The species is named after Mawlamyaing (formerly Moulmein), a city in Burma where some of the first specimens were collected.[1] It is known by the Japanese name Toge-gomigumo.[2]
C. mulmeinensis is a small to medium-sized orb-weaver spider with notable sexual dimorphism in size and coloration.[2]
female with egg sac
Female
The female is larger than the male, with a body length ranging from 3.42 to 5.00mm. The carapace measures 1.44–1.70mm in length and 1.17–1.47mm in width, while the abdomen is 2.00–3.03mm long and 1.87–2.87mm wide. The carapace is dark brown and often paler anteriorly. The abdomen is pale brown with dark brown mottling.[2]
The female's legs show specific proportional measurements, with the first pair of legs being the longest. The chelicerae bear three promarginal teeth and 2–3 retromarginal teeth.[2]
Male
The male is considerably smaller, with a body length of 2.60–3.13mm. The carapace measures 1.36–1.53mm in length and 1.08–1.23mm in width, while the abdomen is 1.34–1.76mm long and 1.13–1.44mm wide. The male's carapace is dark brown, and the abdomen shows variable coloration patterns, ranging from pale brown mottled with dark brown to blackish brown with paired white spots.[2]
The male possesses distinctive pedipalps with a median apophysis featuring a large triangular appendix. The embolus is filiform and wrapped in an edge of conductor.[2]
Taxonomy
The species was originally described as Epeira mulmeinensis by Thorell in 1887.[1] It was later transferred to the genus Cyclosa by Eugène Simon in 1909.[4] The species Argyrodes longispinus Saitō, 1933 was synonymized with C. mulmeinensis by Tanikawa in 1963.[2]
The species bears resemblance to Cyclosa vallata (Keyserling, 1886), and detailed comparative studies have been conducted to distinguish between these closely related species.[2]
References
1 2 3 Thorell, T. (1887). "Viaggio di L. Fea in Birmania e regioni vicine. II. Primo saggio sui ragni birmani". Annali del Museo Civico di Storia Naturale di Genova. 25: 5–417.
1 2 3 4 5 6 7 8 9 10 11 Tanikawa, A. (1992). "A revisional study of the Japanese spiders of the genus Cyclosa (Araneae: Araneidae)". Acta Arachnologica. 41 (1): 11–85. doi:10.2476/asjaa.41.11.
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