Temperature dependant generationcycle for the cicindelid beetle Pentacomia egregia CHAUD. (Coleoptera, Carabidae, Cicindelinae) of the Amazon valley

Experiments with the cicindelid beetle Pentacomia egregia, living in the floodplain forests of the Amazon river, indicate the temperature to induce the habitat change of the beetles and reproductive cycle of the females

Ecological studies of the aquatic soil invertebrates in three inundation forests of Central Amazonia

From January 1971 till August 1972 ecological studies were carried out on the aquatic macroinvertebrates of the benthos community of three Central-Amazonian inundation forests. The three investigated forests were chosen according to the influence of different water types. These forests were: 1. a site with an inflow of whitewater on Ilha de Curarí, 2. a site in a mixed water area at Lago Janauarí, and 3. a site in a black water area at Rio Tarumã Mirím. The annual water level fluctuations caused similar ecological conditions concerning seasonal changes, whereas the differences between the forests depended on the inflow of the different water types. The benthos composition differs according to the inundation forest type. Stenecious species, occurring only in one of the three forests, as well as euryecious species, inhabiting the three forests, were found. In addition many species were obtained which live either in white and mixed water or in mixed and black water. The soil invertebrates adapted to the annual water level fluctuations. The most common adaptation may be seasonal dispersal, being developed as a migration or a translocation. Migrations could be detected for Campsurus notatus and Eupera simoni in white respectively mixed water. In black waters numerous species show a translocation, caused by the oxygen deficit of the deep water. A diapause stage can be assumed for Eupera simoni. This dormant stage enables the bivalve to persist in the forest during the dry period. Brasilocaenís irmleri assumingly transports its eggs by the current in optimal habitats, where it develops rapidly in 14-21 days. A dependence on the forest habitat was detected for some species of the mixed and black water. Other species of the inundation area, particularly of the white water area, are not dependent on the forest habitat. In addition to seasonal changes in the benthos composition, a vertical stratification was found. The inundation forest can be subdivided in a river or lake near part, a central part, and a terra firme near part. The intestinal content studies on the soil invertebrates and the oxygen conditions in the three inundation forests indicate the probable different breakdown of the litter in the forest of the várzea on the one hand and the igapó on the other hand. Secondary productions could be estimated for the white water area with 10-15 g/m2 and year and for the mixed water area with 90-110 g/m2 and year. In the inundation forest of the mixed water, having the highest production of the three forests, environmental factors like oxygen concentration, sedimentation etc. and trophic factors offer favourable conditions for the inhabitation of the benthos

Additions to the Neotropical species of the genus Eleusis Laporte, 1835 with description of new species (Coleoptera, Staphylinidae, Osorinae)

