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Micrathena

Thorn spiders

micrathena.sp1

Micrathena schreibersi (link). All black, with yellow abdomen marking and border. Abdomen is triangular, and tapers to two large spines. Smaller black spines line the abdomen.

2018.JAS.E.38, 2019.YSN.W3.34, 2018.JAS.C.9, 2018.JAS.E.94, 2018.JAS.W9.25

Morphospecies ID: A. Haberkern; Pictures: A. Haberkern

Locations: Jatun Sacha Biological Station, Ecuador (400 m.a.s.l.); Estación Biológica Yasuní, Ecuador (250 m.a.s.l.)

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Genus

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2018.JAS.E.38

micrathena.sp2

Micrathena vigorsi (link). Six mid-sized spikes. There are four spikes on the ventral abdomen close together that are black and yellow.

2018.JAS.C.10, 2019.YSN.W4.11, 2018.JAS.W3.38, 2018.JAS.E.128

Morphospecies ID: A. Haberkern; Pictures: A. Haberkern

Locations: Jatun Sacha Biological Station, Ecuador (400 m.a.s.l.); Estación Biológica Yasuní, Ecuador (250 m.a.s.l.)

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Genus

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2018.JAS.E.128

micrathena.sp3

Micrathena balzapamba (link).

2018.JAS.E.168, 2018.JAS.E.194, 2018.JAS.E.56, 2018.JAS.W3.3a, 2018.JAS.E.34

Morphospecies ID: A. Haberkern

Location: Jatun Sacha Biological Station, Ecuador (400 m.a.s.l.)

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micrathena.sp6

Micrathena pungens (link). Dark brown, with cream-coloured border on abdomen and cephalothorax, and a dimply abdomen and cephalothorax. Solid brown legs.

2018.JAS.E.28, 2018.JAS.E.158, 2018.JAS.E.27

Morphospecies ID: A. Haberkern

Locations: Jatun Sacha Biological Station, Ecuador (400 m.a.s.l.); Estación Biológica Yasuní, Ecuador (250 m.a.s.l.)

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Genus

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micrathena.sp7

Micrathena clypeata (link).

2017.JAS.W9.23, 2018.JAS.W3.29, 2019.YSN.W1.33, 2019.YSN.W4.20, 2019.YSN.W4.3, 2019.YSN.W2.4

Morphospecies ID: A. Haberkern; Pictures: J. Schmidt

Locations: Jatun Sacha Biological Station, Ecuador (400 m.a.s.l.); Estación Biológica Yasuní, Ecuador (250 m.a.s.l.)

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Genus

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Genus

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2017.JAS.W9.23

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2017.JAS.W9.23

micrathena.sp8

Micrathena sexpinosa (link). 

2018.JAS.E.2, 2018.JAS.E.241

Morphospecies ID: A. Haberkern

Locations: Jatun Sacha Biological Station, Ecuador (400 m.a.s.l.)

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micrathena.sp11

Micrathena kirbyi (link). Two back spines have a pinkish colour to them. Abdomen has yellow and black stripes.

2017.JAS.W7.17, 2018.JAS.E.189, 2018.JAS.C.8, 2018.JAS.E.181, 2018.JAS.E.195, 2018.JAS.E.199, 2018.JAS.E.45

Morphospecies ID: A. Haberkern; Picture: J. Schmidt

Locations: Jatun Sacha Biological Station, Ecuador (400 m.a.s.l.)

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Genus

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Genus

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2017.JAS.W7.17

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2017.JAS.W7.17

micrathena.sp12

Micrathena yanomami (link). Cephalothorax is orange-brown with a black border and dark eyes. Abdomen is wedge-shaped and white and covered in yellow polka dots. There are four spines at the back of abdomen that are black and red. Bottom of abdomen is pale with a yellow circle with a black edge around it. Legs are brown.

