462 research outputs found
A star-forming galaxy at z= 5.78 in the Chandra Deep Field South
Get PDFWe report the discovery of a luminous z = 5.78 star-forming galaxy in the Chandra Deep Field South. This galaxy was selected as an ‘i-drop’ from the GOODS public survey imaging with the Hubble Space Telescope/Advanced Camera for Surveys (object 3 in the work of Stanway, Bunker & McMahon 2003). The large colour of (i′−z′)AB = 1.6 indicated a spectral break consistent with the Lyman α forest absorption shortward of Lyman α at z≈ 6. The galaxy is very compact (marginally resolved with ACS with a half-light radius of 0.08 arcsec, so rhl 5. Our spectroscopic redshift for this object confirms the validity of the i′-drop technique of Stanway et al. to select star-forming galaxies atz≈ 6
Radio sources in the Chandra Galactic Bulge Survey
Get PDFWe discuss radio sources in the Chandra Galactic Bulge Survey region. By cross-matching the X-ray sources in this field with the NRAO VLA Sky Survey archival data, we find 12 candidate matches. We present a classification scheme for radio/X-ray matches in surveys taken in or near the Galactic plane, taking into account other multiwavelength data. We show that none of the matches found here is likely to be due to coronal activity from normal stars because the radio to X-ray flux ratios are systematically too high. We show that one of the source could be a radio pulsar, and that one could be a planetary nebula, but that the bulk of the sources are likely to be background active galactic nuclei (AGN), with many confirmed through a variety of approaches. Several of the AGN are bright enough in the near-infrared (and presumably in the optical) to use as probes of the interstellar medium in the inner Galaxy
Chandra observations of the planetary nebula IC 4593
No full textThe Advanced CCD Imaging Spectrometer (ACIS-S) camera on board the Chandra X-ray Observatory has been used to discover a hot bubble in the planetary nebula (PN) IC 4593, the most distant PN detected by Chandra so far. The data are used to study the distribution of the X-ray-emitting gas in IC 4593 and to estimate its physical properties. The hot bubble has a radius of similar to 2 arcsec and is found to be confined inside the optically bright innermost cavity of IC 4593. The X-ray emission is mostly consistent with that of an optically thin plasma with temperature kT approximate to 0.15 keV (or T-X approximate to 1.7 x 10(6) K), electron density n(e) approximate to 15 cm(-3) , and intrinsic X-ray luminosity in the 0.3-1.5 keV energy range L-X = 3.4 x 10(30) erg s(-1). A careful analysis of the distribution of hard (E >0.8 keV) photons in IC4593 suggests the presence of X-ray emission from a point source likely associated with its central star (CSPN). If this was the case, its estimated X-ray luminosity would be L-X,(CSPN) = 7 x 10(29) erg s(-1), fulfilling the log(L-X, (CSPN)/L-bol) approximate to -7 relation for self-shocking winds in hot stars. The X-ray detection of the CSPN helps explain the presence of high-ionization species detected in the ultraviolet spectra as predicted by stellar atmosphere models. © 2020 The Author(s).JAT and MAG are supported by the Universidad Nacional Autonoma de Mexico (UNAM) Direccion General de Asuntos del Personal Academico (DGAPA) PAPIIT projects IA100318 and IA100720. MAG acknowledges support from grant PGC2018102184-B-I00, co-funded with FEDER funds. LB and YHC acknowledge support from NASA grant Chandra GO2-13024B. YHC acknowledges the research grant 108-2112-M-001-045 from the Ministry of Science and Technology (MOST) of Taiwan. This work has made extensive use of the NASA's Astrophysics Data System. Based on observations made with the NASA/ESA Hubble Space Telescope, and obtained from the Hubble Legacy Archive, which is a collaboration between the Space Telescope Science Institute (STScI/NASA), the Space Telescope European Coordinating Facility (ST-ECF/ESA) and the Canadian Astronomy Data Centre (CADC/NRC/CSA)
Scientometric Portrait of Nobel Laureate S. Chandrasekhar
Get PDFScientometric analysis of the publications productivity of Nobel Laureate S. Chandrasekhar is documented
Odontotrypes (Odontotrupes) tawangensis Gupta, Chandra & Hillert, 2016, new species
