Alocasia sinuata is a beautiful and exotic houseplant with uniquely shaped leaves that are a glossy, dark green color. Here are some care tips for this plant:

1. Light: Alocasia sinuata prefers bright, indirect light. Avoid exposing it to direct sunlight, as it can scorch the leaves.

2. Water: Water the plant when the top inch of soil feels dry to the touch. Water thoroughly, and allow any excess water to drain out of the bottom of the pot. Overwatering can lead to root rot, so make sure the soil has good drainage.

3. Humidity: Alocasia sinuata likes high humidity levels. You can increase humidity by misting the leaves with water, using a humidifier, or placing a tray of water near the plant.

4. Temperature: The ideal temperature range for this plant is between 60-75°F (16-24°C).

5. Soil: Alocasia sinuata prefers a well-draining potting mix that is rich in organic matter. You can use a mixture of peat moss, perlite, and vermiculite.

6. Fertilizer: Fertilize the plant once a month during the growing season (spring and summer) with a balanced, water-soluble fertilizer.

7. Pruning: Prune the plant to maintain its shape and remove any dead or yellowing leaves.

8. Support: Alocasia sinuata can grow quite tall and become top-heavy, so it may need support in the form of a stake or trellis.

9. Propagation: Alocasia sinuata can be propagated by division. Carefully separate the plant into two or more sections, making sure each section has roots and leaves, and plant them in separate pots.

Remember to keep your plant away from pets and children as it's toxic when ingested. Alocasia sinuata is a relatively low-maintenance plant that can add a touch of tropical beauty to your indoor garden.