2019.BGL.W7.5, 2019.BGL.W7.6, 2019.BGL.W7.7, 2019.BGL.W7.8
2018.JAS.E.115, 2018.JAS.E.245

Locations: Reserva Biologica del Rio Bigal, Ecuador (900 m.a.s.l.); Jatun Sacha Biological Station, Ecuador (400 m.a.s.l.)

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Genus

Family

Order

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2019.BGL.W7.6

Morphospecies ID: J. Schmidt; Picture: J. Schmidt

micrathena.sp13

Micrathena aff. acuta. (linkCream-coloured, with brown markings, very dark horns, two protruding horns on end of abdomen, 2 spines from front of abdomen that cover the cephalothorax, brown cephalothorax with distinct dark brown band down middle, and cream-coloured markings on sides.

2019.YSN.W5.28, 2019.YSN.W5.40

Morphospecies ID: A. M. Haberkern; Taxonomic ID: A. Brescovit

Location: Estación Biológica Yasuní, Ecuador (250 m.a.s.l.)

No refugium
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micrathena.sp14

Rectangular abdomen shaped like a manatee fin. Body is all dark brown, with lighter legs.

2019.YSN.W5.32, 2019.YSN.W5.34

Morphospecies ID: A. M. Haberkern; Taxonomic ID: A. Brescovit

Location: Estación Biológica Yasuní, Ecuador (250 m.a.s.l.)

No refugium
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micrathena.sp16

Ant mimic. Dark brown and black splotchy. Abdomen is very long with distinct knob-like bump on the top that tapers into a round shape at the end. Abdomen tapers at 4 different places. Legs match rest of body. Very pointy pedipalps.

2019.YSN.W5.26

Morphospecies ID: A. M. Haberkern; Taxonomic ID: A. Brescovit

Location: Estación Biológica Yasuní, Ecuador (250 m.a.s.l.)

No refugium
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micrathena.sp17

Cephalothorax dark grey, and pentagon shaped. Abdomen is loosely V-shaped with 2 spikes  at each tip. Abdomen is dark grey with white dots. Legs are all yellow except the first leg pair femurs are black.

2019.BGL.W6.12, 2019.BGL.W6.26

Morphospecies ID: J.C. Schmidt; Taxonomic ID: A. Brescovit; Pictures: J. C. Schmidt

Location: Reserva Biologica del Rio Bigal, Ecuador (900 m.a.s.l.)

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2019.BGL.W6.12

micrathena.sp18

Cephalothorax is dark brown and oval-shaped with black eyes. Abdomen is cinched so as to create two fake segments. First 'segment' is oval with raised mound on bottom for spinnerets & 4 spikes coming out of top, as well as black and orange colouring. Second 'segment' is black-coloured, and spear-shaped. Slight white markings across entire abdomen. White belt-shaped marking between cephalothorax and abdomen. Legs are orange-yellow.

2019.BGL.W4.31

Morphospecies ID: J.C. Schmidt; Taxonomic ID: D. De Roche; Pictures: J. C. Schmidt

Location: Reserva Biologica del Rio Bigal, Ecuador (900 m.a.s.l.)

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2019.BGL.W4.31

2019.BGL.W4.31

micrathena.sp20

Cephalothorax is dark brown with a cream marking. Legs are black with yellow tibia. Abdomen is dark brown and rectangular, with silver and gold splotches. Ventral side is all dark.

2019.NRP.W4.38

Morphospecies ID: J.C. Schmidt; Taxonomic ID: A. Brescovit; Pictures: J. C. Schmidt

Locations: Narupa Reserve, Ecuador (1100 m.a.s.l)

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Genus

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2019.NRP.W4.38

micrathena.sp21

Beige cephalothorax with black border and dark eyes. Wedge-shaped abdomen. Abdomen is also beige with black markings, border, and 2 black spines. There are 4 small beige spines on abdomen. Legs are dark brown, and the ventral side is black with yellow markings.

