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Rediscovered parasitism of Andrena savignyi Spinola (Hymenoptera, Andrenidae) by Stylops (Strepsiptera, Stylopidae) and revised taxonomic status of the parasite.

Straka J, Alqarni AS, Jůzová K, Hannan MA, Hinojosa-Díaz IA, Engel MS - Zookeys (2015)

Bottom Line: The recent rediscovery of this Stylops from an individual of Andrena savignyi permits a reinterpretation of the species and its affinities among other Stylops.The bee was collected at flowers of Zilla spinosa (Turra) Prantl. (Brassicaceae) in Amariah, Riyadh, Kingdom of Saudi Arabia.A differential diagnosis is provided for Stylops nassonowi and the morphology of the female is described, as well as the first instars.

View Article: PubMed Central - HTML - PubMed

Affiliation: Department of Zoology, Charles University in Prague, Viničná 7, CZ-128 44 Praha 2, Czech Republic.

ABSTRACT
Parasitism of Andrena (Suandrena) savignyi Spinola (Hymenoptera: Andrenidae) by Stylops Kirby (Strepsiptera: Stylopidae) has been recorded only once, and from an individual collected in Egypt almost a century ago, with the parasite described as Stylops savignyi Hofeneder. The recent rediscovery of this Stylops from an individual of Andrena savignyi permits a reinterpretation of the species and its affinities among other Stylops. The bee was collected at flowers of Zilla spinosa (Turra) Prantl. (Brassicaceae) in Amariah, Riyadh, Kingdom of Saudi Arabia. Based on DNA barcode sequences from material sampled across Africa, Asia, and Europe, it is apparent that Stylops savignyi is conspecific with Stylops nassonowi Pierce, and we accordingly synonymize this name (syn. n.), with the latter representing the senior and valid name for the species. A differential diagnosis is provided for Stylops nassonowi and the morphology of the female is described, as well as the first instars.

No MeSH data available.


Related in: MedlinePlus

Female of Andrena (Suandrena) savignyi Spinola from Riyadh, Saudi Arabia parasitized by Stylopsnassonowi Pierce 1 Dorsal habitus of bee 2 Lateral habitus of bee (image inverted); one female of parasite observable at apex of tergum IV 3 Detail of setae at bee’s metasomal apex showing numerous first instars of the parasite.
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Figure 1: Female of Andrena (Suandrena) savignyi Spinola from Riyadh, Saudi Arabia parasitized by Stylopsnassonowi Pierce 1 Dorsal habitus of bee 2 Lateral habitus of bee (image inverted); one female of parasite observable at apex of tergum IV 3 Detail of setae at bee’s metasomal apex showing numerous first instars of the parasite.

Mentions: Individuals of Andrenasavignyi were collected mostly from flowers of Zillaspinosa (Turra) Prantl. (Brassicaceae) at five localities around Amariah, Riyadh, Saudi Arabia (Al Oyanah, Al Kharj, Rouma, Derab, and Al Amariah, the last of which was where most material was sampled), although the species has also been encountered at various localities throughout Saudi Arabia and the Arabian peninsula (e.g., Dathe 2009; Engel pers. obs.). Details of the collection site are available in Alqarni et al. (2012, 2014a), Engel et al. (2012), and Hannan et al. (2012). At the locality in which the stylopized bee was discovered, general collecting had been underway from September 2010 through September 2012, but all individuals of Andrenasavignyi were found between 22 February and 10 March 2011 and with peak bee activities at flowers around 20–25 °C. Although there is a diversity flowers around Al Amariah, Andrenasavignyi was only encountered at Zillaspinosa and to a lesser degree at Rhaphanussativus L. and Erucasativa Mill. (both also of Brassicaceae), indicative of its oligolectic pollen-collecting preferences. The stylopized female was collected from Zillaspinosa, and she made no attempt to collect pollen from the flowers. The cephalothoraxes of the two female Stylops is extruded between the bee’s metasomal terga IV and V (Figs 1, 2), with one on either side of the midline (Fig. 4). Such an orientation is typical for a stylopized bee, where even when parasitized by a single female Stylops, the cephalothorax always protrudes from a more lateral position and never from the midline. Measurements of the parasite cephalothoraxes are shown in Table 1.


