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Langton, D M, QX15812
No full textThis record was harvested from a previous catalogue system and will be withdrawn in 2025. Information in this record may be superseded or incomplete. Visit this record in UMA's new catalogue at: https://archives.library.unimelb.edu.au/nodes/view/398313Surname: LANGTON. Given Name(s) or Initials: D M. Military Service Number or Last Known Location: QX15812. Missing, Wounded and Prisoner of War Enquiry Card Index Number: 20208.215582
Item: [2016.0049.30606] "Langton, D M, QX15812
Chaetocladius parerai Moubayed & Langton 2019, sp. n.
No full textChaetocladius parerai sp. n.: dorsal part of inferior volsella (Figs 5 C, F) digitiform to long finger-like and distinctly projecting inwards, gonostylus (Fig. 5E) bearing a rounded expansion postero-apically which is hyaline and bare, differently shaped in C. guardiolei sp. n. Geographical distribution Chaetocladius berythensis sp. n. is known only from its type-locality in Lebanon (upper basin of the Beirut River, Western range, Mount Sannine). Chaetocladius callauensis sp. n., C. guardiolei sp. n. and C. parerai sp. n. are currently restricted to glacial springs, streams and peat bogs located in eastern Pyrenees. While C. guardiolei sp. n. is confined to the upper basin of the Tech River (1800- 2000 m), both C. callauensis sp. n. and C. parerai sp. n. occur in the upper basin of the Mantet River and Soques stream (alt. 2000-2300 m). Ecology The larvae of C. berythensis are rheophilic and exclusively confined to glacial karstic helocrenes with high water conductivity (Cd, up to 300 µS/ cm) and calcareous substratum. Emergence from June to early August. Associated species encountered in the same locality as the holotype include: Boreoheptagyia legeri (Goetghebuer, 1933); B. rotunda Serra-Tosio, 1983; Diamesa kasymovi Kownacki & Kownacka, 1973; D. sakartvella Kownacki & Kownacka, 1973; D. tonsa (Walker, 1856); Diamesa sp. A, near khumbugelida Willassen & Saether, 1987; Pseudodiamesa nivosa (Goetghebuer, 1928); Chaetocladius diai Moubayed-Breil, 2017; C. melaleucus; C. perennis (Meigen, 1830); C. piger (Goetghebuer, 1913); Eukiefferiella fittkaui Lehmann, 1972; E. minor (Edwards, 1929); Heleniella sp. A, near ornaticollis (Edwards, 1929); H. sp. B, near asiatica Reiss, 1968; Metriocnemus eurynotus (Holmgren, 1838); M. hirticollis (Staeger, 1839); Thienemanniella clavicornis (Kieffer, 1911). Larvae of C. callauensis, C. guardiolei. and C. parerai likely occur in glacial acidic helocrenes, streams and peat bogs located in Eastern Pyrenees (altitude 2000-2300 m), where water is crystalline with siliceous substratum and a very low conductivity (Cd, 10-13µS/cm). Emergence from June to September. Associated species encountered in the same localities as for holotypes include: Diamesa aberrata Lundbeck, 1898; D. bertrami Edwards, 1935; D. bohemani Goetghebuer, 1932; D. cinerella Meigen, 1835; D. modesta Serra-Tosio, 1968; D. thomasi Serra-Tosio, 1970; D. veletensis Serra-Tosio, 1971; Pseudodiamesa branickii (Nowicki, 1873); P. nivosa (Goetghebuer, 1928); Syndiamesa edwardsi Pagast, 1947; S. hygropetrica (Kieffer, 1909); Bryophaenocladius subvernalis (Edwards, 1929); Chaetocladius guisseti Moubayed-Breil, 2017; C. laminatus Brundin, 1947; C. mantetensis Moubayed-Breil; C. suecicus (Kieffer, 1916); H. ornaticollis (Edwards, 1929); Metriocnemus eurynotus; Parametriocnemus valescurensis Moubayed & Langton, 1999; Rheocricotopus pyrenaeus Moubayed-Breil, 2018; R. thomasi Moubayed-Breil, 2016; Thienemannia gracilis Kieffer, 1909; T. valespira Moubayed-Breil & Ashe, 2013; Trissocladius orsini Moubayed-Breil & Ashe; Micropsectra alyssae Moubayed-Breil & Ashe, 2018; M. ekremi Moubayed-Breil & Ashe, 2018; M. nohedensis (Moubayed & Langton, 1996). The four new Chaetocladius species appear to belong to the crenobiotic and crenophilous community of species as documented by Lindegaard (1995). Their occurrence in such preserved high mountain habitats highlights the importance of glacial springs and streams, which are considered to be microrefugia and hotspots of diversity and endemism. Like other rare members of the genus Chaetocladius occurring in high mountain glacial springs and streams (French, Italian and Swiss Alps; Eastern Pyrenees), only few individuals of C. berythensis sp. n. and C. callauensis sp. n. have been collected after extensive investigation. The