2019.BRJ.W3.23

Morphospecies ID: J.C. Schmidt; Taxonomic ID: D. De Roche; Pictures: J. C. Schmidt

Location: Concierto de Aves, Borja, Ecuador (1700 m.a.s.l)

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2019.BRJ.W3.23

2019.BRJ.W3.23

micrathena.sp22

Reddish-brown cephalothorax and legs. Abdomen is  oval with two large horns on dorsal side with red tips. Abdomen is yellow with black dots. Ventral abdomen is yellow with black markings. Spinnerets are on a raised mound. Brown hairs on the legs.

2019.BRJ.W6.5

Morphospecies ID: J.C. Schmidt; Taxonomic ID: D. De Roche; Pictures: J. C. Schmidt

Location: Concierto de Aves, Borja, Ecuador (1700 m.a.s.l);

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2019.BRJ.W6.5

micrathena.sp23

Cephalothorax is dark brown, with dark eyes. Abdomen is rectangular and dark brown with light brown markings. Edges of abdomen are pointy, with 2 small yellow spikes from underneath abdomen, underside black, with yellow markings, cephalothorax underside black, legs are black and yellow

2019.NRP.W3.22, 2019.NRP.W4.32

Morphospecies ID: J.C. Schmidt; Taxonomic ID: D. De Roche; Pictures: J. C. Schmidt

Locations: Narupa Reserve, Ecuador (1100 m.a.s.l)

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2019.NRP.W3.22

2019.NRP.W3.22

micrathena.sp24

Cephalothorax is oval and brown. Abdomen is wedge-shaped and cream-coloured with four spines on the back and two spines coming out of the abdomen centre. All spines are black. There are brown dots on abdomen, pedipalps are beige and wrinkled, legs are yellow, ventral abdomen is black and yellow.

2019.CDR.W5.37

Morphospecies ID: J.C. Schmidt; Taxonomic ID: D. De Roche; Pictures: J. C. Schmidt

Location: Cocodrilos, Ecuador (1800 m.a.s.l)

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2019.CDR.W5.37

micrathena.sp25

Dark brown cephalothorax with cream circle marking. Abdomen is dark brown with two cream rectangles, and six small spikes on tip of abdomen. Legs are black and yellow, and ventral side is black  with yellow markings. Chelicerae are yellow.

2019.NRP.W4.2, 2019.NRP.W4.40

Morphospecies ID: J.C. Schmidt; Taxonomic ID: D. De Roche; Pictures: J. C. Schmidt

Locations: Narupa Reserve, Ecuador (1100 m.a.s.l)

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2019.NRP.W4.2

2019.NRP.W4.2

micrathena.sp26

Oval brown cephalothorax. Abdomen is wedge-shaped and cream, almost silvery with brown dots, and four spikes (two yellow and two brown, all at end of abdomen). Ventral side is black  with two horizontal white stripes. Legs are brown with yellow coxae.

2019.NRP.W4.36

Morphospecies ID: J.C. Schmidt; Taxonomic ID: D. De Roche; Pictures: J. C. Schmidt

Locations: Narupa Reserve, Ecuador (1100 m.a.s.l)

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2019.NRP.W4.36

2019.NRP.W4.36

micrathena.sp27

White cephalothorax with black border, black legs with small spines, and cream pedipalps. Abdomen is coffin-shaped with two black spines (on tip) and cream and silver circular markings. Ventral side is black with yellow markings on cephalothorax and abdomen.

2019.BRJ.W3.24

Morphospecies ID: J.C. Schmidt; Taxonomic ID: D. De Roche; Pictures: J. C. Schmidt

Location: Concierto de Aves, Borja, Ecuador (1700 m.a.s.l)

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2019.BRJ.W3.24

2019.BRJ.W3.24

micrathena.sp28

Cephalothorax is dark brown with circular cream marking. Abdomen is dark brown with cream markings and four small spines on end of abdomen. Legs are black and yellow, and ventral side is black with three horizontal yellow stripes on abdomen.

