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Saturday, October 10, 2009

Some Spiders....


Opadometa fastigata (Simon, 1877)

Family: Tetragnathidae
Size: 7-9 mm.
Distribution: India, Philippines.
Habitat: Low shrubs in shaded and moist environments.
These are orb web builders in shaded vegetation. The cephalothorax is flat which is pale yellow, darkens medially and towards the margin. Pedicel joins the abdomen some distance along the ventral side. Front of the abdomen of the female tapers strongly and overhangs most of the carapace. The abdomen is tubular, tapers to the front and protrudes to the rear over the spinnerets. There are silver white patches all over the abdomen. The legs are long and thin with dark brown annulations. Femora IV with uniform rakes of long curved trichobothria. There is also a substantial brush of hairs all round or almost all along tibia IV.





Nephila maculata (Fabricius) 1793

Family: Tetragnathidae
Size: Female: 50-60 mm; Male: 5-6 mm.
Distribution: India, Sri Lanka, Singapore, Myanmar, Papua New Guinea, China, Japan, Northern Australia.
Habitat: Primary and secondary forests, wasteland and gardens.
The cephalothorax is thin and flat with the cephalus raised. At the rear of the cephalus, there are two short horn-like projections. The abdomen is long, rounded, widest and truncated in the front, narrowing gradually to a rounded posterior. The abdomen covers pedicel and spinnerets. The legs are very long. The front legs are about twice as long as the spider, thin, brittle and swollen at the joints. There is a longitudinal row of short spines on the femora. Carapace is black and covered with very short silvery hairs. The abdomen is black with yellow longitudinal bands. The male is reddish brown in colour and hangs on the edge of the web and is very smaller than the female.



Nephila kuhlii Doleschall, 1859

Family: Tetragnathidae
Size: Female: 50-60 mm; Male: 5-6 mm.
Distribution: India, Sri Lanka, Singapore, Myanmar, Papua New Guinea, China, Japan, Northern Australia.
Habitat: Primary and secondary forests, wasteland and gardens.
The cephalothorax is thin and flat with the cephalus raised. At the rear of the cephalus, there are two short horn-like projections. The abdomen is long, rounded, widest and truncated in the front, narrowing gradually to a rounded posterior. The abdomen covers pedicel and spinnerets. The legs are very long and red in colour. The front legs are about twice as long as the spider, thin, brittle and swollen at the joints. There is a longitudinal row of short spines on the femora. Carapace and abdomen is black in colour. The male is reddish brown in colour and hangs on the edge of the web and is very smaller than the female.

Information borrowed from - www.southindianspiders.org






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