melting period of snow has become much shorter over the three last decades, which has greatly affected the ecological conditions of the original habitats. Consequently, the loss of such biogeographically representative and relict species would be ecologically indicative of the global warming and climate change. Male pupal exuviae of taxa/species and morphotypes (Figs 6 A-L, 7A-N) Many specimens of 10 taxa/species including associated male pharate adults and male pupal exuviae of Chaetocladius s. str. were collected between 1996 and 2013 in some glacial mountain springs, peat bogs and streams located at high altitude (2000-2300 m) in the eastern Pyrenees (France) and High Tatra Mountains (Slovakia). Nearly 50 associated male adults and male pupal exuviae have been examined, which allow us to provide complementary short taxonomic notes on 10 taxa/ species and morphotypes, which are briefly illustrated and described based on characters found in the male pupal exuviae. The 10 taxa/species include 6 named species (C. melaleucus; C. dissipatus; C. perennis, C. guisseti, C. bitusiki, C. mantetensis) and 4 morphotypes, 3 of which could be pupae of the above described species (C. cf. laminatus; C. cf. callauensis sp. n.; C. cf. guardiolei sp. n.; C. cf. parerai sp. n.). Brief descriptions The male pupal exuviae are described on the basis of a combination of 6 distinguishing characters, which are briefly summarized as follows: 1. Frontal setae (FS) well-developed or vestigial; 2. Shape of thoracic horn (TH); 3. Distribution pattern of dorsocentral setae with mean distance between setae: Dc 1 -Dc 2 (d1); Dc 2 - Dc 3 (d2); Dc 3 -Dc 4 (d3); 4. Shape of dorsocentrals: type-a, thick setae; typeb, thin setae; type-c, bristle-like; 5. Oval postero-median patch of spines on sternites; 6. Shape of macrosetae (M) and location of the apical lobe (ApiL) on genital sac.Published as part of Moubayed, Joel & Langton, Peter H, 2019, CHAETOCLADIUS BERYTHENSIS SP. N., C. CALLAUENSIS SP. N., C. GUARDIOLEI SP. N. AND C. PARERAI SP. N., FOUR RELICT SPECIES INHABITING GLACIAL SPRINGS AND STREAMS IN EASTERN PYRENEES AND LEBANON (DIPTERA: CHIRONOMIDAE) Abstract, pp. 42-59 in CHIRONOMUS Journal of Chironomidae Research 32 (32) on pages 52-53, DOI: 10.5324/cjcr.v0i32.3000, http://zenodo.org/record/798736
Use of a coupled soil-root-leaf model to optimise phosphate fertiliser use efficiency in barley
No full textFiles used to compute the figures for the paper Heppell, J., Payvandi, S., Talboys, P., Zygalakis, K., Langton, D., Sylvester-Bradley, R., Edwards, A.C., Walker, R., Withers, P., Jones, D.L. and Roose, T. (2016) Use of a coupled soil-root-leaf model to optimise phosphate fertiliser use efficiency in barley. Plant and Soil, 1-29. (doi:10.1007/s11104-016-2883-4)</span
Adenotonsillectomy in children with mild symptoms: watchful waiting may deny children opportunity for development (letter)
No full textSimon C. Langton Hewer, Claire D. Langton Hewer, Yvonne Pamula, James Martin, Declan Kenned
Interview with George Langton
No full textSketches Leicester childhood playing football, earning money to go swimming or to the Colliseum cinema where piano and violin provided music. Describes work 'splitting stiffeners' at shoe factory. Outlines work progress from apprentice mechanic at Parr's Garage, then to HA Browett's garage, then Gartree Garage, then back to Parr's. Describes duties working with motor racing crew. Outlines work as maintenance engineer at Thomas & Edmunds. Describes working on vehicles for Ministry of Transport during Second World War (WWII), mentions leaving Sheffield on night of bombing. Explains how wanted more money and became service engineer at Frederick Parker's. Anecdotes about patrolling Beaumont Leys in Home Guard during WWII, fire watching. Mentions horses at Thomas & Edmunds, one of whom kicked incendiary bomb out of stable during Coventry blitz. Recalls Leicester bombing of November 1941 as 'eerie', fire watching, anecdote of men getting stuck on roof. Describes Victory in Europe party on Syston Street. Very brief mention of planes overhead on D-Day, brother buying watches from Americans, airfields being turned to farmland after war, American entertainers at Alconbury aerodrome, dance floor at Oriental. Recalls several shops on Charnwood Street
Alan R. H. Baker, John D. Hamshere, John Langton, Geographical Interpretations of Historical Sources. Readings in Historical Geography.