No full text<i>Odontotrypes</i> (<i>Odontotrupes</i>) <i>tawangensis</i> new species <p>(Figs. 1–19)</p> <p> <b>Type locality.</b> India, Arunachal Pradesh state, Tawang district.</p> <p> <b>Type material.</b> 18 specimens: holotype male labeled: “ India, Arunachal Pradesh state, Tawang district / Sela / 27.523491N, 92.106493E / 5.x.2010 / collected K. Chandra ” in ZSCI [ZSI Registration Number: 21489/H4A]. Allotype female labeled: “NE INDIA W, ARUNACHAL PR / TAWANG Monastery vicinity / 27°35´30´´N 91°51´E; 2700–3000 m / 19.-27.v. 2004 ” in SJCP. Paratypes: “ India, Arunachal Pradesh state / Tawang district / Sela 27.523491N, 92.106493E / 5.x.2010 / collected K. Chandra ” 1 male in ZSCI [ZSI Registration Number: 21490/H4A]; “NE INDIA W, ARUNACHAL PR / TAWANG Monastery vicinity / 27°35´30´´N 91°51´E; 2700– 3000 m / 19.-27.v. 2004 ” 1 male in DKCP, 1 male and 1 female in JSCP, 6 males and 4 females in SJCP, 1 male and 1 female in OHCB.</p> <p> <b>Description of holotype</b> (Fig. 1). Length 20.0 mm, maximum width 9.7 mm, oblong and convex. Dorsally black; vertex and elytra at base with metallic luster; ventral surface black with cuprous tinge especially on mesofemora, metafemora, and anterior part of pronotum.</p> <p>Head (Figs. 2, 4): Labrum truncate anteriorly. Anterior clypeal margin broadly arcuate, clypeal disc distinctly elevated in middle, clypeal surface slightly rugopunctate near lateral margins, elevated areas smooth; area around frontoclypeal junction distinctly depressed, T-shaped, suture distinct. Median suture on vertex indistinct; eye tubercle blunt and distinctly prominent dorsally, in lateral view angular; eye canthus smooth.</p> <p>Pronotum (Figs. 3, 5): Transverse, broadest just posteriad of middle; completely bordered (finely at base); lateral margins rounded, not crenulate; anterior marginal carina moderately elevated and widened in middle. Anterior angles blunt, broadly rounded, sides almost straight in anterior third forming a rounded lateral angle; posterior angles bent 45°. Surface completely smooth in middle with few scattered punctures; anterior concavity reduced, simple depression; lateral fovea small with rugopunctation; surface near lateral margins rugopunctate anteriorly and posteriorly.</p> <p>Scutellum (Fig. 7): Pentagonal, basal margin not bordered, slightly declined inward, surface entirely smooth, yellow border present at each side from meeting point to base.</p> <p>Elytra (Fig. 6): Humeral umbone weakly prominent; base almost equal in length to pronotum, neither margined nor carinate; surface glabrous. Surface with 7 distinct striae clearly indicated between suture and humeral umbone, which gradually disappear towards apex; intervals 3–7 convex and impunctate; lateral side with a continuous carina from humeral umbone to apex.</p> <p>Legs (Figs. 8–9): Profemora black, not shiny, completely smooth; mesofemora and metafemora shiny with 2 rows of setose punctures. Protibiae laterally with 5 teeth including 4 distinct anterior teeth, and 1 weak basal tooth (Fig. 8); on ventral side medially with 7 teeth including 3 anterior, sharp, distinct teeth and 4 blunt, reduced teeth (Fig 9).</p> <p>Macropterous (Fig. 10).</p> <p>Abdominal ventrites shiny, serrate punctate.</p> <p>Aedeagus as in Figs. 11–13 (holotype) and 16–17 (paratypes: India, Arunachal Pradesh, Tawang Monastery vicinity, in DKCP).</p> <p>Measurements (mm): Median length of head (excluding labrum and mandibles) 3.1, distance between frontal tubercles 2.9, anterior margin of clypeus (circumference) 4.1, median length of pronotum (dorsal) 5.3, maximum width 9.6, median length of scutellum 1.3, maximum width 1.7, sutural length of elytra (dorsal) 9.2, maximum width combined 9.7, aedeagus (length) 3.7.</p> <p> <b>Variation</b>. Length 17.0–20.0 mm, width 8.5–9.7 mm. The female differs from male by the less developed clypeal tubercle and the weaker protibial teeth.</p> <p> <b>Distribution</b>. Only known from type locality: Sela, Tawang, Arunachal Pradesh, India (Fig. 15).</p> <p> <b>Etymology.</b> The name <i>tawangensis</i> refers to the type locality of this species, the Tawang district of the state of Arunachal Pradesh.</p> <p> <b>Differential diagnosis.