2019.NRP.W4.3

Morphospecies ID: J.C. Schmidt; Taxonomic ID: D. De Roche; Pictures: J. C. Schmidt

Locations: Narupa Reserve, Ecuador (1100 m.a.s.l)

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2019.NRP.W4.3

2019.NRP.W4.3

micrathena.sp29

Cephalothorax is triangular and light brown with dark brown markings and black eyes, and thick brown legs. Abdomen is rectangular and brown with sporadic small white and brown markings, slight banding on legs, and bright red sternum.

2019.YSN.W3.13

Morphospecies ID: A. M. Haberkern; Taxonomic ID: A. Brescovit; Pictures: A. M. Haberkern

Location: Estación Biológica Yasuní, Ecuador (250 m.a.s.l.)

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2019.YSN.W3.13

2019.YSN.W3.13

micrathena.sp30

Large dark brown oval cephalothorax with light brown markings and oval eyes. Triangular abdomen with two black spines on the tips. Abdomen is black and silver and extremely bumpy and ridged. Legs are thick brown and orange. Chelicerae are cream.

2019.YSN.W3.15

Morphospecies ID: A. M. Haberkern; Taxonomic ID: A. Brescovit

Location: Estación Biológica Yasuní, Ecuador (250 m.a.s.l.)

No refugium
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micrathena.sp31

Black diamond-shaped cephalothorax with faint grey heart-shaped marking near pedicel. Rectangular black abdomen, with the tips of the rectangle being spiked. There are eight white dots on abdomen that are arranged in two parallel lines. Legs are yellow and brown striped as is the pedipalps. Both have short brown hairs, and entire underside is black except yellow marking at tip.

2019.YNC.W5.11

Morphospecies ID: J.C. Schmidt; Taxonomic ID: D. De Roche; Pictures: J. C. Schmidt

Location: Yanayacu Biological Station, Ecuador (2100 m.a.s.l)

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2019.YNC.W5.11

2019.YNC.W5.11

micrathena.sp32

Black oval cephalothorax with black eyes, black pedipalps, and black chelicerae. Abdomen is rectangular and black, and narrows to a point near the pedicel and also at the rear corners of the rectangle. Abdomen has five white dots on it. Sternum is black, and underside of abdomen is black with a yellow dot. Legs are black, yellow, and white banded.

2019.BRJ.W7.27, 2019.NRP.W5.38

Morphospecies ID: J.C. Schmidt; Taxonomic ID: D. De Roche; Pictures: J. C. Schmidt

Locations: Concierto de Aves, Borja, Ecuador (1700 m.a.s.l); Narupa Reserve, Ecuador (1100 m.a.s.l)

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2019.BRJ.W7.27

2019.BRJ.W7.27

micrathena.sp35

Wedge-shaped, beige cephalothorax with black eyes. Grey, rectangular abdomen with lighter grey markings. Yellow femurs, with the rest of the legs black. Underside black with gold stripes. No hairs or spines.

2019.BGL.W6.20, 2019.BGL.W6.14, 2019.NRP.W3.27, 2019.NRP.W3.35, 2019.NRP.W6.1

Morphospecies ID: J.C. Schmidt; Taxonomic ID: D. De Roche; Pictures: J. C. Schmidt

Locations:  Reserva Biologica del Rio Bigal, Ecuador (900 m.a.s.l.); Narupa Reserve, Ecuador (1100 m.a.s.l)

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2019.NRP.W3.27

2019.NRP.W3.27

micrathena.sp36

Oval black cephalothorax with black eyes, and an elongated bumpy black abdomen with two white dots. Underside is the same as the top in terms of colour and pattern. Legs are beige and brown banded, and pedipalps are black.

2019.NRP.W5.21

Morphospecies ID: J.C. Schmidt; Taxonomic ID: D. De Roche; Pictures: J. C. Schmidt

Locations: Narupa Reserve, Ecuador (1100 m.a.s.l)

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2019.NRP.W5.21.png

2019.NRP.W5.21

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