To cite this page, please use the following:
· For print: . Accessed
· For web:
It seems to me that of the 2 peninsular Indian forms, subsp. kanariensisHNS (fig. 30) and var. obscuriorHNS, that Forel assigned to A. orientalisHNS, at least the first one has a good chance of being a species apart, and I have raised it to species rank provisionally.
A. kanariensisHNS has a bright to dark red trunk and node, contrasting with the piceous or black gaster; the head may be red or infuscated. In kanariensisHNS, the front part of the petiolar nodal summit is more or less produced cephalad, and overhangs the anterior slope of the node, so that the slope is usually more or less distinctly concave, unfortunately a character not very well developed in the particular specimen drawn for fig. 30. The types of A. obscuriorHNS and A. orientalisHNS are black or nearly so, with partly ferruginous appendages, and the head may be lighter brownish around the corners; the nodes of these forms are broadly rounded above, not noticeably produced anteriorly, and the anterior slope is straight or convex as seen from the side. In kanariensisHNS, the first gastric tergum is coarsely and distinctly striate almost to the posterior margin, with coarse superimposed punctures, whereas in obscuriorHNS, at least, the punctures predominate, and the striae are indefinite or obsolete on the anterior first gastric tergum, while the posterior half of this tergum becomes more or less smooth and shining (satiny blue reflections on the gastric dorsum may often be seen in all 3 taxa).
The A. orientalisHNS type (MNHN-Paris), from Cochin China, has never been compared directly with the Indian forms. My brief notes made on it in 1963 indicate that orientalisHNS is much like the obscuriorHNS types before me in color and form, but that the sculpture in orientalisHNS may be more opaque over a wider area of the gastric dorsum than in obscuriorHNS. The wide geographic separation of the two forms (as presently known) dictates that they both be kept as provisional separate species, at least until we can compare them directly. More samples of these forms from SE Asia would of course also help in determining their status.