Atlantitermes ibitiriguara Fontes, 1979 具锯阿特拉斯白蚁

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1. Morphology of the alate and worker mandibles of the soil-feeding nasute termites (Isoptera, Termitidae, Nasutitermitinae) from the neotropical region

   Luiz Roberto Fontes · 1986 · Revista Brasileira de Zoologia

   摘要

   The morphology of the mandibles of the alates and workers of the 8 soil-feeding genera with nasute soldiers from the Neotropical Region is studied. Three mandibular patterns are recognized: (1) Convexitermes, Atlantitermes, Araujotermes, Coatitermes, Subulitermes and Agnathotermes have mandibles with complete marginal dentition and no reduced teeth, (2) Angularitermes has mandibles with complete marginal dentition but two teeth are vestigial, and in (3) Cyronotermes the marginal dentition is incomplete. A set of other characteristics is associated with each of these mandibular patterns. Intraspecific variation are registered, either between the alate and the worker castes of all genera, as between the worker types of the dimorphic worker caste of the genera with complete and developed marginal dentition. Such dimorphism was previously unreported for the soil-feeding Nasutitermitinae; the soldier arises from one worker type.

2. Key to the soldiers ofAtlantitermesFontes 1979, with a new species from Brazil (Isoptera Termitidae Nasutitermitinae)

   Reginaldo Constantino, Og Francisco Fonseca de Souza · 1997 · Tropical Zoology

   摘要

   A soldier-based key for the identification of the species of the neotropical termite genus Atlantitermes Fontes 1979 is presented. The diagnostic characters for the genus are reviewed and discussed, and the upturned nasus is excluded because it is not present in the soldier of every species. A. stercophilus n. sp., from the cerrado vegetation of Minas Gerais, Brazil, is described and illustrated. A. osborni (Emerson 1925) is recorded for the first time in the cerrado vegetation of southeastern Brazil. Drawings of the soldier of A. kirbyi (Snyder 1926) are presented for the first time.

3. Morphology of the worker digestive tube of the soil-feeding nasute termites (Isoptera, Termitidae, Nasutitermitinae ) from the neotropical region

   Luiz Roberto Fontes · 1986 · Revista Brasileira de Zoologia

   摘要

   The morphology of the parts and the configuration in situ of the worker digestibe tube of the 8 soilfeeding genera with nasute solidiers from the Neotropical Region are studied. All genera showed a reduced or incomplete gizzard armature, a tubular first proctodeal segment terminating in the left half of the abdomen, an enteric valve armature with trilateral symmetry and often with strong spines, a paunch of two large sections separated by a constriction, and a long colon. In addition, a mixed segment at the mesenteron-proctodeal junction is absent in Convexitermes, Atlantitermes, Araujotermes, Coatitermes, Subulitermes and Agnathotermes, and present in Cyranotermes and Angularitermes, the latter having also a gizzard armature stronger than usual in the soilfeeding nasutes. The coiling of the gut and the morphology of some gut parts provide a good means for the identification of undissected workers of all genera.

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