205,582 research outputs found
Lonchopterites Grimaldi and Cumming
No full textGenus Lonchopterites Grimaldi and Cumming Lonchopterites Grimaldi and Cumming, 1999: 82. Type species: L. prisca Grimaldi and Cumming, 1999 (Lebanese amber). DIAGNOSIS: (slightly revised, in italics): Antenna with aristal base situated terminally (L. prisca Grimaldi and Cumming) or slightly dorsally (L. burmensis, n. sp.); arista 2-articled, basal one minute, ringlike. Head with large pair of reclinate interfrontals; large pair of lateroclinate fronto-orbitals; ocellar setae large, inside (L. prisca) or outside of triangle (L. burmensis, n. sp.). Wing apex faintly pointed; vein C with large spinules; R 4+5 ending at tip of wing; R 2+3 and R 4+5 divergent at base of wing; M 1 and M 2 diverge near middle of wing; crossveins r-m and dm-cu lacking; anal lobe present, but small; anal vein short, incomplete. The genus is defined largely on the basis of features that are symplesiomorphic for the Lonchopteroidea. TYPE SPECIES: L. prisca Grimaldi and Cumming. DIAGNOSIS: (slightly revised, in italics): Antenna with aristal base situated terminally (L. prisca Grimaldi and Cumming) or slightly dorsally (L. burmensis, n. sp.); arista 2-articled, basal one minute, ringlike. Head with large pair of reclinate interfrontals; large pair of lateroclinate fronto-orbitals; ocellar setae large, inside (L. prisca) or outside of triangle (L. burmensis, n. sp.). Wing apex faintly pointed; vein C with large spinules; R 4+5 ending at tip of wing; R 2+3 and R 4+5 divergent at base of wing; M 1 and M 2 diverge near middle of wing; crossveins r-m and dm-cu lacking; anal lobe present, but small; anal vein short, incomplete. The genus is defined largely on the basis of features that are symplesiomorphic for the Lonchopteroidea. TYPE SPECIES: L. prisca Grimaldi and Cumming.Published as part of Grimaldi, David A., 2018, Basal Cyclorrhapha In Amber From The Cretaceous And Tertiary (Insecta: Diptera), And Their Relationships: Brachycera In Cretaceous Amber Part Ix David A. Grimaldi, pp. 1-97 in Bulletin of the American Museum of Natural History 2018 (423) on pages 1-97, DOI: 10.1206/0003-0090-423.1.1, http://zenodo.org/record/461300
Vita Nuova Rime
No full textEdizione critica e commentata della Vita nuova e delle Rime di Dante.
Donato Pirovano ha curato la Vita nuova e Marco Grimaldi le Rim
Chimeromyia intriguea Grimaldi & Cumming 1999
No full textChimeromyia intriguea Grimaldi & Cumming 1999 (Fig. 4) C. intriguea Grimaldi & Cumming 1999: 71. Diagnosis (revised). Arista dorsal. Base of vein M (proximal to crossveins r-m and bm-cu) complete, but very faint; crossvein r-m either connected to M or with a slight break near connection; vein M 2 incomplete at proximal end (either evanescent or abruptly), distal end either incomplete or connected to wing margin; CuA 1 complete apically, sometimes faint; anal lobe and alula lost; small spur of vein (CuA 2 + CuP) at base of wing; wing very broad, width approximately 0.5 x the length. Female terminalia simple, with small pair of cerci broadly connected to abdomen. In Lebanese amber. Comments. The diagnosis is slightly revised based on a new AMNH female specimen (Fig. 4).Published as part of Grimaldi, David A., Cumming, Jeffrey M. & Arillo, Antonio, 2009, Chimeromyiidae, a new family of Eremoneuran Diptera from the Cretaceous, pp. 34-54 in Zootaxa 2078 on page 39, DOI: 10.5281/zenodo.18726
Eucaudomyiidae Grimaldi 2016, NEW FAMILY
No full textEUCAUDOMYIIDAE, NEW FAMILY TYPE GENUS: Eucaudomyia, new genus. Monotypic. In Burmese amber. DIAGNOSIS: Head small relative to thorax, spherical, eyes occupying anterior three-quarters of head; antenna small, with single postpedicel article, situated frontally (not dorsally or ventrally); body short, very broad (especially thorax), scutellum very small. Wing with highly reduced venation (Rs simple, M vestigial, unbranched) all longitudinal veins apically evanescent; anal lobe highly reduced; tibiae without apical spurs, empodium padlike. Female terminalia developed into long, slender, jackknifed oviscapt comprised of tubular segments VII and VIII, and long, slender, valvelike cerci and hypoproct. Known only from females.Published as part of Grimaldi, David A., 2016, Diverse Orthorrhaphan Flies (Insecta: Diptera: Brachycera) In Amber From The Cretaceous Of Myanmar: Brachycera In Cretaceous Amber, Part Vii David A. Grimaldi, pp. 1-132 in Bulletin of the American Museum of Natural History 2016 (408) on page 85, DOI: 10.1206/0003-0090-408.1.1, http://zenodo.org/record/538094
Finding Dr Livingstone: a history in documents from the Henry Morton Stanley Archives
No full textMathilde Leduc-Grimaldi and James L. Newman transcribed and annotated the entirety of Stanley s documentation available in the Stanley Archives held in trust at the RMCA on behalf of the KBF. For the first time in print, a broader narrative of Stanley s journey is now accessible that includes never-before-seen primary source documents worker contracts, vernacular plant names, maps, ruminations on life, correspondence, lines of poetry, bills of lading all scribbled in his field notebooks. Finding Dr. Livingstone is a crucial resource for those interested in exploration and colonization in the Victorian era, the scientific knowledge of the time, and the peoples and conditions of Tanzania prior to its colonization by Germany
Trefusialaimus idrisi Leduc 2013, sp. nov.