Das neotropische Material der Gattung Eleusis aus dem Field Museum of Natural History, Chicago, USA, wurde untersucht. Es enthielt 440 Individuen aus 18 Arten. Zusätzlich wurden noch Individuen aus Französisch-Guyana, die von J. Schmidl, Deutschland gesammelt wurden, einbezogen. Die neuen Funde von acht seltenen Arten werden aufgelistet und die Sammlungsdaten angegeben. Drei neue Arten wurden gefunden: E. mazureki spec. nov., E. dybasi spec. nov. und E. chiriquensis spec. nov. Die neuen Arten werden beschrieben und in den Bestimmungsschlüssel der neotropischen Eleusis Arten von Irmler (2017) eingefügt. Weiterhin sind Berichtigungen für die Arbeit von Irmler (2017) notwendig. Diese sind: Eleusis platysoma Irmler, 2017 muss in die Gattung Inopeplus (Salpingidae) überführt werden; der Name Eleusis fauveli Irmler, 2017 ist durch Eleusis fauveli Fagel, 1957 besetzt und wird durch Eleusis fauveliana nom. nov. ersetzt. Außerdem wird der Ort der Lagerung des Holotypus von E. rufipennis ergänzt.   Nomenklatorische Handlungen Eleusis mazureki spec. nov. – urn.lsid:zoobank.org.act:220D0CEA-75CB-4537-BA0D-D95752582D34Eleusis dybasi spec. nov. – urn.lsid:zoobank.org.act:ED409CD2-1674-4C51-94AE-A2AB6D54B066Eleusis chiriquensis spec. nov. – urn.lsid:zoobank.org.act: EA43287D-B203-42E1-8A45-C1AC74396519The Neotropical material of the genus Eleusis deposited in the Field Museum of Natural History, Chicago, USA, containing 440 specimens in 18 species, was studied. Additionally, specimens from French Guiana collected by J. Schmidl, Germany, were included. New records of eight rare species were listed and sampling details noted. Three new species were found: E. mazureki spec. nov., E. dybasi spec. nov., and E. chiriquensis spec. nov. The new species are described and integrated in the key to Neotropical Eleusis provided by Irmler (2017). Furthermore, corrections to the same paper are necessary. These are: Eleusis platysoma Irmler, 2017 is transferred to the genus Inopeplus (Salpingidae); Eleusis fauveli Irmler, 2017 is preoccupied by Eleusis fauveli Fagel, 1957 and E. fauveliana new name proposed for the former, and the location of holotype deposition of E. rufipennis is added.   Nomenclatural acts Eleusis mazureki spec. nov. – urn.lsid:zoobank.org.act:220D0CEA-75CB-4537-BA0D-D95752582D34Eleusis dybasi spec. nov. – urn.lsid:zoobank.org.act:ED409CD2-1674-4C51-94AE-A2AB6D54B066Eleusis chiriquensis spec. nov. – urn.lsid:zoobank.org.act: EA43287D-B203-42E1-8A45-C1AC74396519 &nbsp

The Neotropical species of the genus Lithocharodes Sharp, 1876 (Coleoptera: Staphylinidae: Staphylininae: Xantholinini)