</b> <i>Odontotrypes</i> (<i>Odontotrupes</i>) <i>tawangensis</i> new species is distinguished from the closely related species <i>O</i>. (<i>O</i>.) <i>orichalceus</i> (reported from the Tibetan Plateau of Sikkim) by the unique structure of the aedeagus (Figs. 11–13, 16–17) (right paramere with distinct internal truncate appendix situated subapically and directed inward) and the structure of the elytra (elytral striae are distinct basally, becoming more shallowly apically), and the well-developed metathoracic wings. Based on the keys given by Král <i>et al.</i> (2001) <i>Odontotrypes</i> (<i>O.</i>) <i>tawangensis</i> should be classified in the subgenus <i>Odontotrupes</i>. Species of this subgenus that are distributed in Bhutan and India characteristically have slightly reduced or normal-sized metathoracic wings, namely <i>O.</i> (<i>O.</i>) <i>bhutan</i>, <i>O.</i> (<i>O.</i>) <i>gogona</i>, <i>O.</i> (<i>O.</i>) <i>orichalceus</i>, and <i>O.</i> (<i>O.</i>) <i>tawangensis</i>. According to Král <i>et al.</i> (2001) the distribution ranges of <i>Odontotrypes</i> are relatively small, many of them being endemic to single mountain systems, separated by deep river valleys.</p> <p>The authors wish to thank the director of the Zoological Survey of India, for providing them with the necessary facilities and for his encouragements. The first author is thankful to Paul Schoolmeesters (Belgium) for literature, Baiju Lal (former Officer-in-Charge, Coleoptera Section, Zoological Survey of India), Amitava Mujumder, and Joyjit Ghosh. We also thank Marc Miquel (Queen Mary University of London, United Kingdom) for editing our English text and review the earlier version of manuscript and Stanley Jákl, David Král, and Jan Schneider for access to the specimens examined.</p>Published as part of <i>Gupta, Devanshu, Chandra, Kailash & Hillert, Oliver, 2016, Odontotrypes (Odontotrupes) tawangensis new species (Coleoptera: Geotrupidae) from Arunachal Pradesh, India, pp. 559-566 in Zootaxa 4154 (5)</i> on pages 560-565, DOI: 10.11646/zootaxa.4154.5.4, <a href="http://zenodo.org/record/264799">http://zenodo.org/record/264799</a>
Informetrics on M. N. Srinivas
Get PDFM. N. Srinivas, the well known sociologist is widely recognised as architect of modern Indian sociology and social anthropology. His publications have been analysed by year, domain, authorship pattern, channels of communication used. Keywords, etc. The results indicate that the papers published by him are of a nature that qualify him to be a 'role model' for the younger generations to emulate.
By the end of 1995, Srinivas had to his credit 144 papers which, included 33 broad papers in sociology and anthropology; 18 papers in social change; 28 papers in village studies; 12 papers on religion; 17 papers on caste and 36 papers of general popular interest. The periods 1958-61 and 1974-77, when Srinivas was 38-41 and 58-61 years old. were his most productive periods with highest publication activity
Bibliographics for the 983 eprints in the live archives of E-LIS : trends and status report up to 7th July 2004, based on author-self-archiving metadata
Get PDFThe priority for ideas and philosophy related to "Network Theory" have been traced back and documented by Braun(2004),and credit goes to Karinthy(1929).The IT has empowered to realise it, as the most practical phenomena and it is no more a humour. The OAI (Open Archives Initiatives)and ACIS (Academic Contributor Information System)are progressive in the direction ,which may lead to realise the "Collective Genius" at global level. Focus of present study is on Author-Self-Archiving (A-S-A)Metadata of the 983 Eprints in the Live Archives of the E-LIS (EPrints of Library and Information Science),which were approved till 7th July 2004.The A-S-A Metadata was used for librametric analysis. Self-explanatory bibliographics are illustrated.The highlights include: Conference papers (34%); highest approval, June 2004 (28%); published archives (76%);not refereed (52%); not in public domain (60%); highest self-archiving-author (De Robbio, Antonella).The Nos. of EPrints having single JITA domain specifications were: Theoretical and general aspects of libraries and information(27); Information use and sociology of information(80);Users,literacy and reading(13);Libraries as physical collections(30);Publishing and legal issues(57);Management(13);Industry, profession and education(36);Information sources, supports, channels(113) ; Information treatment for information services, Information functions and techniques (101); Technical services libraries, archives and museums(25); Housing technologies(1); Information technology and library technology(92); and Inter-domainery (395) i.e. having specifications of two or more than two JITA classes