No full textNicolas-Obadia Georges. Alan R. H. Baker, John D. Hamshere, John Langton, Geographical Interpretations of Historical Sources. Readings in Historical Geography. . In: Études rurales, n°61, 1976. pp. 107-108
Tanytarsus heliomesonyctios Langton 1999
No full textTanytarsus heliomesonyctios Langton, 1999 Figures 1–4. Tanytarsus sp. Langton, 1992 (ecology, parthenogenesis, phenology). Tanytarsus heliomesonyctios Langton, 1999: 212, Fig. 1 b, d, f (female); Fig. 2 b, e, f (pupa). Tanytarsus heliomesonyctios Langton, 1999; GU 073186 – GU 073192 |Female, pupa, larva, Stur & Ekrem 2011: 32, Figs 27– 32. Tanytarsus heliomesonyctios Langton, 1999; AAC2863|Male, available from: http://www.boldsystems.org/index.php/Public_ RecordView?processid=CHRFI417-11 Tanytarsus heliomesonyctios Langton, 1999; Makarchenko et al., 2019, Figs 10–13. Material examined. 4 males, Russia, Magadan region, Monomtai Lake, 27–28.vii.2018, leg. Е. Hamenkova; 4 males, same data, 2.viii.2018, leg. Е. Hamenkova; 4 males, Republic of Sakha (Yakutia), Big Darpir Lake, 4.viii.2018, leg. Е. Hamenkova. Description. Adult male (n=3). Total length 3.6–4.7 mm; wing length 2.8–3.7 mm. Total length / wing length 1.17–1.61. Colouration. Ground colour of thorax, scutellum, maxillary palpomeres, haltere, legs and abdomen brown; antenna, scutal stripes and postnotum dark brown. Head. Frontal tubercles cone-shaped, 10–24 μm long and 7–17 μm wide. Temporal setae 16. Clypeus with 16–20 setae. Antenna with 13 flagellomeres, 1638–1701 μm long; ultimate flagellomere 1050–1071 μm. AR 1.67– 1.79. Maxillary palpomeres 2–4 combined 752–928 μm long, their individual lengths (in μm): 80–96: 216–248: 200–240: 256–344. Antenna length/palp length 1.81–2.18. Thorax. Acrostichals 4–10, dorsocentrals 8–14, prealars 2. Scutellum with 18 setae. Wing width 1.0– 1.05 mm. VR 0.94–1.18. R with 23–29, R 1 with 3–23, R 2+3 with 10–30, R 4+5 with 45–65, M 3+4 with 26–50, Cu 1 with 9 setae. VR 0.94–1.18. Brachiolum with 1 seta. Membrane covered with sparse macrotrichia in distal half. Legs (see Table 1). Spur of fore tibia straight, slightly curved apically 24–31 μm long. Combs of mid and hind tibiae separated; each comb bears straight or slightly curved spur, 27–31 μm (mid tibia) to 31–41 μm long (hind tibia). Basitarsus of mid leg with 2–5 sensilla chaetica. Hypopygium (Figs 1–4). Anal tergite with 2–3 median setae (rarely without setae) and great microtrichia-free area surrounding of base. Dark tergite bands separated medially, not reaching anal point crests. Lateral teeth and lateral setae absent. Anterior margin of tergite IX with small protrusions. The anal point is triangular shape with a wide base (85–102 μm long) and a narrower apical part (17 μm), armed with 10–12 spinulae placed in row between crests (102–133 μm long and height 7–10 μm in lateral view); microtrichia absent between crests; 16 lateral setae on each side of anal point. Gonocoxite 231–238 μm long, along the inner margin with 3–4 setae. The width of the transverse sternapodeme 119–126 µm. Phallapodeme 187–221 μm long. Superior volsella oval-shaped (65–85 μm long, 41–44 μm wide in dorsal view and 31 μm wide in lateral view), bearing 3–4 strong anteromedian and 6–8 fine dorsal setae, microtrichia absent. Digitus short (14 μm long and 7 μm wide). Stem of median volsella 78–92 μm long, bearing long simple and foliate setae that extend beyond the top of the inferior volsella. Inferior volsella 102–153 μm long, with 21–24 setae. Gonostylus straight 255–262 μm long and expanded in the proximal third (71–85 μm), tapering to widely rounded apex. HR 0.91. Remarks. Adult males of T. heliomesonyctios keys to the T. lugens species group due to the missing or poorly developed