163,112 research outputs found
Ribautia ducalis Pereira, Minelli & Barbieri 1995
No full textRibautia ducalis Pereira, Minelli & Barbieri, 1995 Ribautia (Ribautia) ducalis Pereira, Minelli & Barbieri 1995, Amazoniana 13 (3–4): 325, 329 – 331, figs. 46–87 The species was hitherto known only from the type locality: Brazil: Amazonas: Reserva Florestal A. Ducke. In addition to further material from the same site, we have recently identified material from another locality: Brazil: Amazonas: Manaus: INPA (secondary upland forest, unburned), Kempson soil extraction, (03º 08'S 60 º 01' W), 25.9. 1985, J. Adis et al. leg.: 2 ΨΨ with mature ova, 45 p. l., b.l. 13 and 14 mm; 2 ɗɗ with tubula seminifera full of mature spermatozoa, 43 p. l., b.l. 12 and 13 mm (MLP); ibid., 24.4.1986: 1 Ψ with mature ova, 45 p. l., b.l. 14 mm; 2 ɗɗ juveniles (with 2 + 2 coxal organs only), 43 p. l.,b.l. 8 and 9.5mm; 1 juvenile (sex?),with 1 + 1 coxal organs only, 45 p. l.,b.l. 7.5mm (INPA). The recently studied material includes specimens with number of leg pairs other than those recorded thus far, i.e. ɗɗ with 43 pairs of legs and ΨΨ with 45 pairs of legs.Published as part of Pereira, Luis A., Uliana, Marco & Minelli, Alessandro, 2006, New species and new records of the genus Ribautia Brölemann, 1909 (Chilopoda: Geophilomorpha: Geophilidae) from South America, pp. 45-68 in Zootaxa 1106 on page 66, DOI: 10.5281/zenodo.17144
Chilopoda Geophilomorpha of Europe: a revised list of species, with taxonomic and nomenclatorial notes
No full textBonato, Lucio, Minelli, Alessandro (2014): Chilopoda Geophilomorpha of Europe: a revised list of species, with taxonomic and nomenclatorial notes. Zootaxa 3770 (1): 1-136, DOI: 10.11646/zootaxa.3770.1.
Ribautia proxima Pereira, Minelli & Barbieri 1995
No full textRibautia proxima Pereira, Minelli & Barbieri, 1995 Ribautia (Ribautia) proxima Pereira, Minelli & Barbieri 1995, Amazoniana 13 (3–4): 325, 331 – 333, figs. 88–122 The species was hitherto known only from the type locality: Brazil: Amazonas: Reserva Florestal A. Ducke. We have recently identified material from the following additional localities: Brazil: Amazonas: secondary upland forest (02º 34 ' S 60 º 06' W), capoeira, 7.11. 1990, M. O. de A. Ribeiro leg.: 1 juvenile (Ψ?), 79 p. l., b.l. 14 mm (INPA); ibid., 3.1.1991: 1 Ψ with the two spermathecae full of spermatozoa and with mature ova, 81 p. l., b.l. 32 mm; 2 juveniles (ɗɗ?), 75 and 77 p. l., b.l. 14 mm; 1 juvenile (Ψ?), 81 p. l., b.l. 19 mm; 2 juveniles (incomplete) (AM). Brazil: Amazonas: Rio Tarumã Mirím, capoeira, 25.4. 1983, J. Adis leg.: 1 Ψ with the two spermathecae full of mature spermatozoa, 79 p. l., b.l. 32 mm (MLP). Guyane Française: Piste de St. Elie: 16 Km from Sinnamary, J.M. Betsch leg.: 1 Ψ with the two spermathecae full of spermatozoa, 73 p. l., b.l. 26 mm, 5.5. 1980 (MNHN); 1 Ψ with the two spermathecae full of spermatozoa, 75 p. l., b.l. 25 mm, 9.5. 1980 (MNHN); 1 ɗ with tubula seminifera full of mature spermatozoa, 73 p. l., b.l. 21 mm; 1 juv. (sex?) with only 3 + 3 coxal organs, 75 p. l., b.l. 10 mm, 5.6. 1981 (MNHN). The recently studied material includes specimens with number of leg pairs other than those recorded thus far, i.e. ɗɗ with 81 pairs of legs.Published as part of Pereira, Luis A., Uliana, Marco & Minelli, Alessandro, 2006, New species and new records of the genus Ribautia Brölemann, 1909 (Chilopoda: Geophilomorpha: Geophilidae) from South America, pp. 45-68 in Zootaxa 1106 on pages 66-67, DOI: 10.5281/zenodo.17144
Pectiniunguis ascendens Pereira, Minelli & Barbieri 1994