Multi-scale Radio and X-Ray Structure of the High-redshift Quasar PMN J0909+0354
No full textThe high-redshift quasar PMN J0909+0354 (z = 3.288) is known to have a parsec-scale compact jet structure, based on global 5 GHz very long baseline interferometry (VLBI) observations performed in 1992. Its kiloparsec-scale structure was studied with the Karl G. Jansky Very Large Array (VLA) in the radio and the Chandra space telescope in X-rays. Apart from the north-northwestern jet component seen in both the VLA and Chandra images at 2.″3 separation from the core, there is another X-ray feature at 6.″48 in the northeastern (NE) direction. To uncover more details and possible structural changes in the inner jet, we conducted new observations at 5 GHz using the European VLBI Network in 2019. These data confirm the northward direction of the one-sided inner jet already suspected from the 1992 observations. A compact core and multiple jet components were identified that can be traced up to ∼0.25 kpc projected distance toward the north, where the structure becomes more and more diffuse. A comparison with arcsecond-resolution imaging with the VLA shows that the radio jet bends by ∼30 between the two scales. The direction of the parsec-scale jet as well as the faint optical counterpart found for the newly detected X-ray point source (NE) favors the nature of the latter as being a background or foreground object in the field of view. However, the extended (∼160 kpc) emission around the positions of the quasar core and NE detected by the Wide-field Infrared Survey Explorer in the mid-infrared might suggest a physical interaction of the two objects. Accepted Author ManuscriptsAstrodynamics & Space Mission
The X-ray source population of the globular cluster M15: Chandra high-resolution imaging
No full textThis is the author accepted manuscript. The final version is available from the publisher via the DOI in this record.The globular cluster M15 was observed on three occasions with the High Resolution Camera on-board Chandra in 2001 in order to investigate the X-ray source population in the cluster centre. After subtraction of the two bright central sources, four faint sources were identified within 50 arcsec of the core. One of these sources is probably the planetary nebula K648, making this the first positive detection of X-rays from a planetary nebula inside a globular cluster. Another two are identified with UV variables (one previously known), which we suggest are cataclysmic variables (CVs). The nature of the fourth source is more difficult to ascertain, and we discuss whether it is possibly a quiescent soft X-ray transient or also a CV.DCH is grateful to the Academy of Finland and to PPARC for financial support. MBD gratefully acknowledges the support of a Swedish Royal Academy of Sciences (KVA) Research Fellowship. The authors thank Craig Heinke, Bruce Balick and Joel Kastner for valuable comments. The authors also wish to thank Jonathan C. McDowell for useful suggestions, Miriam Krauss at the Chandra HelpDesk, and the anonymous referee for useful comments. DCH is grateful to Panu Muhli for useful comments. This research has made use of NASA's Astrophysics Data System, SAOImage DS9, developed by Smithsonian Astrophysical Observatory, and of the SIMBAD database operated at CDS, Strasbourg, France. Part of this work was based on observations made with the NASA/ESA Hubble Space Telescope, obtained from the Data Archive at the Space Telescope Science Institute, which is operated by the Association of Universities for Research in Astronomy, Inc., under NASA contract NAS 5-26555
Mesovelia easaci Chandra 2017, sp. nov.
