Neotermes binovatus Han, 1984 双凹新白蚁

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

Head of the soldier red-brown, mandibles dark brown and paler at the base, antennal segments 1 to 3 brown and the remaining segments slightly paler; labrum and postmentum yellowish brown, the anterior margin of the pronotum brown, thorax, abdomen and legs greyish yellow. Head capsule rectangular, the lateral margins nearly parallel, the posterior margin broadly rounded; frons slightly inclined forwards, slightly concave in the middle, with a small symmetrical round pit on each side above it. Eyes oval, small, the distance from the eye to the antennal socket slightly shorter than the long diameter of the eye, ocelli absent. Antennae with 14 to 15 segments, the first segment thick and long, segment 3 distinctly longer than segment 2 or 4. Postclypeus flat, nearly rectangular; anteclypeus nearly trapezoidal; labrum nearly square, the anterior margin rather broadly rounded, with a few long hairs on the anterior margin and the surface. Mandibles stout, the base slightly swollen, the length about half the head capsule (to the mandibular base); the outer margin rather straight, the apex slightly curved inwards. Left mandible with five marginal teeth, the first and second nearly equal in length, the first large and blunt, the second nearly triangular, the third and fourth shortest and equal in length with a deep concavity between them, the fifth slightly longer and nearly triangular; right mandible with two marginal teeth, slightly uneven between the first tooth and the apical tooth, the distance between them about twice the distance from the first marginal tooth of the left mandible to the apical tooth, the two teeth almost equal in length, the first with a longer posterior margin forming an unequal triangle. The anterior end of the postmentum rather wide, the lateral margins slightly concave at the middle, divided into anterior and posterior lobes, the anterior lobe distinctly wider than the posterior lobe, the middle part slender, the posterior end rather swollen, the anterior margin slightly rounded and the posterior margin wavy. Pronotum nearly rectangular, slightly wider than the head capsule, the anterior margin broadly concave, the lateral margins broadly rounded, the posterior margin nearly straight. The apex of each tibia with three spurs, apical tibial spurs 3:3:3, tarsi 4-segmented.

Alate

Head of the alate brown, compound eyes pale brown, ocelli semi-transparent, antennal segments 1 to 3 brown and the rest paler, thorax, abdomen and legs deep yellow, wings pale yellow, the veins deep yellow, the body covered with sparse hairs. Head nearly square, the posterior lateral corners broadly rounded, the posterior margin nearly straight, the head width (including the eyes) slightly greater than the head length (to the mandibular base); frons slightly inclined forwards, with a shallow pit in the middle and a small round pit on each side of it, the Y-shaped suture indistinct. Compound eyes large and round, slightly protruding; ocelli oval, situated above the compound eyes and close to them. Antennae with 16 to 19 segments, the first segment thick and long, the second shorter than the first and equal to or slightly shorter than the third, the fourth shortest, the terminal segment short and small. Postclypeus nearly rectangular, the anterior margin rather straight and with long hairs; anteclypeus trapezoidal, greyish white; labrum wide and short, nearly rectangular, the anterior margin rather straight and with long hairs. The left mandible with two marginal teeth, the apical tooth slightly longer than the marginal teeth, the second marginal tooth slightly shorter than the first; the right mandible also with two, the apical tooth slightly longer, the second slightly shorter than the first. Pronotum nearly rectangular, with sparse long and short hairs, distinctly wider than the head capsule, the anterior margin broadly concave without a median notch, the posterior margin nearly straight. Forewing scale longer than the hindwing scale; subcosta short, its apex connected with the cubitus; radius meeting the cubitus well before the middle of the wing; radial sector extending to the wing apex with six to seven branches, running close and parallel to the media, with reticulate veins between the two, media and cubitus rather widely separated. Hindwing scale smaller, cubitus and subcosta fused along the anterior margin; radius meeting the cubitus about at the middle of the wing; radial sector extending to the wing apex, media separating from the radial sector at about one quarter of the wing base and running parallel to the apex. Legs slender with sparse hairs, the apex of the tibia with three spurs, apical tibial spurs 3:3:3. Abdomen slender, cerci with two segments.

Worker

Head, pronotum and legs of the worker pale yellow, the abdomen darker. Head nearly circular, the eyes represented only by indistinct pale spots. Antennae with 13 to 14 segments, the first segment longest, segment 3 shorter than segment 2, segments 4 and 5 shortest, the following segments gradually slightly longer, the terminal segment short and small. Postclypeus flat, the anterior margin with long hairs; anteclypeus trapezoidal; labrum nearly square, wide anteriorly and narrow posteriorly, the anterior margin rather straight and with long hairs. Mandibles similar to those of the alate. Pronotum nearly rectangular, distinctly wider than the head capsule, the anterior margin broadly concave, the posterior margin nearly straight. Legs slender, the apex of the tibia with three spurs, apical tibial spurs 3:3:3, tarsi 4-segmented.

Nymph

Abstract (from the source)

Biology

Distribution and locality

Lehui, Hainan.

Taxonomic notes

Source: Huang Fusheng et al. (2000), Fauna Sinica, Insecta vol. 17, Isoptera, Science Press. (entry no. 50 in the original work) Entries are cited by their number in the original work.