1. Tan LL, Lum SKY & Loo AHB (2011) Plectocomiopsis geminiflora (Griff.) Becc. (Arecaceae) — a new record for Singapore. Nature in Singapore, 4: 1–4. [PDF, 964 KB] [Corrigendum]
  2. Tan SK, Tan SH & Low MEY (2011) A reassessment of Verpa penis (Linnaeus, 1758) (Mollusca: Bivalvia: Clavagelloidea), a species presumed nationally extinct. Nature in Singapore, 4: 5–8. [PDF, 192 KB]
  3. Lim KKP & Cheong LF (2011) Dendrelaphis haasi (Reptilia: Squamata: Colubridae), a new snake record for Singapore.Nature in Singapore, 4: 9–12. [PDF, 383 KB]
  4. Leong TM & Tay A (2011) Final instar caterpillar and metamorphosis of Acherontia styx medusa Moore, 1858 in Singapore (Lepidoptera: Sphingidae: Sphinginae: Acherontiini). Nature in Singapore, 4: 13–18. [PDF, 1.32 MB]
  5. Lok AFSL, Ang WF & Tan HTW (2011) The rediscovery in Singapore of Polystachya concreta (Jacq.) Garay & H.R.Sweet (Orchidaceae). Nature in Singapore, 4: 19–24. [PDF, 1.13 MB]
  6. Lok AFSL, Ang WF & Tan HTW (2011) The status of in Singapore of Cystorchis variegata Bl. (Orchidaceae). Nature in Singapore, 4: 25–29. [PDF, 627 KB]
  7. Tan MK (2011) The Copiphorini (Orthoptera: Tettigoniidae: Conocephalinae) in Singapore. Nature in Singapore, 4: 31–42. [PDF, 1.41 MB]
  8. Lok AFSL, Ang WF, Chong KY, Ng PX, Teo S, Yee TK, Yeo CK & Tan HTW (2011) The status of Caesalpinia bonduc (L.) Roxb. in Singapore. Nature in Singapore, 4: 43–48. [PDF, 1.29 MB]
  9. Lok AFSL, Ang WF, Chong KY, Yeo CK & Tan HTW (2011) Rediscovery in Singapore of Coelogyne rochusseniiDe Vriese (Orchidaceae). Nature in Singapore, 4: 49–53. [PDF, 727 KB]
  10. Lok AFSL, Ang WF, Ng BYQ, Suen SM, Yeo CK & Tan HTW (2011) Leea L. (Vitaceae) of Singapore. Nature in Singapore, 4: 55–71. [PDF, 2.79 MB]
  11. Ang WF, Lok AFSL, Yeo CK, Ng BYQ & Tan HTW (2011) The status and distribution in Singapore of Plocoglottis javanica Blume (Orchidaceae). Nature in Singapore, 4: 73–77. [PDF, 646 KB]
  12. Ng TH & Tan SK (2011) Observations of land snails feeding on the eggs of Pomacea canaliculata (Lamarck, 1822) (Mollusca: Gastropoda). Nature in Singapore, 4: 79–83. [PDF, 1.06 MB]
  13. Leong TM (2011) Records of the black-faced conehead katydid, Peracca subulicerca (Karny, 1926) in Singapore, with an account of predation on a forest snail (Orthoptera: Tettigoniidae: Conocephalinae: Agraeciini). Nature in Singapore, 4: 85–90. [PDF 1.25 MB]
  14. Ng TH (2011) A record of the banded file snake, Acrochordus granulatus (Reptilia: Squamata: Acrochordidae) in a freshwater habitat in Singapore. Nature in Singapore, 4: 91–93. [PDF, 121 KB]
  15. Ngiam RWJ, Sun SW & Sek JY (2011) An update on Heliogomphus cf. retroflexus Ris, 1912 with notes onMicrogomphus chelifer Selys, 1858 in Singapore (Odonata: Anisoptera: Gomphidae). Nature in Singapore, 4: 95–99. [PDF, 715 KB]
  16. Leong TM & D’Rozario V (2011) Final instar caterpillars and metamorphosis of Acherontia lachesis (Fabricius, 1798) IN Singapore (Lepidoptera: Sphingidae: Sphinginae: Acherontiini). Nature in Singapore, 4: 101–114. [PDF, 3.10 MB]
  17. Lok AFSL, Ang WF, Ng PX, Ng BYQ & Tan SK (2011) Status and distribution of Faunus ater (Linnaeus, 1758) (Mollusca: Cerithioidea) in Singapore. Nature in Singapore, 4: 115–121. [PDF, 1.73 MB]
  18. Loo AHB (2011) Rediscovery in Singapore of Salacca affinis Griff. (Arecaceae). Nature in Singapore, 4: 123–126. [PDF, 300 KB]
  19. Teo S, Chong KY, Chung YF, Kurukulasuriya BR & Tan HTW (2011) Casual establishment of some cultivated urban plants in Singapore. Nature in Singapore, 4: 127–133. [PDF, 1.02 MB]
