Larinioides jalimovi (Bakhvalov, 1981) Bakhvalov, 1981

Šestáková, Anna, Marusik, Yuri M. & Omelko, Mikhail M., 2014, A revision of the Holarctic genus Larinioides Caporiacco, 1934 (Araneae: Araneidae), Zootaxa 3894 (1), pp. 61-82 : 69-71

Larinioides jalimovi (Bakhvalov, 1981) comb. n.

Figs 1 , 8 A, 9A, 10A, 11, 12, 26, 33

Araneus jalimovi Bakhvalov 1981b: 146 , fig. 4 (D♀).

Material examined: RUSSIA: Amur Province: 1♀ (7 August 1983): Khinganski reserve, Boguchanka Sopka, on trees, Y.M. Marusik ( ZMMU). Khabarovsk Province: 1♀ (19 June 1931): environs of Khabarovsk, under stones, V. I. Sychevskaya ( ZMMU); 3♀♀ (31 July 1931): Khor Station, Khor River, V. I. Sytchevskaya ( ZMMU). Maritime Province: 1♀ (August 1983): Khasan District, Pos’yet, dry meadow, T.I. Oliger ( ZMMU); 1♀ (30 August—5 September 1956): Khasan District, Khasan Village, Y.I. Starobogatov & I.Y. Lokshyna ( ZISP); 5♂♂ 8♀♀ (16–17 July 1998): Khanka Lake, S shore, Luzanova Sopka, 44º33’N 132º23’E, Y.M. Marusik ( IBPN); 2♂♂ 1♀ (15–16 July 1998): Khanka Lake, S shore, 44º39’N 132º34’E, Y.M. Marusik ( IBPN); 1♀ (17 July 1998): Khanka Lake, SW shore, Sosnovy Island and peninsula nearby, 44º52’N 132º07’E, Y.M. Marusik ( IBPN).

Diagnosis. Habitus is similar to that of L. ixobolus and L. sericatus , but females of L. jalimovi differ by having a typical heart-shaped epigyne ( Fig. 26 ). Unlike L. ixobolus and L. sericatus , the male palp of L. jalimovi has a tapered terminal apophysis and unique small spur on the internal side of the flat shield of embolus and a long process at the base of subterminal apophysis 1 ( Figs 11, 12 ). Male palp can also be confused with those of L. cornutus and L. folium , but it differs by presence of processes at the subterminal apophysis 1.

Description. Carapace brown with dark pattern. Chelicerae and sternum brown.

Dorsum of abdomen with dark brown folium and indistinct white cross ( Figs 1 A, C). Legs yellow, dark annulated with spotted femur.

Male. Total length 6.5–8.5. Carapace 3.2–4.1 long, 2.8–3.8 wide. Length of the first patella + tibia 5.8–7.8. Tibia II not modified, only slightly shorter and thicker than tibia 1 ( Fig. 8 A). Palp as in Figs 9 A, 10A, 11, 12; bulbus with a long tapered terminal apophysis; subterminal apophysis 1 with a long, lunate process in basal part; subterminal apophysis 2 rounded; embolic tip covered by a flat shield bearing small transparent spur on the internal side; median apophysis with a thinner and longer top part in comparison to shorter, flat and square lower one; conductor trapezoid, as high as wide.

Female. Total length 7.8–11.2. Carapace 3.0–4.6 long, 3.0–3.8 wide. Length of the first patella + tibia 4.7–6.9. Epigyne as in Fig. 26 ; well sclerotised; heart shaped; folded by lateral lamellae; basal lamellae strongly reduced; scapus shortly S-shaped at the base. Copulatory openings near base of scapus, covered by folded margin of lateral lamellae.

Distribution. From the midway along the Amur River to Khabarovsk and south to South Korea and possibly to Zhejiang in China ( Fig. 33 ).

Comments. Holotype female from the Khabarovsk Province, Khabarovsk Pedagogical Institute Biological Station (June to July 1970, Yalymova) from Bakhvalov’s private collection seems to be lost.

Figures

FIGURE 8. Prolateral view of the second pair of male legs of Larinioides species. A— L. jalimovi; B— L ixobolus; C— L. sericatus; D— L. patagiatus; E— L. chabarovi, F— L. cornutus; G— L. folium.

FIGURE 9. Conductor of male palp of Larinioides species. A— L. jalimovi; B— L. ixobolus; C— L. sericatus; D— L. patagiatus; E— L. chabarovi; F— L. cornutus; G— L. folium.

FIGURE 33. Distribution map of Larinioides chabarovi (circle) and L. jalimovi (square). Record from South Korea is based on misidentification by Namku

FIGURES 1 – 4. Habitus of Larinioides species. Letters indicate columns; numbers indicate rows. 1 — L. jalimovi; 2 — L. ixobolus; 3 — L. sericatus; 4 — L. patagiatus. A, B—females; C, D—males; A, C—dorsal side; B, D—ventral side.

FIGURES 26 – 32. Epigyne of Larinioides species. Letters—columns. Numbers—rows. 26 — L. jalimovi; 27 — L. ixobolus; 28 — L. sericatus; 29 — L. patagiatus; 30 — L. cornutus; 31 — L. folium; 32 — L. chabarovi. A – D—posterior, E—lateral, F—dorsal view. A, C—before maceration; B, D – F—after maceration in NaOH solution. BL = basal lamella, LL = lateral lamella, SC = scapus.

FIGURES 11, 12. Male embolic division of Larinioides jalimovi. Letters indicate columns; numbers indicate rows. 11 — before maceration; 12 — after maceration in NaOH solution; A, B—prolateral view; C, D—retrolateral view. TA = terminal apophysis; STA = subterminal apophysis; EM = embolus.