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Odontomachus scifictus Sorger & Zettel, 2011, sp.n.
No full textOdontomachus scifictus sp.n. (Figs. 7, 13, 19, 46) Etymology: This name serves as an homage to early science fiction movies incorporating ants - the first author came across a poster of the movie "Empire of the Ants" (1977) directed by Bert I. Gordon that clearly depicts a giant, dangerously looking Odontomachus species and decided that such prominent display should be memorialized. Type locality: Camiguin Island, municipality of Mambajao, W of Mambajao, near spring of Katibawasan, ca. 350 - 400 m a.s.l. Type material: Holotype worker (USC): Camiguin: W Mambajao, Katibawasan spring area, 350 - 400 m, 13. and 15.III.2010, leg. H. Zettel & C. V. Pangantihon (515). Paratypes (70 workers; CSW, CZW, NHMW, UPLB, USC): same locality data as holotype, 65 ∑∑. W Mambajao, Benon, Saran - Kampanan, 500 - 800 m, 16. and 18.III. 2010, leg. H. Zettel & C. V. Pangantihon (516), 1 ∑. Mambajao, Yumbing, 28.X.2008, leg. C. V. Pangantihon (P306), 1 ∑. Catarman, Mainit, Tuasan Falls, 23.X.2008, leg. C. V. Pangantihon (P302), 3 ∑∑. Description of worker: Measurements: holotype worker: CI 70, HL 3.32, HW 2.33, MdI 60, MdL 2.00, MsL 4.47, PnW 1.38, PtH 1.36, PtL 1.48, PtW 0.50, SI 141, SL 3.28, TL 14.50; paratype worker with smallest HW: CI 67, HL 2.93, HW 1.97, MdI 54, MdL 1.58, MsL 3.80, PnW 1.18, PtH 1.15, PtL 1.28, PtW 0.42, SI 151, SL 2.97, TL 12.63; paratype worker with largest HW: CI 71, HL 3.42, HW 2.42, MdI 59, MdL 2.00, MsL 4.80, SI 139, SL 3.37, PnW 1.43, PtH 1.38, PtL 1.60, PtW 0.52, TL 15.25. Structures: Striation on head extending from frontal lobes to ocular ridge, rest of head smooth and shiny. Pronotum with fine, roughly round striation, closed circles or loops clearly visible in dorsal view; posterolateral parts without striation, smooth and shiny. Mesopleuron smooth and shiny, some fine transverse striation may occur to varying extent but always at least the central region smooth and shiny. S-shaped, long and acute petiolar spine, slightly bent backwards. Entire ant appearing very shiny / glossy. Pilosity: Pubescence sparse, short. Colour: Uniformly reddish brown. Habitats: Collected in shaded, humid places mostly in degraded, dipterocarp forests. The type locality was near a stream. Distribution (Fig. 46): Endemic to the Philippines and only known from the island of Camiguin. Notes: Odontomachus scifictus sp.n. is very similar to O. philippinus, but differs in the extension of the smooth area on the mesopleuron reaching the meso-metapleural suture, and by the distinct tubercles of the petiole (petiole in anterodorsal aspect widest at tubercles). The distribution of O. scifictus sp.n. and O. philippinus are separated by another vicariant form, Odontomachus alius sp.n. See also notes for Odontomachus sp. 2 from Mindanao.Published as part of Sorger, D. M. & Zettel, H., 2011, On the ants (Hymenoptera: Formicidae) of the Philippine Islands: V. The genus Odontomachus Latreille, 1804., pp. 141-163 in Myrmecological News 14 on page 15
Odontomachus schoedli Sorger & Zettel, 2011, sp.n.
