Weekly Series
Nature Weekly
Short Notes on Nature Singapore

17 July 2016 | Field Trip | MacRitchie Forest |

Last week, I finally had a chance to take a relatively short walk at the MacRitchie Forest. This was the first forest walk that I did this year. I was grounded since the beginning of the year and was only able to walk around nearby parks. Needless to say, I was quite happy to be able to be out again in the wild though for only about 2.5 hours.

photo photo As it was in the early afternoon in a weekday and probably also due to the hot weather, human traffic was very light. The first insect that I managed to take some pictures was a Leaf-rolling Weevil (Family: Attelabidae). This happened to be the second time that I saw this unknown species of weevil; the first time was at Upper Seletar Reservoir area in July 2014. The added information on the current sighting was its host plant, Ixonanthes icosandra, where the weevil was found munching on a young leaf. In the previous occasion, it was seen on the leaf of Syzygium myrtifolium which was unlikely to be the host plant since no damage to the leaf was observed.

photo photo photo Ixonanthes icosandra was relatively common forest tree around that area. The elongated leaves of the young plants looked like those from Gordonia singaporeana and Lithocarpus lucidus. Earlier, I had mistaken it as another forest tree, Gomphia serrata. Another plant that I managed to unveil its identity was Trigonachras acuta. Actually, I had already took some pictures of its fallen orange fruits on the forest floor back in 2008 in Bukit Timah Nature Reserve but the leaves were not visible then as that tree was very tall. I had seen several of these fruitless tree along the Tree Top Walk trail as well quite a while back but was not able to secure an identity in the past.

photo Another interesting insect was a leafhopper, where a group of them were gathering on the leaf and stalk of a young Garcinia griffithii plant. Accompanying them were the Yellow Crazy Ant (Anoplolepis gracilipes). There were a total of 5 leafhoppers and 5 ants in the picture shown. One of the leafhoppers, the tiny one on the far right, was a nymph. In general, ants are good friends of the leafhoppers.

photo photo Despite the hot weather, there was a colony of mid-size orange-yellow mushrooms. They were gilled mushrooms under the Order Agaricales. The typical features of this group of mushrooms are a cap with gill-liked structure underneath that sit on top of a stem.

Below were some fruits from 4 forest plants encountered during the short walk: (1) Indorouchera griffithiana (White Grapper Climber), (2) Daemonorops grandis (Giant Devil Palm), (3) Urophyllum streptopodium, and (4) Chassalia curviflora (Curvedflower Chasalis).

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