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The ventral side of a brown widow spider. The epigastric plates and furrow are visible, as well as the hourglass marking on the underside of the abdomen, which is a characteristic feature of widow spiders. The anatomy of spiders includes many characteristics shared with other arachnids.
As the epigyne varies greatly in form in different species, even in closely related ones, it often provides the most distinctive characteristic for recognizing species. It consists of a small, hardened portion of the exoskeleton located on the underside of the abdomen, in front of the epigastric furrow and between the epigastric plates. [1]
Basic arrangement of spider eyes, viewed from above Arrangement of eyes in most Salticidae, viewed from above. Epigastric furrow or epigastric fold: A transverse slit towards the front (anterior) of underside of the abdomen; the front pair of book lungs open at the edge of this furrow as do the genital openings (gonopores) [10]
The spider has an elongated epigyne with a large deep central depression and two pockets lining the sides of the epigastric furrow. The copulatory openings, placed at the back of the epigyne, lead to wide insemination ducts to u-shaped receptacles, or spermathecae .
Underside of abdomen is dark brown followed by two white patches along the abdomen right behind the epigastric furrow. Salsa fuliginata male has a slightly curved and short paracymbium ; conductor lobe is sturdy and attach to conductor from basal of embolus ; median apophysis has a flat tip, has a C-shape and also lengthened, it is also basally ...
A small spider, Phlegra pusilla is identified by a characteristic colour pattern on the carapace, as well as by the structure of the copulatory organs. [3] The male embolus has a thin, slightly twisted tip and a wide base and the female has a shallow rounded trench close to the epigastric furrow.
Heteropoda davidbowie was first described by Peter Jäger in 2008, based on a specimen collected by G. Ackermann in 2007 in the Cameron Highlands of peninsular Malaysia.The species name honours David Bowie, with particular reference to songs such as "Glass Spider" (from the 1987 album Never Let Me Down), as well as the 1972 album The Rise and Fall of Ziggy Stardust and the Spiders from Mars ...
The spider is medium-sized, with a cephalothorax that is between 2.1 and 2.2 mm (0.083 and 0.087 in) long and an abdomen that measures between 2.6 and 3.1 mm (0.10 and 0.12 in) long. It has a dark brownish carapace , while the abdomen differs between the male, which has a yellowish-brown hue, and the female, which is marked by an indistinctive ...