  20. Leong TM & Lim KKP (2011) Occurrence of Günther’s frog, Hylarana guentheri (Amphibia: Anura: Ranidae) in Singapore.Nature in Singapore, 4: 135–141. [PDF, 734 KB]
    Download sound clip here (725 KB)
  21. Lim KKP, Leong TM & Lim FLK (2011) The king cobra, Ophiophagus hannah (Cantor) in Singapore (Reptilia: Squamata: Elapidae). Nature in Singapore, 4: 143–156. [PDF, 1.77 MB]
  22. Neo ML, Todd PA, Chou LM & Teo SL-M (2011) Spawning induction and larval development in the fluted giant clam,Tridacna squamosa (Bivalvia: Tridacnidae). Nature in Singapore, 4: 157–161. [PDF, 650 KB]
  23. Leong TM, Aminurashid & Lee BPY-H (2011) Records of the cicada, Chremistica umbrosa (Distant, 1904) in Singapore, with accounts of its mass emergence (Homoptera: Cicadidae: Cicadinae). Nature in Singapore, 4: 163–175. [PDF, 2.01 MB]
    Download sound clip here (957 KB)
  24. Leong TM (2011) The caterpillar and metamorphosis of Erebus ephesperis (Hübner, 1827) in Singapore (Lepidoptera: Erebidae: Erebinae: Erebini). Nature in Singapore, 4: 177–191. [PDF, 2.80 MB]
  25. Leong TM, Mishak Shunari, Aminurashid & Harvey-Samuel TD (2011) The jade-green cicada, Dundubia vaginata(Fabricius, 1787) in Singapore, with notes on emergence, bioacoustics, and mating (Homoptera: Cicadidae: Cicadinae). Nature in Singapore, 4: 193–202. [PDF, 1.22 MB]
    Download sound clip here (675 KB)
  26. Leong TM, Mishak Shunari, Leong LYK, & Foo SK (2011) Records of the black and golden cicada, Huechys fuscaDistant, 1892 in Singapore, with natural history observations (Homoptera: Cicadidae: Cicadettinae). Nature in Singapore, 4: 203–211. [PDF, 1.03 MB]
    Download sound clip here (606 KB)
  27. Yeo CK & Tan HTW (2011) Ficus stranglers and Melastoma malabathricum: potential tropical woody plants for phytoremediation of metals in wetlands. Nature in Singapore, 4: 213–226. [PDF, 505 KB]
  28. Teo S, Chong KY, Kurukulasuriya BR, Chung YF & Tan HTW (2011) The status of an exotic shrub, Acalypha siamensis Oliv. ex Gage (Euphorbiaceae), in Singapore. Nature in Singapore, 4: 227–231. [PDF, 653 KB]
  29. Tan MK (2011) The species of Asiophlugis gorochov, 1998 in Singapore (Orthoptera: Tettigoniidae: Meconematinae). Nature in Singapore, 4: 233–239. [PDF, 707 KB]
  30. Ngoi PS, Tan J & Ngiam RWJ (2011) New record of a dragonfly, Zyxomma obtusum Albarda, 1881 in Singapore (Odonata: Anisoptera: Libellulidae). Nature in Singapore, 4: 241–244. [PDF, 733 KB]
  31. Leong TM (2011) Record of the bagworm moth, Chalioides sumatrensis Heylaerts, 1887 in Singapore (Lepidoptera: Psychidae: Oiketicinae: Acanthopsychini). Nature in Singapore, 4: 245–250. [PDF, 873 KB]
  32. Leong TM (2011) The brown form final instar caterpillar of the hawkmoth, Acherontia lachesis (Fabricius, 1798) in Singapore (Lepidoptera: Sphingidae), with an account of parasitism by the tachinid fly, Drino (Zygobothria) atropivora(Robineau-Desvoidy, 1830). Nature in Singapore, 4: 251–258. [PDF, 1.28 MB]
  33. Figueroa A & Selveindran PM (2011) A new locality for the thorny bush frog, Theloderma horridum Boulenger (Amphibia: Anura: Rhacophoridae) in Singapore. Nature in Singapore, 4: 259–262. [PDF, 630 KB] [Corrigendum]
  34. Teo S, Yeo RKH, Chong KY, Chung YF, Neo L & Tan HTW (2011) The flora of Pulau Semakau: a Project Semakau checklist. Nature in Singapore, 4: 263–272. [PDF, 0.99 MB] [Corrigendum]