Rediscovered parasitism of Andrena savignyi Spinola (Hymenoptera, Andrenidae) by Stylops (Strepsiptera, Stylopidae) and revised taxonomic status of the parasite.

Straka J, Alqarni AS, Jůzová K, Hannan MA, Hinojosa-Díaz IA, Engel MS - Zookeys (2015)

Female of Andrena (Suandrena) savignyi Spinola from Riyadh, Saudi Arabia parasitized by Stylopsnassonowi Pierce 1 Dorsal habitus of bee 2 Lateral habitus of bee (image inverted); one female of parasite observable at apex of tergum IV 3 Detail of setae at bee’s metasomal apex showing numerous first instars of the parasite.
© Copyright Policy - creative-commons-attribution
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC4591606&req=5

Figure 1: Female of Andrena (Suandrena) savignyi Spinola from Riyadh, Saudi Arabia parasitized by Stylopsnassonowi Pierce 1 Dorsal habitus of bee 2 Lateral habitus of bee (image inverted); one female of parasite observable at apex of tergum IV 3 Detail of setae at bee’s metasomal apex showing numerous first instars of the parasite.
Mentions: Individuals of Andrenasavignyi were collected mostly from flowers of Zillaspinosa (Turra) Prantl. (Brassicaceae) at five localities around Amariah, Riyadh, Saudi Arabia (Al Oyanah, Al Kharj, Rouma, Derab, and Al Amariah, the last of which was where most material was sampled), although the species has also been encountered at various localities throughout Saudi Arabia and the Arabian peninsula (e.g., Dathe 2009; Engel pers. obs.). Details of the collection site are available in Alqarni et al. (2012, 2014a), Engel et al. (2012), and Hannan et al. (2012). At the locality in which the stylopized bee was discovered, general collecting had been underway from September 2010 through September 2012, but all individuals of Andrenasavignyi were found between 22 February and 10 March 2011 and with peak bee activities at flowers around 20–25 °C. Although there is a diversity flowers around Al Amariah, Andrenasavignyi was only encountered at Zillaspinosa and to a lesser degree at Rhaphanussativus L. and Erucasativa Mill. (both also of Brassicaceae), indicative of its oligolectic pollen-collecting preferences. The stylopized female was collected from Zillaspinosa, and she made no attempt to collect pollen from the flowers. The cephalothoraxes of the two female Stylops is extruded between the bee’s metasomal terga IV and V (Figs 1, 2), with one on either side of the midline (Fig. 4). Such an orientation is typical for a stylopized bee, where even when parasitized by a single female Stylops, the cephalothorax always protrudes from a more lateral position and never from the midline. Measurements of the parasite cephalothoraxes are shown in Table 1.

Bottom Line: The recent rediscovery of this Stylops from an individual of Andrena savignyi permits a reinterpretation of the species and its affinities among other Stylops.The bee was collected at flowers of Zilla spinosa (Turra) Prantl. (Brassicaceae) in Amariah, Riyadh, Kingdom of Saudi Arabia.A differential diagnosis is provided for Stylops nassonowi and the morphology of the female is described, as well as the first instars.

View Article: PubMed Central - HTML - PubMed

Affiliation: Department of Zoology, Charles University in Prague, Viničná 7, CZ-128 44 Praha 2, Czech Republic.

ABSTRACT
Parasitism of Andrena (Suandrena) savignyi Spinola (Hymenoptera: Andrenidae) by Stylops Kirby (Strepsiptera: Stylopidae) has been recorded only once, and from an individual collected in Egypt almost a century ago, with the parasite described as Stylops savignyi Hofeneder. The recent rediscovery of this Stylops from an individual of Andrena savignyi permits a reinterpretation of the species and its affinities among other Stylops. The bee was collected at flowers of Zilla spinosa (Turra) Prantl. (Brassicaceae) in Amariah, Riyadh, Kingdom of Saudi Arabia. Based on DNA barcode sequences from material sampled across Africa, Asia, and Europe, it is apparent that Stylops savignyi is conspecific with Stylops nassonowi Pierce, and we accordingly synonymize this name (syn. n.), with the latter representing the senior and valid name for the species. A differential diagnosis is provided for Stylops nassonowi and the morphology of the female is described, as well as the first instars.

No MeSH data available.


Related in: MedlinePlus