Novel antennal lobe substructures revealed in the small hive beetle Aethina tumida

The small hive beetle, Aethina tumida, is an emerging pest of social bee colonies. A. tumida shows a specialized life style for which olfaction seems to play a crucial role. To better understand the olfactory system of the beetle, we used immunohistochemistry and 3-D reconstruction to analyze brain structures, especially the paired antennal lobes (AL), which represent the first integration centers for odor information in the insect brain. The basic neuroarchitecture of the A. tumida brain compares well to the typical beetle and insect brain. In comparison to other insects, the AL are relatively large in relationship to other brain areas, suggesting that olfaction is of major importance for the beetle. The AL of both sexes contain about 70 olfactory glomeruli with no obvious size differences of the glomeruli between sexes. Similar to all other insects including beetles, immunostaining with an antiserum against serotonin revealed a large cell that projects from one AL to the contralateral AL to densely innervate all glomeruli. Immunostaining with an antiserum against tachykinin-related peptides (TKRP) revealed hitherto unknown structures in the AL. Small TKRP-immunoreactive spherical substructures are in both sexes evenly distributed within all glomeruli. The source for these immunoreactive islets is very likely a group of about 80 local AL interneurons. We offer two hypotheses on the function of such structures.

Catalogus Coleopterorum hucusque descriptorum synonymicus et systematicus /

Vol. XII contains Index generum universalis.

[Coleoptera: life histories and economic relations]

Made up set; supplied title.

Faune des coléoptères du bassin de la Seine.

Vol. 1, p. 1-288 issued as "Volume hors Série", with the Annales de la Société entomologique de France, Sér. V, tom. 9-10, 1879-81; v. 1, p. 289-360 issued as "Volume hors Série", with the Annales ... Sér. VI, tom. I, 1881; v. 5, p. 1-104, issued as "Volume hors Série", with the Annales... Sér. VI, tom. 9, 1889; v. 5, p. 105-136 issued as "Volume hors Série", with the Annales... tom 60, 1891; v. 5, p.137-160, issued as "Volume hors "Série", with Annales tom 61, 1892. Vol. 6, p. 1-444, issued as "Volume hors Série", with the Annales, de la Société entomologique de France, Sér. VI, tom 2-7, 1882-88. Cf. Brit. Mus. (Nat. Hist.)

Elatérides nouveaux /

No. 6 reprinted from Mémoires del la Société royale des sciences des Liège, 2. ser., t.19, no. 2.

The Lepturini of America north of Mexico, pt. I,

At head of title: Canada. Department of Mines.

Coléoptères Curculionides.

At head of title: Extrait du voyage de M. Le Baron Maurice de Rotchschild en Éthiopie et en Afrique Orientale Anglaise (1904-1905)

Checklist of the coleopterous insects of Mexico, Central America, the West Indies, and South America.

Mode of access: Internet.

Catalogus coleopterorum Europae /

Índice.

Fauna Austriaca.

Índice.

Die Otiorhynchiden s. str. nach den morphologischen Verwandtschaftsverhältnissen ihres Hautscelet's vergleichend dargestellt /

Índice.

Revision der europäischen Otiorhynchus-Arten /

Con dos apéndices [26 p.]

Monographie des chrysomèles de l'Europe /

Mode of access: Internet.