digitus, usually the lack of median tergite setae, a large microtrichia free area around the anal point base, and foliate lamellae with long tips on the median volsella (Ekrem 2003). Currently, the T. lugens species group includes six species, namely, T. bathophilus Kieffer, 1911, T. lugens (Kieffer, 1916), T. konishii Sasa & Kawai, 1985, T. latiforceps Edwards & Thienemann, 1941, T. trux Gilka & Paasivirta, 2007 and T. heliomesonyctios Langton, 1999 (Ekrem 2003, Gilka & Paasivirta 2007). Adult males of T. heliomesonyctios most similar with two species of T. lugens species group— T. bathophilus and T. lugens. Table 2 shows the main morphological features of males. Males of T. heliomesonyctios are distinguished by a large body size, a longer last antenna segment and maxillar palp, thoracic chetotaxy, the presence of medial setae on tergite IX (rarely medial setae are absent), the presence of poorly developed digitus and elongated median volsella (see Table 2). Distribution. Holarctic species. Previously known from Ellesmere Island in the Canadian high Arctic and the archipelagos Spitsbergen and Jan Mayen (Norway) as well as in Finnmark, northern Norway (males). For the first time noted the fauna of Russia. This is the second record of adult males.Published as part of Orel, Oksana V. & Semenchenko, Alexander A., 2019, Morphological description and DNA barcodes of adult males of Tanytarsus heliomesonyctios Langton, 1999 (Diptera, Chironomidae) in northeast of Russia, pp. 119-126 in Zootaxa 4686 (1) on pages 121-122, DOI: 10.11646/zootaxa.4686.1.6, http://zenodo.org/record/348439
Chaetocladius guardiolei Moubayed & Langton 2019, sp. n.
No full text<i>Chaetocladius guardiolei</i> sp. n. <p> <i>http://zoobank.org/ 1792C721-E5BC-464D-AAA1- 70637DA544E1</i></p> <p> <b>Material examined.</b> Holotype. 1 male adult, France, eastern Pyrenees, Prats-De-Mollo Nature Reserve, upper basin of the Tech River, altitude 1800-2000 m a.s.l., 05.VI.2000, leg. J. Moubayed. Water siliceous, conductivity 40-50 µS/cm; pH 5.3-5.5; temperature 6-12 °C.</p> <p>Paratypes. 1 male adult, as holotype except upper basin of Mantet River, Callau glacial springs and peat bogs, 05.08.2008; 2 tentatively associated male pupal exuviae, same locality and date as for holotype.</p> <p>Holotype (male adult, on 1 slide) is deposited in the collections of the National Museum of Ireland, Kildare Street, Dublin 2, Ireland. The paratypes is deposited in the collection of the senior author.</p> <p> <b>Etymology.</b> The new species is named ‘ <i>guardiolei</i> ’ in honour to Olivier Guardiole, who is still active as an ‘Assistant-Curator’ at Prats-De-Mollo Nature Reserve (Eastern Pyrenees) in contributing to preserving the aquatic environment and species confined to the preserved area.</p> <p> <b>Diagnostic characters</b></p> <p> Based on the shape of the inferior volsella <i>C. guardiolei</i> sp. n. appears to key close to the following species: <i>C</i>. <i>suecicus</i> (Kieffer, 1916), <i>C</i>. <i>longivirgatus</i> Stur & Spies, 2011 and <i>C</i>. <i>subalpinus</i> Rossaro, Magoga & Montagna, 2017. However, this new species can be distinguished from related members of Chaetocladius species in having: clypeus circular; lobes of antepronotum well gaping, distinctly thicker medially; humeral pit ellipsoidal, bearing contrasting brownish granulation; tergite IX with a rounded dorsal hump; anal point triangular and sharply pointed apically, basal part cup-shaped with well-sclerotized lateral margin; virga well-developed, consisting of several long fine spines; inferior volsella well-developed, composed of 2 contrasting parts including a long finger-like expansion and a semi-circular small pouch-like lobe; gonostylus slender and thinner proximally, becoming bulbous distally; crista dorsalis absent; megaseta well-developed.