Abba, Castanheira & Framenau, 2023
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publication ID |
https://dx.doi.org/10.3897/evolsyst.7.98015 |
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publication LSID |
lsid:zoobank.org:pub:E51A70F7-3E38-46EA-9AA3-9376EA6C9D0C |
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persistent identifier |
https://treatment.plazi.org/id/0A77A238-1C08-4DA7-8A88-64E0F16EF8EE |
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taxon LSID |
lsid:zoobank.org:act:0A77A238-1C08-4DA7-8A88-64E0F16EF8EE |
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treatment provided by |
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scientific name |
Abba |
| status |
gen. nov. |
Abba gen. nov.
Type species.
Araneus transversus Rainbow, 1912. Designated here.
Etymology.
The genus-group name honours the Swedish pop group ABBA whose songs and subsequent musicals Mamma Mia! (2008) and Mamma Mia - Here We Go again! (2018), provided hours of entertainment for the authors. The gender of the genus-group name is feminine.
Diagnosis.
Abba gen. nov. can be diagnosed by the set of strong prolateral macrosetae on the first tibia of the males and by the distinct colouration of the abdomen in both the males and females, consisting of a pair of dark spots centrally on a uniformly creamy-white to grey dorsal surface (Figs 1A View Figure 1 , 3 View Figure 3 , 4A View Figure 4 ).
Description.
Small orb-weaving spiders, males (total length ca. 3.0-3.5) smaller than females (total length ca. 4.0-4.5). Carapace longer than wide, pear-shaped and with cephalic region comparatively narrower in males than in females; colouration yellowish-brown (green in live specimens), generally without setae (Figs 1A View Figure 1 , 4A View Figure 4 ). Fovea transverse in males and females. Anterior median eyes largest, row of posterior eyes slightly recurved, lateral eyes almost touching; lateral eyes on joint tubercles but the row of the posterior lateral eyes slightly wider than that of the anterior lateral eyes; anterior median eyes slightly protruding from the carapace (Figs 1A View Figure 1 , 4A View Figure 4 ). Maxillae subquadrate, yellow with anterior dark border (Figs 1B View Figure 1 , 4B View Figure 4 ). Sternum longer than wide, yellow, with a sparse cover of setae (Figs 1B View Figure 1 , 4B View Figure 4 ). Labium wider than long, with anterior glabrous light edge (Figs 1B View Figure 1 , 4B View Figure 4 ). Chelicerae fangs with three promarginal teeth of similar size, and three retromarginal teeth of similar size. Legs: Leg formula I> IV> II> III; males with set of ca. five strong prolateral macrosetae on the first tibia (Figs 1A View Figure 1 , 3 View Figure 3 ). Abdomen slightly longer than wide, somewhat dorso-ventrally compressed, oval, without humeral humps, specialized setae, sigilla, condyles or other specific structures; colour dorsally varying from beige to grey, bearing two centrally located dark spots (Figs 1A View Figure 1 , 4A View Figure 4 ). Venter grey, sparse layer of guanine crystals (Figs 1B View Figure 1 , 4B View Figure 4 ).
Male pedipalp patella with two macrosetae (Fig. 1C, D View Figure 1 ); paracymbium elongated and hook-like (Figs 1D View Figure 1 , 2B View Figure 2 ); median apophysis subquadrate spatulate, with strong sclerotized finger-like tip and sclerotized base (Figs 1C View Figure 1 , 2A, B View Figure 2 ); radix poorly developed (Figs 1C View Figure 1 , 2A View Figure 2 ); terminal apophysis wider than long, rounded with sclerotized tip (Figs 1C, D View Figure 1 , 2A, B View Figure 2 ); conductor elongate, membranous, apically slightly curved (Figs 1C, D View Figure 1 , 2A, B View Figure 2 ); embolus heavily sclerotized and thick, curved basally, uncapped (Figs 1C, D View Figure 1 , 2A, B View Figure 2 ).
Epigyne base rounded, lateral portion rounded and heavily sclerotized; atrium wide and heavily sclerotized with copulatory openings located posteriorly (Fig. 4C, D View Figure 4 ); scape approximately as long as atrium length, not exceeding posterior epigyne base, with terminal pocket (Fig. 4C View Figure 4 ); spermathecae ovoid to spherical, larger than atrium (Fig. 4C-E View Figure 4 ).
No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.