Strumigenys lewisi

Nomenclature

Species: Strumigenys lewisi Cameron, 1886

Syntype: BMNH - ANTC20617 - CASENT0906000

External links

Diagnostic description

Diagnosis of worker among Antkey species

Head shape triangular. Antenna 6-sgemented. Antennal club 2-segmented. Antennal scapes not conspicuously short; easily extended beyond eye level. Antennal insertions at least partly covered by frontal lobes. Eyes medium to large (greater than 5 facets); situated on lower margin of scrobe. Frontal lobes do not obscure face outline between mandible and eye. Posterolateral corners of head unarmed, without spines. Lacking ventral notch anterior to eyes. Mandibles linear; armed with apical fork and 1 preapical tooth; evenly curved and lacking abrupt attenuation near insertion of preapical tooth. Pronotal spines absent. Propodeum armed with spines or teeth. Mesosoma lacking dense pelt of short hairs on dorsal surface. Waist 2-segmented. Petiole and postpetiole with distinct spongiform. Hairs on petiole, postpetiole and gaster flagellate. Appressed circular hairs do not cover face, mesosoma and waist segments.

Strumigenys lewisi can be separated from other introduced and commonly intercepted Strumigenys species by the following combination of characters: (1) mandibles linear; (2) mandibles with apical fork and 1 preapical tooth; (3) mandibles evenly curved and lacking abrupt attenuation near insertion of preapical tooth; (4) hairs on petiole, postpetiole and gaster flagellate; (5) mesosoma lacking dense pelt of short hairs on dorsal. This last character separates it from the similar looking S. godeffroyi.

Look alikes

Strumigenys godeffroyi, Strumigenys lanuginosa

Distribution

Click here for updated occurrence data and map on antmaps.org
Click here for updated occurrence data and map on GBIF.org

Lateral view of body, entire, adult worker. Photo by April Nobile, Antweb.org.	Dorsal view of body, entire, adult worker. Scale bar 0.5 mm long. Photo by April Nobile, Antweb.org.
Anterior view of head, adult worker. Photo by April Nobile, Antweb.org.	Lateral view of eye / ocellus, adult worker. Eye on lower margin of scrobe.
Lateral view of head, adult worker. The ventral margin of the head is entire and lacks a distinct notch just anterior to the eyes. Used in Antkey to separate Strumigenys godeffroyi, Strumigenys lanuginosa, Strumigenys lewisi and Strumigenys silvestrii from Strumigenys rogeri.	Anterior dorsal view of mandibles, adult worker. Mandibles evenly curved, lacking abrupt attenuation near insertion of preapical tooth. Photo by April Nobile, Antweb.org.
Anterior dorsal view of mandibles, adult worker. The mandibles are evenly curved, lacking abrupt attenuation near insertion of preapical tooth. Used in Antkey to separate Strumigenys godeffroyi and Strumigenys lewisi from Strumigenys lanuginosa.	Lateral view of thorax / mesosoma, adult worker. Mesosoma lacking dense pelt of short hairs on dorsal surface.
Lateral view of thorax / mesosoma, adult worker. The dorsum of the mesosoma lacking a dense pelt of short, semierect hairs. If there are any hairs other than the long flexuous ones, they are very sparse. Used in Antkey to separate Strumigenys lewisi from Strumigenys godeffroyi.