Delimitation and description of 19 new genera, a subgenus and a species of Salticidae (Araneae) of the world Author Prószyński, Jerzy text Ecologica Montenegrina 2016 2016-05-26 7 4 32 https://doi.org/10.37828/em.2016.7.1 journal article 10.37828/em.2016.7.1 2336-9744 13224403 urn:lsid:zoobank.org:pub:4171B7E1-BE6F-48ED-85B4-4DC2C232A273 Gen. Myrmatheca Prószyński, 2016 gen. n. Figures 1H , 3J , 4F Type species . Myrmarachne alticephalon Yamasaki & Ahmad, 2013 . Documentation studied . Comparative diagnostic drawings of 2 species in Prószyński (2016a) and original literature. Etymology . Name combines words Myrmarachne and spermatheca , assumed grammar gender - feminine. Diagnosis . Female. "Pipes-like" sclerotized spermathecae are modified in a pair of huge distal chambers in anterior part of epigyne, resembling two tightly pressed sclerotized hemispheres, followed by minute, thin and short, thread-like proximal parts of pipes , with slightly more distinct, transverse parts, expectedly harboring the armatures of junction with copulatory duct, and of a scent gland ( Fig. 1H ). These should be examined under higher microscope power. Membranous copulatory ducts seem to coil around distal parts of " pipes ", but are not sufficiently visible on enclosed photo. Pocket very small and thin, moved ahead towards the center of epigyne, reaching the level of spherical chambers of spermathecae. Anteromedian rim of "windows", on both sides of posterior pocket, is light sclerotized. Males have long, anteriorly swollen chelicerae. Bulbus oval, spermophor broad, with indistinct, thin duct anteriorly. Tibial apophysis short, inclined and waving, apically narrowing ( Fig. 4F ). Body elongate, with very high, block like cephalic part. Male chelicerae very long, dilated in apical half. Remarks . Grace to excellent photograph of stained microscopic slide by T. Yamasaki, we have learned structure of the astonishing spermatecae of his Myrmatheca alticephalon , whose details can be interpreted only by comparison with other genera of MYRMARACHNINES. More diagnostic documentation - see at: http://www.peckhamia.com/salticidae/q24-Myrmat.htm l and, especially, Yamasaki & Ahmad (2013: 507 , fig. 4A-G, 5A-E). Distribution . Two species in Borneo: Sabah, of which one is pending description. A specimen reported from Indonesia : Sumatra : Padang pending confirmation of conspecificity, the third species is described from Madagascar . 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 3. The diversity of palps in MYRMARACHNINES: A – Myrmarachne tristis , B – M. ramosa , C – Myrmapana panamensis , D – Myrmage gedongensis , E – Myrmapeni penicillata , F – Toxeus maxillosus , G – Myrmavola galianoae , H – Myrmaplata plataleoides , I - Myrmele peckhami , J – Myrmatheca alticephalon , K – Myrmavola yamasakii – palp, tibia dorsally and male chelicera. Sources: A, G – Prószyński, © Annales zoologici , 2003, 51, 3: 109, Figs 449-450; 520-521, Figs. 7 – 8; B, D, H – J. Prószyński, ©Bulletin of the British Arachnological Society, 2003, 12 (7): 301, 22-23; 308, Figs 49-51 3; 299, Figs 4-5; 117, Figs 49-50; C, E – M. E. Galiano, ©Revista del Museo Argentino de Ciencias naturales Bernardino Rivadavia, Entomologia, Buenos Aires 3: 143, Figs 69-70; 117, Figs. 49- 50; 136, Figs 46-47; I - F.R. Wanless, ©Bulletin of the British Museum (Natural History) (Zoology series) 33(1): 119, Fig. 80A. Reproduced with the permission of the Trustees of the Natural History Museum, London.. Composition . The following species are transferred from genus Myrmarachne MacLeay, 1839 : Myrmatheca alticephalon ( Yamasaki, Ahmad, 2013 ) comb. n. , Myrmatheca ransoni ( Wanless, 1978 ) comb. n. , undescribed species was photographed by P. Koomen.