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Ants
Odontomachus Latreille, 1804
EOL Text
Odontomachus Latreille HNS
Medium-sized or large ants closely resembling Anochetus HNS .
In the worker, however, the antennal foveae are confluent, being united by a depression of the front behind the frontal carinae, and there is a welt or swelling which extends out obliquely from the eye and separates the antennal fossa from a depression, equally oblique and very pronounced on the side of the head. Both the apical and subapical teeth of the mandibles acute, the preapical truncated or acute, according to the species; the inner border of the mandibles usually minutely and serrately toothed. Maxillary palpi 4-jointed, labial palpi 3-jointed. Eyes always well developed. Petiole surmounted by a conical node usually terminating in a spine which is inclined backward.
Female winged, with large eyes and ocelli, but in other respects like the worker.
Male with the head of the ordinary shape and with very large eyes and ocelli; mandibles very small; maxillary palpi 6-jointed. Antennae as in Anochetus HNS . Petiole ordinarily with a pointed or conical node, but without terminal spine. Postpetiole separated from the succeeding segment by a rather pronounced constriction. Pygidium terminating in a spine. Claws simple.
Odontomachus HNS is a tropicopolitan genus with apparently two centers of distribution, one in the Neotropical, the other in the Indonesian and Australian Regions (Map 17). One species, O. haematoda HNS , represented by numerous subspecies and varieties, is found in all the wanner regions of the globe, even in the Southern United States, though not in the Mediterranean Region. The species all nest in small colonies in the ground or in rotten wood and the workers of some of the species are very aggressive and sting severely. They are able to leap backward a distance of several inches by suddenly closing their divaricated mandibles against any hard body that happens to be in the environment. The genus is poorly represented in Africa.
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Rights holder/Author | No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation. |
Source | http://treatment.plazi.org/id/A35571EDBC3108DF8C7C77C1F73C366F |
Genus 1. ODONTOMACHUS HNS .
Formica HNS , pt., Linn. Syst. Nat. i. 965 (1766).
Odontomachus HNS , Latr. Gen. Crust, et Ins. iv. 128 (1804).
License | Public Domain |
Rights holder/Author | No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation. |
Source | http://treatment.plazi.org/id/8217231B855CA8ED3EE4A7F9304F30A8 |
Odontomachus sp. 1 HNS (Figs. 21 - 23, 46)
Material examined (16 workers, 2 gynes; CZW, USC): Luzon: C a ma r i n e s N o r t e: Mt. Labo – Mt. Bayabas area, 17.-18.III.2004, leg. H. Zettel & C.V. Pangantihon (382), 1 ∑. S Daet, Bicol National Park, Basud, Nalisan, 13.-14.III.2003, leg. H. Zettel, L. S. Vichozo & C. V. Pangantihon, 1 ∑, 26.II.2004, leg. H. Zettel & C. V. Pangantihon(376), 2 ∑∑, 13.III.2006, leg. H. Zettel, R. Gille & C. V. Pangantihon (446), 6 ∑∑. C a m a r i n e s S u r: Lupi, Alanao, Bahi River,14.XI.1999, leg. H. Zettel (205), 1 ∑. Sooc, 10.-12.III.2000, various local collectors (246), 1 ♀, 29.I.-10.II.2002, various local collectors (305), 1 ♀. Lupi, Sooc, Telecom, 31.III.2003, leg. C. V. Pangantihon, 2 ∑∑. Between Lupi, Sooc, Telecom and Sipocot, Tigman, 22.II. 2004, leg. C. V. Pangantihon (P42+43), 3 ∑∑.
Description of worker: Measurements: worker with smallest HW: CI 77, HL 2.88, HW 2.23, MdL 1.67, MdI 58, MsL 3.80, PnW 1.17, PtH 1.21, PtL 1.22, PtW 0.42, SI 133, SL 2.97, TL 12.38; worker with largest HW: CI 70, HL 3.30, HW 2.30, MdI 59, MdL 1.95, MsL 4.17, SI 143, SL 3.28, PnW 1.37, PtH 1.19, PtL 1.32, PtW 0.50, TL 14.13.
Structures: Head striate, striation not reaching occipital margin, fading out slightly before margin; striation left and right of median furrow weak. Striation on pronotum longitudinally oriented, closed oval circles may be visible in dorsal view (sculpture strongly resembling O. infandus HNS ). Mesopleuron striate, although striation in the centre may be very weak. Petiole variable, rather short, dorsal surface usually straight, with short and simple petiolar spine.
