Arachnida at "Reserva Ducke", Central Amazonia/Brazil

The class Arachnida contains 11 recent orders: Acari, Amblypygi, Araneae, Opiliones, Palpigradi, Pseudoscorpiones, Ricinulei, Schizomida, Scorpiones, Solifugae and Uropygi (Thelyphonida). In total, >570 families, >9165 genera and >93455 species are known world-wide. More than 136 families, >482 genera and >1547 described species occur in Amazonia. Data show, that almost one-fourth of the families presently known in the Arachnida and about 2% of the worlds described species are represented in Amazonia. In the forest reserve 'Reserva Ducke' near Manaus, the Acari-Oribatida represent 45 families, 72 genera and 35 described species, the Aranea 30 families, 143 genera and 295 described species, the Opiliones 5 families, 7 genera and 8 decribed species, the Scorpiones 2 families, 4 genera and 5 described species, the Pseudoscorpiones 6 families, 11 genera, and 15 described species, the Schizomida, 1 family, 2 genera and 2 described species, and the Amblypygi, Palpigradi, Solifugae and Uropygi (Thelyphonida) one species each. Most names are liste

Diversity and distribution of oribatid mites (Acari:Oribatida) in a lowland rain forest in Peru and in several environments of the Brazilians states of Amazonas, Rondônia, Roraima and Pará

We are summarizing the current state of knowledge of the diversity and distribution of oribatid mites in 26 environments in northern Brazil and of a rain forest in Peru. The published studies were mostly concentrated in Central Amazon. Only one report is a result from an agricultural polyculture. We are providing the first lists of species for savannas and for the Brazilian states of Roraima and Pará. Up to date, 146 species are definitively identified from a total of 444 taxa with 188 known genera, reinforcing the notion of a rich biodiverse area. The high number of 298 non-described species (morphospecies) clearly shows the inadequacy of the current taxonomic knowledge for the region. Most of the registers are from forest environments. In the soil from primary forests, we registered the highest diversity (54-155 species/morphospecies). Eighty-nine species were unique to primary forests, followed by 34 for savannas, 32 in trees, 10 in "igapó", 4 in caatinga, 3 in secondary forests, two in "varzea" and one in polyculture. Twenty genera were the most speciose. The species with the largest home ranges were Rostrozetes foveolatus, Scheloribates sp. A, and Galumna sp. A. Our numbers reflect the lack of taxonomists and show that the taxonomic knowledge must be improved for the region or we will continue to work with taxonomic resolution of Order or Family and a high percentage of morphospecies, which will probably be appropriate to the question being asked in each study, but not for a comparison among environments

Hermanniidae

Hermanniidae Vorkommen: Eine Art, Hermannia gibba (C. L. KOCH,1840), regelmaessig, aber nicht häufig in der Bodenstreu.Published as part of Beck, L. & Woas, S., 1991, Die Oribatiden-Arten (Acari) eines suedwestdeutschen Buchenwaldes I., pp. 37-82 in carolinea 49 on page 4

Carabodes coriaceus C. L. Koch 1836

<p>Carabodes coriaceus C. L. Koch, 1836</p> <p>Bestimmung nach SELLNICK & FORSSLUND (1953:381)</p> <p>Länge 575-695 µm, Länge:Breite 1,48-1,58 (5 Ex.)</p> <p>Belegmaterial: Stadtwald Ettlingen, Moderbuchenwald, Bodenstreu, F-Schicht, 1/1978, 10 Ex., LNK A 0338; 1/1982, 7 Ex., LNK A 0339.</p>Published as part of <i>Beck, L. & Woas, S., 1991, Die Oribatiden-Arten (Acari) eines suedwestdeutschen Buchenwaldes I., pp. 37-82 in carolinea 49</i> on page 5

Achipteriidae

<p>Achipteriidae</p> <p>Vorkommen: Zwei Arten,</p> <p>Achipteria coleoptrata (LlNNE, 1758), regelmäßig im gesamten Streuprofil, auch in der L-Schicht,</p> <p>Parachipteria punctata (NlCOLET, 1855), in Moos auf Holz.</p>Published as part of <i>Beck, L. & Woas, S., 1991, Die Oribatiden-Arten (Acari) eines suedwestdeutschen Buchenwaldes I., pp. 37-82 in carolinea 49</i> on page 7

Liebstadia humerata

<p>Liebstadia humerata SELLNICK, 1928,</p> <p>einigermaßen regelmäßig, aber nicht sehr zahlreich in den oberen Schichten der Bodenstreu, vor allem aber in moderndem Holz, auf Bäumen und in Astlöchern,</p>Published as part of <i>Beck, L. & Woas, S., 1991, Die Oribatiden-Arten (Acari) eines suedwestdeutschen Buchenwaldes I., pp. 37-82 in carolinea 49</i> on page 6

Malaconothridae

Malaconothridae Vorkommen: Eine Art, Malaconothrus gracilis VAN DER HAMMEN, 1952, unregelmäßig und spärlich in der Bodenstreu.Published as part of Beck, L. & Woas, S., 1991, Die Oribatiden-Arten (Acari) eines suedwestdeutschen Buchenwaldes I., pp. 37-82 in carolinea 49 on page 4

Eniochthonius minutissimus

Eniochthonius minutissimus (Berlese, 1904) Hypochthoniella pallidula (C. L. KOCH, 1836), - SELLNICK (1928), WILLMANN (1931) Bestimmung nach SELLNICK (1928:22, 1960:79), WILLMANN (1931:100) Länge 350-400 µm, Länge:Breite 1,80-2,20 (10 Ex.) Belegmaterial: Stadtwald Ettlingen, Moderbuchenwald, Bodenstreu, F-Schicht, VI, VIII & IX/1982, 3 Ex., LNK A0142; Bodenstreu, H-Schicht, IV/1980, V/1981 & III/1984, 3 Ex., LNK A0143; Bodenstreu, Barberfalle, X/1982, VII/1985, VI/1986, 6 Ex., LNK A0147.Published as part of Beck, L. & Woas, S., 1991, Die Oribatiden-Arten (Acari) eines suedwestdeutschen Buchenwaldes I., pp. 37-82 in carolinea 49 on page 4

Cepheus dentatus

Cepheus dentatus (Michael, 1888) Bestimmung nach WILLMANN (1931:146), SELLNICK (1960:94) Länge 810-905 µm, Länge:Breite 1,38-1,45 (7 Ex.); damit sind unsere Tiere deutlich größer als in der Literatur angegeben. Belegmaterial: Stadtwald Ettlingen, Moderbuchenwald, Bodenstreu, F-Schicht, X/1980, 4 Ex., LNK A0310; II/1981, 3 Ex., LNK A0311.Published as part of Beck, L. & Woas, S., 1991, Die Oribatiden-Arten (Acari) eines suedwestdeutschen Buchenwaldes I., pp. 37-82 in carolinea 49 on page 4

Paraliochthonius spec.

[Paraliochthonius spec. Stadtwald Ettlingen, Moderbuchenwald, Bodenstreu]Published as part of Beck, L. & Woas, S., 1991, Die Oribatiden-Arten (Acari) eines suedwestdeutschen Buchenwaldes I., pp. 37-82 in carolinea 49 on page 4