1,274 research outputs found
Perrin Carpenter Interview, 14 October 2002
No full textThe manager of the Rockefeller Greenhouse, a building located in the Cleveland Cultural Gardens, Perrin Carpenter describes the duties of her position and the day to day activities at the greenhouse. Ms. Carpenter also discusses the different entities involved with the care and maintenance of the gardens, financial and horticultural responsibilities, the planning of future gardens, and special events within the garden boundaries
Systematic position of Ascopus Marshall, Oreosecus Marshall, Perarogula Hoffmann and Rhadinocopes Hustache (Coleoptera: Curculionidae: Entiminae) with description of a new species of Ascopus from Guinea
No full textBorovec, Roman, Perrin, Hélène (2019): Systematic position of Ascopus Marshall, Oreosecus Marshall, Perarogula Hoffmann and Rhadinocopes Hustache (Coleoptera: Curculionidae: Entiminae) with description of a new species of Ascopus from Guinea. Zootaxa 4668 (2): 245-257, DOI: https://doi.org/10.11646/zootaxa.4668.2.
Tapinomorphus alticola Borovec & Perrin 2019, comb. nov.
No full textTapinomorphus alticola (Hustache, 1939), comb. nov. (Fig. 6) Rhadinocopes alticola Hustache, 1939: 180 (original description). Type locality. [Kenya] Chip Cherangani, Marakwett, 3 500 m. Type material. Rhadinocopes alticola. Lectotype (here designated): 1 spec. (MNHN, Hustache coll.), ‘ KENYA / Chip Cherangani / MARAKWET / 3.500 m [p] // MUSÉUM DE PARIS / Mission de l´Omo / C. ARAMBOURG / P. A. CHAPPUIS & R. JEANNEL / 1932-33 [p, blue label] // ♀ [hw] // COTYPE [p, red ink] // MUSEUM PARIS / 1949 / Col. A. HUSTACHE [p, blue label] // Rhadinocopes / alticola / m. [hw] // LECTOTYPUS / Rhadinocopes / alticola Hustache, 1939 / Borovec & Perrin desig. 2019 [p, red] // Tapinomorphus / alticola (Hustache) / Borovec et Perrin det. 2019 [p]’. Paralectotypes: 1 male, 1 female (MNHN), ‘ KENYA / Chip Cherangani / MARAKWET / 3.500 m [p] // MUSÉUM DE PARIS / Mission de l´Omo / C. ARAMBOURG / P. A. CHAPPUIS & R. JEANNEL / 1932-33 [p, blue label] // TYPE [p, red ink] // Rhadinocopes / alticola / m. [hw] / Hustache det. [p, the identification only for the ♀] // PARALECTOTYPUS / Rhadinocopes / alticola Hustache, 1939 / Borovec & Perrin desig. 2019 [p, red] // Tapinomorphus / alticola (Hustache) / Borovec & Perrin det. 2019 [p]’. Remarks. The lectotype of Rhadinocopes alticola, here designated, is 2.31 mm long and according to the same characters as R. orientalis it belongs in the genus Tapinomorphus. In this genus T. alticola is very near T. divergens Voss, 1962 based on the odd intervals more elevated than even ones with regular row of semierect, subspatulate elytral setae. Tapinomorphus alticola is easily distinguishable from T. divergens by funicle 7-segmented (vs. 5-segmented in T. divergens: this character was overlooked by Voss in his original description of T. divergens and also in the key to Tapinomorphus species), but also by rostrum parallel-sided (vs. weakly tapered anteriad), funicular segment 2 short, as long as wide (vs. very long, 2.9 × as long as wide), pronotum widest at basal third (vs. at midlength) and elytral semierect setae shorter than half the width of one interval (vs. longer than half the width of one interval).Published as part of Borovec, Roman & Perrin, Hélène, 2019, Systematic position of Ascopus Marshall, Oreosecus Marshall, Perarogula Hoffmann and Rhadinocopes Hustache (Coleoptera: Curculionidae: Entiminae) with description of a new species of Ascopus from Guinea, pp. 245-257 in Zootaxa 4668 (2) on page 253, DOI: 10.11646/zootaxa.4668.2.5, http://zenodo.org/record/344932
Ascopus curvipes Borovec & Perrin 2019, comb. nov.
