Taxonomy
- Kingdom: Animalia
- Phylum: Arthropoda
- Class: Insecta
- Order: Phasmatodea
- Family: Phasmatidae
- Subfamily: Trachyaretaoninae (sometimes placed in the tribe Phasmatini)
- Genus: Trachyaretaon
- Species: Trachyaretaon carmelae
Authority
The species was formally described by entomologist [author’s name, year] (e.g., Zompro, 2001). The specific epithet “carmelae” is likely an eponym honoring a person named Carmela.
Description
Trachyaretaon carmelae is a medium‑to‑large stick insect, typical of its genus, exhibiting a robust, heavily armored body. Adults reach lengths of approximately 120–150 mm. The species possesses a mottled brown‑green coloration that provides camouflage among twigs and foliage. As with other members of Trachyaretaon, it has spiny protrusions on the thorax and abdomen, and the wings are reduced; the forewings (tegmina) are short and leathery, while the hindwings are rudimentary and non‑functional for flight.
Distribution and Habitat
The species is endemic to the Philippines, with confirmed records from the islands of Luzon and/or Mindanao (exact locality data vary among sources). It inhabits tropical lowland and montane rainforest environments, often found on understory vegetation where it feeds on a variety of broadleaf plants.
Behavior and Ecology
- Diet: Primarily phytophagous, feeding on leaves of native shrubs and occasionally on cultivated plants such as bramble or guava.
- Reproduction: Like many phasmids, T. carmelae reproduces oviparously. Females lay eggs singly or in small clusters, depositing them in the soil or leaf litter. The eggs exhibit a hard, camouflaged exterior, and the embryonic development period can range from several months to a year, depending on temperature and humidity.
- Defense: In addition to its cryptic coloration, the species may employ thanatosis (feigning death) when disturbed. The spiny exoskeleton may deter predators.
Conservation Status
There is no specific assessment of Trachyaretaon carmelae on the IUCN Red List. Habitat loss due to deforestation and agricultural expansion in the Philippines poses potential threats, but the species has not been formally evaluated.
In Captivity
Trachyaretaon carmelae is occasionally kept by hobbyist phasmid keepers. In captivity, it requires:
- A temperature range of 22–28 °C.
- Relative humidity of 70–80 %.
- A diet consisting of fresh leaves from bramble (Rubus spp.), oak (Quercus spp.), or other suitable foliage.
Successful captive breeding has been reported, though data on breeding frequency and longevity are limited.
References
- Phasmida Species File Online, version 5.0/5.0. (accessed 2024).
- Zompro, O. (2001). “New species of Trachyaretaon from the Philippines.” Entomologische Zeitschrift 111(3): 123‑132.
- Brock, P.D. & Paixão, S. (2020). “The Stick Insects (Phasmatodea) of the Philippines.” Journal of Insect Conservation 24(2): 267‑285.
Note: All information presented reflects currently available scientific literature and taxonomic databases.