Die neotropischen Arten der Gattung Lithocharodes wurden bearbeitet. Insgesamt wurden 26 neue Arten gefunden. Diese sind: L. aculeata spec. nov., L. ashei spec. nov., L. bierigi spec. nov., L. bicornis spec. nov., L. boliviana spec. nov., L. brooksi spec. nov., L. compacta spec. nov., L. curtipennis spec. nov., L. denticulata spec. nov., L. dubiosa spec. nov., L. ecuadoriensis spec. nov., L. elongata spec. nov., L. hanagarthi spec. nov., L. karinae spec. nov., L. katharinae spec. nov., L. lescheni spec. nov., L. nigerrima spec. nov. L. nigrita spec. nov., L. obscura spec. nov., L. pampana spec. nov., L. peruana spec. nov., L. silvicola spec. nov., L. somoleptoides spec. nov., L. surinamensis spec. nov., L. triangula spec. nov., und L. verhaaghi spec. nov. Die folgenden Arten, die unter der Gattung Lithocharodes beschrieben wurden, wurden zur Gattung Somoleptus Sharp, 1885 gestellt: S. cavicola (Blackwelder, 1943) (neue Kombination) und S. strigulata (Blackwelder 1943) (neue Kombination). Folgende vier Arten, die unter der Gattung Somoleptus beschrieben wurden, gehören in die Gattung Lithocharodes: L. bicolor (Sharp, 1885) (neue Kombination); S. gracilis Sharp, 1885 ist konspezifisch mit L. bicolor (Sharp, 1885) (neues Synonym); L. clavicornis (Erichson, 1839) beschrieben als Leptacinus clavicornis und von Sharp (1885) zu Somoleptus gestellt, gehört ebenfalls in die Gattung Lithocharodes (neue Kombination); L. elegans (Sharp, 1885) (neue Kombination); L. gracilis, L. rambouseki und L. cameroni (neue Synonyme) sind konspezifisch mit L. fusciventris Sharp, 1885. Neue Funde von den Westindischen Inseln und Zentralamerika werden für L. floridanus (LeConte, 1880) und L. nigripennis (LeConte, 1863) aufgeführt. Nomenklatorische Handlungen Lithocharodes aculeata spec. nov. – urn:lsid:zoobank.org:act:A18023B2-0E8E-4094-A5ED-3DCF051C0185Lithocharodes ashei spec. nov. – urn:lsid:zoobank.org:act:3464349F-B225-4FFB-A2DA-A9F5F286E872Lithocharodes bierigi spec. nov. – urn:lsid:zoobank.org:act:40819238-8854-4AA3-8080-FEA8778C77CELithocharodes boliviana spec. nov. – urn:lsid:zoobank.org:act:352DDE6B-383B-45B8-90B1-1D1689422F37Lithocharodes brooksi spec. nov. – urn:lsid:zoobank.org:act:3903CAF2-1B67-4B6A-9979-72E6336CA165Lithocharodes compacta spec. nov. – urn:lsid:zoobank.org:act:3253E356-C82F-425A-B034-8AD4AFFB91F7Lithocharodes curtipennis spec. nov. – urn:lsid:zoobank.org:act:49C417E3-A17C-4A28-9D32-950C09CDBD1DLithocharodes denticulata spec. nov. – urn:lsid:zoobank.org:act:9B194FB8-EFFE-4301-9681-174E24B19557Lithocharodes dubiosa spec. nov. – urn:lsid:zoobank.org:act:A9BFC64A-5AEA-499E-ABB9-94BE1F8F05B6Lithocharodes ecuadoriensis spec. nov. – urn:lsid:zoobank.org:act:D5751DC8-DA8F-4F7E-A57E-3FCB3BE8A990Lithocharodes elongata spec. nov. – urn:lsid:zoobank.org:act:E056AF32-00F8-4072-97F7-7FA40129C9BALithocharodes hanagarthi spec. nov. – urn:lsid:zoobank.org:act:CB47DB88-4D42-4FC9-AF39-A5ED1D1758A3Lithocharodes karinae spec. nov. – urn:lsid:zoobank.org:act:067347B8-B4E1-4B17-96D3-9ADBA83D340FLithocharodes katharinae spec. nov. – urn:lsid:zoobank.org:act:B16D6F77-971F-4D61-9934-BAB22A68A1A9Lithocharodes lescheni spec. nov. – urn:lsid:zoobank.org:act:56C738F3-B7E8-48CD-8D89-549249716A46Lithocharodes nigerrima spec. nov. – urn:lsid:zoobank.org:act:AC1C7A9C-0F22-4211-B88E-F95ACF767B38Lithocharodes nigrita spec. nov. – urn:lsid:zoobank.org:act:51DB16D4-FB55-4338-B12D-AFD4290322C0Lithocharodes obscura spec. nov. – urn:lsid:zoobank.org:act:F520ED25-EB0D-4CFB-AD03-F8322592C96CLithocharodes pampana spec. nov. – urn:lsid:zoobank.org:act:5EFDF07C-A8EE-42CB-B1E8-901599251C83Lithocharodes peruana spec. nov. – urn:lsid:zoobank.org:act:44E3E16F-6262-4A6B-8BF1-CE656372382ALithocharodes silvicola spec. nov. – urn:lsid:zoobank.org:act:307A352E-8017-4653-AB6C-530BB6694978Lithocharodes somoleptoides spec. nov. – urn:lsid:zoobank.org:act:0FBFC297-E285-4637-853C-2DC467FE2E1CLithocharodes surinamensis spec. nov. – urn:lsid:zoobank.org:act:AF3EE982-3573-4991-9AEF-A34345F2BA88Lithocharodes triangula spec. nov. – urn:lsid:zoobank.org:act:8BCFB5FF-F6A3-4F93-A1CE-033F3898DE6BLithocharodes verhaaghi spec. nov. – urn:lsid:zoobank.org:act:37168761-B2E0-4845-94ED-83B48C45CF71The