Pilosity: Fine white, loose, semi-appressed pubescence on entire body, distance between hairs approximately their length. No setae on tergite 1, few setae on tergite 2, increasing in number and length towards apex of abdomen.
Colour: Dark brown, head usually lighter (towards medium brown) than rest, appendages light brown to yellowish.
Description of gyne: Measurements: gyne with smallest HW: CI 73, HL 3.33, HW 2.42, MdL 1.97, MdI 59, MsL 4.67, PnW 1.82, PtH 1.56, PtL 1.71, PtW 0.75, SI 130, SL 3.15, TL 15.25; gyne with largest HW: CI 76, HL 3.43, HW 2.60, MdL 1.93, MdI 56, MsL 4.80, PnW 1.78, PtH 1.64, PtL 1.83, PtW 0.78, SI 126, SL 3.28, TL 15.88.
Compared with O. infandus HNS gyne, striation of head posteriorly reduced. Compared with O. sp. 1 worker, striation of mesopleuron strongly reduced, in larger gyne faint, in smaller gyne absent except for short striation in front of meso-metapleural suture.
Colour: Head, mesonotum, scutellum, metanotum, and mesopleuron light brown, contrasting with other, dark brown body parts. Petiole and gaster slightly lighter.
Distribution (Fig. 46): Endemic to the Philippines: only in southern Luzon, in a small area in Camarines Norte and Camarines Sur.
Habitats: This species is only known from dipterocarp forests, although some samples are from strongly degraded forests.
Notes: Camarines Sur is the only province with four recorded Odontomachus HNS species, i.e., O. infandus HNS , O. banksi HNS , O. simillimus HNS , and O. sp. 1. The here treated form, which is represented by rather few individuals from a relatively small area, shares some characters with O. infandus HNS and O. banksi HNS , but can be clearly distinguished from both. It is distinguished from O. infandus HNS by light coloured and posteromedially not striate head and a straight petiolar spine; from O. banksi HNS by much more developed striation on head, longitudinal loops on pronotum, and sparse pilosity; the slightly reduced striation on medial mesopleuron and the light brown gaster separates this form from both species. Although there are several similarities with O. alius HNS sp.n. , and despite zoogeographical considerations (presence of O. alius HNS sp.n. on Catanduanes), we do not assign this Camarines population to that species, mainly because of the strikingly different shape of the petiole.
License | Public Domain |
Rights holder/Author | No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation. |
Source | http://treatment.plazi.org/id/7340F4D29C6EAC08E91602EA1B8F3020 |
4 th, Odontomachus HNS ,
differs from the last in the one abdominal pedicle ending superiorly in a spine; antennae very slender and filiform in the neuters; head oblong, much notched posteriorly jaws long, narrow, parallel, three toothed.
License | Public Domain |
Rights holder/Author | No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation. |
Source | http://treatment.plazi.org/id/1BF746EF05359254FA25566408DD6925 |
sp. alw-01.
Alto Paraguay, Caaguazú , Central, Cordillera, Itapúa (ALWC, IFML, INBP, MZSP).
- Wild, A. L. (2007): A catalogue of the ants of Paraguay (Hymenoptera: Formicidae). Zootaxa 1622, 1-55: 39-39, URL:http://www.antbase.org/ants/publications/21367/21367.pdf
License | Public Domain |
Rights holder/Author | No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation. |
Source | http://treatment.plazi.org/id/CB97B3A9AB21B67CB4D70586B890F8EF |
Odontomachus Latreille HNS , 1804
(Figs. 1, 8a-e)
Males winged. Antennal scrobe absent. Mandible reduced. Basal cavity of mandible extending to its front face and visible in full-face view. Notauli never impressed on mesoscutum. Mesepimeron bearing distinct (epimeral) lobe posterodorsally, lobe covering mesothoracic spiracle and seeming to form isolated plate. Dorsolateral corner of petiole in anterior view not projecting. Dorsal margin of petiole in anterior view more or less conical, with a narrowly rounded or pointed apex. Apical margin of abdominal tergum VIII projecting into sharp spine. Jugal lobe of hind wing present. Each middle and hind tibia with two spurs. Claws simple, never multidentate to pectinate.
Remarks. Two species are known in the Malagasy region. The males of both species are yellow to yellowish-brown. In the single species from the Seychelles ( O. simillimus HNS ) the males are blackish. Males belonging to this genus are often similar to those in Anochetus HNS and Pachycondyla HNS . Characteristics separating this genus from Anochetus HNS are noted in the Anochetus HNS section. Characters separating it from Pachycondyla HNS are: 1) petiolar apex more or less conical; 2) hind wing having a jugal lobe; 3) absence of notauli on the mesoscutum; and 4) a yellowish (rarely blackish) body color.
