| Pachyballus ornatus | |
|---|---|
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Scientific classification 
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| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Arthropoda |
| Subphylum: | Chelicerata |
| Class: | Arachnida |
| Order: | Araneae |
| Infraorder: | Araneomorphae |
| Family: | Salticidae |
| Subfamily: | Salticinae |
| Genus: | Pachyballus |
| Species: | P. ornatus
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| Binomial name | |
| Pachyballus ornatus Wesołowska, Azarkina & Wiśniewski, 2020
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Pachyballus ornatus is a species of jumping spider in the genus Pachyballus that lives in the forested mountains of Democratic Republic of the Congo and Tanzania. It was first described in 2020 by Wanda Wesołowska, Galina Azarkina and Konrad Wiśniewski. A small spider, it has a cephalothorax that is ranges from 1.2 to 1.7 mm long and an abdomen that is between 1.7 and 2.3 mm long. The spider is generally brown with a distinctive abdominal pattern of brown patches on a yellow background. This pattern is recalled in the species name, which means "decorated". Younger females are darker and lack the pattern, which appears as they mature. In an immature state, they can be confused with the related Pachyballus flavipes. The spider has yellow spinnerets and brown pedipalps. Its front legs are stouter and darker than the rest. Its copulatory organs are typical for the genus. The male has a thin coiled embolus that projects from the palpal bulb. The female has a semi-circular depression towards the front of its epigyne that is divided by a wide ridge.