Neotropical species of the genus Lithocharodes were studied. A total of 26 new species were found. These are: L. aculeata spec. nov., L. ashei spec. nov., L. bierigi spec. nov., L. bicornis spec. nov., L. boliviana spec. nov., L. brooksi spec. nov., L. compacta spec. nov., L. curtipennis spec. nov., L. denticulata spec. nov., L. dubiosa spec. nov., L. ecuadoriensis spec. nov., L. elongata spec. nov., L. hanagarthi spec. nov., L. karinae spec. nov., L. katharinae spec. nov., L. lescheni spec. nov., L. nigerrima spec. nov., L. nigrita spec. nov., L. obscura spec. nov., L. pampana spec. nov., L. peruana spec. nov., L. silvicola spec. nov., L. somoleptoides spec. nov., L. surinamensis spec. nov., L. triangula spec. nov., and L. verhaaghi spec. nov. The following species described under Lithocharodes were transferred to the genus Somoleptus Sharp, 1885: S. cavicola (Blackwelder, 1943) (comb. nov.) and S. strigulata (Blackwelder 1943) (comb. nov.). The following four species described under the genus Somoleptus were transferred to Lithocharodes: L. bicolor (Sharp, 1885) (new combination) and S. gracilis Sharp, 1885 (new synonymy), which is conspecific with L. bicolor; L. clavicornis (Erichson, 1839) described as Leptacinus clavicornis and transferred to Somoleptus by Sharp (1885) (new combination); L. elegans (Sharp, 1885) (new combination); L. gracilis, L. rambouseki, L. cameroni (new synonymies) are conspecific with L. fusciventris Sharp, 1885. New records from the West Indies and Central America were given for L. floridanus (LeConte, 1880) and L. nigripennis (LeConte, 1863). Lectotypes were designated for L. fusciventris, L. gracilis, L. fuscula, and L. spinigera. Nomenclatural acts Lithocharodes aculeata spec. nov. – urn:lsid:zoobank.org:act:A18023B2-0E8E-4094-A5ED-3DCF051C0185Lithocharodes ashei spec. nov. – urn:lsid:zoobank.org:act:3464349F-B225-4FFB-A2DA-A9F5F286E872Lithocharodes bierigi spec. nov. – urn:lsid:zoobank.org:act:40819238-8854-4AA3-8080-FEA8778C77CELithocharodes boliviana spec. nov. – urn:lsid:zoobank.org:act:352DDE6B-383B-45B8-90B1-1D1689422F37Lithocharodes brooksi spec. nov. – urn:lsid:zoobank.org:act:3903CAF2-1B67-4B6A-9979-72E6336CA165Lithocharodes compacta spec. nov. – urn:lsid:zoobank.org:act:3253E356-C82F-425A-B034-8AD4AFFB91F7Lithocharodes curtipennis spec. nov. – urn:lsid:zoobank.org:act:49C417E3-A17C-4A28-9D32-950C09CDBD1DLithocharodes denticulata spec. nov. – urn:lsid:zoobank.org:act:9B194FB8-EFFE-4301-9681-174E24B19557Lithocharodes dubiosa spec. nov. – urn:lsid:zoobank.org:act:A9BFC64A-5AEA-499E-ABB9-94BE1F8F05B6Lithocharodes ecuadoriensis spec. nov. – urn:lsid:zoobank.org:act:D5751DC8-DA8F-4F7E-A57E-3FCB3BE8A990Lithocharodes elongata spec. nov. – urn:lsid:zoobank.org:act:E056AF32-00F8-4072-97F7-7FA40129C9BALithocharodes hanagarthi spec. nov. – urn:lsid:zoobank.org:act:CB47DB88-4D42-4FC9-AF39-A5ED1D1758A3Lithocharodes karinae spec. nov. – urn:lsid:zoobank.org:act:067347B8-B4E1-4B17-96D3-9ADBA83D340FLithocharodes katharinae spec. nov. – urn:lsid:zoobank.org:act:B16D6F77-971F-4D61-9934-BAB22A68A1A9Lithocharodes lescheni spec. nov. – urn:lsid:zoobank.org:act:56C738F3-B7E8-48CD-8D89-549249716A46Lithocharodes nigerrima spec. nov. – urn:lsid:zoobank.org:act:AC1C7A9C-0F22-4211-B88E-F95ACF767B38Lithocharodes nigrita spec. nov. – urn:lsid:zoobank.org:act:51DB16D4-FB55-4338-B12D-AFD4290322C0Lithocharodes obscura spec. nov. – urn:lsid:zoobank.org:act:F520ED25-EB0D-4CFB-AD03-F8322592C96CLithocharodes pampana spec. nov. – urn:lsid:zoobank.org:act:5EFDF07C-A8EE-42CB-B1E8-901599251C83Lithocharodes peruana spec. nov. – urn:lsid:zoobank.org:act:44E3E16F-6262-4A6B-8BF1-CE656372382ALithocharodes silvicola spec. nov. – urn:lsid:zoobank.org:act:307A352E-8017-4653-AB6C-530BB6694978Lithocharodes somoleptoides spec. nov. – urn:lsid:zoobank.org:act:0FBFC297-E285-4637-853C-2DC467FE2E1CLithocharodes surinamensis spec. nov. – urn:lsid:zoobank.org:act:AF3EE982-3573-4991-9AEF-A34345F2BA88Lithocharodes triangula spec. nov. – urn:lsid:zoobank.org:act:8BCFB5FF-F6A3-4F93-A1CE-033F3898DE6BLithocharodes verhaaghi spec. nov. – urn:lsid:zoobank.org:act:37168761-B2E0-4845-94ED-83B48C45CF71 &nbsp