No full textAscopus curvipes (Hustache, 1931), comb. nov. (Fig. 2) Rhadinocopes curvipes Hustache, 1931: 59 (original description). Rhadinocopes curvipes: Emden & Emden 1939: 233 (catalogue). Type locality. Côte occidentale d´Afrique, Assinie [Ivory Coast]. Type material. Not examined. Additional material examined. 1 spec., Côte occidentale africaine, Assinie (MNHN); 1 spec., Ivory Coast, 1.x.1957, P. Cachan lgt. (MNHN); 1 spec., Ivory Coast, Banco, M. Taou, 8.ii.1960, P. Cachan lgt. (MNHN); 1. spec., Ivory Coast, Adiopodoumé, iv.1953, P. Cachan lgt. (MNHN); 2 spec., Ivory Coast, Mt. Nimba camp., Savannah & gallery forest, 07°35′15″ N, 08°25′05″ W, 28.iv.-8.v. 2016, 823 m, Aristophanous M., Geiser M., Moretto P. leg. (BMNH); 3 spec., Ivory Coast, Bingerville, viii. 1961, humus en forêt secondaire, J. Decelle lgt. (RMCA). Remarks. The species was described based on four specimens collected by Ch. Alluaud. We were not able to examine type specimens, but had one specimen available from the type locality, Assinie, that fits the original description very well. This specimen, based on the shape of rostrum, well developed epistome and scrobes laterally curved downwards and not touching the ventral border of the eye, flat eyes and short antennal scapes, is clearly congeneric with Ascopus pyriformis and must be transferred to that genus as A. curvipes (Hustache, 1931), comb. nov. Here we create a valid species, extremely similar to A. echinatus, separable according to characters stated below in the key.Published as part of Borovec, Roman & Perrin, Hélène, 2019, Systematic position of Ascopus Marshall, Oreosecus Marshall, Perarogula Hoffmann and Rhadinocopes Hustache (Coleoptera: Curculionidae: Entiminae) with description of a new species of Ascopus from Guinea, pp. 245-257 in Zootaxa 4668 (2) on page 248, DOI: 10.11646/zootaxa.4668.2.5, http://zenodo.org/record/344932
Ascopus Marshall 1951
No full textKey to species of Ascopus 1. Raised elytral setae on odd intervals denser than on even ones, creating two irregular rows. Funicle segment 6 isodiametric, segment 7 slightly wider than long. Larger species 4.2–4.8 mm.............................. A. lamottei (Hoffmann) - Raised elytral setae on odd and even intervals equally dense, creating one regular row on each interval. Funicle segments 6 and 7 distinctly wider than long. Smaller species 2.4–3.8 mm...................................................... 2 2. Protibiae straight. Elytra elongate oval, 1.19–1.26 × as long as wide. Ventral borders of scrobes in dorsal view with small laterally prominent teeth................................................................. A. pyriformis Marshall - Protibiae apically distinctly inwardly curved. Elytra globular or subglobular, at most 1.12 × as long as wide. Rostrum with straight sides in dorsal view............................................................................. 3 3. Elytra subglobular, 1.08–1.12 × longer than wide, in short distance behind base narrowed. Eyes small, lateral, space between them equal to space between antennal insertions. Rostrum slightly tapered anteriad, at base at most 1.1 × wider than at apex. Pronotum widest at mid-length. Elytral erect setae subspatulate, apically rounded.................... A. girardi sp. nov. - Elytra globular, at most 1.06 × longer than wide, regularly enlarged posteriad just behind base. Eyes large, subdorsal, space between them slightly narrower than space between antennal insertions. Rostrum distinctly tapered apicad, at base 1.2 × wider than at apex. Pronotum widest at base. Elytral erect setae lanceolate, tip pointed.................................... 4 4. Elytra in lateral view distinctly vaulted just from base; elytra 1.03–1.06 × longer than wide. Pronotum with small lateral projection in the middle. Rostrum longer, at base 1.07–1.14 × as wide as long. Elytral intervals almost flat, 4 × as wide as narrow striae............................................................................. A. curvipes (Hustache) - Dorsal curvature of elytra almost continuous with that of pronotum; elytra as long as wide to 1.04 × wider than long. Pronotum without lateral projection. Rostrum shorter, at base 1.21–1.28 × as wide as long. Elytral intervals vaulted, 2.5–3 × wider than wide striae........................................................................ A. echinatus (Marshall)Published as part of Borovec, Roman & Perrin, Hélène, 2019, Systematic position of Ascopus Marshall, Oreosecus Marshall, Perarogula Hoffmann and Rhadinocopes Hustache (Coleoptera: Curculionidae: Entiminae) with description of a new species of Ascopus from Guinea, pp. 245-257 in Zootaxa 4668 (2) on page 252, DOI: 10.11646/zootaxa.4668.2.5, http://zenodo.org/record/344932
Euclid commissioning results: the near infrared spectrometer and photometer (NISP) signal detection chain
No full textEuclid, the M2 mission of the ESA’s Cosmic Vision 2015-2025 program, aims to explore the Dark Universe by conducting a survey of approximately 14 000 deg2 and creating a 3D map of the observable Universe of around 1.5 billion galaxies up to redshift z ∼ 2. This mission uses two main cosmological probes: weak gravitational lensing and galaxy clustering, leveraging the high-resolution imaging capabilities of the Visual Imaging (VIS) instrument and the photometric and spectroscopic measurements of the Near Infrared Spectrometer and Photometer (NISP) instrument. This paper details some of the activities performed during the commissioning phase of the NISP instrument, following the launch of Euclid on July 1, 2023. In particular, we focus on the calibration of the NISP detectors’ baseline and on the performance of a parameter provided by the onboard data processing (called NISP Quality Factor, QF) in detecting the variability of the flux of cosmic rays hitting the NISP detectors. The NISP focal plane hosts sixteen Teledyne HAWAII-2RG (H2RG) detectors. The calibration of these detectors includes the baseline optimization, which optimizes the dynamic range and stability of the signal acquisition. Additionally, this paper investigates the impact of Solar proton flux on the NISP QF, particularly during periods of high Solar activity. Applying a selection criterion on the QF (called NISP QF Proxy), the excess counts are used to monitor the amount of charged particles hitting the NISP detectors. A good correlation was found between the Solar proton flux component above 30 MeV and the NISP QF Proxy, revealing that NISP detectors are not subject to the lower energy components, which are absorbed by the shielding provided by the spacecraft
Afrosmicronyx angolanus Haran & Perrin 2017, comb. n.
No full textAfrosmicronyx angolanus (Hustache, 1935) comb. n. Figs 2D, 3D, 5D, 6D Smicronyx (Chalybodontus) angolanus Hustache, 1935b: 186 Material examined. Holotype ♂: [Angola] ‘Ebanga nov.’ ‘Angola, Mission sc. Suisse. 1932–1933 ’ ‘Museum Paris. 1968. col. A. Hoffmann’ ‘ Smicronyx (Chalybodontus) angolanus Hust’ (fitted with a red holotype label reading: “HOLOTYPE/ Afrosmicronyx angolanus / Hustache, 1935/ Haran & Perrin des. 2017”; MNHN, Hoff.coll). Other material. Angola, Kalukembe, xii.1932, Mission sc. Suisse (1 ♂, MNHN, Gene.coll). Redescription. (♂) Body length 4.6 mm. Colour. Body integument black; vestiture consisting of short rounded recumbent scales, black with a copper shine. Head. Rostrum as long as head plus prothorax, thick, moderately downcurved, densely punctuate, smooth at apex, sides bearing two carinas merged near antennal insertion, transversal furrow at base of rostrum shiny, head short; antennae with segment 1 as long as 2 + 3. Prothorax. Isodiametric, widest proximally near middle, greatly narrowed at apex, densely and coarsely punctuate, median line present and slightly raised. Elytra. Sides rounded, widest near middle (ratio w/l: 0.65), humeri raised, declivital callosities present but weak, followed by a depression, striae narrow, interstriae flat and wide; scutellum small, shiny. Abdomen. Underside covered with dark scattered scales with a metallic-copper shine, ventrites 1–2 sub-equal, shorter than 3+ 5. Legs. Femora clavate, armed with one ventral tooth; pro- and mesotibiae straight, armed with one ventral