Trygetus susianus Zamani & Marusik, 2021

Zamani, Alireza & Marusik, Yuri M., 2022, New taxonomic data on Zodariinae (Araneae: Zodariidae) of Azerbaijan, Iran Afghanistan and Pakistan, Zootaxa 5155 (3), pp. 423-438 : 431-432

Trygetus susianus Zamani & Marusik, 2021

Figs 5E , 6G–I , 8A–E , 9C–D , 10A–E

Trygetus Jacksoni: Zamani et al. 2018: 188 (misidentified per Zamani & Marusik 2021: 184).

Trygetus susianus Zamani & Marusik, 2021: 184 , figs 26D, 27E–H (♀).

Material examined. IRAN: Khuzestan Province: 1♂ ( MHNG), north of Andimeshk , 32°41'N 48°15'E, 17.05.1974 (A. Senglet) .

Diagnosis. The female of this species differs from the congeners occurring in the region by having indistinct epigynal fovea (vs. transverse or triangular) and a pair of longitudinal sclerotizations in the center of the epigynal plate ( Fig. 6G–I ). The male of T. susianus differs from the congeners occurring in the Mediterranean by the nonfilamentous embolus (vs. filamentous in other species; cf. Fig. 10B and Levy 1992: figs 35, 43). It differs from T. nakhchivanicus sp. n., the most similar species, by the shape (i.e. not sharply pointed) and size of RTA (shorter than tibia vs. longer), and the tegular apophysis lacking lobes (cf. Fig. 9D and 9B ).

Description. Male. Habitus as in Fig. 5E . Total length 1.85. Carapace 0.86 long, 0.58 wide. Eye sizes:AME: 0.08, ALE: 0.04, PLE: 0.04, vestigial PMEs seem present. Carapace, sternum, labium, chelicerae and maxillae yellowish; carapace with several rows of pores on pars thoracica. Legs yellowish, without annulations. Abdomen with dorsal and ventral scuta, dorsally pale beige, ventrally yellowish. Spinnerets pale, uniform in color. Measurements of Fe: I: 0.55, II: 0.50, III: 0.46, IV: 0.62, rest of the segments missing.

Palp as in Figs 8A–E , 9C–D , 10A–E ; femur almost 3 times longer than wide, 1.2 times shorter than cymbium; patella as long as wide; tibia shorter than wide, RTA consisted of ventral and retrolateral parts divided by furrow (Rf, Fig. 8E ), ventral part rounded, retrolateral part diamond shaped; cymbium unmodified, 2 times longer than wide; bulb almost round, with distinct subtegulum (St), tegular apophysis (Ta) hook-like, lacking distinct lobes, with deep groove ( Fig. 8B ); embolus (Em) broad, originating at about 9 o’clock position, terminal part complex with several outgrowths ( Fig. 10A–E ).

Female. Epigyne as in Fig. 6G–I ; for the description, see Zamani & Marusik (2021). In the original description, the vestigial PMEs were overlooked ( Zamani & Marusik 2021: fig. 26D).

Comments. Although the male specimen described here was collected along with the holotype female, for some reason it was deposited in a separate vial and located only after the species was described.

Distribution. Known only from two localities in Khuzestan Province, southwestern Iran.

Figures

FIGURE 5. Habitus of Trygetus gromovi Marusik, 2011 (A–D), T. susianus Zamani & Marusik, 2021 (E), T. cyrus sp. n. (F) and T. nakhchivanicus sp. n. (G, H). A, F female, dorsal; B same, lateral; C female’s abdomen and posterior part of cephalothorax, ventral; D female’s cephalothorax, anterior; E, H male, dorsal; G same, ventral. Scale bars = 0.2 mm, unless stated otherwise.

FIGURE 6. Epigynes of Trygetus nakhchivanicus sp. n. (A–C), T. gromovi Marusik, 2011 (D–F), T. susianus Zamani & Marusik, 2021 (G–I) and T. Jacksoni Marusik & Guseinov, 2003 (J). A, D, G vulva, dorsal; B, E, H, J intact epigyne, ventral; C, F macerated epigyne, ventral and antero-ventral; I right receptacle, dorsal. D–F after Marusik (2011), G–I after Zamani & Marusik (2021) and J after Marusik & Guseinov (2003). Scale bars: A–I = 0.2 mm (not provided for J). Abbreviations: Bu—bursa, Fo—fovea, Re—receptacle.

FIGURE 8. SEM images of the male palp of Trygetus susianus Zamani & Marusik, 2021. A distal; B–D ventral; E retrolateral. Scale bars: D, E = 0.1 mm (not provided for A–C). Abbreviations: Co—conductor, Rf—furrow of RTA.

FIGURE 9. Male palps of Trygetus nakhchivanicus sp. n. (A–B) and T. susianus Zamani & Marusik, 2021 (C–D). A, C retrolateral; B, D ventral. Scale bars = 0.2 mm.

FIGURE 10. Male palp of Trygetus susianus Zamani & Marusik, 2021. A ventroretrolateral; B prolateral; C dorsal; D, E anteroventral. Scale bar = 0.2 mm. Abbreviations: Co—conductor, Em—embolus, Ta—tegular apophysis, St—subtegulum.