No full textPectiniunguis ascendens Pereira, Minelli & Barbieri, 1994 (Figs 57–68) Pectiniunguis ascendens Pereira, Minelli & Barbieri, 1994: 174 –176. De Morais, Adis, Berti-Fihlo, Pereira, Minelli & Barbieri, 1997: 117, 118, 119. Pereira, Minelli & Foddai, 1999: 177. Pereira, Foddai & Minelli, 2000: 3, 54. Foddai, Pereira & Minelli, 2000: 127, 177. Foddai, Pereira & Minelli, 2004: 279. Pereira, 2011: 315. Type material examined. Holotype female with 45 leg-bearing segments, body length 23 mm, from Brazil: Amazonas: Rio Tarumã Mirím, Igapó, 16 September 1976, Coll: J. Adis. (INPA). Supplemental morphological information. Female holotype: The following additional morphological details are provided regarding the antennae: Ventral and dorsal surface of a.a. II, V, IX and XIII with very small specialized sensilla. On the ventral side the sensilla are restricted to an internal latero-apical area, represented by two different types (a and b). Type a sensilla very thin and not split apically, type b sensilla very similar to those of the apex of a.a. XIV but thicker, with two diminutive apical branches slightly more evident than those of the latter. Specialized sensilla on dorsal side restricted to external latero-apical area and represented by three different types: a and b similar to a and b of ventral side; and type c sensilla, similar to type b; but thicker, not divided apically and darker (ocherous in color). Number and distribution of type a, b, and c sensilla as in Table 3. Remarks. The original description by Pereira et al. (1994), only mentions two types of specialized sensilla (hereby individualized as “ type b ” and “ type c ”). The original source of this nomenclature is Pereira et al. (1995). Distribution. Known only from the type locality.Published as part of Pereira, Luis Alberto, 2018, A new high-altitude species of centipede from the Andes of Ecuador (Chilopoda, Geophilomorpha, Schendylidae), pp. 409-426 in Zootaxa 4374 (3) on page 421, DOI: 10.11646/zootaxa.4374.3.5, http://zenodo.org/record/115543
Ribautia donatellae Pereira, Uliana & Minelli, 2006, n. sp.
No full textRibautia donatellae n. sp. (Figs. 30–71) Diagnosis: A species of Ribautia with coxal organs opening independently on the coxopleura of last legbearing segment and last legs with tuberclelike praetarsus. Of the Neotropical species in the same genus, R. donatellae n. sp. shares most traits with R. ducalis Pereira, Minelli & Barbieri, 1995, R. onycophaena Pereira, Foddai & Minelli, 2000; R. rossi Chamberlin, 1957 and R. tropica (Brölemann, 1898). Characters in table 3 differentiate these five species. For diagnostic characters of Neotropical species of Ribautia with coxal organs opening independently on the coxopleura, see also Pereira, Minelli & Barbieri (1995) and Pereira, Minelli & Foddai (1997, 2000). Type material: Holotype ɗ (with 4 + 3 coxal organs), 49 pairs of legs, body length 19 mm, from Brazil: Amazonas: at Km 45, BR 174 near Manaus, sandy soil of primary whitesand shrubs (Campina) [K 11 CPA], 10.06. 1987, J. Adis et al. leg. (INPA). Other material examined: same locality, 10.06. 1987, J. Adis et al. leg.: 1 ɗ, adult, 47 pairs of legs, body length 22 mm, 3 + 3 coxal organs; 1 ɗ, subadult, 49 pairs of legs, body length 14 mm, 3 + 3 coxal organs (INPA); 1 Ψ, subadult, 53 pairs of legs, body length 13 mm, 3 + 3 coxal organs (INPA); 1 Ψ, juvenile, 51 pairs of legs, body length 9 mm, 2 + 2 coxal organs (INPA). Etymology: The species is dedicated to dr. Donatella Foddai, who was a very kind and active partner in our previous studies on Neotropical centipedes. Description of ɗ holotype. 49 pairs of legs, body length 19 mm, maximum body width 0.5 mm. Colour (of preserved specimen in alcohol) pale ochre. Antennae ca. 3.0 times as long as the cephalic plate, distally very slightly attenuate. Setae on a.a. I to VI of various length, few in number; those of remaining articles progressively shorter and more numerous towards the tip of the appendage (Fig. 30). Terminal a.a. with ca. 11 claviform sensilla on the external border and ca. 12 on the internal border (Fig. 31). Distal end of this a.a. with ca. five very small sensilla, apparently not split apically (Fig. 31). Ventral and dorsal surface of a.a. II, V, IX and XIII (Figs. 32– 33) with very small specialised sensilla. On the ventral side these sensilla are restricted to an internal lateroapical area and are represented by two different types: a and b. Type a sensilla are very thin and not divided apically, type b sensilla are thicker than type a, have two diminutive apical branches and are pale in colour (a, b, Fig. 32). Specialised sensilla on dorsal side restricted to a lateroapical area and of two types: a and b similar to those of ventral side (a, b, Fig. 33). Distribution of sensilla as in table 4. Ribautia donatellae n. sp. Cephalic plate subrectangular with curved sides, distinctly longer than wide (ratio 1.50: 1). Shape and chaetotaxy as in Fig 34. Clypeus: anterior part with two pairs of setae on the clypeal area, two setae on the middle and a seta on each side, remaining clypeal surface without setae (Fig. 35). Clypeal area very small, surface very densely reticulate (Fig. 36). Labrum: midpiece well developed and sclerotized, with four relatively short and sharply pointed teeth in the middle and 5 + 5 hyaline filaments at the sides. Sidepieces with 7 + 6 long hyaline filaments on the internal half and 3 + 3 very small sharply pointed hyaline teeth on the external half (Fig. 37). Mandible: pectinate lamella with ca. 12 hyaline teeth (Fig. 38). First maxillae without coxosternal lappets (Fig. 39); telopodites with rudimentary lappets (Fig. 40). Coxosternum without setae; median projections of coxosternum subtriangular, welldeveloped, with 3 + 4 large setae. Article II of telopodite with 2 + 2 ventral setae and 2 + 2 lateral sensilla (Fig. 39), dorsal surface apparently without sensilla. Second maxillae: coxites with 5 + 5 setae near the internal margin and 3 + 4 sensilla near the external margin, medially joined through a narrow, hyaline and nonareolate membranous isthmus only (Fig. 39). Process of anterointernal corners of coxosternum inconspicuous (Fig. 41). Apical claw of telopodite welldeveloped, tip slightly curved inward (Fig. 42). Chaetotaxy of coxosternum and telopodites as in Figs. 39 and 42. Forcipular segment: when closed, the telopodites reach the level of the anterior margin of the head or slightly project beyond. Forcipular tergum trapeziform; an irregular transverse row of ca. six setae on the middle, very few additional smaller setae dispersed on the remaining surface. Coxosternum with incomplete chitinous lines (Fig. 43). Telopodites: trochanteropraefemur apically with a conspicuous, subtriangular, deeply pigmented tooth; proximally and next to it there is a smaller, unpigmented, roundtipped projection. Femur and tibia without denticles. Tarsungulum basally with a well developed, deeply pigmented, subtriangular denticle; dorsal and ventral edges of the ungular blade inconspicuously serrulate (Fig. 44). Calyx of poison gland as in Figs. 44–45. Chaetotaxy of coxosternum and telopodites as in Fig. 43. Walking legs: chaetotaxy uniform throughout the body length (Figs. 46–50). Claws with an anterior and a posterior ventrobasal spine (Fig. 51). Sterna: pore fields on the second to the penultimate sternum. Fields undivided on sterna II–XVIII and XLIV –XLVIII, divided in two subsymmetrical areas on sterna XIX– XLIII. Form of fields changing along the trunk as in Figs. 52–59. Number of pores on selected sterna: on sternum II, 17 pores; on IX, 36; on XVIII, 25; on XIX, 9 + 8; on XLIII, 12 + 10; on XLIV, 21; on XLV, 27; on XLVIII, 12. Last legbearing segment without pleurites at the sides of praetergum. Praesternum not divided along the sagittal plane; form and chaetotaxy of tergum and sternum as in Figs. 60–61. Coxopleura sligthly protruding at the distal ventral end, setae numerous on the distal internal edge, the remaining surface with few setae. Right coxopleuron with four single ('homogeneous') coxal organs (Figs. 61–63), left coxopleuron with three coxal organs (Fig. 61), opening near the membrane between coxopleuron and sternum (Figs. 61, 63). Last legs with seven podomeres, form and chaetotaxy as in Figs. 60–61. Praetarsus as a very small tubercle with a diminutive apical spine (Fig. 64). Terminal segments: intermediate tergum with posterior margin convex, intermediate sternum and first genital sternum with posterior margin concave. Gonopods biarticulate, basal article with 6 setae, apical article with 6–7 setae (Figs. 65–66); penis with 3 + 2 dorsal apical setae (Fig. 67). Anal organs present (Figs. 61, 