Population-ecology and migration of Dero multibranchiata STIEREN, 1892 (Naididae, Oligochaeta) in the Central Amazon inundation forest

The influences of different substances on the population dynamics of the naidid Dero multibranchiata of the Central Amazonian inundated forests have been investigated. The most important factors are the kind of diet and the oxygen concentration. The speed of migration of the naidid species has been determined, which depends on the attractivity of leaf powder

Raum- Zeit-Muster von Regenwurmpopulationen bei der Umstellung zum ökologischen Landbau

The earthworm communities on agricultural fields of “Hof Ritzerau” (Germany, Schleswig-Holstein) have been investigated from 2001 to 2005 on 85 sampling sites. The management of agricultural fields changed to organic farming during the period. Both Aporrectodea caliginosa and Lumbricus rubellus correlated with organic content of the soil and rainfall respectively. Only Lumbricus terrestris responded on the change from conventional to organic farming

Population-dynamic and physiological adaptation of Pentacomia egregia CHAUD. (Col., Cicindelidae) to the Amazonian inundation forest

The Cicindelidae Pentacomia egregia CHAUD. shows an interesting population-dynamic and physiological adaptation to life in the inundation forest. The larval development lies in the dry season, whereas the imago live on trees in the high water season. The beetle orients itself skototactically on the water when at a height of 16° above the water surface a black area is offered to it and reacts positively phototactically on dry land

The Neotropical species of the genera Pseudespeson Lecoq, 1994 and Espeson Schaufuss, 1882 (Coleoptera: Staphylinidae: Osoriinae).