</p> <p> <b>Description</b></p> <p> <b>Male adult</b></p> <p>(n = 2; Figs 4 A-J)</p> <p>Large. Total length 4.00- 4.10 mm. Wing length 2.35-2.45 mm; TL/WL 1.70. General colouration dark brown to blackish. Head and antenna dark brown; thorax contrasting dark brown to blackish, mesonotal stripes blackish; humeral pit brownish with contrasting dark spots; legs dark brown; membrane of wing pale brown, veins and squamal area dark brown; tergites I-VIII brownish, anal segment dark brown.</p> <p> Head. Eyes bare between ommatidia; temporals of 10 inner verticals, outer verticals absent; palpomere 3 (Fig. 4A) with 4 sensilla clavata and 4 sensilla coeloconica; clypeus (Fig. 4B) nearly circular, with 7 setae in 3 rows. Antenna 1000 µm long; last flagellomere 560 µm long, slightly clubbed distally, narrowing apically with numerous curved sensilla chaetica, pre-apical seta absent; antennal groove beginning on segment 3 and reaching ultimate flagellomere; AR 1.27. Thorax. Anteprontum (Fig. 4C) well-developed, lobes distinctly gaping and wider medially, with 6 lateral antepronotals; acrostichals 23-25 in 1-2 rows; dorsocentrals 14- 15 in 1-2 rows; prealars 6 in 1 row; humeral pit (Figs 4 D-E) ellipsoid, with contrasting dark spots. Wing. Brachiolum with 1 seta; membrane densely covered with coarse punctuation; number of setae on veins: R, 12; R 1, 1; remaining veins bare; squama with 9 setae in 1 row. Legs. Tarsomeres ta 4 and ta 5 of PII sub-equal; sensilla chaetica present on: tibia and tarsomeres ta 1 -ta 5 of PI, tibia and tarsomeres ta 1 -ta 4 of PII-PIII.</p> <p>Hypopygium. Tergite IX and anal point (dorsal) with sternapodeme and phallapodeme as in Fig. 4F; tergite IX broadly trapezoidal, wider at base with rectangular distal half; 16-18 dorsal setae including 10-11 located laterally on each side of the base of anal point and 6-7 close to the base of anal point; dorsal hump semi-circular, clearly visible in lateral view (Fig. 4G). Anal point in dorsal (Fig. 4F) and lateral view (Fig. 4G) 85 µm long, 40-45 µm maximum width at base, cup-shaped at base, distal half triangular and sharply pointed apically, lateral margin of basal part well-sclerotized, distal part (about 35 µm long) bare and hyaline; 6-7 setae present on both dorsal and lateral sides. Latero-sternite IX with 10-11 setae inserted laterally (5-6 on each side). Sternapodeme and phallapodeme (Fig. 4F), phallapodeme distinctly wider anteriorly. Virga (Figs 4F, I) well-developed, consists of 6-7 long spines about 30-40 µm long. Gonocoxite swollen basally and rounded apically; ventral margin bearing a weakly elongated lobe and 10 stout setae. Inferior volsella (Fig. 4H) well-developed, composed of a triangular lobe which ends in a finger-like hyaline and bare expansion; distal lobe small pouch-like, densely covered with setae. Gonostylus in dorsolateral view as in Fig. 4J, slender, thinner proximally, becoming bulbous and thicker in its distal half, posterior margin distinctly rounded; anteriorly with 2-3 rows of setae; crista dorsalis absent; megaseta about 18 µm long, well-developed.</p>Published as part of <i>Moubayed, Joel & Langton, Peter H, 2019, CHAETOCLADIUS BERYTHENSIS SP. N., C. CALLAUENSIS SP. N., C. GUARDIOLEI SP. N. AND C. PARERAI SP. N., FOUR RELICT SPECIES INHABITING GLACIAL SPRINGS AND STREAMS IN EASTERN PYRENEES AND LEBANON (DIPTERA: CHIRONOMIDAE) Abstract, pp. 42-59 in CHIRONOMUS Journal of Chironomidae Research 32 (32)</i> on pages 47-49, DOI: 10.5324/cjcr.v0i32.3000, <a href="http://zenodo.org/record/7987367">http://zenodo.org/record/7987367</a>
Chaetocladius callauensis Moubayed & Langton 2019, sp. n.
