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Description of a novel mating plug mechanism in spiders and the description of the new species Maeotasetastrobilaris (Araneae, Salticidae).

Garcilazo-Cruz U, Alvarez-Padilla F - Zookeys (2015)

Bottom Line: In spiders several types of mating plugs have been documented, the most common ones include solidified secretions, parts of the bulb or in some extraordinary cases the mutilation of the entire palpal bulb.Here, we describe the first case of modified setae, which are located on the cymbial dorsal base, used directly as a mating plug for the Order Araneae in the species Maeotasetastrobilaris sp. n.In addition the taxonomic description of Maeotasetastrobilaris sp. n. is provided and based on our findings the geographic distribution of this genus is extended to the Northern hemisphere.

View Article: PubMed Central - HTML - PubMed

Affiliation: Laboratorio de Aracnología. Facultad de Ciencias, Universidad Nacional Autonoma de Mexico s/n Ciudad Universitaria, México D. F. Del. Coyoacán, Código postal 04510, México.

ABSTRACT
Reproduction in arthropods is an interesting area of research where intrasexual and intersexual mechanisms have evolved structures with several functions. The mating plugs usually produced by males are good examples of these structures where the main function is to obstruct the female genitalia against new sperm depositions. In spiders several types of mating plugs have been documented, the most common ones include solidified secretions, parts of the bulb or in some extraordinary cases the mutilation of the entire palpal bulb. Here, we describe the first case of modified setae, which are located on the cymbial dorsal base, used directly as a mating plug for the Order Araneae in the species Maeotasetastrobilaris sp. n. In addition the taxonomic description of Maeotasetastrobilaris sp. n. is provided and based on our findings the geographic distribution of this genus is extended to the Northern hemisphere.

No MeSH data available.


Maeotasetastrobilaris male anatomy. 8 habitus dorsal view 9 same lateral view 10 prosoma anterior view 11 habitus ventral view 12 pedipalp prolateral view 13 same retrolateral view 14 same ventral view 15 pedipalp expanded retrolateral view. Scale bars: 0.5 mm (8–11); 0.2 mm (12–15). (bH, dH), basal and distal hematodochae, the larger arrow points to the conductor-like structure.
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Figure 2: Maeotasetastrobilaris male anatomy. 8 habitus dorsal view 9 same lateral view 10 prosoma anterior view 11 habitus ventral view 12 pedipalp prolateral view 13 same retrolateral view 14 same ventral view 15 pedipalp expanded retrolateral view. Scale bars: 0.5 mm (8–11); 0.2 mm (12–15). (bH, dH), basal and distal hematodochae, the larger arrow points to the conductor-like structure.

Mentions: Figures 1–7, 8–15, 16–23


Description of a novel mating plug mechanism in spiders and the description of the new species Maeotasetastrobilaris (Araneae, Salticidae).

Garcilazo-Cruz U, Alvarez-Padilla F - Zookeys (2015)

Maeotasetastrobilaris male anatomy. 8 habitus dorsal view 9 same lateral view 10 prosoma anterior view 11 habitus ventral view 12 pedipalp prolateral view 13 same retrolateral view 14 same ventral view 15 pedipalp expanded retrolateral view. Scale bars: 0.5 mm (8–11); 0.2 mm (12–15). (bH, dH), basal and distal hematodochae, the larger arrow points to the conductor-like structure.
© Copyright Policy - creative-commons-attribution
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC4493341&req=5

Figure 2: Maeotasetastrobilaris male anatomy. 8 habitus dorsal view 9 same lateral view 10 prosoma anterior view 11 habitus ventral view 12 pedipalp prolateral view 13 same retrolateral view 14 same ventral view 15 pedipalp expanded retrolateral view. Scale bars: 0.5 mm (8–11); 0.2 mm (12–15). (bH, dH), basal and distal hematodochae, the larger arrow points to the conductor-like structure.
Mentions: Figures 1–7, 8–15, 16–23

Bottom Line: In spiders several types of mating plugs have been documented, the most common ones include solidified secretions, parts of the bulb or in some extraordinary cases the mutilation of the entire palpal bulb.Here, we describe the first case of modified setae, which are located on the cymbial dorsal base, used directly as a mating plug for the Order Araneae in the species Maeotasetastrobilaris sp. n.In addition the taxonomic description of Maeotasetastrobilaris sp. n. is provided and based on our findings the geographic distribution of this genus is extended to the Northern hemisphere.

View Article: PubMed Central - HTML - PubMed

Affiliation: Laboratorio de Aracnología. Facultad de Ciencias, Universidad Nacional Autonoma de Mexico s/n Ciudad Universitaria, México D. F. Del. Coyoacán, Código postal 04510, México.

ABSTRACT
Reproduction in arthropods is an interesting area of research where intrasexual and intersexual mechanisms have evolved structures with several functions. The mating plugs usually produced by males are good examples of these structures where the main function is to obstruct the female genitalia against new sperm depositions. In spiders several types of mating plugs have been documented, the most common ones include solidified secretions, parts of the bulb or in some extraordinary cases the mutilation of the entire palpal bulb. Here, we describe the first case of modified setae, which are located on the cymbial dorsal base, used directly as a mating plug for the Order Araneae in the species Maeotasetastrobilaris sp. n. In addition the taxonomic description of Maeotasetastrobilaris sp. n. is provided and based on our findings the geographic distribution of this genus is extended to the Northern hemisphere.

No MeSH data available.