tooth proximally near middle; fore-tibiae bisinuate, thickened near middle. Genitalia. Penis short (ratio w/l: 0.56), sides rounded, converging apically, apex rounded, curvature in lateral view stronger in apical half (Fig. 6D). Female not known. Life history. Unknown. Adults collected in November and December. Distribution. Angola. Discussion. This species is most similar to Afrosmicronyx maerens Marshall. The two species can be distinguished by the colour of the coating (black in A. angolanus, variegated grayish and brownish in A. maerens), the tooth on the protibiae (present in A. angolanus, tibiae only thickened in A. maerens) and the shape of the penis (sides rounded in A. angolanus, narrowed in apical half in A. maerens). Hustache placed this species, with doubts, in the subgenus Chalybodontus of Smicronyx (Hustache, 1935). It is here transferred to Afrosmicronyx due to the presence of scales on all of its elytra, the presence of a ventral tooth on the femora and tibiae as well as its Afrotropical distribution. Contrary to what is stated in the description, the rostrum bears a ventral tooth at its base. This condition is encountered in all species of Afrosmicronyx and therefore not restricted to the subgenus Chalybodontus. Of the several type specimens mentioned by Hustache, the one used for description (with labels corresponding to the type locality) was located in the Hoffmann collection (Perrin, 1998).Published as part of Haran, Julien & Perrin, Hélène, 2017, Revision of the genus Afrosmicronyx Hustache (Coleoptera, Curculionidae, Curculioninae), pp. 132-148 in Zootaxa 4365 (2) on pages 137-138, DOI: 10.11646/zootaxa.4365.2.2, http://zenodo.org/record/111750
Afrosmicronyx quadrituberculatus Haran & Perrin 2017, comb. n.
No full textAfrosmicronyx quadrituberculatus (Hustache, 1936) comb. n. Figs 2B, 3B, 5B, 6B Smicronyx quadrituberculatus Hustache, 1936: 21 Material examined. Lectotype ♂ [here designated]: [Central African Republic] ‘A. E. F. 1904. Fort de Possel. Oubangui—Chari. Dr J. Decorse’ ‘ Smicronyx quadrituberculatus Hust. ’ (MNHN, Hoff.coll, fitted with a red lectotype label reading: “LECTOTYPE/ Afrosmicronyx quadrituberculatus / Hustache 1936 / Haran & Perrin des. 2017”). Paralectotypes [here designated]: data as for LECTOTYPE (MNHN; 7♂, 2♀, 1 sex not determined Hust.coll, 2♂, 1♀, Hoff.coll.). Other material. Cameroon, 1926, F. Zumpt (2♂, MNHN, Hoff.coll); Yaoundé, ix- 1930, Vadon leg. (1 ♀, CBGP); Yaoundé (St. de Nkolbisson) 10.iv.1967, B. de Miré leg. (1 ♀, CBGP). Nigeria, Ibadan, 27.xi.1955, G.H. Caswell leg.,“At light”, M.L. Cox det. (1♂,1 ♀, BMNH); 20.xii.1956, G.H. Caswell leg., “ Elaeis guineensis ”, “leaf”, G.A.K. Marshall det. (1 ♀, BMNH); 20.xii.1956, G.H. Caswell leg., “ Psophocarpus tetragonolobus ”, “leaf”, (1 ♀, BMNH); Owena FR, W. State, viii.1977, J.T. Medler leg., (1♂, BMNH). Redescription. (♂) Body length 3.9–4.1 mm. Colour. Body integument black; vestiture consisting of rounded recumbent scales, twice as long as wide, forming a black area on basal third of interstriae 1–4, a whitish strip between humeri and centre of elytra and a whitish area on apical third of elytra. Head. Rostrum longer than head plus prothorax, thin, evenly narrowing from base to apex, twice as long at base than at apex, moderately downcurved, densely covered by scales at base, less densely at antennal insertions, smooth at apex, transverse furrow at base of rostrum shiny, head short; antennae reddish, funicle segment 1 slightly longer than 2, 2 slightly longer than 3, 1 as long as 3+4. Prothorax. Isodiametric, widest at middle, greatly narrowing at apex, sides regularly rounded; integument densely and coarsely punctate, median line present and slightly raised; scales darker along a longitudinal strip, paler on sides. Elytra. Sides rounded, widest near middle (ratio w/l: 0.72), humeri raised, striae narrow, interstriae flat and wide, apex of 3 and 5 with a strong tubercle, tubercle on 5 larger and sharper; scutellum shiny, small but visible. Abdomen. Underside covered with pale brownish scales, ventrites 1 and 2 elongate, 1 slightly longer