No full textOdontomachus schoedli sp.n. (Figs. 4, 10, 16, 47) Etymology: This species is named for our late colleague Stefan Schödl, former curator for Hymenoptera at the Natural History Museum Vienna, who collected a major part of the type series. Type material: Holotype worker (UPLB): Luzon: Mountain Province: south of Sagada, Bagnen, slopes of Mt. Polis, 1600 m, 26.II.1999, leg. S. Schödl (23). Paratypes(24 workers (BMNH, CZW, NHMW, UPLB): same locality data as holotype, 13 ∑∑, leg. H. Zettel (189), 6 ∑∑. B e n g u e t: west of Baguio, at km 7 of Asin Road, 17.II. 1999, leg. S. Schödl (11), 2 ∑∑, leg. H. Zettel (179), 2 ∑∑; Baguio, leg. C.F. Baker, 1 ∑. Description of worker: Measurements: holotype worker: CI 72, HL 2.95, HW 2.12, MdI 58, MdL 1.70, MsL 4.17, PnW 1.25, PtH 1.18, PtL 1.12, PtW 0.49, SI 146, SL 3.08, TL 16.25; paratype worker with smallest HW: CI 72, HL 2.98, HW 2.13, MdI 55, MdL 1.65, MsL 4.00, PnW 1.20, PtH 1.18, PtL 1.18, PtW 0.51, SI 144, SL 3.07, TL 12.75; paratype worker with largest HW: CI 73, HL 3.60, HW 2.62, MdI 59, MdL 2.13, MsL 5.93, PnW 1.52, PtH 1.48, PtL 1.53, PtW 0.56, SI 137, SL 3.58, TL 16.13. Structures: Head striate; striation reaching occipital margin. Pronotum with fine, transverse striation. Mesopleuron with fine transverse striation. Petiole stout, with short spine, bent backwards only very slightly. Pilosity: Pubescence sparse, long. Colour: Head and mesosoma medium brown, petiole and gaster dark brown. Distribution (Fig. 47): Endemic to the Philippines: only in the north of Luzon: Mountain Province, Benguet. Habitats: This species was collected at higher elevations in strongly degraded forests. Notes: Odontomachus schoedli sp.n. is only known from the western mountain ranges of northern Luzon. In Benguet it is sympatric with O. infandus. Main differences between these two species are the striation of the pronotum, which is transverse in O. schoedli sp.n. but more or less longitudinal in O. infandus, and the shape of the petiole, which is remarkably short and with a very straight anterior face of the node (including spine) in O. schoedli sp.n., whereas it has a longer, curved spine in O. infandus (only weakly developed in the smallest specimens). The uniformly light chocolate brown colour of head and mesosoma of O. schoedli sp.n. is striking, but we have seen a few specimens of O. infandus from northern Luzon with the same colouration.Published as part of Sorger, D. M. & Zettel, H., 2011, On the ants (Hymenoptera: Formicidae) of the Philippine Islands: V. The genus Odontomachus Latreille, 1804., pp. 141-163 in Myrmecological News 14 on page 15
Odontomachus alius Sorger & Zettel, 2011, sp.n.
No full textOdontomachus alius sp.n. (Figs. 5, 11, 17, 46) Etymology: Latin for "the other", this name refers to the fact that samples of this species were already recognized as "different" by Brown (1976) (but remained unnamed). The name is also inspired by the popular American TV show "Lost". Type locality: Cebu, west of Cebu City, Minglanilla, Camp 7, 10° 16' N, 123° 45' E. Type material: Holotype (worker, USC): Cebu: west of Cebu City, Minglanilla, Camp 7, secondary forest near small creek, 16.XI.2003, leg. H. Zettel & C. V. Pangantihon (358). Paratypes (101 workers, 2 gynes, CSW, CZW, NHMW, UPLB, USC): Cebu: same locality data as holotype, 4 ∑∑. Cebu City, Tabunan, Cantipla-I, forest reserve, ca. 800 m, 23.IX.2006, leg. C. V. Pangantihon (P250), 1 ∑, 18.II.2007, leg. H. Zettel (473), 1 ∑, 28.IX.2007, leg. C. V. Pangantihon (P270), 2 ∑∑, 8.II.2008, leg. H. Zettel & C. V. Pangantihon (503), 1 ∑, 19.-20.IX.2008, leg. C. V. Pangantihon (P301), 4 ∑∑, 1 ♀, 20.-24.VII.2009, leg. C. V. Pangantihon (P327), 2 ∑∑. Dalaguete, Mantalungon, 29.