also been reported by Meyer & Blades. Secondly, we present new ultra-high-resolution (R≈900 000) Na i D1 observations and high-resolution (R≈110 000) Ca ii H & K observations of δ Ori A which, through ultra-high-resolution work conducted between 1994 and 2000, has been shown to exhibit a time-variable interstellar Na i absorption component. These new observations, while revealing the further reduction in intensity of the time-variable Na i absorption, indicate constant Ca ii absorption over the same period. This results in a dramatic reduction in the Na°/Ca+ abundance ratio, perhaps indicating the line of sight to be gradually probing a less-dense outer region of an absorbing filament
Athamanthia balucha subsp. balucha Howarth & Povolny 1976
No full textAthamanthia balucha balucha (Howarth & Povolny, 1976) (Plate 1, figs. 1–4; plate 2, fig. 2) Lycaena athamantis balucha — Howarth & Povolny 1976: 150. Lycaena phoenicurus balucha Howarth & Povolny, 1976 — Nekrutenko 1984: 47. Athamanthia balucha (Howarth & Povolny, 1976) — Bozano & Weidenhoffer 2001: 41. Type locality. Baluchistan, Old Urak, 27.VI. [19]28 [Pakistan, Balochistan Prov., 10 km NEE Quetta, Urak valley]. Material examined. Holotype ♂, Baluchistan, Old Urak, 27.VI.1928 (photo examined); paratypes: 1 ♀, same locality as in the holotype, 10.VI.1928 (photo examined); 1 ♂, Baluchistan: Urak, 26.V.1929 (photo and genitalia drawing from Nekrutenko (1984) examined), all W.H. Evans leg. (BMNH). Diagnosis. Orange submarginal band of wings upperside strongly reduced in both sexes, only 2–3 spots developed near tornal lobe (band usually well developed in A. phoenicura); thin silvery line extends from tornus midway along to outer margin (line poorly developed near tornal lobe in A. phoenicura); inner black strokes of submarginal orange band of wings underside reduced on both wings (well developed in A. phoenicura); valva widened, with rounded apex and developed inner fold (valva narrowed with indented apex and smaller inner fold in A. phoenicura); aedeagus strongly curved, crescent (aedeagus slightly curved in A. phoenicura). PLATE 1. Athamanthia spp., imagoes: 1— A. balucha balucha (Howarth & Povolny, 1976), holotype, ♂, Baluchistan, Old Urak, 27.VI.1928 (BMNH), photo from (Bozano & Weidenhoffer 2001), upperside; 2— Id., underside; 3— A. b. balucha, paratype, ♀, same locality as in the holotype, 10.VI.1928 (BMNH), photo from (Bozano & Weidenhoffer 2001), upperside; 4— Id., underside; 5— A. b. povolnyi (Howarth & Povolony, 1976), comb. nov., ♂, Central Afghanistan, Province Bamyan, Bamyan district, 4 km SE Sabzak vill., 34°51'48" N, 67°41'13" E, 2700 m, 09.VII.2013, I.G. Pljushtch leg. (SIZK), upperside; 6— Id., underside; 7— A. b. povolnyi (Howarth & Povolony, 1976), comb. nov., ♀, Central Afghanistan, Province Bamyan, Bamyan district, 4 km SE Sabzak vill., 34°51'48" N, 67°41'13" E, 2700 m, 09.VII.2013, I.G. Pljushtch leg., (SIZK), upperside; 8— Id., underside; 9— A. b. athamantides (Eckweiler & ten Hagen, 2001), comb. nov., ♂, South Eastern Iran, Kerman Province, 20 km SE Makhan, 2450 m, 19.VI.2014, I.G. Pljushtch leg., gen. prep. AK0068 (AKM), upperside; 10— Id., underside; 11— A. b. povolnyi (Howarth & Povolony, 1976), comb. nov., holotype, ♂, East Afghanistan, Province Kabul, Sarobi, 12.IV. [19]65, leg. Povolny (MMB), upperside; 12— Id., underside; 13— A. b. povolnyi (Howarth & Povolony, 1976), comb. nov., labels of the holotype; 14— A. phoenicura (Lederer, 1871), ♂, Turkmenistan, W Kopet Dagh Mts., Aydere gorge, 13.VI.1985, A.L. Devyatkin leg. (AKM), upperside; 15— Id., underside; 16— A. phoenicura (Lederer, 1871), ♂, Turkmenistan, W Kopet Dagh Mts., Aydere gorge, 13.VI.1985, A.L. Devyatkin leg. (AKM), upperside; 17— Id., underside. PLATE 2. Athamanthia spp., male genitalia (genital capsule in ventral