Crematogaster yappi

Crematogaster yappi
Scientific classification
Kingdom:	Animalia
Phylum:	Arthropoda
Class:	Insecta
Order:	Hymenoptera
Family:	Formicidae
Subfamily:	Myrmicinae
Tribe:	Crematogastrini
Genus:	Crematogaster
Species:	C. yappi
Binomial name
Crematogaster yappi Forel, 1901 Specimen Labels

This species is known only from the type locality in Malaysia (Peninsula).

Identification

Hosoishi and Ogata (2012) - This species can be easily distinguished from similar Asian Crematogaster species by its undeveloped propodeal spines.

Keys including this Species

• Key to Crematogaster brevis group workers

Distribution

Latitudinal Distribution Pattern

Latitudinal Range: 3.9° to 3.9°.

North Temperate	North Subtropical	Tropical	South Subtropical	South Temperate

• Source: AntMaps

Distribution based on Regional Taxon Lists

Indo-Australian Region: Malaysia (type locality), Singapore.

Distribution based on AntMaps

Distribution based on AntWeb specimens

Check data from AntWeb

Countries Occupied

Number of countries occupied by this species based on AntWiki Regional Taxon Lists. In general, fewer countries occupied indicates a narrower range, while more countries indicates a more widespread species.

Estimated Abundance

Relative abundance based on number of AntMaps records per species (this species within the purple bar). Fewer records (to the left) indicates a less abundant/encountered species while more records (to the right) indicates more abundant/encountered species.

Nomenclature

The following information is derived from Barry Bolton's Online Catalogue of the Ants of the World.

• yappi. Crematogaster yappi Forel, 1901e: 374 (w.) WEST MALAYSIA.
  • Type-material: lectotype worker (by designation of Hosoishi & Ogata, 2012: 28), 5 paralectotype workers.
  • Type-locality: lectotype Malaysia: Peninsula, Kedah, Gunong Inas (R.H. Yapp); paralectotypes with same data.
  • Type-depositories: MHNG (lectotype); MHNG, NHMB (paralectotypes).
  • Combination in C. (Acrocoelia): Emery, 1922e: 152;
  • combination in C. (Crematogaster): Bolton, 1995b: 166.
  • Status as species: Forel, 1903a: 683; Emery, 1922e: 152; Chapman & Capco, 1951: 94; Bolton, 1995b: 165; Hosoishi & Ogata, 2012: 28 (redescription); Wang, W.Y., Soh, et al. 2022: 79.
  • Distribution: Malaysia (Peninsula), Singapore.

Unless otherwise noted the text for the remainder of this section is reported from the publication that includes the original description.

Description

Worker

Hosoishi and Ogata (2012) - HW 0.65-0.74; HL 0.66-0.75; CI 94-105; SL 0.48-0.54; SI 70-77; EL 0.11-0.15; PW 0.34-0.4; WL 0.71-0.81; PSL 0; PtL 0.18-0.22; PtW 0.21-0.24; PtH 0.12-0.15; PpL 0.12-0.14; PpW 0.17-0.2; PtHI 67-74; PtWI 105-111; PpWI 129-167; WI 77-90 (Lectotype and five paralectotype workers measured).

Compound eyes slightly projecting from lateral margin of head. Scape reaching posterior corner of head, the scape with standing setae.

Anterior margin of pronotal collar almost straight in dorsal view. Metanotal groove concave in lateral view. Propodeal spines undeveloped. Anterior margin of metapleural gland bulla almost reaching anterior margin of propodeal spiracle.

Petiole in dorsal view broader anteriorly than posteriorly. Postpetiole weakly bilobed, but without a distinct longitudinal median sulcus. Subpetiolar and subpostpetiolar processes undeveloped.

Dorsal surface of head generally smooth and shining, but the lower portion near clypeal margin with longitudinal rugulae. Clypeus relatively smooth, but with feeble rugulae. Dorsal face of mesosoma almost smooth and shining. Dorsolateral face of pronotum smooth in dorsal view. Lateral surface of pronotum smooth and shining. Mesopleuron relatively smooth, but with feeble rugulae on the higher portion.

Fourth abdominal tergite with sparse standing setae.

Type Material

Hosoishi and Ogata (2012) - LECTOTYPE worker (bottom specimen of three on one pin, Musee d'Histoire Naturelle Genève worker) (by present designation) and five paralectotype workers from MALAYSIA: Gunung Inas, Kedah (M. R. H. Yapp) (MHNG, Naturhistorisches Museum, Basel) [examined].

References

• Emery, C. 1922c. Hymenoptera. Fam. Formicidae. Subfam. Myrmicinae. [part]. Genera Insectorum 174B: 95-206 (page 152, Combination in C. (Acrocoelia))
• Forel, A. 1901j. Variétés myrmécologiques. Ann. Soc. Entomol. Belg. 45: 334-382 (page 374, worker described)
• Hosoishi, S. & Ogata, K. 2012. Revision of the Crematogaster brevis complex in Asia (Hymenoptera: Formicidae). Zootaxa. 3349:18-30.
• Wang, W.Y., Soh, E.J.Y., Yong, G.W.J., Wong, M.K.L., Benoit Guénard, Economo, E.P., Yamane, S. 2022. Remarkable diversity in a little red dot: a comprehensive checklist of known ant species in Singapore (Hymenoptera: Formicidae) with notes on ecology and taxonomy. Asian Myrmecology 15: e015006 (doi:10.20362/am.015006).

References based on Global Ant Biodiversity Informatics

• Forel A. 1903. Les Formicides de l'Empire des Indes et de Ceylan. Part X. J. Bombay Nat. Hist. Soc. 14: 679-715.