White-flecked Wolf Spider
Spiders of the genus Arctosa are often associated with wet places, such as marshes and rice fields. Some species can survive up to 16 hours under water.
The genus is represented by a single species in Singapore. It may be distinguished from other lycosids in Singapore by the many brilliant white flecks of flattened and highly reflective setae (modified hairs) distributed over most of its bronze-and-black body, especially conspicuous among the males. The largest of these flecks are on dorsal tibiae I and the area between the PME and PLE. It is relatively short-legged.
| Length | ♀ 6–9 mm; ♂ 6–8 mm. |
| Habitat | Banks of forest streams, and swampy ground in grassland and forest margins. |
| Biology | Nocturnal. |
| Type Locality | Luzon, Philippines. |
| Distribution | China, Malaysia, Philippines (Luzon Islands), Singapore, Thailand. |
Kingdom Animalia (Animals)
Phylum Arthropoda (Arthropods)
Subphylum Chelicerata (Chelicerates)
Class Arachnida (Arachnids)
Order Araneae (Spiders)
Suborder Araneomorphae (Typical Spiders)
Arctosa tanakai (Original description ♂♀)
Barrion & Litsinger, 1995 Riceland spiders of South and Southeast Asia: 373, f. 219a-d, 220a-b, 221a-j
China, Malaysia, Philippines (Luzon Islands), Singapore, Thailand.