Evacin, Prószyński, 2018
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publication ID |
https://doi.org/ 10.37828/em.2018.16.12 |
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publication LSID |
urn:lsid:zoobank.org:pub:6C3A5085-F624-4D0A-9F10-4EBB9AF19F01 |
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persistent identifier |
https://treatment.plazi.org/id/2DD46EC2-64A8-4B95-8F4D-4B256F10F789 |
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taxon LSID |
lsid:zoobank.org:act:2DD46EC2-64A8-4B95-8F4D-4B256F10F789 |
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treatment provided by |
Felipe |
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scientific name |
Evacin |
| status |
gen. nov. |
Gen. Evacin gen. n. (19 species)
Figures 1 View Figure 1 M-Q, 6A-L, 7, 8
Type species. Evacin kochi ( Figs 1 View Figure 1 M-Q,)
Type material: " Evarcha kochi - Java, Palembang , Tenger, Tr." MNHN 20349 .
Etymology. Name is created as arbitrary combination of letters coined of words Eva -[rcha] and [flavo]- cin [cta] indicating relation to Evarcha . Assumed grammar gender feminine.
Documentation studied. Summary of world's literature provided by"Monograph of Salticidae ( Araneae ) of the World 1995-2016" Prószyński (2016a, b) and current literature.
Diagnosis. Key characters are shown on Fig. 1 View Figure 1 M-Q, comparative background of remaining four genera shown on Figs 1 View Figure 1 A-L and R-V.
Description. Male: bulbus almost circular (rarely oval) and flat or gently convex, embolus thin and long, encircling bulbus entirely or partially ( Fig. 8F View Figure 8 ), tibial apophysis thin, about half of length of bulbus, sharp pointed, in some species slightly waving ( Figs 6A, C View Figure 6 ). Female: sclerotized posterior part of epigyne reduced to narrow transverse band ( Figs 6 View Figure 6 A-H) with a sclerotized septum entering membranous "window" for about half of length of the latter and ending with circular rims of otherwise invisible copulatory openings. Spermathecae in a form of several coils stretching along the whole "window" and ending far ahead of its anterior rim, coils may be long and thin, or broad and strongly sclerotized ( Figs 6C, D View Figure 6 1, E1 View Figure 1 ).
Remarks. Nomenclature of Evacin species is particularly entangled. Males of these species have very similar palps, differing by minute details of tibial apophysis shape ( Figs 6 View Figure 6 , 7 View Figure 7 ) of uncertain diagnostic value. Epigyne are also similar, differing in length of narrow posterior sclerotized band and in width of sclerotized septum separating copulatory openings in the posterior half of epigyne, these were interpreted as intraspecific variation, until discovery of tremendous differences in spermathecae ( Figs 6C, F View Figure 6 , less striking in 6D-E), the experience nullifying earlier interpretations. The problem is that these species are known from single, or a few species only, epigyne of 6 more forms were not cleared and documented. Habitus of these species is not documented by color pictures, with exception of three species, whose identification by genitalic structures is not confirmed. Geographic origin of identified species was not taken into account during identification, specimens studied by various authors came from widely distributed areas, including northern and southern China, Japan, Vietnam, Bintang Island, Singapore, Borneo, Java, Lombok, Palau, Sri Lanka, Myanmar, Seychelles and Africa.
Composition (diagnostic documentation indicated in brackets). Type species Evacin kochi ( Simon, 1902) [Java, Lombok ( Figs 1 View Figure 1 MQ, 6A-C)], Evacin acuta (Wesolowska, 2006) [ Seychelles ( Fig. 7M View Figure 7 )], Evacin alba (Peckham, Peckham 1903) comb. n. [S Africa ( Fig. 7 View Figure 7 S-S1)], Evacin besar sp. n. [Borneo, ( Fig. 8 View Figure 8 A-H)], Evacin bulbosa Zabka, 1985 [ Vietnam ( Fig. 6K View Figure 6 )], Evacin cancellata ( Simon, 1902) [ Sri Lanka ( Fig.3J View Figure 3 , 6G View Figure 6 )], E. fischeri (Bösenberg & Strand, 1906) (= Hyllus fischeri Bösenberg & Strand, 1906 ) [ Japan ( Fig. 6J View Figure 6 )], Evacin flavocincta (C. L. Koch, 1846) (Bintang Is. ( Fig. 3 View Figure 3 E-G1)], Evarcha karas (Wesolowska, 2011) [ Namibia ( Fig. 7Q View Figure 7 )], Evacin heteropogon Simon, 1903 ( Figs 6 View Figure 6 D-D1) [North Vietnam - " Tonkin "], E. infrastriata (Keyserling, 1881) [Queensland ( Fig. 3H View Figure 3 7V View Figure 7 )], Evacin kirghisica ( Rakov, 1997) [ Kyrgyzstan ( Fig. 7N View Figure 7 )], Evacin nigrifrons (Koch C.L., 1846) [Sumatra ( Fig. 6I View Figure 6 )], Evacin optabilis (Fox, 1937) [ China: Sichuan, Suifu = Yibin ( Fig. 6H View Figure 6 )], Evacin pococki ( Zabka 1985) [ Vietnam ( Fig. 7O View Figure 7 )], Evacin pulchella (Thorell, 1895) [ Burma: Tharrawady ( Fig. 6L View Figure 6 )], Evacin pseudopococki (Peng X., Xie L., Kim, 1993) [ China ( Fig. 7P View Figure 7 )], Evacin reiskindi (Berry, Beatty, Proszynski, 1996) [Caroline Isls: Palau Is. ( Fig. 6F View Figure 6 )], Evacin simonis (Thorell, 1892) [ Singapore ( Figs 6 View Figure 6 D- D1)], Evacin striolata (Wesołowska, Haddad 2009) [S Africa: Maputaland ( Fig. 3K View Figure 3 , 7U View Figure 7 )], Evacin vitosa (Próchniewicz, 1989) Africa: Kenya ( Fig. 7T View Figure 7 )]. [ATTENTION: all names are new combinations].
SOURCES: A - Zabka Annales zoologici, 1985: 224, f. 193-196, B - Prószyński 1984 c: 49, C - Prószyński, Deeleman- Reinhold, 2010 Arthropoda selecta, 19(3): 166, f 62-69, D-D1, E, G, J, L - Proszynski 1984: Atlas 49, 50, 51, F - Berry, Beatty, Proszynski 1996 Journal Arachnology 24(3): figs 70-73, H - Proszynski 1987: Atlas 26, I - Zabka in Prószyński 2009 Arhropoda selecta 18 (3-4): f. 35, K - Zabka 1985. Annales zoologici, 39, 11: 222, f. 173-175. All ©copyrights are retained by the original authors and copyright holders, used here by their courtesy.
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.