Chilocosmia

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Chilocosmia
Scientific classification OOjs UI icon edit-ltr.svg
Kingdom: Animalia
Phylum: Arthropoda
Subphylum: Chelicerata
Class: Arachnida
Order: Araneae
Infraorder: Mygalomorphae
Family: Theraphosidae
Genus: Chilocosmia
Schmidt & von Wirth, 1992 [1]
Type species
C. dichromata
Schmidt & von Wirth, 1992
Species

1, see text

Chilocosmia is a genus of tarantulas that was first described by Schmidt & von Wirth in 1992. [2] The genus was considered a junior synonym of Orphnaecus in 2012, [3] but was re-classified as its own genus in 2025. [4] It is a monotypic genus containing the single species, Chilocosmia dichromata. [1]

Contents

Taxonomy

This species was originally described as Chilocosmia dichromata by Schmidt & von Wirth, in 1992. [1] In 2005, Peters changed the name to Selenocosmia dichromatus, [5] and in 2012, West, Nunn & Hogg placed Chilocosmia (along with C. dichromatus) as a junior synonym of Orphnaecus, creating the combination Orphnaecus dichromatus. [6] In 2025, Acuña, et al., found the genera sufficiently different to remain separate, re-classifying the species as Chilocosmia dichromata. [4]

Characteristics

C. dichromata has 10 large (and some small) teeth on the chelicerae in a row. It also has 4-5 rows of strikers (also on the chelicerae), that are basally thickest and longest. The 3 rows 10 unequal coxal strikers are clavate (scimitar shaped) and arranged in a semicircular shape. The cephalothorax, coxae and trochanter are reddish-brown and the abdomen and other leg segments are brown. [7]

References

  1. 1 2 3 "Gen. Chilocosmia Schmidt & von Wirth, 1992". World Spider Catalog Version 26.0. Natural History Museum Bern. 2025. doi:10.24436/2 . Retrieved 8 November 2025.
  2. ↑ Schmidt, G; von Wirth, V (1992). "Beschreibung des Weibchens von Chilocosmia dichromata gen.n. sp.n. und des Männchens von Chilocosmia arndsti (Schmidt & von Wirth) 1991 (Araneida: Theraphosidae: Selenocosmiinae)". Arachnologischer Anzeiger. 3 (11): 9–16.
  3. ↑ West, R. C.; Nunn, S. C.; Hogg, S. (2012). "A new tarantula genus, Psednocnemis, from west Malaysia (Araneae: Theraphosidae), with cladistic analysis and biogeography of Selenocosmiinae Simon 1889". Zootaxa. 3299: 23. doi:10.11646/zootaxa.3299.1.1.
  4. 1 2 Acuña, Darrell C; Dumbrique, Maria Mikaela U; Ranido, Maricel C; Ragasa, Lorenz Rhuel P; Noriega, Charles Nylxon C; Mayor, Anna Beatriz R; Florendo Jr, Gregorio Antonio; Fadri, Mary Jane A; von Wirth, Volker; Santiago-Bautista, Myla R; Guevarra Jr, Leonardo A (31 Mar 2025). "Taxonomic revalidation of Selenobrachys Schmidt, 1999 and Chilocosmia Schmidt & von Wirth, 1992 based on morphological and molecular analyses (Araneae, Theraphosidae), with the description of a new species from Romblon Island, Philippines". ZooKeys. 1233 (5126): 139–193. doi: 10.3897/zookeys.1233.128056 . Retrieved 8 November 2025.
  5. ↑ Orphnaecus dichromatus Schmidt & von Wirth, 1991. World Spider Catalog. Natural History Museum of Bern. Retrieved February 28, 2016.
  6. ↑ West, R. C., Nunn, S. C. & Hogg, S. (2012). A new tarantula genus, Psednocnemis, from west Malaysia (Araneae: Theraphosidae), with cladistic analysis and biogeography of Selenocosmiinae Simon 1889. Zootaxa 3299: 1-43
  7. ↑ Schmidt, G. & Wirth, V. von (1992b). Beschreibung des Weibchens von Chilocosmia dichromata gen.n. sp.n. und des Männchens von Chilocosmia arndsti (Schmidt & von Wirth) 1991 (Araneida: Theraphosidae: Selenocosmiinae). Arachnologischer Anzeiger 3(11): 9-16.
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