A Fine Morphological Study of the Rare <i>Anillidris bruchi</i> Santschi (Hymenoptera: Formicidae: Dolichoderinae) Male and Queen

Using optical and scanning electron microscopy, we describe the following new morphologically distinctive characters of the rare Neotropical ant <i>Anillidris bruchi</i> Santschi, 1936, male and queen: scattered setae inter-ommatidia, semicircular hypostomal notch, antennal cleaning, met...

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Main Authors: Stefano Cantone, Andrea Di Giulio
Format: Article
Language:English
Published: MDPI AG 2023-08-01
Series:Insects
Subjects:
Online Access:https://www.mdpi.com/2075-4450/14/9/723
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author Stefano Cantone
Andrea Di Giulio
author_facet Stefano Cantone
Andrea Di Giulio
author_sort Stefano Cantone
collection DOAJ
description Using optical and scanning electron microscopy, we describe the following new morphologically distinctive characters of the rare Neotropical ant <i>Anillidris bruchi</i> Santschi, 1936, male and queen: scattered setae inter-ommatidia, semicircular hypostomal notch, antennal cleaning, metatibial spurs, and the remnant of the M2 vein in the hindwings. In males, we show for the first time the morphology of maxillary and labial palpi, the absence of metapleural glands, and, in external genitalia, for the first time in ants, a new mechano-sensory area on the volsella that we called “volsella sensorium”, composed of several spine-like sensilla. Additionally, we give an updated morphological diagnosis of the alate caste, which will be useful for future studies to clarify the phylogeny of the genus <i>Anillidris</i>.
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spelling doaj.art-367fe2b277024632b0f686b4e0ed4e352023-11-19T11:15:00ZengMDPI AGInsects2075-44502023-08-0114972310.3390/insects14090723A Fine Morphological Study of the Rare <i>Anillidris bruchi</i> Santschi (Hymenoptera: Formicidae: Dolichoderinae) Male and QueenStefano Cantone0Andrea Di Giulio1Department of Science, University Roma Tre, 00146 Rome, ItalyDepartment of Science, University Roma Tre, 00146 Rome, ItalyUsing optical and scanning electron microscopy, we describe the following new morphologically distinctive characters of the rare Neotropical ant <i>Anillidris bruchi</i> Santschi, 1936, male and queen: scattered setae inter-ommatidia, semicircular hypostomal notch, antennal cleaning, metatibial spurs, and the remnant of the M2 vein in the hindwings. In males, we show for the first time the morphology of maxillary and labial palpi, the absence of metapleural glands, and, in external genitalia, for the first time in ants, a new mechano-sensory area on the volsella that we called “volsella sensorium”, composed of several spine-like sensilla. Additionally, we give an updated morphological diagnosis of the alate caste, which will be useful for future studies to clarify the phylogeny of the genus <i>Anillidris</i>.https://www.mdpi.com/2075-4450/14/9/723winged antsexternal genitaliaant spursSEMant morphologyvolsella sensorium
spellingShingle Stefano Cantone
Andrea Di Giulio
A Fine Morphological Study of the Rare <i>Anillidris bruchi</i> Santschi (Hymenoptera: Formicidae: Dolichoderinae) Male and Queen
Insects
winged ants
external genitalia
ant spurs
SEM
ant morphology
volsella sensorium
title A Fine Morphological Study of the Rare <i>Anillidris bruchi</i> Santschi (Hymenoptera: Formicidae: Dolichoderinae) Male and Queen
title_full A Fine Morphological Study of the Rare <i>Anillidris bruchi</i> Santschi (Hymenoptera: Formicidae: Dolichoderinae) Male and Queen
title_fullStr A Fine Morphological Study of the Rare <i>Anillidris bruchi</i> Santschi (Hymenoptera: Formicidae: Dolichoderinae) Male and Queen
title_full_unstemmed A Fine Morphological Study of the Rare <i>Anillidris bruchi</i> Santschi (Hymenoptera: Formicidae: Dolichoderinae) Male and Queen
title_short A Fine Morphological Study of the Rare <i>Anillidris bruchi</i> Santschi (Hymenoptera: Formicidae: Dolichoderinae) Male and Queen
title_sort fine morphological study of the rare i anillidris bruchi i santschi hymenoptera formicidae dolichoderinae male and queen
topic winged ants
external genitalia
ant spurs
SEM
ant morphology
volsella sensorium
url https://www.mdpi.com/2075-4450/14/9/723
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