No full text<i>Chaetocladius callauensis</i> sp. n. <p> <i>http://zoobank.org/ 8A3665D5-6D2A-461E-AC81- AC15EFAA376C</i></p> <p> <b>Material examined.</b> Holotype. 1 male adult, France, eastern Pyrenees, Mantet Nature Reserve, upper basin of the River Mantet, Ressec glacial stream, Callau acid helocrenes springs and peat bogs, 42° 28’ 38’’ N, 02° 18’ 26’’ E, altitude 2000- 2300 m a.s.l., 05.VIII.2010, leg. J. Moubayed. Water crystalline, conductivity 30-40 µS/cm, pH 5.5- 5.7; temperature 8-10 °C, during summer, about 3-5 °C in winter and spring.</p> <p>Paratypes. 3 tentatively associated pupal exuviae (2 males and 1 female), same locality and date as for holotype; 1 male adult, 2 tentatively associated male pupal exuviae, Font des Soques glacial spring and stream at Mantet Nature Reserve. 1 male adult and 1 male pharate adult, alt. 2000- 2100 m, 05.08.2010, leg. J. Moubayed-Breil. Water crystalline, conductivity 20-30 µS/cm, pH 5.5- 5.7; temperature 8-10 °C during summer period.</p> <p>Holotype (male adult mounted on 1 slide) is deposited in the collections of the National Museum of Ireland, Kildare Street, Dublin 2, Ireland. Paratypes are deposited in the senior author’s collection.</p> <p> <b>Etymology.</b> The new species is named ‘ <i>callauensis</i> ’ after the protected glacial helocrene springs and peat bogs area of Mantet Nature Reserve, which is located at high altitude (2000-2300 m) in the Eastern Pyrenees (SW-France) where the type material was collected.</p> <p> <b>Diagnostic characters</b></p> <p> Based on the atypical shape of the inferior volsella <i>C. callauensis</i> sp. n. appears to belong to a separate group within the genus <i>Chaetocladius</i>. However, this new species is also distinguished from other known <i>Chaetocladius</i> species in having: semi-circular clypeus with 2 distal margins; lobes of antepronotum not gaping, distinctly thinner and parallel-sided medially; humeral pit ellipsoidal, surrounded by dense contrasting brownish granulation; tergite IX without dorsal hump; virga weakly-developed, consisting of 2 sinuous fine spines; gonocoxite rounded apically, ventral margin with 2 broad lobes; inferior volsella composed of 2 sub-equal parts, proximal one rectangular, consisting of a contrasting smooth lobe which is hyaline and bare, distal one rounded and densely covered with setae; gonostylus slender, thinner proximally, bulbous and thicker in its distal half, posterior margin rounded; crista dorsalis wide, lower proximally, becoming higher and more conspicuous close to the megaseta.</p> <p> <b>Description</b></p> <p> <b>Male adult</b></p> <p>(n = 3; Figs 2 D-G, 3A-G)</p> <p>Large. Total length 3.90-4.00 mm. Wing length 2.70-2.75 mm; TL/WL 1.07. General colouration brown to dark brown. Head and antennae brown; thorax contrasting brown to dark brown, mesonotal stripes distinctly dark brown, humeral pit brownish with contrasting granulation; wing pale; legs brown; tergites I-VIII brownish, anal segment brown to dark brown.</p> <p> Head. Eyes bare between ommatidia, hairs absent on inner lateral eye margin, a few short setae present on outer posterior margin. Temporals consist of 11 setae including 9 inner and 2 outer verticals; palpomere 3 (Fig. 2D) with 3 sensilla clavata and 4 sensilla coeloconica; clypeus (Fig. 2E) 115 µm long, and 210 µm maximum width, semi-circular, bearing 18 setae in 4-5 rows. Antenna 1100 µm long; last flagellomere 565 µm long, clubbed distally, covered with a dense brush of curved sensilla chaetica apically, pre-apical seta absent; antennal groove beginning on segment 2 and reaching ultimate flagellomere; AR 1.06. Thorax. Anteprontum (Fig. 2F), lobes weakly-developed at base and not gaping, distinctly thinner and parallel-sided medially, with 6 lateral antepronotals; acrostichals 16- 17; dorsocentrals 12-13; prealars 4-5; humeral pit (Fig. 2G) ellipsoid, surrounded by dense contrasting granulation. Wing. Brachiolum with 1 seta; membrane densely covered with coarse punctuation; number of setae on veins: R, 7; R 1, 10; remaining veins bare; squama with 19-23 setae in 1 row. Legs. Tibial spur of PI spiniform. Length (µm) of tibial spurs of: PI, 65; PII, 35 and 20; PIII, 70 and 30; longest seta of tibial comb 50 µm long. Sensilla chaetica few (proximally and distally) on tibia and tarsomeres ta 1 -ta 5 of PI-PIII. Length (µm) and proportions of prothoracic (PI), mesothoracic (PII) and metathoracic (PIII) legs as in Table 2.