No full text<i>Mesovelia easaci</i> sp. nov. <p>(Figs. 1A–M)</p> <p> <b>Material examined. Holotype</b> (apterous male): <b>INDIA</b>, MEGHALAYA, <b>West Garo Hills District,</b> Dalu Village, Sacred Heart Church, Pond, 29 m, 25 <i>°</i> 12’44.73” N, 90 <i>°</i> 13’21.29” E, 10.vi.2016, Coll. E.E. Jehamalar. <b>Paratypes. East Khasi Hills District,</b> 5 mac-da ♂ (= macropterous form with membrane loss), 2 mac-da ♀, Mawlaitshong Village, Pond, 990 m, 25 <i>°</i> 14’53.8” N, 91 <i>°</i> 33’43.5” E, 4.iii.2016; 1 mac-da ♀, Sadew Village, Pond, 1725 m, 25 <i>°</i> 31’12” N, 91 <i>°</i> 48’4.4” E, 7.iii.2016; 1 mac. ♂, Mawsynram Stream, 1392 m, 25 <i>°</i> 17’51.1” N, 91 <i>°</i> 34’38.9” E, 4.iii.2016; 1 mac. ♂, 1 nymph, Shillong, Ward’s Lake, 1475 m, 25 <i>°</i> 34’31” N, 91 <i>°</i> 53’13.9” E, 24.ii.2016; 1 mac-da ♀, Mawsynram, Wahmawiong Stream, 1340 m, 25 <i>°</i> 18’3.5” N, 91 <i>°</i> 35’16.6” E, 4.iii.2016; 1 mac-da ♀, Cement Village, Mopum Stream, 968 m, 25 <i>°</i> 20’35.7” N, 92 <i>°</i> 28’24.3” E, 12.iii.2016; 1 mac. ♂, 1 mac-da ♀, Sohrarim Village, Wahshari Stream, 1563 m, 25 <i>°</i> 18’28.7” N, 91 <i>°</i> 43’39.4” E, 3.iii.2016; 2 mac. ♂, 13 mac. ♀, Mawkynrew, Waiong Stream, 1489 m, 25 <i>°</i> 25’29.6” N, 92 <i>°</i> 0’22.3” E, 28.ii.2016; 1 mac-da ♂, 1 mac. ♀, Ksehpongdeng Village, Umbot Stream, 1228 m, 25 <i>°</i> 33’35.1” N, 92 <i>°</i> 2’11.4” E, 5.iii.2016; 1 mac. ♀, Kyrdemkhla, 1806 m, 25 <i>°</i> 26’25.1” N, 91 <i>°</i> 49’38.2” E, 1.iii.2016; 1 mac. ♂, 1 mac-da ♂, 2 apt. ♀, Shella Bazar, Shella River, 23 m, 25 <i>°</i> 10’51.4” N, 91 <i>°</i> 38’7.2” E, 6.iii.2016; 1 mac. ♂, 1 mac. ♀, Dommon Village, Pond, 16 m, 25 <i>°</i> 9’9.9” N, 91 <i>°</i> 41’9.4” E, 6.iii.2016; 4 mac. ♂, 1 mac-da ♂, 3 mac. ♀, Liniong Village, Stream, 1675 m, 25 <i>°</i> 25’1.1” N, 91 <i>°</i> 42’27.9” E, 7.iii.2016; 1 mac. ♂, Mylliem Village, Umtyngar River, 1679 m, 25 <i>°</i> 27’58.9” N, 91 <i>°</i> 49’39.1” E, 1.iii.2016; <b>East Jaintia Hills District,</b> 1 mac. ♂, 2 mac. ♀, Pynthor Sale, 1197 m, 25 <i>°</i> 22’9.5” N, 92 <i>°</i> 19’50.4” E, 10.iii.2016; 2 mac. ♂, 8 mac-da ♂, 3 mac. ♀, 8 mac-da ♀, Tuber Village, Pond, 1357 m, 25 <i>°</i> 26’24.6” N, 92 <i>°</i> 17’33” E, 10.iii.2016; 1 mac-da ♂, 2 mac-da ♀, Narpuh WLS, Umkiang Village, Wah Apha Stream, 19 m, 25 <i>°</i> 4’11.9” N, 92 <i>°</i> 22’42.6” E, 11.iii.2016; <b>West Jaintia Hills District,</b> 2 mac. ♂, Myngngor Village, Myngngor River, 1226 m, 25 <i>°</i> 23’30.9” N, 92 <i>°</i> 9’33.6” E, 9.iii.2016; 2 mac. ♂, 1 mac-da ♀, Jowai, Myntdu River, 1240 m, 25 <i>°</i> 27’6.9” N, 92 <i>°</i> 11’27.5” E, 14.iii.2016; 2 mac. ♂, 3 mac-da ♂, 2 mac-da ♀, Demthring Village, Laddemthring Pond, 1361 m, 25 <i>°</i> 25’34.3” N, 92 <i>°</i> 10’28.4” E, 9.iii.2016; 3 mac-da ♂, Raliang Village, Mukoi Lawai Pond, 1259 m, 25 <i>°</i> 30’6.1” N, 92 <i>°</i> 23’56.6” E, 13.iii.2016; 1 mac. ♀, Mukhla Village, Pond, 1365 m, 25 <i>°</i> 29’50.8” N, 92 <i>°</i> 10’18.3” E, 14.iii.2016; 1 mac-da ♀, Shangpung Village, Umyurem River, 1245 m, 25 <i>°</i> 28’56.8” N, 92 <i>°</i> 20’19.2” E, 13.iii.2016; 1 mac. ♂, 1 mac-da ♀, Laskein Village, Paddy field, 1232 m, 25 <i>°</i> 30’39” N, 92 <i>°</i> 24’24.9” E, 13.iii.2016; 1 mac. ♀, Nartiang Village, Umtisong Pond, 1183 m, 25 <i>°</i> 34’19” N, 92 <i>°</i> 12’52.5” E, 14.iii.2016; <b>West Garo Hills District,</b> 3 mac. ♀, 3 apt. ♀, Dalu Village, Sacred Heart Church, Pond, 29 m, 25 <i>°</i> 12’44.73” N, 90 <i>°</i> 13’21.29” E, 10.vi.2016; 1 apt. ♂, Bhaitbari Village, Jinjram River, 22 m, 25 <i>°</i> 47’37.5” N, 89 <i>°</i> 57’50.59” E, 15.vi.2016; 1 mac. ♀, Chibongagre, Sum River, 38 m, 25 <i>°</i> 40’38.95” N, 90 <i>°</i> 1’36.55” E, 15.vi.2016. All the materials are collected by E. Eyarin Jehamalar.