Genus Rotunditermes · 圆白蚁属

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 very large compound eyes distinctly projecting from the sides of the head (Taf. III, Fig. 10), clypeus about as long as half its width or slightly shorter and often dark, 1st tooth of the left mandible about as long as the 2nd; soldier with a more or less distinct apical process on the mandibles, head capsule not constricted behind the antennal sockets, nasus short and cylindrical, head capsule in frontal view perfectly circular (Taf. III, Fig. 15). The short cylindrical nasus together with the perfectly circular head capsule makes the soldier easy to distinguish from Tumulitermes, which has a longer nasus and an oval head, and from Subulitermes, whose mandibles lack an apical process; the alate is distinguished from Diversitermes (medium-sized compound eyes) by its exceptionally large compound eyes.

Alate

1st tooth of the left mandible about as long as the 2nd; clypeus about as long as half its width or slightly shorter, often dark; compound eyes large to very large, projecting dorsally from the sides of the head; pronotum relatively large. Head shape and wing surface pilosity are not further delimited in the key in the original text, only compared through the plate (Taf. III, Fig. 10).

Soldier

Mandibles with a more or less distinct apical process; head capsule not constricted behind the antennal sockets; nasus short, cylindrical; head capsule perfectly circular (Tafel III, Fig. 15).

Sources: Holmgren, N. 1912. Termitenstudien. 3. Systematik der Termiten. Die Familie Termitidae, Isoptera. Kungliga Svenska Vetenskapsakademiens Handlingar, 48(4): 59–62, 68–72., p. 60（有翅成虫检索表 aa/bb/e/d），p. 61（兵蚁检索表 bb/c/dd） This text is an adaptation, not a verbatim transcription of the original.