Myrmagua Prószyński, 2016,

Prószyński, Jerzy, 2016, Delimitation and description of 19 new genera, a subgenus and a species of Salticidae (Araneae) of the world, Ecologica Montenegrina 7, pp. 4-32 : 8

Gen. Myrmagua Prószyński, 2016 gen. n.

Figure 2F

Type species. Myrmarachne guaranitica Galiano, 1969 .

Etymology. Name combines words Myrmarachne and guaranitica , grammar gender assumed female.

Diagnosis. "Pipes-like" sclerotized spermathecae very thin and long, stretching parallel along the median axis of epigyne and extending right to the posterior rim of epigyne, anteriorly terminated by small, transverse oval chambers with thin internal spines ( Fig. 2F ). The coils of copulatory ducts developed in the posterior third of epigyne, it is not clear from the published drawings whether are they membranous, or have somewhat thicker walls. Pocket narrow and long. The structure of epigyne is not comparable to any known S and C American genus of MYRMARACHNINES, resemble Asiatic genus Bocus Peckham & Peckham, 1892 , but there are no other premises for that comparison. Carapace low and broad, slightly constricted dorsally behind eyefield.

Distribution. Argentina.

More diagnostic documentation - see at: http://www.peckhamia.com/salticidae/q24- Myrmagua .html and, especially, Galiano (1969: 143, Figs. 5-6 , 69-70).

Remarks. Only single, damaged female specimen is known, described and drawn by Galiano (1969), other characters are unknown. Classification as separate genus is tentative, due to the striking difference of internal structures of epigyne from all other genera, pending confirmation by new male and females specimens, none were found during last 48 years.

Composition. Single species Myrmagua guaranitica ( Galiano, 1969) comb. n. (syn. Myrmarachne guaranitica Galiano, 1969 ).

Figures

Figure 2. Diversity of internal structures of epigyne in MYRMARACHNINES: A – Myrmarachne tristis, B – C – M. ramosa compared with its alleged synonym M. melanocephala, D – Myrmanu nubilis, E – Myrmapeni chickeringi, F – Myrmagua guaranitica, G – Myrmaplata plataleoides, H – Myrmavola galianoae, I – Myrmapana panamensis, J – Myrmele peckhami. Sources: A, G, H – J. Prószyński, ©Annales zoologici, 2003, 51, 3: 109, Fig. 452; 1992, 44, 9: 85- 186, Figs 87; 2001, 51 (4): 520-521, Figs 10; B – J. Prószyński,©Bulletin of the British Arachnological Society, 2003, 12: 301, Fig. 29; C –Edwards & Benjamin, Zootaxa 2009, 2309: 10, Fig. 5C; D, J – F.R. Wanless, Bulletin of the British Museum (Natural History) (Zoology series) 33: 111, Fig. 72B; 119, Fig. 80D; 143, Fig. 70; Reproduced with the permission of the Trustees of the Natural History Museum, London; E, F – M. E. Galiano, Revista del Museo Argentino de Ciencias naturales Bernardino Rivadavia, Entomologia, Buenos Aires, 3: 143, Figs. 65; 136, Fig. 66

Figure 5. Diagnostic characters of Myrmavola and Pellenes. A – Myrmavola galianoae – lateral view, B – D – M. yamasakii, carapace laterally, dorsal views of male and female; E – G – Pellenes (Pellap) lapponicus - palps and epigyne and its internal structure, SEM photo of dissected bulbus, dorsal and lateral views (E – embolus, CTE – conductor). Sources: A – J. Prószyński, ©Annales zoologici, 2001, 51 (4): 520-521, Fig. 6; B, – D – M. yamasakii - T. Yamasaki & A. Ahmad, 2013, Zootaxa 3710: 534, Figs. 26A, C; E, F – J. Prószyński, unpublished; G – Logunov, Marusik 1999 [2000]. Arthropoda Selecta 8 (4): 269, scan. phot. 22-23. By courtesy

Figure 6. Color photos of diagnostic characters and habitus of new genera: A – C – Psenuc sp. [from Australia]: row of subocular stridulatory bristles on tubercles, flattened body and palp; D – Logunyllus univittatus; E – F - Logunyllus vittatus, male and female; G – H – Orienticius vulpes, female and male; I – J – Nandicius: sp from Nanad Devi National Park – key photos by Miss Shazia Quasin, matching habitus appearance with the internal structure of epigyne (compare also Fig. 9E). Photos by: A – C – ©R. Whyte; D – E – ©J. Lissner; G – H – ©Kyoto Ogata; I – J – ©Shazia Quasin. By courtesy.