Genus Disjunctitermes · 间断白蚁属

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

Among Neotropical apicotermitines, like Anoplotermes banksi, A. pacificus and Hydrecotermes spp., it has a strongly inflated fore tibia, and an enteric valve without spines and without sclerotisation. It is closest to A. banksi but can be distinguished from it by the accessory (fourth) marginal tooth of the left mandible, the larger enteric valve seating and the more truncate end of P2; Hydrecotermes lacks a spherical mesenteric tongue.

Worker

Monotypic, small. Head capsule pale yellow, covered with about 100 setae of varying length; postclypeus moderately inflated; fontanelle almost indiscernible; antennae 14-segmented. The apical tooth and the first marginal tooth of the left mandible are widely separated and both long, clearly projecting beyond the line formed by the third marginal tooth and the molar prominence; above the molar prominence there is another accessory (fourth) marginal tooth, visible in both dorsal and ventral view. The apical tooth of the right mandible is far longer than the first marginal tooth, the third marginal tooth nearly symmetrical. The fore tibia is strongly inflated, about 3 times as long as its greatest width (at the middle). The mesenteric tongue is spherical. P2 enters through a large, stout, trilobed enteric valve seating, two lobes of which are visible through the body wall; the enteric valve consists of 6 slender, inflated pads facing the valve lumen; the posterior end of P2 (including the enteric valve) is truncate and extends about halfway into the seating. Measurements: species-level (Table 2, 12 workers from each of 11 colonies; holotype head width 0.64 mm).

Sources: Scheffrahn R. H.; Carrijo T. F.; Postle A. C.; Tonini F. 2017. Disjunctitermes insularis, a new soldierless termite genus and species (Isoptera, Termitidae, Apicotermitinae) from Guadeloupe and Peru. ZooKeys 665: 71–84. https://doi.org/10.3897/zookeys.665.11599, Disjunctitermes gen. n. — Diagnosis; Imago; Worker（ZooKeys 665: 71–84） This text is an adaptation, not a verbatim transcription of the original.