- Yoshimura, M., Fisher, B. L. (2007): A revision of male ants of the Malagasy region (Hymenoptera: Formicidae): Key to subfamilies and treatment of the genera of Ponerinae. Zootaxa 1654, 21-40: 34-34, URL:http://www.mapress.com/zootaxa/2007f/zt01654p040.pdf
License | Public Domain |
Rights holder/Author | No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation. |
Source | http://treatment.plazi.org/id/C80C53A57B0BE289CC3AA5C3B5A7184B |
Medium-sized or large ants closely resembling Anochetus .
In the worker, however, the antennal foveae are confluent, being united by a depression of the front behind the frontal carinae, and there is a welt or swelling which extends out obliquely from the eye and separates the antennal fossa from a depression, equally oblique and very pronounced on the side of the head. Both the apical and subapical teeth of the mandibles acute, the preapical truncated or acute, according to the species; the inner border of the mandibles usually minutely and serrately toothed. Maxillary palpi 4-jointed, labial palpi 3-jointed. Eyes always well developed. Petiole surmounted by a conical node usually terminating in a spine which is inclined backward.
Female winged, with large eyes and ocelli, but in other respects like the worker.
Male with the head of the ordinary shape and with very large eyes and ocelli; mandibles very small; maxillary palpi 6-jointed. Antennae as in Anochetus . Petiole ordinarily with a pointed or conical node, but without terminal spine. Postpetiole separated from the succeeding segment by a rather pronounced constriction. Pygidium terminating in a spine. Claws simple.
Odontomachus is a tropicopolitan genus with apparently two centers of distribution, one in the Neotropical, the other in the Indonesian and Australian Regions (Map 17). One species, O. haematoda , represented by numerous subspecies and varieties, is found in all the wanner regions of the globe, even in the Southern United States, though not in the Mediterranean Region. The species all nest in small colonies in the ground or in rotten wood and the workers of some of the species are very aggressive and sting severely. They are able to leap backward a distance of several inches by suddenly closing their divaricated mandibles against any hard body that happens to be in the environment. The genus is poorly represented in Africa.
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Rights holder/Author | No known copyright restrictions |
Source | http://plazi.org:8080/dspace/handle/10199/17097 |
(Figs. 1, 8a-e)
Males winged. Antennal scrobe absent. Mandible reduced. Basal cavity of mandible extending to its front face and visible in full-face view. Notauli never impressed on mesoscutum. Mesepimeron bearing distinct (epimeral) lobe posterodorsally, lobe covering mesothoracic spiracle and seeming to form isolated plate. Dorsolateral corner of petiole in anterior view not projecting. Dorsal margin of petiole in anterior view more or less conical, with a narrowly rounded or pointed apex. Apical margin of abdominal tergum VIII projecting into sharp spine. Jugal lobe of hind wing present. Each middle and hind tibia with two spurs. Claws simple, never multidentate to pectinate.
Remarks. Two species are known in the Malagasy region. The males of both species are yellow to yellowish-brown. In the single species from the Seychelles ( O. simillimus ) the males are blackish. Males belonging to this genus are often similar to those in Anochetus and Pachycondyla . Characteristics separating this genus from Anochetus are noted in the Anochetus section. Characters separating it from Pachycondyla are: 1) petiolar apex more or less conical; 2) hind wing having a jugal lobe; 3) absence of notauli on the mesoscutum; and 4) a yellowish (rarely blackish) body color.
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Rights holder/Author | No known copyright restrictions |
Source | http://www.mapress.com/zootaxa/2007f/zt01654p040.pdf |
Alto Paraguay, Caaguazú , Central, Cordillera, Itapúa (ALWC, IFML, INBP, MZSP).
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Source | http://www.antbase.org/ants/publications/21367/21367.pdf |
Die Fuehlergruben vereinigen sich auf der Stirne. Das 2. Geisselglied ist laenger als das erste. Die Scheitel furche ist vorhanden. Der schiefe Eindruck beiderseits hinter den Augen deutlich. Das Stielchen traegt oben einen Kegel, welcher in einen Dorn endet.
Ich enthalte mich der Beschreibung von nur neu scheinenden Formen, indem ich, obschon im Besitze mancher Typen, doch nicht im Stande bin, mir eine klare Uebersicht ueber die beschriebenen Arten zu verschaffen; es scheint mir, dass hier die Speciesfabrikation zu sehr Platz gegriffen hat und eine bedeutende Reduction noethig sein wird.
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Source | http://antbase.org/ants/publications/4445/4445.pdf |