</p> <p> <b>Other material examined</b>. <b>INDIA,</b> MADHYA PRADESH, <b>Jabalpur District,</b> Amkhas, Nagpur Road, 4 mac. ♀, 9.xi.1971, Coll. R.K. Singh & Party, Reg. No. A/13303; 1 apt. ♀, Budhagar Tank, 20.iii.1974, Coll. D.S. Mathur & Party, Reg. No. A/15622; CZRC, ZSI, Residential Colony, 5 mac. ♀, 25.ix.2010., 3 mac. ♂, 4 mac. ♀, 30.ix.2010., 1 mac. ♀, 24.vii.2011, Coll. E.E. Jehamalar, Reg. No. A/13484; <b>Panna District,</b> 1 apt. ♂, 2 apt. ♀, Mandla, 14.iii.1987, Coll. R.K. Singh & Party.</p> <p> <b>Repository.</b> The type specimens are deposited in the CEL, ZSI, New Alipore, Kolkata, West Bengal, India. Holotype Reg. No. 5649/H15 and Paratypes Reg. No. 5650/H15 to 5678/H15. The specimens from Madhya Pradesh are deposited in CZRC, ZSI, Jabalpur, Madhya Pradesh, India.</p> <p> <b>Etymology.</b> <i>Mesovelia easaci</i> <b>sp. nov.</b> is named after Mr. J. Easac, the father of the first author, for his constant support.</p> <p> <b>Diagnosis.</b> This species can be identified by the presence of a small gap between the median spinose tuft on the eighth abdominal sternum of the male (Fig. 1G). The hemelytra of the macropterous form has an inverted heartshaped white mark on the membrane (Figs. 1C, D). The sub-basal region of the male paramere is abruptly curved laterally in the dorsal in-situ view (Fig. 1H). The ninth sternum of the female has a flap-like posterolateral projection (Figs. 1L, M).</p> <p> <b>Description. Apterous male</b> (holotype; range of five specimens given in parentheses for some characters): (Figs. 1A, E, F, I–J). Body length 2.29 (2.15–2.39); body width at metanotum 0.64 (0.63–0.70), body width at tergum IV 0.61 (0.60–0.64).</p> <p> <i>Colour</i>. Brown; dorsum of body covered with minute brown setae; rostrum brown to black except fourth segment medially pale; apex of tibia, first and last tarsal segments of all legs brown to black, except basal half of third segment of fore tarsus yellow; claws, setose spines on appendages, pair of short spinose tufts on abdominal sternum VIII black; setae on tergum VIII and proctiger brown; frontoclypeal region dark brown to black; fourth rostral segment black except base brown; abdominal sterna IV and VI with orange tinge.</p> <p> <i>Structural characters.</i> First antennal segment with two sub-apical spinose setae; frontoclypeal region without any characteristic setae, posterolateral region of eye with ocular seta, anterior pair of trichobothria directed anteriorly, other two pairs directed posteriorly. Head length 0.38, head width across eyes 0.51; minimum interocular width 0.19; eye length 0.21, eye width 0.15. Antennal tubercle well developed, outer margin of first antennal segment with two sub-apical setose spines, fourth antennal segment medially annulated (more evident in alcohol). Length of anterior pair of trichobothria 0.10, maximum length of antennal spine 0.07. Lengths of antennal segments I–IV 0.44, 0.32, 0.46, 0.52; rostrum reaching base of hind coxa.</p> <p>Pronotal length 0.21, width 0.56; mesonotal length 0.28, width 0.60; metanotal length 0.13, width 0.63. Lengths of leg segments: foreleg: femur 0.65, tibia 0.58, tarsomeres I–III 0.03, 0.08, 0.09; mid leg: femur 0.90, tibia 0.87, tarsomeres I–III 0.04, 0.17, 0.14; hind leg: femur 1.11, tibia 1.47, tarsomeres I–III 0.05, 0.24, 0.16. Width of fore-, mid-, hind femora 0.11, 0.11, 0.12. Number of medium sized spines on flexor region of fore femur 1 (1–2), small spines 0–1 (0–3), mid femur, 6–7 (6–11), medium sized spines, 0–4 (0–4) small spines; lengths of large spines of fore femur: extensor region 0.05, flexor region 0.03; lengths of large spines of mid femur: extensor region 0.06, flexor region 0.03.