No full text<i>Trefusialaimus idrisi</i> sp. nov. <p>Figs 3-4; Table 1</p> <p>urn:lsid:zoobank.org:act: 56BD1B40-542A-4FE2-BB84-F8FC7C5C2667</p> Diagnosis and relationships <p> <i>Trefusialaimus idrisi</i> sp. nov. is characterised by relatively short body length, presence of numerous golden inclusions in the chords, cephalic setae 0.65-0.80 cbd long, spicules 2.3 abd long, 4 pairs of pericloacal papillae, and long, gradually tapering tail.</p> <p> Until now, only two <i>Trefusialaimus</i> had been described, viz., <i>T. magnus</i> (Filipjev, 1946) and <i>T. monorchis</i> Riemann, 1974. <i>Trefusialaimus idrisi</i> sp. nov. is similar to <i>T. magnus</i> in the shape of the copulatory apparatus and tail, but can be differentiated from the latter by the shorter body length (4540 <i>vs.</i> 7700 <b>M</b> m), lower value of c (7 <i>vs.</i> 21), longer cephalic setae (0.65-0.80 <i>vs.</i> 0.4 cbd), longer spicules (2.3 <i>vs.</i> 1.7 abd), and longer tail (38 <i>vs.</i> 11 abd). <i>T. idrisi</i> sp. nov. can easily be differentiated from <i>T. monorchis</i> by the markedly longer cephalic setae (0.65-0.80 <i>vs.</i> 0.26 cbd), absence of pre- and post-cloacal papillae (present in <i>T. monorchis</i>), and tail shape (gradually tapering <i>vs.</i> conico-cylindrical).</p> Etymology <p>The species is named after Idris Matai Kljucanin Brun, the author’s godson.</p> Material examined <p> <b>Holotype</b></p> <p>♂, collected on 20 Feb. 2011 (NIWA cruise TAN1103, station 69), central Chatham Rise (43.331° S, 178.288° E), water depth 350 m, sediment depth 1-5 cm, mean grain size 55-59 µm, %sand 55-57%, particle sorting (geometric) 4.1-4.3 (NIWA 88349).</p> <p> <b>Paratype</b></p> <p>1 juvenile, same data as holotype (NIWA 88350).</p> Description <p> <b>Male</b></p> <p> Body cylindrical, slender, tapering slightly towards anterior extremity (Fig. 4D), with slight golden colouration due to the presence of numerous round, <i>ca.</i> 1 µm diameter, golden inclusions in the chords (i.e., longitudinal thickenings of the hypodermis protruding internally between the sectors of the longitudinal muscles; Chitwood & Chitwood 1974) (Fig. 4E). Cuticle smooth, thin, <i>ca.</i> 0.7-0.9 µm thick, except in head region (anterior to cephalic setae) where it is slightly thicker, 1.0- 1.6 µm. Head rounded, slightly set-off from body due to thickened cuticle, with three lips, each bearing two small, conical inner labial papillae 1.0- 1.5 µm long (Fig. 3B). Six outer labial setae and four cephalic setae in one circle, double-jointed; cephalic setae slightly longer than outer labial setae (0.75-0.80 cbd <i>vs.</i> 0.65 cbd). Sub-cephalic and somatic setae absent. Amphid pocket-shaped with oval aperture, <i>ca.</i> 6 µm wide by 2 µm high (Fig. 3A). Buccal cavity funnel-shaped, without teeth. Pharynx cylindrical, slightly swollen at posterior extremity, completely surrounds buccal cavity. Pharyngeal lumen lightly but distinctly cuticularised at anterior extremity (Figs 3B, 4B). Nerve ring situated at <i>ca.</i> 50% of pharynx length. Secretory-excretory system not observed. Cardia small.</p> <p> Reproductive system monorchic with single outstretched testis, <i>ca.</i> 1960 µm long. Position of testis relative to intestine difficult to ascertain. Elongated sperm cells, ca 3-5 µm wide by 13-16 µm long, with central rod and nucleus at one extremity (Fig. 3G); vas deferens <i>ca.</i> 520 µm long, without muscular ejaculatory duct. Paired, equal spicules, 2.3 abd long, slightly bent near distal one third, with broad proximal end and narrow pointed distal end; velum present (Fig. 3D). Gubernaculum with two pairs of narrow, pointed lateral crurae (Fig. 3E). Four pairs of small, conical peri-cloacal papillae (Fig. 3F). Precloacal supplements absent. Tail long, <i>ca.