view, valvae in lateral view from inside, aedeagus in lateral view): 1— A. phoenicura (Lederer, 1871), Turkmenistan, W Kopet Dagh Mts., Aydere gorge, 13.VI.1985, A.L. Devyatkin leg., gen. prep. AK0064 (AKM); 2— A. balucha balucha (Howarth & Povolony, 1976), paratype, Baluchistan: Urak, 26.V.1929, original illustration from Nekrutenko (1984); 3— A. balucha povolnyi (Howarth and Povolony, 1976), comb. nov., Central Afghanistan, Province Bamyan, Bamyan district, 0.5 km SE Sabzak vill., 34°52'41" N, 67°39'14" E, 2790 m, 08– 09.VII.2013, Yu. Ye. Skrylnik leg., gen. prep. AK0067 (AKM); 4— A. balucha athamantides (Eckweiler & ten Hagen, 2001), comb. nov., South Eastern Iran, Kerman Province, 20 km SE Makhan, 2450 m, 19.VI.2014, I.G. Pljushtch leg., gen. prep. AK0068 (AKM). Letters indicate on diagnostic characters (see Diagnosis part): a—shape of apex of valva; b—size of inner fold of valva; c—shape of aedeagus.Published as part of Krupitsky, Anatoly V., Pljushtch, Igor G. & Skrylnik, Yuriy Ye., 2017, Systematic position of two Athamanthia Zhdanko, 1983 (Lepidoptera, Lycaenidae) taxa from the Iranian Plateau, pp. 575-581 in Zootaxa 4232 (4) on pages 576-578, DOI: 10.11646/zootaxa.4232.4.7, http://zenodo.org/record/31328
Josephiella Matsunaga & Howarth & Kumashiro 2019, n. sp.
No full text<i>Josephiella</i> n. sp. A (apparently undescribed) <p> <b>NEW STATE RECORD</b></p> <p> An agaonid wasp new to science was discovered causing galls on the stems of <i>Ficus microcarpa</i>. Terminal stems of affected trees appeared unhealthy with a sparse foliar canopy. Initial observers of this damage were under the assumption that the same species which causes leaf galling on <i>F. microcarpa</i> (<i>Josephiella microcarpae</i>) was also causing the galling on stems of the same plant. However, closer examination of the stem-galling wasps showed that while both the leaf-galler and the stem-galler are morphologically similar in many ways, this in fact may be a different species. Both leaf and stem-gallers can be found on the same plant. Jean-Yves Rasplus, co-author of the leaf-galling <i>J. microcarpae</i>, agreed that this could be an undescribed species and is currently working on its species description.</p> <p> Subsequent to the initial discovery of this stem-galler on Oahu in 2012, infested <i>F. microcarpa</i> were quickly noted on Hawaii and Maui. In May, 2016, galled <i>F. microcarpa</i> stems with exit holes were collected from Molokai and in July, 2017, from Kauai. However, material from these islands were too old and no adults could be recovered. Therefore, we do not list the collection data below, and in the list of new species we noted a question mark next to these islands until the adults are confirmed. <i>Josephiella</i> n. sp. A, along with <i>Josephiella microcarpae</i>, lobate lac scale (<i>Paratarchardina pseudolobata</i>), and other ficus-feeding species has contributed to the weakening of large banyan trees on Oahu.</p> <p> <b>Collection records: OAHU</b>, Manoa, 13.VII.2012, ex. <i>Ficus microcarpa</i> stems, coll. D. Hulbert, det. J.-Y. Rasplus, 6.X.2012.</p> <p> <b>HAWAII</b>, Hilo, 30.VII.2012, ex. <i>F. microcarpa</i> stems, coll. C. Hirayama, L. Larish & S. Chun, det. B. Kumashiro, VIII.2012.</p> <p> <b>MAUI</b>, Wailuku, 6.VIII.2012, ex. <i>F. microcarpa</i> stems, coll. M. Fukada, VIII.2012. Vouchers at HDOA.</p>Published as part of <i>Matsunaga, Janis N., Howarth, Francis G. & Kumashiro, Bernarr R., 2019, New State Records and Additions to the Alien Terrestrial Arthropod Fauna in the Hawaiian Islands, pp. 1-71 in Proceedings of the Hawaiian Entomological Society 51 (1)</i> on pages 11-12, DOI: <a href="http://zenodo.org/record/10832895">10.5281/zenodo.10832895</a>
How to change the government without causing a general election