</p> <p>Lengths of abdominal tergum 1.29; terga I–VII 0.13, 0.13, 0.12, 0.12, 0.12, 0.14, 0.22; sterna VI–VII 0.12, 0.15. Combined length of abdominal sterna V–VII 0.39. Genitalia: lengths of tergum VIII 0.25, dorsal proctiger 0.04, sternum VIII 0.18, pygophore 0.22, ventral proctiger 0.04, sternum VIII sub-basomedially with pair of black spinose tufts, laterally with fringe of setae, mid-laterally with very small tubercle (more evident in alcohol after dissection), length of spinose tuft on sternum VIII 0.05, width 0.02, width between two tufts 0.01; length between posterior margin of abdominal sternum VII and anterior margin of setose tuft on abdominal sternum VIII 0.02; anterior part of proctiger stalk-like, posterior part bowl-shaped, clothed with long setae posteriorly, median lateral process acute, ventral median excavation on posterior part U-shaped and not reaching near apical plate of proctiger (Fig. 1I); dorsomedian process (dmp) of pygophore with pointed tip (Fig. 1F); paramere broad basally, twisted at middle, apical part, curved, beak-like, directed parallel to broad base (Fig. 1J), paramere when attached to pygophore apical part curved and directed laterad in lateral view (Fig. 1F) and apical part directed laterad and tip anterad in dorsal view (Fig. 1H).</p> <p> <b>Macropterous male (paratype).</b> (Figs. 1C, G–H, K). Body length 2.82 (including hemelytra); body width across humeral angle 0.83.</p> <p> <i>Colour.</i> Yellowish brown; anterior pronotal lobe with oblique brown mark; posterior pronotal lobe black except with indistinct median longitudinal brown stripe; humeral angle brown; mesoscutellum and metanotal elevation black except medially yellowish brown; abdominal sterna IV–VI with orange hue; hemelytra with basal part of first basal cell (bc-I) (subcostal cell) brown, rarely white apically; basal part of second basal cell (bc-II) white, apical half dark brown; anal veinless part of hemelytra adjacent to bc-II base white, apex brown; membrane with inverted heart-shaped white mark, posterior margin brown (Fig. 1C).</p> <p> <i>Structural characters</i>. Head with pair of small ocelli; frontoclypeal region without any characteristic setae, ocular setae present on posterolateral region of eye, anterior pair of trichobothria in front of antenna, directed anteriorly, other two pairs directed posteriorly, head in front of eyes dorsally with 2 setae, one laterally and one centrally; head between anterior and posterior pairs of trichobothria with minute setae. Head length 0.34, head width across eyes 0.54, minimum interocular width 0.20, eye length 0.20, eye width 0.14. Antennal tubercle well developed, lateral margin of first antennal segment with two sub-apical setose spines. Lengths of antennal segments I–IV 0.53, 0.36, 0.51, 0.56.</p> <p>Notum length including metanotal elevation 1.15, length of anterior pronotal lobe 0.17, width 0.58; length of posterior pronotal lobe 0.41; length of mesoscutellum 0.14; length of metanotal elevation 0.09; hemelytra with three closed cells, basal two elongated, apical cell eye-shaped, small, enclosed by thick brown veins. Lengths of leg segments: foreleg: femur 0.77, tibia 0.59, tarsomeres I–III 0.04, 0.09, 0.12; mid leg: femur 0.96, tibia 0.93, tarsomeres I–III 0.04, 0.19, 0.16; hind leg: femur 1.20, tibia 1.54, tarsomeres I–III 0.05, 0.25, 0.18. Width of fore-, mid-, hind femora 0.11, 0.11, 0.12. Number of medium sized spines on flexor region of fore femur 2 (1–2), small spines 2–6 (2–6), mid femur, medium sized spines 8–9 (3–10), small spines 6 (3–7); lengths of large spines of fore femur: extensor region 0.06, flexor region 0.03; lengths of large spines of mid femur: extensor region 0.08, flexor region 0.04. Combined length of abdominal sterna V–VII 0.43, width of sternum V 0.69, hemelytral length 1.93, width 0.54. Structure of genitalia similar to apterous male (Figs. 1G–H, K).