Arthropoda Selecta 29(2): 262–272 © ARTHROPODA SELECTA, 2020 Three new species of the Acantholycosa-complex (Aranei: Lycosidae) from the south of the Russian Far East Òðè íîâûõ âèäà èç Acantholycosa-êîìïëåêñà (Aranei: Lycosidae) ñ þãà Äàëüíåãî Âîñòîêà Ðîññèè Alexander A. Fomichev1, Mikhail M. Omelko2,3 À.À. Ôîìè÷åâ1, Ì.Ì. Îìåëüêî2,3 1 Altai State University, Lenina Pr., 61, Barnaul, RF-656049, Russia. E-mail: [email protected] 2 Federal Scientific Center of East Asia Terrestrial Biodiversity, Far Eastern Branch, Russian Academy of Sciences, Vladivostok 690022, Russia. E-mail: [email protected] 3 Far Eastern Federal University, Laboratory of ecology and evolutionary biology of aquatic organisms (LEEBAO), School of Natural Sciences, Vladivostok 690091, Russia. E-mail: [email protected] 1 Алтайский государственный университет, просп. Ленина, 61, Барнаул, 656049, Россия. 2 Федеральный научный центр Биоразнообразия наземной биоты Восточной Азии ДВО РАН, Владивосток 690022, Россия. 3 Дальневосточный федеральный университет, Лаборатория экологии и эволюционной биологии водных организмов (ЛЭБВО), Школа Естественных Наук, Владивосток 690091, Россия. KEY WORDS: Araneae, Asia, endemism, Lycosidae, new species, Sikhote-Alin Mt. Range, taxonomy, wolf spiders. КЛЮЧЕВЫЕ СЛОВА: Araneae, Азия, эндемизм, Lycosidae, новые виды, хребет Сихотэ-Алинь, таксо- номия, пауки-волки. ABSTRACT: Three new species from the south of recognized by having four or more pairs of ventral the Russian Far East belonging to the Acantholycosa- spines on tibiae I. In addition, representatives of this complex are diagnosed, described and illustrated: Acan- complex are characterized by a specific conformation tholycosa irinae sp.n. (#$), A. marusiki sp.n. (#$) of the copulatory organs: i.e., the modified palea, the and Sibirocosa arsenyevi sp.n. (#$). Endemism of the wide embolus, and apical pockets of the epigyne being wolf spiders of the Acantholycosa-complex from the separated from fovea [Omelko et al., 2016]. Congeners Sikhote-Alin Mt. Range is discussed. of the Acantholycosa-complex are relatively well-stud- How to cite this article: Fomichev A.A., Omelko ied [Marusik et al., 2004, 2015; Marusik, Omelko, M.M. 2020. Three new species of the Acantholycosa- 2011, 2017; Fomichev, Marusik, 2018]. All the species complex (Aranei: Lycosidae) from the south of the of this group, with a few exceptions, inhabit alpine Russian Far East // Arthropoda Selecta. Vol.29. No.2. screes only (up to 4000 m a.s.l.) and usually are local P.262–272. doi: 10.15298/arthsel. 29.2.13 endemics [Marusik et al., 2004; Fomichev, Marusik, 2018]. In the southern part of the Russian Far East, this РЕЗЮМЕ: Три новых вида, принадлежащих к generic complex is represented by the genera Acan- Acantholycosa-комплексу, диагностированы, описа- tholycosa, Gulocosa and Sibirocosa [Marusik et al., ны и иллюстрированы с юга Русского Дальнего Востока: Acantholycosa irinae sp.n. (#$), A. marusiki 2015]. The most speciose genus is Acantholycosa, sp.n. (#$) и Sibirocosa arsenyevi sp.n. (#$). Обсуж- consisting of 31 valid species and a subspecies within дён эндемизм у пауков-волков из Acantholycosa- the Holarctic Region [WSC, 2019]. Sibirocosa is a комплекса хребта Сихотэ-Алинь. relatively small genus, currently including seven valid species from Eastern Siberia and the