The Dark Blue Butterfly Scientific Name – Tirumala septentrionis Location – Wayanad, Kerala, India Date – August 2014 The Dark Blue Tiger (Tirumala septentrionis) is a Danaid butterfly found in South and Southeast Asia. Closely resembles Tirumala limniace, Cramer, but is always sufficiently distinct to be easily recognized, even on the wing. From T. limniace it differs on the upperside in the ground-colour being darker and the semihyaline markings narrower, more distinct, and of a bluer tint, In the fore wing, in interspace 1 the two streaks are narrower, never coalescent, the upper one forming an oval detached spot; the short streaks above vein 5 are outwardly never truncate, always acute. In the hind wing the two streaks if the discoidal cell united at base are wide apart at their apices, the lower one never formed into a hook. On the underside this species is generally darker, the apex of the fore wing and the whole of the ground-colour of the hind wing not being of the conspicuous golden brown that they are in Tirumala limniace. Expanse: 80–115 mm. The distribution is Himalayas from Simla to Sikhim, into Assam, Myanmar, and Southeast Asia. This species is one of the predominant species (78%) during the migratory season in southern India during which many species migrate. Both males and females appear to migrate in equal numbers. Device – Nikon D3x Lens – Nikon AF-S 400mm f/2.8G ED VR AF Focal Length – 400mm Aperture – F/8 Shutter Speed – 1/500s Exposure Mode – Manual Metering – Matrix ISO – 200
Posted on: Tue, 12 Aug 2014 05:02:38 +0000
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