</p> <p> <b>Apterous female (paratype).</b> (Fig. 1B). Colour: similar to apterous male. Body length 2.95 (2.93–3.16, n=5), width across metanotum 0.85 (0.84–0.93, n=5), width across tergum V 1.06 (1.01–1.16), head length 0.46, head width 0.57, eye length 0.23, eye width 0.15, minimum interocular width 0.25, length of anterior pair of trichobothria 0.12; interocular region with three pairs of setae, two near anterior margin of eyes, one above the posterior pair of trichobothria; length of antennal spine 0.07; lengths of antennal segments I–IV 0.38, 0.33, 0.48, 0.60, first antennal segment with two setose spines; pronotal length 0.23, width 0.64; mesonotal length 0.29, width 0.74; metanotal length 0.15, width 0.81; anterior margin of prononum with a short, black, collar-like structure. Lengths of leg segments: foreleg: femur 0.73, tibia 0.58, tarsomeres I–III 0.04, 0.09, 0.10; mid leg: femur 0.99, tibia 0.90, tarsomeres I–III 0.06, 0.20, 0.15; hind leg: femur 1.18, tibia 1.64, tarsomeres I–III 0.06, 0.27, 0.18. Width of fore-, mid-, hind femora 0.11, 0.13, 0.14, flexor region of hind femur rarely with small sub-apical spine. Number of medium sized spines on flexor region of fore femur 1–2 (1–3), small spines 3 (1–7); mid femur, medium sized spines 5–7 (4–7), small spines 4 (2–8); lengths of large spines of fore femur: extensor region 0.06, flexor region 0.03; lengths of large spines of mid femur: extensor region 0.09, flexor region 0.04.</p> <p>Dorsal abdominal length 1.85, intersegmental suture of abdominal terga I–III indistinct, lengths of abdominal terga I–VIII 0.15, 0.22, 0.19, 0.19, 0.20, 0.23, 0.26, 0.21, tergum VII long, proctiger length 0.14, lengths of abdominal sterna V–VII 0.15, 0.17, 0.16, combined length of abdominal sterna V–VII 0.48. Genitalia: posterior margin of first gonocoxae (gc1) concave, sternum IX (ab9) posterolaterally with a flap-like projection (ab9-lp), posterolateral region of gonoplac (gp) with few setae, first gonapophyses (go1) and second gonapophyses (go2) crenulate laterally, go1 not reaching tip of go2, go2 pointed apically, proctiger (pr) posteriorly with long setae (Figs. 1L, M).</p> <p> <b>Macropterous female (paratypes, n=5).</b> (Figs. 1D, L–M). Body length 2.68–3.34; width at humeral angle 0.89–0.93; width at tergum IV 0.85–0.98. Hemelytra not completely covering abdomen laterally and posteriorly. Other characters similar to macropterous male and apterous female.</p> <p> <b>Distribution.</b> Madhya Pradesh and Meghalaya states of India.</p> <p> <b>Comparative notes.</b> <i>Mesovelia easaci</i> <b>sp. nov.</b> shares a few characters with <i>M. lillyae</i> <b>sp. nov.</b>, such as the spinose tuft on abdominal sternum VIII, but it differs in the shape of the male proctiger and the armature of the mid femur; in <i>M</i>. <i>lillyae</i> the median excavation (mex) of the proctiger is shallow and almost half round (Fig. 3H), and the basal half of the male mid femur is bare (Fig. 3D). In <i>M. easaci</i> the excavation is deep, slightly angulated (Fig. 1I) and the basal half of the mid femur has spines (Fig. 1E). The male mid femoral spines of <i>M. easaci</i> are similar to those of <i>M. vittigera;</i> however, the spinal tuft on abdominal sternum VIII is without any narrow space in <i>M. vittigera</i> (see Andersen & Wier, 2004 p. 489, Fig. 28).</p>Published as part of <i>Chandra, Kailash, 2017, Three new species of Mesovelia Mulsant & Rey (Hemiptera: Heteroptera: Mesoveliidae) from India, pp. 368-380 in Zootaxa 4312 (2)</i> on pages 369-372, DOI: 10.11646/zootaxa.4312.2.11, <a href="http://zenodo.org/record/852762">http://zenodo.org/record/852762</a>
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