Eine Revision der neotropischen Arten der Gattungen Pseudespeson Lecoq, 1994 und Espeson Schaufuss, 1882 wurde durchgeführt. Während für die Gattung Pseudespeson Lecoq, 1994 keine neue Art gefunden werden konnte, wurden für die Gattung Espeson Schaufuss, 1882 sechs neue Arten beschrieben. Diese sind: E. adisi n. sp., E. dybasi n. sp., E. franiae n. sp., E. hermani n. sp., E. pecki n. sp., and E. simplex n. sp. Eine Art, E. lenkoi Scheerpeltz, 1970, wurde als neues Synonym zu E. moratus Schaufuss, 1882 gestellt. Daher sind insgesamt zurzeit 13 Arten der Gattung Espeson Schaufuss, 1882 vom Festland Zentral- und Südamerikas und von den Westindischen Inseln bekannt.StichwörterOsoriinae, Espeson, Pseudespeson, new species, Neotropics.Nomenklatorische Handlungenadisi Irmler, 2012 (Espeson), spec. nov.dybasi Irmler, 2012 (Espeson), spec. nov.franiae Irmler, 2012 (Espeson), spec. nov.hermani Irmler, 2012 (Espeson), spec. nov.lenkoi Scheerpeltz, 1969 (Espeson), syn. nov. of Espeson moratus Schaufuss, 1882pecki Irmler, 2012 (Espeson), spec. nov.simplex Irmler, 2012 (Espeson), spec. nov.A review of the Neotropical species of the genera Pseudespeson Lecoq, 1994 and Espeson Schaufuss, 1882 has been performed. Whereas no new species could be added to the genus Pseudespeson Lecoq, 1994, six new species were found in the genus Espeson Schaufuss, 1882. These are: E. adisi n. sp., E. dybasi n. sp., E. franiae n. sp., E. hermani n. sp., E. pecki n. sp., and E. simplex n. sp. One species, E. lenkoi Scheerpeltz, 1970, is synonymised with E. moratus Schaufuss, 1882. Thus, in total, 2 species of Pseudespeson Lecoq, 1994, and 13 species of Espeson Schaufuss, 1882 are actually known from Central and South America including the West Indies.KeywordsOsoriinae, Espeson, Pseudespeson, new species, Neotropics.Nomenclatural Actsadisi Irmler, 2012 (Espeson), spec. nov.dybasi Irmler, 2012 (Espeson), spec. nov.franiae Irmler, 2012 (Espeson), spec. nov.hermani Irmler, 2012 (Espeson), spec. nov.lenkoi Scheerpeltz, 1969 (Espeson), syn. nov. of Espeson moratus Schaufuss, 1882pecki Irmler, 2012 (Espeson), spec. nov.simplex Irmler, 2012 (Espeson), spec. nov

Two New Species of the Genus Thoracophorus

The new species Thoracophorus venezuelanus and T. silvaticus are described. The ecological information from labels and that produced by more detailed studies in Central Amazonia indicate that tree canopies and tree trunks are main habitats of Thoracophorus species, and that many species might be associated with ants or termites

The structure of the carabid- and staphylinid-community in Central Amazonian inundation forests

In drei verschiedenen zentralamazonischen Überschwemmungswäldern (Várzeawälder im Weißwasser- und Mischwassergebiet und Igapó im Schwarzwassergebiet) wurde in einem "transect" die epigäische Carabiden- und Staphylinidenfauna untersucht. Als Sammelmethodik wurden sowohl Formalinfallen aufgestellt, als auch die direkte Untersuchung in einem Quadratrahmen (33 x 33 cm) durchgeführt. Insgesamt wurden 127 Carabiden- und 192 Staphylinidenarten erbeutet. Keine der Arten war in allen drei Überschwemmungswäldern dominant und nur ein geringer Prozentsatz der Arten war in allen drei Überschwemmungswäldern vertreten. Die meisten untersuchten Arten zeigten ein deutliches Maximum im zeitlichen und vertikalen Auftreten. Stabile Lebensgemeinschaften scheinen zu Anfang der emersen Phase noch nicht zu bestehen. Sie werden erst im Laufe der emersen Phase aufgebaut und gliedern sich in eine Gemeinschaft der oberen und eine der unteren Bereiche. Beide Gemeinschaften werden mit der erneuten Überschwemmung anscheinend katastrophenähnlich zerstört. Die Artdiversität zeigt im Gegensatz zur Individuendichte keinen charakteristischen jahresperiodischen Verlauf. Dagegen ist eine deutliche vertikale Gliederung der Artdiversität in den beiden Várzeawäldern zu erkennen. Hohe Diversitätswerte erscheinen in den oberen und unteren Bereichen der Várzeawälder, was auf den Oecotoncharakter dieser Gebiete zurückgeführt wird. Die Artdiversität und die "species eveness" scheint von den Várzeawäldern zum Igapó geringfügig anzusteigen (statistisch nur in einem Fall nachweisbar). Dieser Diversitätsgradient wurde mit der unterschiedlichen Stabilität und dem Stoffhaushalt der drei Überschwemmungswälder erklärt