Genus Subulitermes · 锥白蚁属

Morphology

The descriptions below are an adaptation of the original genus-level accounts; terms follow the meaning of the source, and the original is not transcribed verbatim.

Diagnostic characters

Alate with an oval head, fontanelle near the middle of the head, brain very well developed (Taf. III, Fig. 9), 1st tooth of the left mandible distinctly larger than the 2nd; soldier with mandibles entirely without an apical process, nasus narrowly cylindrical, antennae mostly 12-segmented, frontal profile almost straight, head capsule not constricted behind the antennal sockets. Holmgren states explicitly that precisely because the nasus of this genus is cylindrical and extremely narrow, Subulitermes cannot be regarded as the primitive type of the branch; it and Convexitermes both depart from it through their slender body and well-developed brain, except that the latter still retains a thick nasus. The systematic discussion also states that the whole Subulitermes branch has a large clypeus and places this genus at the end of that branch.

Alate

Head oval; fontanelle about at the middle of the head; brain (Gehirn) very well developed; clypeus about as long as half its width, or shorter and strongly raised, oval, pale yellow; 1st tooth of the left mandible distinctly larger than the 2nd; antennal segments relatively long.

Soldier

Mandibles without an apical process; the species are small, antennae 11–12-segmented, usually 12-segmented; nasus cylindrical, narrow; frontal profile almost straight; head capsule not constricted behind the antennal sockets.

Sources: Holmgren, N. 1912. Termitenstudien. 3. Systematik der Termiten. Die Familie Termitidae, Isoptera. Kungliga Svenska Vetenskapsakademiens Handlingar, 48(4): 59–62, 68–72., p. 59（有翅成虫检索表 B/a/b），p. 61（兵蚁检索表 cc），p. 68（系统学讨论） This text is an adaptation, not a verbatim transcription of the original.