</i> 14% of total body length, narrow, gradually tapering, without setae (Fig. 3H).</p> <p> <b>Juvenile</b></p> <p> Similar to male, but with shorter and narrower body, shorter cephalic setae (Figs 3C, 4B), and smaller amphid. Numerous sperm cells are present throughout the pseudocoelom from <i>ca.</i> 90 µm posterior to pharynx to <i>ca.</i> 200 µm anterior to anus (Fig. 4C). Genital and copulatory (i.e., cloacal or vulval) primordia not observed.</p> Discussion <p> The presence of sperm cells in the pseudocoelom of the juvenile <i>Trefusialaimus idrisi</i> sp. nov. specimen is unusual. Some nematode species, such as <i>Oncholaimus oxyuris</i>, can transfer sperm through traumatic insemination (Coomans <i>et al</i>. 1988), a process whereby the male injects sperm directly into the body of a female (or potentially even a male or juvenile) by piercing the cuticle with the spicules. The presence of sperm cells in the juvenile specimen could be explained if a similar process occured in <i>T. idrisi</i> sp. nov. The existence of such a reproductive strategy, however, is highly conjectural because no <i>Trefusialaimus</i> females have ever been observed and (to my knowledge) traumatic insemination has not been described in the suborder Trefusiina.</p> <p> <i>Trefusialaimus idrisi</i> sp. nov. was rare at the study site, with only four specimens (the two type specimens and two juveniles in poor condition, each from a different subcore) recorded out of the 4412 individuals that were identified by Leduc & Pilditch (2013). All individuals were found in the surface (0-1 cm) sediment layer (D. Leduc, unpublished data). A single juvenile specimen (out of 4550 specimens identified from 30 locations on the New Zealand continental margin) was recorded from a site on the northern flank of Chatham Rise at a depth of 1000 m (178.500° E, 44.333° S; silt/clay content 95%) (Leduc <i>et al</i>. 2012a; D. Leduc unpublished data).</p>Published as part of <i>Leduc, Daniel, 2013, Two new free-living nematode species (Trefusiina: Trefusiidae) from the Chatham Rise crest, Southwest Pacific Ocean, pp. 1-13 in European Journal of Taxonomy 55</i> on pages 8-12, DOI: 10.5852/ejt.2013.55, <a href="http://zenodo.org/record/3822945">http://zenodo.org/record/3822945</a>
Calvopeza Grimaldi 2018, new genus
No full textCalvopeza, new genus DIAGNOSIS: (female only). Macrosetae absent from head, thorax, and abdomen (some fine setae/setulae on legs); fine, minute acrostichals present in 2–3 irregular, short rows. Scutum strongly arched; palp large, long. Vein M 1 arched strongly away from M 2; membrane of wing mostly with microtrichia, except in basal cells; A 1 +CuA 2 apically incomplete, A 2 spectral. Tibiae and tarsi with dark bifid scales; metatarsomeres 1–4 slightly flattened and expanded. TYPE SPECIES: C. divergens, new species. ETYMOLOGY: From calvus (L., “naked, bare”), in reference to the virtual lack of setae on the head and body, and - peza, a common suffix in genera of Platypezidae. The genus name is feminine.Published as part of Grimaldi, David A., 2018, Basal Cyclorrhapha In Amber From The Cretaceous And Tertiary (Insecta: Diptera), And Their Relationships: Brachycera In Cretaceous Amber Part Ix David A. Grimaldi, pp. 1-97 in Bulletin of the American Museum of Natural History 2018 (423) on pages 1-97, DOI: 10.1206/0003-0090-423.1.1, http://zenodo.org/record/461300
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