A new species of megophryid frog of the genus Leptolalax is described from the sacred groves of Mawphlang, East Khasi Hills, north-eastern India. L. khasiorum new species, is compared with congeners from India and other parts of south-east Asia. The new species is diagnosable in showing the following combination of characters: SVL 24.5–27.3 (mean 25.63 ± 0.61 SE) mm in a sample of four adult males; 31.2–33.4 (mean 32.50 ± 0.67 SE) mm in a sample of three females; dorsum with fine scattered tubercles; eyelids with tubercles; tympanum and supratympanic fold distinct; macroglands, including preaxillary, pectorals and ventrolateral glands present; Finger I > II; toe tips not dilated, bearing dermal fringes; dorsum with dark blotches; flanks with large dark blotches; dark tympanic mask present; venter lacking dark blotches; labial bars present and limbs with dark cross-bars.
Scanning electron microscopy revealed the presence of a number of cuticular sensillae on the head of different larval stages of the "Muga" silk moth, Antheraea assamensis. These include four types of sensilla trichodea, bead-like folded sensilla, two types of sensilla basiconica, and sensory pegs. The study seems to be the first attempt in describing the morphology and distribution pattern of the cephalic cuticular sensillae of different larval stages of the silk moth Antheraea assamensis, an indigenous species of Northeast India. The possible significance of the sensillae in searching behavior of the larval stages during feeding is discussed with the help of available literature.
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