  35. Ang WF, Lok AFSL, Yeo CK, Tan JSY, Ng PX, Ng BYQ & Tan HTW (2011) The status and distribution ofNephelaphyllum pulchrum Bl. (Orchidaceae) in Singapore. Nature in Singapore, 4: 273–276. [PDF, 327 KB]
  36. Chua MAH (2011) The herpetofauna and mammals of Semakau Landfill: A Project Semakau checklist. Nature in Singapore,4: 277–287. [PDF, 890 KB] [Corrigendum]
  37. Ang WF, Lok AFSL, Chong KY, Yeo CK, Ng BYQ, Ng PX & Tan HTW (2011) Eulophia R. Br. ex Lindl. (Orchidaceae) of Singapore. Nature in Singapore, 4: 289–296. [PDF, 709 KB]
  38. Ang WF, Lok AFSL, Yeo CK, Angkasa A, Ng PX, Ng BYQ & Tan HTW (2011) Rediscovery of Renanthera elongata (Blume) Lindl. (Orchidaceae) in Singapore. Nature in Singapore, 4: 297–301. [PDF, 336 KB]
  39. Leong TM & Ali Ibrahim (2011) Oviposition by the black and scarlet cicada, Huechys sanguinea (De Geer, 1773) in Singapore (Homoptera: Cicadidae: Cicadettinae). Nature in Singapore, 4: 303–306. [PDF, 698 KB]
  40. Leong TM (2011) Encounter with a green form final instar caterpillar of the hawkmoth, Theretra nessus nessus (Drury, 1773) in Singapore (Lepidoptera: Sphingidae: Macroglossinae). Nature in Singapore, 4: 307–310. [PDF, 378 KB]
  41. Tan SK & Low MEY (2011) An update on the West African Limicolaria flammea (Müller, 1774) in Singapore, and its distinction from the confamilial Achatina fulica Bowdich, 1822 (Mollusca: Gastropoda: Achatinidae). Nature in Singapore, 4: 311–317. [PDF, 469 KB]
  42. Leong TM (2011) The caterpillar and cocoon of Pompelon marginata (Guerin, 1843) in Singapore (Lepidoptera: Zygaenidae: Chalcosiinae), with an account of parasitism by the tachinid fly, Senometopia distincta (Baranov, 1931). Nature in Singapore,4: 319–328. [PDF, 1.81 MB]
  43. Hassan Ibrahim, Leong PKF, Yam TW & Lua HK (2011) The rediscovery of the ground orchid Dienia ophrydis (J. König) Seidenf. (Orchidaceae) in Singapore. Nature in Singapore, 4: 329–337. [PDF, 870 KB]
  44. Lin YJ & Quek RF (2011) Observations on mass emergence of chironomids (Diptera: Chironomidae) in Bedok, Singapore with notes on human–chironomid interactions. Nature in Singapore, 4: 339–347. [PDF, 483 KB]
  45. Ngiam RWJ & Davison GWH (2011) A checklist of dragonflies in Singapore parks (Odonata: Anisoptera, Zygoptera).Nature in Singapore, 4: 349–353. [PDF, 144 KB]
  46. Leong TM (2011) Caterpillars and metamorphosis of the common faun, Faunis canens arcesilas (Stichel, 1933) in Singapore (Lepidoptera: Nymphalidae: Morphinae). Nature in Singapore, 4: 355–361. [PDF, 954 KB]
  47. Tan HH & Lim KKP (2011) Rediscovery of the bigmouth stream goby, Pseudogobiopsis oligactis (Actinopterygii: Gobiiformes: Gobionellidae) in Singapore. Nature in Singapore, 4: 363–367. [PDF, 401 KB]
  48. Leong TM (2011) Observations of pupal eclosion and pheromone release in the oleander hawkmoth, Daphnis nerii(Linnaeus, 1758) (Lepidoptera: Sphingidae: Macroglossinae). Nature in Singapore, 4: 369–375. [PDF, 1.62 MB]
  49. Lim KKP & Tan HH (2011) Addition of three cyprinid fishes to the established alien fauna of Singapore. Nature in Singapore, 4: 377–382. [PDF, 583 KB]
  50. Yeo CK, Ng BYQ, Ng PX, Chong KY, Lok AFSL, Ang WF, Tan SY & Tan HTW (2011) Air-layering: a suitable method for mass-propagating the nationally critically endangered Fagraea auriculatum Jack (Gentianaceae). Nature in Singapore, 4: 383–392. [PDF, 2.19 MB]
  51. Dow RA & Ngiam RWJ (2011) Two damselflies new to Singapore: Amphicnemis bebar Dow, Choong & Ng andTeinobasis cryptica Dow (Odonata: Zygoptera: Coenagrionidae). Nature in Singapore, 4: 393–396. [PDF, 254 KB]