Technomyrmex albipes group

The following is based on Bolton, 2007.

Species

 * Technomyrmex albipes
 * Technomyrmex antonii
 * Technomyrmex australops
 * Technomyrmex brunneus
 * Technomyrmex butteli
 * Technomyrmex cedarensis 
 * Technomyrmex certus 
 * Technomyrmex cheesmanae
 * Technomyrmex curiosus
 * Technomyrmex difficilis
 * Technomyrmex elatior
 * Technomyrmex fisheri
 * Technomyrmex fornax
 * Technomyrmex furens
 * Technomyrmex hades
 * Technomyrmex hostilis
 * Technomyrmex indicus
 * Technomyrmex innocens
 * Technomyrmex jocosus
 * Technomyrmex madecassus
 * Technomyrmex mayri
 * Technomyrmex menozzii
 * Technomyrmex mixtus
 * Technomyrmex modiglianii
 * Technomyrmex moerens
 * Technomyrmex myops
 * Technomyrmex nigriventris
 * Technomyrmex nitens
 * Technomyrmex pallipes
 * Technomyrmex pluto
 * Technomyrmex prevaricus
 * Technomyrmex quadricolor
 * Technomyrmex rotundiceps
 * Technomyrmex rusticus
 * Technomyrmex semiruber
 * Technomyrmex setosus
 * Technomyrmex sophiae
 * Technomyrmex subgracilis
 * Technomyrmex tonsuratus
 * Technomyrmex vapidus
 * Technomyrmex vitiensis
 * Technomyrmex yamanei

Description
Worker. Palp formula 6,4. Anterior clypeal margin with a shallow median impression or a small notch (Technomyrmex modiglianii complex). Frontal carinae with setae present, usually -3 along each carina. Pronotum usually with at least one pair of setae (only very rarely absent). Propodeal dorsum without setae. Gastral tergites 1 - 4 with setae present, usually numerous and conspicuous (absent only in Technomyrmex curiosus). Mesosoma relatively short and compact, the mesonotum never with a constricted or elongated appearance in dorsal view or in profile. Predominant sculpture everywhere on head and body finely, densely microreticulate or reticulate-shagreenate, only rarely glassy smooth (Technomyrmex sophiae complex). Ergatoid morphological intercastes are present between true workers and true (alate) queens. Apterous (ergatoid) as well as alate males are produced. Colony reproductive strategy of this group is apparently unique in Formicidae (see outlines under Technomyrmex brunneus and Technomyrmex difficilis.

Complexes
A number of complexes of related species can be isolated within the group. The Afrotropical species Technomyrmex rusticus is known only from a worker-queen intercaste and does not fit any complex given below.

T. sophiae complex
Technomyrmex furens, Technomyrmex nitens, Technomyrmex quadricolor, Technomyrmex sophiae

Characterised within the group by the loss of the usual shagreenate/microreticulate sculpture, especially on the head, pronotum and first gastral tergite, leaving at least the head glassy smooth. The propodeum is bluntly but quite narrowly rounded and on the dorsum of the head setae are not restricted to the frontal carinae. Restricted to Queensland, Australia. Because of the lack of sculpture these species resemble the Technomyrmex strenuus group, but members of that group always have setae present on the propodeal dorsum.

T. modiglianii complex
Technomyrmex elatior, Technomyrmex modiglianii, Technomyrmex yamanei

The anterior clypeal margin has a relatively conspicuous median notch that is deeper and more obvious than in any other complex of the group) where the margin has at most a shallow indentation medially. The posterior margin is broadly emarginate across its width in full-face view. Widespread in the Oriental and Malesian regions.

T. semiruber complex
Technomyrmex hostilis, Technomyrmex menozzii, Technomyrmex semiruber

Afrotropical species in which the propodeal dorsum rounds broadly and evenly into the declivity; the true dorsum is very short and forms the anterior part of a broad curve that extends to the propodeal spiracle.

T. cheesmanae complex
albicoxis, Technomyrmex cheesmanae, mixtus, Technomyrmex prevaricus, Technomyrmex tonsuratus

Five species from New Guinea, with cheesmanae also occurring in Queensland, in which the propodeum in profile is rounded rather than angular.

T. albipes complex
albipes, brunneus, butteli, curiosus, Technomyrmex hades, moerens, nigriventris, Technomyrmex pluto, vitiensis

Setae on the dorsum of the head are restricted to the frontal carinae, none occurs posterior to this. Propodeum in profile is acutely to bluntly angular between dorsum and declivity; dorsum is short. Extremely widespread. This complex contains two of the most successful tramp species, albipes and vitiensis.

T. cedarensis complex
antonii, Technomyrmex australops, Technomyrmex cedarensis

Dorsum of head with a single pair of setae behind the level of the eyes, the latter large and located relatively posteriorly on the head capsule. Propodeal dorsum short and meeting the declivity in an angle. Restricted to Queensland and New South Wales in Australia.

T. pallipes complex
Technomyrmex certus, difficilis, fisheri, Technomyrmex fornax, indicus, innocens, jocosus, madecassus, mayri, Technomyrmex myops, pallipes, Technomyrmex rotundiceps, Technomyrmex setosus, Technomyrmex subgracilis, Technomyrmex vapidus

Setae on dorsum of head not resttricted to frontal carinae, at least one pair present posterior to level of eyes and often more. Eyes smaller and located more anteriorly than in the preceding group. Propodeal dorsum short; junction of dorsum and declivity angulate to bluntly rounded. This complex is grounded for convenience, the residue that remains after other species have been accounted for.

Related Pages

 * Technomyrmex
 * Technomyrmex'' species groups