Asagarotermes coronatus Sands, 1972 冠毛无剑白蚁

Morphology

The description below is paraphrased from the original or a later revision, by caste; the source is cited at the end.

Diagnostic characters

The alate has narrow meso- and metanotal constrictions, and in the key runs closest to Anenteotermes and to group I of Astalotermes. Apical tooth length is comparable to that of Aganotermes and Amicotermes, but in the latter two the left accessory marginal tooth is clearly free of the molar prominence, the ocellus is closer to the compound eye, and the postclypeus is more inflated. The worker enteric valve inner pads bear no spines other than a single spiny sclerotised crown band, a condition unique to this genus.

Worker

Large, W 0.85–0.88 mm. Fore tibia weakly inflated, Ti/Tw 4.40–4.49, with 3 apical spurs, the third about half the length of the other two. Mandibular apical tooth very long, La/Li 0.96–0.99, Ra/Ri 1.11–1.16; the proximal end of the left accessory marginal tooth just free of the molar prominence; the apex of right marginal tooth 1 distinctly behind the line joining the apical tooth and marginal tooth 2, the marginal teeth with equal anterior margins. The midgut–hindgut overlap is about 1.5 times the midgut width at the insertion of the Malpighian tubules, the anterior end of the hindgut lying within the Malpighian knot. Enteric valve seat almost without lobes, effectively a rim, sessile, attached to the second hindgut pouch, lateral in the unopened abdomen; the enteric valve inner pads weak, unclerotised, without spines, each with only a narrow, strongly sclerotised spiny crown band encircling its middle.

Alate

Medium-sized, W 1.03–1.10 mm. Fore tibia with 3 apical spurs, the third almost as large as the other two. Mandibular apical tooth relatively long, La/Li 0.78–0.80, Ra/Ri 1.09–1.18; the proximal end of the left accessory marginal tooth just free of the molar prominence; right mandibular apical tooth and marginal tooth apices about in line, marginal tooth 1 with the anterior margin slightly longer than that of marginal tooth 2, almost equal. Meso- and metanotal plates narrow at the constriction, M/W 0.20–0.33, transverse suture strong. Ocellus relatively close to the compound eye; postclypeus relatively inflated.

This genus is monotypic, containing only this species; the following is the genus-level description based on the original literature; species-level measurements and intraspecific variation are given in the original.