than 2, 2 much shorter than 3–5. Legs. Reddish, femora clavate, armed with one ventral tooth; tibiae straight, unarmed, thickened proximally near middle. Genitalia. Penis elongate (ratio w/l: 0.28), sides sub-parallel, slightly divergent near apex, apex rounded, curvature in lateral view stronger at base (Fig. 6B). Females are distinguished from males by their rostrum, which is less coarsely punctate and narrower in apical half. Life history. Unknown. Adults collected from April to December. Distribution. Cameroon, Central African Republic, Nigeria. Discussion. Afrosmicronyx quadrituberculatus can be distinguished from all other species of the genus by it distinct elytral pattern (dark area at base, white area on apical third of elytra and a distinct “V” pattern of pale scales from the base to middle of the elytra) and the presence of four tubercles on the apical third of the elytra. The penis is very elongate and distinct from that of all other species. The specimens of A. quadrituberculatus examined from the type locality (evidently syntypes) are in Hoffmann’s collection in the MNHN, and in the absence of such material in the Hustache collection we designated the lectotype of the species from the series in Hoffmann’s collection. Type specimens of other species described by Hustache are similarly deposited in the Hoffmann collection (Perrin, 1998).Published as part of Haran, Julien & Perrin, Hélène, 2017, Revision of the genus Afrosmicronyx Hustache (Coleoptera, Curculionidae, Curculioninae), pp. 132-148 in Zootaxa 4365 (2) on page 136, DOI: 10.11646/zootaxa.4365.2.2, http://zenodo.org/record/111750
FIGURE 2 in Revision of the genus Afrosmicronyx Hustache (Coleoptera, Curculionidae, Curculioninae)
No full textFIGURE 2. Habitus of species of Afrosmicronyx. A. Afrosmicronyx giganteus (Hustache), neotype ♀. B. A. quadrituberculatus (Hustache), lectotype ♂. C. A. sopubiae (Marshall), lectotype ♂. D. A. angolanus (Hustache), holotype ♂. E. A. maerens (Marshall), lectotype ♂. F. A. dorsomaculatus (Cox), specimen from Sudan (♀). G. A. mirei sp. n., holotype ♂. H. A. armipes (Voss), holotype ♂. I. A. madagascariensis sp. n., holotype ♂. J. A. umbrinus (Hustache) lectotype ♀. Scale bars (A to J): 0.2 mm.Published as part of Haran, Julien & Perrin, Hélène, 2017, Revision of the genus Afrosmicronyx Hustache (Coleoptera, Curculionidae, Curculioninae), pp. 132-148 in Zootaxa 4365 (2) on page 139, DOI: 10.11646/zootaxa.4365.2.2, http://zenodo.org/record/111750
Design of the life signature detection polarimeter LSDpol
No full textMany biologically produced chiral molecules such as amino acids and sugars show a preference for left or right handedness (homochirality). Light reflected by biological materials such as algae and leaves therefore exhibits a small amount of circular polarization that strongly depends on wavelength. Our Life Signature Detection polarimeter (LSDpol) is optimized to measure these signatures of life. LSDpol is a compact spectropolarimeter concept with no moving parts that instantaneously measures linear and circular polarization averaged over the field of view with a sensitivity of better than 10-4. We expect to launch the instrument into orbit after validating its performance on the ground and from aircraft. LSDpol is based on a spatially varying quarter-wave retarder that is implemented with a patterned liquid-crystal. It is the first optical element to maximize the polarimetric sensitivity. Since this pattern as well as the entrance slit of the spectrograph have to be imaged onto the detector, the slit serves as the aperture, and an internal field stop limits the field of view. The retarder's fast axis angle varies linearly along one spatial dimension. A fixed quarter-wave retarder combined with a polarization grating act as the disperser and the polarizing beam-splitter. Circular and linear polarization are thereby encoded at incompatible modulation frequencies across the spectrum, which minimizes the potential cross-talk from linear into circular polarization.Astrodynamics & Space Mission
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