You will not miss this most common spider on Ubin - the Golden Orb Web Spider (Nephila maculata). This is a female which is much bigger than the male.
I encountered many Knights (Lebadea martha) along Jalan Ubin as well as Jalan Durian. I believe both sub-species parkeri and malayana were present on Ubin. This one looks more like a malayana from a glimpse of its rather brownish-orange patch near the edge of its upperside hindwing. All the Knights that I encountered were very skittish and they didn't stay long enough for me to get a closer shot. This is a long-distance shot of a more pristine Lebadea martha parkeri.
This showy and attractive flower is Gloriosa superba (Family : Liliceae). The outward-spreading yellow stamens are rather unique and prominent.
A grasshopper was staying very still on the Singapore Rhododendron (Melastoma malabathricum) leaf along the trail.