-30. VIII.2010, leg. C. V. Pangantihon (P361), 1 ∑. Dalaguete, Mantalongon, Dingayup River, 4.XI.2010, leg. H. Zettel & C. V. Pangantihon (524), 5 ∑∑. Bohol: Bilar, Man Made Forest, 29.XI.2005, leg. C. V. Pangantihon (P427), 4 ∑∑. Leyte: L e y t e: E Ormoc, Lake Danao area, 11.III.1998, leg. H. Zettel (158), 2 ∑∑, 13.II.2000, leg. S. Schödl (16), 19 ∑∑, 13.II.2000, leg. H. Zettel (237), 3 ∑∑. Baybay, ViSCA/ LSU, Mt. Pangasugan, Calbiga-a River, 50 - 200 m, 12.II. 2000, leg. H. Zettel (236), 13 ∑∑, 20.-21.III.2005, leg. H. Zettel & & C. V. Pangantihon (422), 12 ∑∑. Biliran: Almeria, Kabungasan, Mt. Panamao, Upper, 15.XI.2009, leg. C. V. Pangantihon (P334), 1 ∑. Samar: W e s t e r n S a m a r: east of Basey, Sohoton National Park, banks of Sohoton River, 29.I.2000, leg. S. Schödl (2), 13 ∑∑, leg. H. Zettel (221), 9 ∑∑. Catanduanes: east of San Andres, below Lu Yong cave, 11.-12.III.1999, leg. H. Zettel (200), 2 ∑∑, 1 ♀, 12.III.1999, leg. F. Seyfert (26), 1 ∑, 12.IV.2000, leg. H. Zettel (254), 1 ∑. Description of worker: Measurements: holotype worker: CI 69, HL 3.37, HW 2.32, MdI 60, MdL 2.03, MsL 4.27, PnW 1.38, PtH 1.38, PtL 1.44, PtW 0.53, SI 150, SL 3.48, TL 14.81; paratype worker with smallest HW: CI 68, HL 2.67, HW 1.80, MdI 58, MdL 1.53, MsL 3.47, PnW 1.03, PtH 1.02, PtL 1.11, PtW 0.46, SI 154, SL 2.77, TL 11.75; paratype worker with largest HW: CI 77, HL 3.40, HW 2.62, MdI 64, MdL 2.17, MsL 4.60, PtH 1.46, PtL 1.58, PtW 0.62, PnW 1.50, SI 136, SL 3.55, TL 15.56. Structures: Head striate, but striation not reaching nuchal carina. Pronotum with variable fine striation, either transversely oriented or with roundish or longitudinal loops. Mesopleuron with fine transverse striation. Petiolar spine S-shaped, very long, acute, slightly bent backwards. Gaster low anteriorly, strongly flattened, impression distinct, often linear. Pilosity: Pubescence sparse, short. Colour: Bicoloured; head and gaster light brown to almost yellowish, contrasting with dark brown mesosoma and petiole. Description of gyne: Measurements: gyne with smallest HW: CI 73, HL 3.43, HW 2.52, MdI 52, MdL 1.80, MsL 4.73, PnW 1.80, PtH 1.53, PtL 1.57, PtW 0.75, SI 131, SL 3.30, TL 16.56; gyne with largest HW: CI 75, HL 3.47, HW 2.62, MdI 56, MdL 1.95, MsL 5.20, PnW 1.95, PtH 1.91, PtL 1.80, PtW 0.77, SI 124, SL 3.25, TL 16.00. Compared with O. infandus gyne, striation of head strongly reduced posteriorly. Compared with worker, striation of mesopleuron strongly reduced, in larger gyne absent except for striation in front of meso-metapleural suture, in smaller gyne almost totally absent, except most dorsal area. Colour: Head, mesonotum, scutellum, metanotum, and mesopleuron pale, yellowish to very light brown, contrasting strongly with other brown body parts. Petiole and gaster light brown, similar to worker. Distribution (Fig. 46): Endemic to the Philippines, recorded from the islands of Catanduanes, Samar, Biliran, Leyte, Bohol, and Cebu. Habitats: Collected in lowland dipterocarp forests, some of the forests remnant patches or strongly degraded. Notes: We characterize workers of O. alius sp.n. by the following combination of characters: Head distinctly and gaster notably lighter coloured than mesosoma. Head with extended striation (relatively short in specimens from Catanduanes), but never reaching nuchal carina medially. Mesopleuron without smooth area (although striation is faded in some individuals). Petiole with long, S-curved spine. Odontomachus alius sp.n. is a variable species with five distinct island-endemic forms from (I) Cebu, (II) Bohol, (III) Leyte and Biliran, (IV) Samar, and (V) Catanduanes. Odontomachus sp. 1 from southern Luzon may also belong to this species, but its characters do not comfortably fit the pattern (see discussion for Odontomachus sp. 1). Each of these forms is relatively stable in its set of characters, and they may as