Schedorhinotermes magnus Tsai & Chen, 1963 大长鼻白蚁

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 two forms. Major soldier: the corresponding part of the left mandible bears another large tooth, and from the middle to the posterior part another small blunt tooth; labrum hexagonal, slightly wider than long, widest at the posterior third, the anterior margin incised backwards in the middle into two lobes. Fontanelle distinct, situated slightly behind the mid-point between the two antennal sockets, the longitudinal groove in front of it running straight to the labral tip, its anterior margin with a row of fine hairs. Antennae 17 segments, the second and third short and cylindrical and equal in length, the fourth and fifth bead-like and nearly as long as these, the terminal segment slightly narrower. Narrowest part of the postmentum near the posterior end. Pronotum much narrower than the head, its anterior margin rather broad and projecting forwards in the middle with a central incision, the posterior margin slightly narrower, the posterior lateral corners large and rounded, the middle of the posterior margin concave; its width equal to that of the meso- and metanotum, or the mesonotum slightly narrower and the metanotum slightly wider; legs long. Minor soldier: body deep yellow throughout, the head darkest. Head rather narrow and long, widest behind the antennal sockets, the lateral margins straight and gradually converging anteriorly, the posterior margin convexly rounded; in profile the head is flattened with the top slightly arched. Mandibles slender and long, the posterior section straight and the anterior section incurved; before the mid-point of the left mandible two teeth with their points directed forwards, and a single tooth at the corresponding position on the right mandible. Labrum elongate, broader at the posterior end, contracted into a waist before the middle and widening again anteriorly; the apex and the anterior margin of the transparent area rather deeply incised and divided into two semicircular lobes, with a longitudinal groove on the dorsal surface in the middle. Postclypeus rather long and trapezoidal. Antennae 15 segments, the second and third equal in length and cylindrical, the following segments gradually becoming bead-like.

Alate

Worker

Head of the worker pale yellow, thorax, abdomen and legs white, the abdomen sometimes faintly showing the colour of the gut contents through the cuticle; body densely covered with short hairs. Head squarish, wider than long, the sides parallel. Postclypeus raised, twice as wide as long. Antennae 16–17 segments: with 16 segments the third is equal in length to the second and twice as long as the fourth; with 17 segments the third, fourth and fifth are equal and shortest, and the following segments gradually enlarge into rounded beads. Anterior half of the pronotum erect like a fan, the middle of its posterior margin slightly concave forwards; mesonotum rather broad; metanotum widest.

Nymph

Abstract (from the source)

Biology

Distribution and locality

Guangxi (Dongxing); Yunnan (Mengla, Jinping, altitude 580–680 m; Hekou, 90 m; Nanxi; Jinghong, 500 m; Menghan).

Taxonomic notes

Source: Huang Fusheng et al. (2000), Fauna Sinica, Insecta vol. 17, Isoptera, Science Press. (entry no. 75 in the original work) Entries are cited by their number in the original work.