68). Ψ (subadult specimen): 53 pairs of legs, body length 13 mm. All features similar to those in the ɗ except for the shape and hairiness of the last legbearing segment and terminal segments. Last legbearing segment: form and chaetotaxy of tergum and sternum as in Figs. 69– 70. Coxopleura slightly protruding at the distal ventral end, setae small and numerous on the distal ventral edge, the remaining surface with few larger setae. Three single coxal organs on each coxopleuron (Figs. 69–70). Shape and chaetotaxy of the podomeres of last legs as in Figs. 69–71. Terminal segments: shape and chaetotaxy as in Figs. 69–70. Individual variation. In our small series, the ɗɗ have 47 or 49 pairs of legs, the ΨΨ 51 or 53. Adult and subadult ɗɗ have 4 + 3 or 3 + 3 coxal organs, the only subadult Ψ 3 + 3 coxal organs. No significant variation was detected in other characters.Published as part of Pereira, Luis A., Uliana, Marco & Minelli, Alessandro, 2006, New species and new records of the genus Ribautia Brölemann, 1909 (Chilopoda: Geophilomorpha: Geophilidae) from South America, pp. 45-68 in Zootaxa 1106 on pages 55-66, DOI: 10.5281/zenodo.17144
[Report to Chief J. E. Curry, by an unknown author #1]
No full textReport to Chief J. E. Curry, by an unknown author. The report contains a list of officers who gave depositions to the United States Attorney
[Report to Chief J. E. Curry, by an unknown author #2]
No full textReport to Chief J. E. Curry, by an unknown author. The report contains a list of officers who gave depositions to the United States Attorney
Permeability and solubility of carbon dioxide in different glassy polymer systems with and without plasticization
No full textThe description of permeability and solubility of CO 2 in different complex polymer matrices in the glassy
state is analyzed by considering the diffusion coefficient as the product of a kinetic factor, mobility, and a
thermodynamic factor associated to the concentration dependence of the chemical potential of the
diffusing species, according to what recently presented for different pure polymers [Minelli and Sarti, J.
Membr. Sci. 435 (2013) 176–185]. The thermodynamic factor is calculated in a predictive way by using
the nonequilibrium lattice fluid model (NELF) or is obtained directly from experimental solubility
isotherms, when pure component parameters for the NELF model are not available. The mobility factor is
considered to depend exponentially from penetrant concentration, following the usual trend commonly
found experimentally, and its expression contains only two adjustable parameters. The permeability
model is used to describe steady state permeation of CO 2 in a series of complex glassy phases, formed by
polysulfone (PSf) and polyphenylene oxide (PPO) with different plasticizers, glassy polymer blends,
glassy random copolymers and crosslinked polyimides. The analysis shows that in all the cases
examined, the model used is able to describe the experimental trends in a simple and effective way,
accounting for all the different behaviors observed, in which permeability is either decreasing or
increasing with upstream pressure and even when permeability is non-monotonous and presents a
minimum value due to the so-called plasticization effect. A general correlation is also found for both
model parameters: the infinite dilution mobility correlates well with the reciprocal fractional free
volume, according to the FFV theory, while the plasticization factor is associated to the swelling
coefficient of the polymer matrix
The centipede fauna (Chilopoda) of the island of Cyprus, with one new lithobiomorph species
No full textFIGURE 20. Bothriogaster signata and Thracophilus cilicius, distribution in Cyprus.Published as part of Simaiakis, Stylianos Michail, Zapparoli, Marzio, Minelli, Alessandro & Bonato, Lucio, 2013, The centipede fauna (Chilopoda) of the island of Cyprus, with one new lithobiomorph species, pp. 279-306 in Zootaxa 3647 (2) on page 300, DOI: 10.11646/zootaxa.3647.2.3, http://zenodo.org/record/22052
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