well be treated as subspecies or morphologically weakly differentiated species. There is a distinct trend of changing characters from Cebu eastwards and northwards. The pronotum sculpture changes from transversely striate (Cebu) to roundish or transverse loops (Bohol) to longitudinal loops (other islands). The gaster is lightest (yellowish brown) in specimens from Cebu and Bohol, and darkest in specimens from Samar and Catanduanes. The striation of the temporal prominences is most strongly extended in specimens from Cebu, Bohol, Leyte, and Biliran, intermediate in specimens from Samar, and distinctly reduced in specimens from Catanduanes. This trend contrasts with the parapatric populations of O. philippinus on Negros with completely smooth temporal prominences and of O. infandus on southern Luzon with completely striate temporal prominences.Published as part of Sorger, D. M. & Zettel, H., 2011, On the ants (Hymenoptera: Formicidae) of the Philippine Islands: V. The genus Odontomachus Latreille, 1804., pp. 141-163 in Myrmecological News 14 on pages 152-15
Polyrhachis (Myrma) pirata Sorger & Zettel, 2009, sp. n.
No full text<p>Polyrhachis (Myrma) pirata sp. n.</p> <p>(Figs 7-10, 12)</p> <p>Etymology: Latin for "pirate," used as a noun in apposition. The name pirata is an homage to the mythic world of ancient pirates. The stoutness, distinct colours and massive spines of this species - in comparison to related species - served as an inspiration for this name.</p> <p>Type locality: Philippines, Luzon Island, Quezon Province, Quezon National Park near Atimonan, dipterocarp forest near Old Zigzag Road.</p> <p>Type material: Holotype (worker) labelled " Philippinen: Luzon, Quezon \ Atimonan, Quezon NP \ Old Zigzag Rd., 24.-30.3.\ 1998, leg. Zettel (#165)" (UPLB). Paratypes: Luzon Isl.: Zambales Prov. [erroneously labelled " Bataan "]: Olongapo, Subic Bay, " Jungle Educational Survival Training" area, 4.XII.1993, leg. H. Zettel (#37h), 1 worker (NHMW). Quezon Prov.: Atimonan, Quezon National Park, Old Zigzag Road, 24.- 30.III.1998, leg. H. Zettel (#165), 31 workers (CZW, CSW, NHMW, QMBA, UPLB, USC-EC), 16.III.1999, leg. H. Zettel (#202), 2 workers (NHMW). Camarines Norte Prov.: Labo, Tulay na Lupa, Mt. Labo - Mt. Bayabas area, 17.-18.III.2004, leg. H. Zettel & C. V. Pangantihon (#382), 1 worker (CZW). Mindoro Isl.: Occidental Mindoro: [San Jose,] Mangarin, 12.[19?]17, unknown collector, 1 worker (MCZL). Samar Isl.: Northern Samar Prov.: San Joaquin, Lologayan Falls, 4.-6.III.2003, leg. H. Zettel (#345), 1 worker (CZW), 1.- 5.III.2004, leg. H. Zettel (#377), 9 workers (CZW, NHMW, UPLB).</p> <p>Additional material (not examined): G. Alpert (in litt.) reported four workers from Luzon Island held in the Museum of Comparative Zoology, Cambridge, U.S.A.: Zarnbales Prov., no further data, leg. Baker (gift of W.M. Wheeler), 1 worker; Laguna Prov.: Pakil, Saray [labelled "Paeta, Sarai"], leg. McGregor, 1 worker; Mt. Makiling, low altidute, leg. F.X. Williams (gift of W.M. Wheeler), 2 workers.</p> <p>Description of worker: Measurements: Holotype worker: TL 10.8 mm, HW 2.33 mm, HL 2.83 mm, CI 82, SL 3.33 mm, SI 143, PSPD 3.28 mm, PPL 1.34 mm, PPW 1.71 mm, PPI 128, PTW 3.00 mm, MTL 3.66 mm. Paratype workers (n = 10): TL 10.1-10.8-11.5 mm, HW 2.19-2.37-2.50 mm, HL 2.60-2.83-2.98 mm, CI 81-84-86, SL 3.15-3.34-3.50 mm, SI 130-141-146, PSPD 2.90-3.19-3.50 mm, PPL 1.23-1.38-1.49 mm, PPW 1.49-1.75-1.94 mm, PPI 114-127-137, PTW 2.49-2.93-3.23 mm, MTL 3.18-3.47-3.64 mm.</p> <p>Head and mesosoma with bluish green, in some specimens slightly coppery shimmer; petiole and gaster often appearing darker and more bluish than mesosoma. Antennae and legs (except femora) black.