No full textDavid Howarth explains how the Fixed Term Parliaments Act 2011 has altered the options for no confidence motions in Parliament, and how an opposition party might form a government without there being a general election
RRS John Murray Cruises 11/75 leg 1, 15-22 August 1975, 13/75 leg 2, 23-29 September 1975 and 14/75 leg 3, 10-17 October 1975
No full textCulicoides tamada Howarth 1985
No full textC. tamada Howarth 1985: 39 Material examined. Thailand, Trang, Tambon Khuan kun, LT near goat shed, 7.72761 °N, 99.32378 °E, 12.Dec. 2012, (1 female); 30.Oct. 2012, (1 female) Diagnosis. Female: The only species of C. subg. Trithecoides with brown markings on the scutum and with SCo (Sensillum Coeloconicum) distribution 1,11– 13. Distribution. Lao PDR, Thailand (new record).Published as part of Thepparat, Arunrat, Bellis, Glenn, Ketavan, Chitapa, Ruangsittichai, Jiraporn, Sumruayphol, Suchada & Apiwathnasorn, Chamnarn, 2015, Ten species of Culicoides Latreille (Diptera: Ceratopogonidae) newly recorded from Thailand in Zootaxa 4033 (1), DOI: 10.11646/zootaxa.4033.1.2, http://zenodo.org/record/24009
Culicoides kinari Howarth 1985
No full textC. kinari Howarth 1985: 44 Material examined. Thailand, Trang, Tambon Ao Tong, LT near cowshed, 7.83065 °N, 99.33763 °E, 21.Mar. 2013, (1 female). Diagnosis. Female: The only species of the Gymnopterus group of C. subg. Haemophoructus with SCo on proximal flagellomeres. Distribution. Lao PDR, Thailand (new record).Published as part of Thepparat, Arunrat, Bellis, Glenn, Ketavan, Chitapa, Ruangsittichai, Jiraporn, Sumruayphol, Suchada & Apiwathnasorn, Chamnarn, 2015, Ten species of Culicoides Latreille (Diptera: Ceratopogonidae) newly recorded from Thailand in Zootaxa 4033 (1), DOI: 10.11646/zootaxa.4033.1.2, http://zenodo.org/record/24009
Three Kinds of Disambiguated Author ID Systems for PubMed 2019
No full textAuthor identifier (ID) is essential for many downstream tasks, such as co-author network and scientist mobility analysis. As a widely used bibliometrics database, author ID of PubMed is not officially provided by National Institutes of Health (NIH), that restrict bibliometric research. This study exploited three open bibliographic databases Aminer, Microsoft Academic Graph (MAG) and Semantic Scholar (S2) to associate author ID for PubMed. For this purpose, paper linking and author linking was performed sequencely to mine paper and author links between PubMed and these databases. Performance of author name disambiguation (AND) of there available identifiers was evaluated on two AND datasets. Our findings suggested that, S2 contains full volume of PubMed regarding link completeness. With respect to correctness of author ID, S2 and MAG achieved better performance than Aminer. The best F1 score on both dataset of there available identifiers is below 90\%, indicate that AND for large scale database remain as a difficult task and the need for further improvement. We made the final dataset that contains linked paper and author of PubMed publicly available for facilitating future research
Chrysozephyrus tytleri subsp. tytleri tytleri (Howarth 1957
No full text<p> 127. <i>Chrysozephyrus tytleri tytleri</i> (Howarth, 1957)</p> <p>Published records: Howarth, 1957: 249; Van Gasse, 2013; Varshney & Smetacek, 2015: 99.</p> <p>Remarks: Not recorded during the study.</p>Published as part of <i>Irungbam, Jatishwor Singh, Meitei, Laishram Ricky, Huidrom, Harmenn, Soibam, Baleshwor Singh, Ngangom, Aomao, Ngangom, Bendang, Meitei, Ronald & Fric, Zdenek Faltynek, 2020, An Inventory Of The Butterflies Of Manipur, India (Insecta: Lepidoptera), pp. 1-91 in Zootaxa 4882 (1)</i> on page 37, DOI: 10.11646/zootaxa.4882.1.1, <a href="http://zenodo.org/record/4296011">http://zenodo.org/record/4296011</a>
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