6 documents found, page 1 of 1
Morphology of Richards' gland in the wasp Metapolybia docilis
Billen, Johan; Noll, Fernando B. [UNESP]Made available in DSpace on 2022-04-28T22:49:09Z (GMT). No. of bitstreams: 0 Previous issue date: 2011-07-18; Richards' gland in the epiponine wasp Metapolybia docilis occurs at the anterior side of the 5 th abdominal sternite, and is formed by approx. 360 secretory cells. The cells discharge their secretory products through accompanying duct cells into a reservoir that is formed by the invaginated intersegment...
The head anatomy of Protanilla lini (Hymenoptera: Formicidae: Leptanillinae), w...
Richter, Adrian; Garcia, Francisco Hita; Keller, Roberto A; Billen, Johan; Katzke, Julian; Boudinot, Brendon E.; Economo, Evan P.; Beutel, Rolf G.The hypogaeic ant subfamilies Leptanillinae and Martialinae likely form the sister group to the remainder of the extant Formicidae. In order to increase the knowledge of anatomy and functional morphology of these unusual and phylogenetically crucial ants, we document and describe in detail the cranium of a leptanilline, Protanilla lini Terayama, 2009. The mandibular articulation of the species differs greatly f...
Comparative analysis of worker head anatomy of Formica and Brachyponera (Hymeno...
Richter, Adrian; Garcia, Francisco H.; Keller, Roberto A.; Billen, Johan; Economo, Evan P.; Beutel, Rolf GeorgAn organism’s morphology plays a crucial role in its interactions with its environment. Therefore, comparative anatomical analysis is a critical basis to understanding the ecology, behavior, and evolution. While our knowledge of ant internal anatomy has considerably improved in recent years, it is still highly fragmentary, and many evolutionary questions remain unsolved. The current work is a contribution of a ...
A novel exocrine structure of the bicellular unit type in the thorax of termites
Gonçalves, Teresa Telles; DeSouza, Og; Billen, JohanStudying the thorax of some Termitidae species, we found two pairs of hitherto unknown lateral glands in the mesothorax and metathorax of both workers and soldiers. The glands consist of distinct clusters of class 3 secretory cells accompanied by their duct cells, located in the upper lateral portion of the thoracic wall. Ultrastructural observations reveal numerous mitochondria, a well-developed Golgi apparatu...
Wax gland size according to worker age in Friesella schrottkyi
Lopes Justino, Cintia Eleonora [UNESP]; Noll, Fernando Barbosa [UNESP]; Mateus, Sidnei; Billen, JohanMade available in DSpace on 2018-11-26T17:52:00Z (GMT). No. of bitstreams: 0 Previous issue date: 2018-06-01; UNESP; KU Leuven; Wax production is one of the stingless bee activities that is related with nest building. We studied wax gland size in workers of the stingless bee Friesella schrottkyi at nine different ages: 0, 4, 5, 8, 10, 13, 14, 15, and 20 days. In the large majority of workers, we observed a cons...
Skeletomuscular adaptations of head and legs of Melissotarsus ants for tunnelli...
Khalife, Adam; Keller, Roberto A.; Billen, Johan; Hita Garcia, Francisco; Economo, Evan P.; Peeters, ChristianBackground While thousands of ant species are arboreal, very few are able to chew and tunnel through living wood. Ants of the genus Melissotarsus (subfamily Myrmicinae) inhabit tunnel systems excavated under the bark of living trees, where they keep large numbers of symbiotic armoured scale insects (family Diaspididae). Construction of these tunnels by chewing through healthy wood requires tremendous power, but...