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Other araneomorph spider (many families)Morebilus plagusius

Major Flatrock Spider at Nadgee State Forest

2 images

Morebilus plagusius at Nadgee State Forest - 26 May 2018
Morebilus plagusius at Nadgee State Forest - 26 May 2018

Identification history

Other araneomorph spider (many families) Morebilus plagusius 29 May 2018 KerriLee
Other araneomorph spider (many families) Morebilus plagusius 29 May 2018 Harrisi
Unidentified 29 May 2018 MaxCampbell

Author's notes

A Huntsman (family Sparassidae) I think. I sat near it on a rock platform and only spotted it as it scuttled off to a nearby area of lichen discoloured rock that most nearly matched it's slate grey colour. It then froze and became almost indistinguishable against the rock. Body length circa 40mm. You will notice a small attendant fly, very well colour matched and sitting like a turret centre rear of the carapace (photo 1) and paying attention to the rear right leg (photo 2)

3 comments

Harrisi wrote:
   29 May 2018
Refer page 372-373 of Anderson/Whyte's spider guide. Glad you made mention of the cryptic fly Max, nearly through me that did. Looked like part of the spider's anatomy initially. Your estimate of body length (40mm) exceeds the prescribed length of 25mm though who's to say you haven't found the biggest one yet!? Family - Trochanteriidae and commonly - Major flatrock spider.
KerriLee wrote:
   29 May 2018
Thanks Stuart - I'll add this species to our lists. Interestingly, I found one just a few days ago too, and was still pondering ID.
   30 May 2018
Hi Stuart - I think it's likely I have over estimated the body length. The photo in the Anderson/Whyte's spider guide is convincing and the description of Trochanteriidae is very interesting. I was amused by the suggestion that the easiest way to distinguish Trochanteriids from Gnaphosids is to see if they can run up glass. (Gnaphosids can't) Doesn't sound like a very practical technique in the field and must be very distressing for the Gnaphosids. The guide also says that Trochanteriids 0ften have substantial spines on their legs. My photos aren't great for detail, but you can distinguish the spines (photo 2 - front right trochanter.)

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Nearby Sightings

Page 1 of 1 pages - image sightings only 378 0 16

Pterostylis parviflora (Tiny Greenhood) at Nadgee State Forest - 28 May 2019 Cyptotrama asprata (Gold Tufts) at Nadgee State Forest - 22 Dec 2018 Acacia constablei (Narrabarba Wattle) at Nadgee State Forest - 3 Dec 2018 Thysanotus juncifolius (Branching Fringe Lily) at Nadgee State Forest - 3 Dec 2018 Nicodamus peregrinus (Common Red and black spider) at Nadgee State Forest - 27 May 2018 Cryptandra amara (Bitter Cryptandra) at Nadgee State Forest - 26 May 2018 Acacia constablei (Narrabarba Wattle) at Nadgee State Forest - 26 May 2018 Aglaosoma variegata (A Prominent moth) at Nadgee State Forest - 26 May 2018 Melanococcus albizziae (Acacia Mealybug) at Nadgee State Forest - 11 May 2017 Aglaosoma variegata (A Prominent moth) at Nadgee State Forest - 10 May 2017 Helicarion cuvieri (semi-slug) at Nadgee State Forest - 10 May 2017 Pterostylis parviflora (Tiny Greenhood) at Nadgee State Forest - 10 May 2017 Acacia constablei (Narrabarba Wattle) at Nadgee State Forest - 10 May 2017 Cyanicula caerulea (Blue Caladenia) at Nadgee State Forest - 21 Sep 2014 Entoloma sp. (Entoloma) at Nadgee State Forest - 13 Jun 2014 Genoplesium morrisii (TBC) at Nadgee State Forest - 23 Apr 2014
Pterostylis parviflora (Tiny Greenhood) at Nadgee State Forest - 28 May 2019
Cyptotrama asprata (Gold Tufts) at Nadgee State Forest - 22 Dec 2018
Acacia constablei (Narrabarba Wattle) at Nadgee State Forest - 3 Dec 2018
Thysanotus juncifolius (Branching Fringe Lily) at Nadgee State Forest - 3 Dec 2018
Nicodamus peregrinus (Common Red and black spider) at Nadgee State Forest - 27 May 2018
Cryptandra amara (Bitter Cryptandra) at Nadgee State Forest - 26 May 2018
Acacia constablei (Narrabarba Wattle) at Nadgee State Forest - 26 May 2018
Aglaosoma variegata (A Prominent moth) at Nadgee State Forest - 26 May 2018
Melanococcus albizziae (Acacia Mealybug) at Nadgee State Forest - 11 May 2017
Aglaosoma variegata (A Prominent moth) at Nadgee State Forest - 10 May 2017
Helicarion cuvieri (semi-slug) at Nadgee State Forest - 10 May 2017
Pterostylis parviflora (Tiny Greenhood) at Nadgee State Forest - 10 May 2017
Acacia constablei (Narrabarba Wattle) at Nadgee State Forest - 10 May 2017
Cyanicula caerulea (Blue Caladenia) at Nadgee State Forest - 21 Sep 2014
Entoloma sp. (Entoloma) at Nadgee State Forest - 13 Jun 2014
Genoplesium morrisii (TBC) at Nadgee State Forest - 23 Apr 2014

Page 1 

Location

Location information

Species information

  • Not Sensitive
  • Local Native
  • Non-Invasive

Sighting information

  • 1 Abundance
  • 26 May 2018 3:02 PM Recorded on
  • MaxCampbell Recorded by
  • Website Reported via
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