To cite this page, please use the following:
· For print: . Accessed
· For web:
P. niger et vestitus pube cinerea ; thoraee spinis duabus acutis antice armato ; abdominis squamula spinis duabus brevibus armata ; pedibus ferrugineis.
Female. Length 51/2 lines. Black and densely clothed with cinereous pile, which has a silvery brightness in certain lights ; the mandibles shining black, and longitudinally striated ; the antennæ inserted at the sides of two prominent carinæ; the scape compressed, much broader than usual, with the apex widest and thinly covered with short pale glittering pubescence. Thorax : the spines at the lateral angles of the prothorax short, stout, and acute ; the mesothorax very convex, with an abbreviated shining carina in the middle anteriorly; the metathorax transverse, abruptly truncated, slightly concave in the middle above ; the legs ferruginous, with their articulations and tarsi fuscous. Abdomen ovate ; the peduncle subtriangular, a stout, short, acute spine at the lateral angles.
Worker. Length 41/4 lines. Only differs in having the thorax flattened above, with the lateral margins slightly raised ; the scape of the antennæ compressed, as in. the female.
Type specimens: syntype of Polyrhachis compressicornis: casent0901825