</p> <p> Hypopygium as in dorsal (Fig. 3A) and lateral view (Fig. 3F), ventral view with tergite IX and anal point omitted as in Fig. 3 B. Tergite IX broadly semi-circular, wider at base and narrowing posteriorly up to its 1/4 th distal part; dorsal setae 26-28 include 10-12 located above the base of anal point and 14-16 close to the posterior margin (located in in 2 curved rows and placed on each side of the base of anal point); dorsal hump absent (Fig. 3G). Anal point in dorsal (Figs 3A, C) and lateral view (Fig. 3G) 75 µm long, about 135 µm maximum width at base, markedly wider at base, parallel-sided in its distal part and rounded apically, bare and hyaline part about 25 µm long; 8-9 setae are present both dorsally and laterally. Latero-sternite IX with 11 setae inserted laterally (5-6 on each side). Sternapodeme and phallapodeme (Fig. 3B), phallapodeme distinctly wider anteriorly. Virga (Fig. 3A) weakly-developed, consists of 2 sinuous spines about 25 µm long. Gonocoxite (Figs 3 A-B, F) 300-330 µm long and 125 µm maximum width, rounded apically, ventral margin bi-lobed, with 10 stout setae; inferior volsella in dorsal (Fig. 3A) and lateral view (Fig. 3F) well-developed, composed of 2 sub-equal lobes, proximal one rectangular and contrasting, smooth on its inner part which is hyaline and bare, distal lobe densely covered with short setae. Gonostylus at acute angle (Fig. 3D) and at right angle (Fig. 3E) 155 µm long and 40 µm maximum width, slender, thinner proximally, becoming bulbous and thicker in its distal half, posterior margin rounded; megaseta about 12 µm long; crista dorsalis extending from proximal part of gonostylus to the megaseta, a wide lobe proximally, becoming higher and more conspicuous in its distal half close to the megaseta.</p>Published as part of <i>Moubayed, Joel & Langton, Peter H, 2019, CHAETOCLADIUS BERYTHENSIS SP. N., C. CALLAUENSIS SP. N., C. GUARDIOLEI SP. N. AND C. PARERAI SP. N., FOUR RELICT SPECIES INHABITING GLACIAL SPRINGS AND STREAMS IN EASTERN PYRENEES AND LEBANON (DIPTERA: CHIRONOMIDAE) Abstract, pp. 42-59 in CHIRONOMUS Journal of Chironomidae Research 32 (32)</i> on pages 44-47, DOI: 10.5324/cjcr.v0i32.3000, <a href="http://zenodo.org/record/7987367">http://zenodo.org/record/7987367</a>
MeSH term explosion and author rank improve expert recommendations
Full text linkInformation overload is an often-cited phenomenon that reduces the productivity, efficiency and efficacy of scientists. One challenge for scientists is to find appropriate collaborators in their research. The literature describes various solutions to the problem of expertise location, but most current approaches do not appear to be very suitable for expert recommendations in biomedical research. In this study, we present the development and initial evaluation of a vector space model-based algorithm to calculate researcher similarity using four inputs: 1) MeSH terms of publications; 2) MeSH terms and author rank; 3) exploded MeSH terms; and 4) exploded MeSH terms and author rank. We developed and evaluated the algorithm using a data set of 17,525 authors and their 22,542 papers. On average, our algorithms correctly predicted 2.5 of the top 5/10 coauthors of individual scientists. Exploded MeSH and author rank outperformed all other algorithms in accuracy, followed closely by MeSH and author rank. Our results show that the accuracy of MeSH term-based matching can be enhanced with other metadata such as author rank
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