</p> <p>Head dorsum with some fine rugae between eyes, sides without rugae. Venter without setae. Vertex usually without setae (except in one specimen with two setae). Frons with fine median furrow and 4-7 setae. Genae without setae. Clypeus on disk with 5-7 setae.</p> <p>Mesosoma dorsally without setae; in addition to microsculpture on disk of pronotum and - more distinct - on propodeum with very fine longitudinal rugae. Pronotal spines long and massive, in cross-section approximately triangular, their bases conspicuously elevated over anterior pronotal disk (Figs 8, 10). Ridge separating dorsal and posterior face of propodeum sinuate, medially slightly depressed (Figs 9, 10). Sides of propodeum dorsal of stigma with strong longitudinal rugae overlaying microsculpture (Fig 8). Femora and tibiae without setae.</p> <p>Sculpture of gaster with isodiametric reticulum; tergite 1 without setae, tergite 2 usually without setae (except in five specimens with few setae at hind margin), following tergites and all sternites with numerous setae increasing in length towards apex of abdomen (Fig. 8).</p> <p>Notes: Some intraspecific variation has been observed in P pirata sp. n.: Compared with specimens from Luzon, the ants from Northern Samar are smaller, appear more gracile, and have a distinctly more bluish shimmer on gaster.</p> <p>Distribution: Central and Southern Luzon, Mindoro and Samar (Fig 12).</p> <p>Biology: Habitats are very similar to those of P. cyaniventris and syntopic occurrence was observed in the Quezon National Park and in an abandoned coconut grove in Northern Samar.. However, based on its infrequent occurrence relative to P. cyaniventris and the habitats where it has been found, P. pirata sp. n. probably prefers more natural habitats with higher tree coverage and is possibly restricted to lower altitudes. Although the majority of specimens (Zettel collection #165) were collected on the ground, other individual workers were found foraging on leaves and twigs of small trees and bushes. Nesting habits of P pirata sp. n. are unknown.</p>Published as part of <i>Sorger, D. M. & Zettel, H., 2009, Polyrhachis (Myrma) cyaniventris F. Smith, 1858 (Hymenoptera: Formicidae) and a related new ant species from the Philippines., pp. 27-37 in Zootaxa 2174</i> on pages 33-3
The pstSCAB operon for phosphate uptake is regulated by the global regulator GlxR in Corynebacterium glutamicum
No full textPanhorst M, Sorger-Herrmann U, Wendisch VF. The pstSCAB operon for phosphate uptake is regulated by the global regulator GlxR in Corynebacterium glutamicum. Journal of Biotechnology. 2011;154(2-3):149-155
Myrmoteras (Myagroteras) williamsi Wheeler 1919
No full text<i>Myrmoteras</i> (<i>Myagroteras</i>) <i>williamsi</i> Wheeler, 1919 <p>(Figs. 11–12)</p> <p> <i>Material examined. –</i> 2 gynes and 1 male from Luzon, Laguna, Mt. Makiling, 13–18 November 1992 (label see Fig. 12) (in the first author’s collection).</p> <p> <i>Notes. –</i> Although Moffett (1985) describes workers from Negros, only sexuals (gynes and males) from Central Luzon belong to <i>M. williamsi</i> without doubt. At the Discover Life website, Alpert et al. (2010) present another record from Camarines Sur in southern Luzon; however, this record should be reconfirmed, since the first author studied males from the same province which did not fully agree with the <i>M. williamsi</i> -male from the type locality. See comparative notes of <i>M. mcarthuri</i>.</p>Published as part of <i>Zettel, Herbert & Sorger, Daniela Magdalena, 2011, New Myrmoteras Ants (Hymenoptera: Formicidae) From The Southeastern Philippines, pp. 61-67 in Raffles Bulletin of Zoology 59 (1)</i> on page 67, DOI: <a href="http://zenodo.org/record/10106842">10.5281/zenodo.10106842</a>
Odontomachus malignus
