Sinonasutitermes trimorphus Li & Ping, 1986 三型华象白蚁

Recorded in Fauna Sinica

The morphological and biological accounts below are taken from Fauna Sinica and related literature; only structure and punctuation have been standardized here.

Morphology

Soldier

Soldiers of three forms. Head, antennae and pronotum reddish yellow, the nasus and the raised part of the pronotum brown, thoracic and abdominal tergites yellow, legs pale yellow; head and thoracic tergites hairless, abdominal tergites with a few minute hairs. Large form: head broadly circular, wider than long, the middle of the sides strongly bulging, the posterior margin broadly rounded; nasus stout and short, upturned in profile with the tip slightly higher than the posterior part of the head, concave in the middle; the apical spine of the mandibles short and small or merely a point-like projection. Antennae 13 segments, the third twice the second or longer, the second the shortest. The anterior half of the pronotum erect, the middle of the anterior margin slightly concave, the posterior margin without or with an indistinct notch; apical spurs 2:2:2, tarsi 4-segmented. Medium form: colour as in the large form, nasus longer, not upturned in profile, slightly concave in the middle, mandibles blunt or with a point-like projection; antennae 12–13 segments; the anterior margin of the pronotum with a slight incision. Small form: colour and pilosity as in the two preceding forms, head nearly circular, the posterior margin slightly flat, about as long as wide, the apex of the mandibles mostly with small sharp spines; antennae 11–12 segments; the anterior and posterior margins of the pronotum without distinct incisions.

Alate

Worker

The mandibles of the worker differ from those of the soldier: the apical tooth of the left mandible distinctly larger than marginal tooth 1, the cutting edge between the two marginal teeth straight; the apical tooth of the right mandible slightly larger than or nearly equal to marginal tooth 1, marginal tooth 2 blunt and rather close to marginal tooth 1, the molar plate with eight grooves.

Nymph

Abstract (from the source)

Biology

Distribution and locality

Mount Maozifeng, Nanxiong, Guangdong.

Taxonomic notes

Source: Huang Fusheng et al. (2000), Fauna Sinica, Insecta vol. 17, Isoptera, Science Press. (entry no. 448 in the original work) Entries are cited by their number in the original work.