Camponotus megalonyx

This species nests in the thickened part of rattan leaves (Korthalsia spp.) (Yamane et al., 2021). It is the sole member of the subgenus Myrmopalpella.

Identification
Yamane et al. (2021): Worker caste highly polymorphic (total body length: 4–8.5 mm). Worker with a more or less saddle-shaped propodeum and deep metanotal groove; antennal scape and tibiae of all legs with erect hairs; in larger workers, particularly entire body densely minutely punctate or coriaceous.

Distribution based on Regional Taxon Lists
Indo-Australian Region: Borneo, Indonesia, Malaysia. Oriental Region: India.

Nomenclature

 * . Camponotus (Myrmosphincta) megalonyx Wheeler, W.M. 1919e: 114 (s.w.) BORNEO (East Malaysia: Sarawak).
 * Stärcke, 1934: 24 (q.m.).
 * Combination in C. (Myrmopalpella): Stärcke, 1934: 30 (in text).
 * Status as species: Stärcke, 1934: 20 (redescription); Wheeler, W.M. 1936e: 217; Chapman & Capco, 1951: 237; Bolton, 1995b: 110; Karmaly & Narendran, 2006: 85.
 * Senior synonym of chalaconotus: Stärcke, 1934: 29; Wheeler, W.M. 1936e: 217 (in text); Chapman & Capco, 1951: 237; Bolton, 1995b: 111; Pfeiffer, et al. 2011: 37.
 * chalaconotus. Camponotus (Orthonotomyrmex) chalaconotus Menozzi, 1929c: 430, figs. 1, 2 (s.) (no state data, “without any precise indication of locality, but most probably from India (or Burma), since it came from the collection of the late Col. C.T. Bingham”).
 * [Misspelled as chalconotus by Chapman & Capco, 1951: 237.]
 * Junior synonym of megalonyx: Stärcke, 1934: 29 (provisional); Wheeler, W.M. 1936e: 217 (in text) ; Chapman & Capco, 1951: 237; Bolton, 1995b: 91.
 * dracocephalus. Camponotus (Tanaemyrmex) dracocephalus Stitz, 1938: 112, fig. 10 (q.) BORNEO (Indonesia: Kalimantan).
 * Status as species: Chapman & Capco, 1951: 245; Bolton, 1995b: 97; Pfeiffer, et al. 2011: 37.
 * Junior synonym of megalonyx: Yamane et al., 2021: 177.

References based on Global Ant Biodiversity Informatics

 * Chapman, J. W., and Capco, S. R. 1951. Check list of the ants (Hymenoptera: Formicidae) of Asia. Monogr. Inst. Sci. Technol. Manila 1: 1-327
 * Pfeiffer M.; Mezger, D.; Hosoishi, S.; Bakhtiar, E. Y.; Kohout, R. J. 2011. The Formicidae of Borneo (Insecta: Hymenoptera): a preliminary species list. Asian Myrmecology 4:9-58
 * Stitz H. 1938. Neue Ameisen aus dem indo-malayischen Gebiet. Sitzungsber. Ges. Naturforsch. Freunde Berl. 1938: 99-122.