No full textOdontomachus malignus species group Diagnosis: Palp formula 4, 4. Head short, posteriorly with pair of tubercles. Mandibles long with long and sharp apical and subapical teeth. Antennae relatively short. Mesosoma not depressed. Pronotum with delicate sculpture. Petiole comparatively small and low. Diversity and distribution: This group contains only one species, O. malignus from the western Pacific area. Notes: Brown (1976) included O. malignus in the O. infandus species group, mainly because of its mandibular structures. However, the short head, short scape, and comparatively high and stout mesosoma differ considerably from both the O. infandus and the O. rixosus species group. The combination of morphological characters and the unique biology justify the erection of a separate species group.Published as part of Sorger, D. M. & Zettel, H., 2011, On the ants (Hymenoptera: Formicidae) of the Philippine Islands: V. The genus Odontomachus Latreille, 1804., pp. 141-163 in Myrmecological News 14 on page 15
Fig. 13 in New Myrmoteras Ants (Hymenoptera: Formicidae) From The Southeastern Philippines
No full textFig. 13. Map of the Philippines with distributional data of Myrmoteras taken from literature and new findings: green – Los Baños, type locality of M. williamsi and M. insulcatum; white – Baguio, additional record of M. williamsi by Moffett (1985); yellow – Dumaguete, record of "M. williamsi" by Creighton (1930) and Moffett (1985), possibly based on an undescribed species; red – M. glabrum, new species (three close localities near Manbajao); blue – M. mcarthuri, new species (two close localities near Baybay).Published as part of <i>Zettel, Herbert & Sorger, Daniela Magdalena, 2011, New Myrmoteras Ants (Hymenoptera: Formicidae) From The Southeastern Philippines, pp. 61-67 in Raffles Bulletin of Zoology 59 (1)</i> on page 65, DOI: <a href="http://zenodo.org/record/10106842">10.5281/zenodo.10106842</a>
Automated selection of brain regions for real-time fMRI brain-computer interfaces
No full textObjective. Brain-computer interfaces (BCIs) implemented with real-time functional magnetic resonance imaging (rt-fMRI) use fMRI time-courses from predefined regions of interest (ROIs). To reach best performances, localizer experiments and on-site expert supervision are required for ROI definition. To automate this step, we developed two unsupervised computational techniques based on the general linear model (GLM) and independent component analysis (ICA) of rt-fMRI data, and compared their performances on a communication BCI. Approach. 3 T fMRI data of six volunteers were re-analyzed in simulated real-time. During a localizer run, participants performed three mental tasks following visual cues. During two communication runs, a letter-spelling display guided the subjects to freely encode letters by performing one of the mental tasks with a specific timing. GLM- and ICA-based procedures were used to decode each letter, respectively using compact ROIs and whole-brain distributed spatio-temporal patterns of fMRI activity, automatically defined from subject-specific or group-level maps. Main results. Letter-decoding performances were comparable to supervised methods. In combination with a similarity-based criterion, GLM- and ICA-based approaches successfully decoded more than 80% (average) of the letters. Subject-specific maps yielded optimal performances. Significance. Automated solutions for ROI selection may help accelerating the translation of rt-fMRI BCIs from research to clinical applications
Dr. Duane M. Jackson, Morehouse College, July 2011
No full textThis video is a conversation with Dr. Duane M. Jackson. Dr. Jackson talks about his paper, "Recall and the Serial Position Effect: The Role of Primacy and Recency on Accounting Students' Performance." Jackie Daniel, AUC Woodruff Library, is the interviewer
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