Far East [WSC, Introduction 2019]. Gulocosa is a monotypic genus, endemic to the southern part of the Russian Far East [Marusik et al., According to Marusik et al. [2015], Acantholycosa 2015]. During the 2019 field trip to the Russian Far Dahl, 1908 and the related five genera, viz. Gulocosa East, the authors collected several new species belong- Marusik, Azarkina et Koponen, 2015; Melecosa ing to the Acantholycosa-complex. Marusik, Azarkina et Koponen, 2015; Mongolicosa The aims of the present paper are (1) to provide Marusik, Azarkina et Koponen, 2004; Pyrenecosa detailed descriptions of three new species, and (2) to Marusik, Azarkina et Koponen, 2015 and Sibirocosa discuss geographic distribution of the wolf spiders of Marusik, Azarkina et Koponen, 2004, form the Acan- the Acantholycosa-complex in the south of the Russian tholycosa-complex, of which members can easily be Far East. Three new species of the Acantholycosa-complex 263 Figs 1–6. Bulbus of Acantholycosa irinae sp.n. (1–2), A. marusiki sp.n., (3–4) and Sibirocosa arsenyevi sp.n. (5–6): 1, 3, 5 — palp, ventral view; 2, 4, 6 — bulbus, ventral view. Scale: 0.2 mm. Abbreviations: Em — embolus, Co — conductor, Pa — paleal apophysis, Pl — palea, Ta —tegular apophysis, Te — terminal apophysis. Рис. 1–6. Бульбус Acantholycosa irinae sp.n. (1–2), A. marusiki sp.n., (3–4) и Sibirocosa arsenyevi sp.n. (5–6): 1, 3, 5 — пальпа, вентрально; 2, 4, 6 — бульбус, вентрально. Масштаб: 0.2 мм. Сокращения: Em — эмболюс, Co — кондуктор, Pa — отросток палеи, Pl — палея, Ta — тегулярный отросток, Te — терминальный отросток. Material and methods All the examined material is deposited in the Zoological Museum of the Moscow State University, Moscow, Russia (ZMMU; curator: K.G. Mikhailov) and the Institute of Sys- Specimens were photographed by means of a Nikon DS- tematics and Ecology of Animals SB RAS, Novosibirsk, Ri2 camera attached to a Nikon SMZ25 stereomicroscope at Russia (ISEA; curator: G.N. Azarkina). the Far Eastern Federal University, Vladivostok, Russia. Abbreviations used in the text and figure plates and the Photographs were taken in dishes with soft white paper at format of descriptions follow those by Marusik et al. [2004]: the bottom, filled with alcohol. Digital images were mon- Leg segments: Fe — femur, Pa — patella, Mt — metatarsus, taged by using Zerene Stacker software (http:// Ti — tibia, Ta — tarsus. Spination: d — dorsal, p — zerenesystems.com/cms/stacker). Epigynes were cleared in prolateral, r — retrolateral, v — ventral. Copulatory organs: a KOH/water solution. All measurements are in millimeters. Ap — apical pocket, Bc — basal part of conductor, Cd — 264 A.A. Fomichev, M.M. Omelko Figs 7–12. Bulbus of Acantholycosa irinae sp.n. (7–8), A. marusiki sp.n. (9–10), embolic devision, tegulum and tegular apophysis of Sibirocosa arsenyevi sp.n. (11–12): 7, 9 — retrolateral view; 8, 10 — anterior view; 11 — embolic devision, posterior view; 12 – tegulum and tegular apophysis, terminal view. Scale: 0.2 mm. Abbreviations: Em — embolus, Et — embolic tooth, Co — conductor, Ie — inner part of embolus, Pl — palea, Ta — tegular apophysis, Te — terminal apophysis. Рис. 7–12. Бульбус Acantholycosa irinae sp.n. (7–8), A. marusiki sp.n. (9–10), эмболюсный отдел, тегулум и тегулярный отросток Sibirocosa arsenyevi sp.n. (11–12): 7, 9 — ретролатерально; 8, 10 — спереди; 11 — эмболюсный отдел, сзади; 12 — тегулюм и тегулярный отросток, вид сверху. Масштаб: 0,2 мм. Сокращения: Em — эмболюс, Et — зуб эмболюса, Co — кондуктор, Ie — внутренняя часть эмболюса, Pl — палея, Ta — тегулярный отросток, Te — терминальный отросток. copulatory duct, Co — conductor, Em — embolus, Et — ETYMOLOGY. The specific name is dedicated to Ms embolic tooth, Ie — inner part of embolus, Fo — fovea, Le — Irina B. Fomicheva (Novosibirsk, Russia), the first author’s lips of epigyne, Lm — lateral margins of fovea, Pa — paleal mother. apophysis, Pl — palea, Re — receptacle, Sb — septal base, DIAGNOSIS. A. irinae sp.n. is most similar to A. abori- Sd — sperm duct, Ss — septal stem, Ta — tegular apophys- genica Zyuzin et Marusik, 1988 in having the embolic tip is, Te — terminal apophysis. being bent up and the tegular apophysis lacking an apical arm, and in the epyginal conformation. The males of the new Descriptions species can be distinguished from those of A. aborigenica by the shape of tegular apophysis, with a longer basal arm (cf. Acantholycosa irinae sp.n. Figs 1–2 and 31, 36, 37), the longer paleal apophysis (cf. Figs 2 and 31), the larger terminal apophysis (cf. Figs 13–15 and Figs 1–2, 7–8, 13–15, 22–24, 48–49, 59, Map. 32–34) and by the presence of an embolic tooth near the embolic base. The females can easily be distinguished from TYPES. HOLOTYPE # (ZMMU) from Russia, Maritime Terri- tory, Sikhote-Alin Mt. Range, Alekseevskiy Mountain Range, those of A. aborigenica by having a wider space between the Ol’khovaya Mt. (43°20.432′N, 133°39.441′E), scree, 1460–1600 septal base and lateral margins of fovea, and the septal stem m a.s.l., 3.07.2019, M.M. Omelko, A.A. Fomichev. PARATYPES: 1 $ not reaching the apical pocket (vs. reaching the apical pock- (ZMMU) and 1 $ (ISEA 001.8416), together with the holotype. et in A. aborigenica) (cf. Figs 22–24 and 38–40). Three new species of the Acantholycosa-complex 265 Figs 13–21. Embolic division of Acantholycosa irinae sp.n. (13–15), A. marusiki sp.n. (16–18) and Sibirocosa arsenyevi sp.n. (19– 21): 13, 16, 19 — ventral view; 14, 17, 20 — anterior view; 15, 18, 21 — retrolateral view. Scale: 0.2 mm. Abbreviations: Bc — basal part of conductor, Co — conductor, Em — embolus, Et — embolic tooth, Ie — inner part of embolus, Sd — sperm duct, Te — terminal apophysis. Рис. 13–21. Эмболюсный отдел Acantholycosa irinae sp.n. (13–15), A. marusiki sp.n. (16–18) и Sibirocosa arsenyevi sp.n. (19– 21): 13, 16, 19 — вентрально; 14, 17, 20 — спереди; 15, 18, 21 — ретролатерально. Масштаб: 0,2 мм. Сокращения: Bc — базальная часть кондуктора, Co — кондуктор, Em — эмболюс, Et — зуб эмболюса, Ie — внутренняя часть эмболюса, Sd — проток спермы, Te — терминальный отросток. DISTRIBUTION. Known from the type locality only one claw. Tegular apophysis (Ta) small, without an apical (Map). arm. Terminal apophysis (Te) narrow, long, claw-shaped. DESCRIPTION. Male (holotype). Carapace 4.14 long, Palea with a large triangular apophysis (Pa). Embolus wide, 3.26 wide. Total length 7.72. Carapace dark brown with with a large tooth at its base (Et). light brown median band widened around fovea and be- Female (paratypes). Carapace 4.10–4.34 long, 3.25–3.27 hind eye area. Lateral stripes almost invisible. Eye field wide. Total length 8.20–8.66.