Ceriomura lacinia Rubio, Baigorria & Stolar, 2023

Rubio, Gonzalo D., Baigorria, Julián E. M. & Stolar, Cristian E., 2023, Unveiling some unknown jumping spiders (Araneae: Salticidae) from Argentina: descriptions of seven new species, Peckhamia 294 (1), pp. 1-22 : 5-13

Ceriomura lacinia Rubio, Baigorria & Stolar , sp. nov.

LSID urn:lsid:zoobank.org:act:F5A7D163-F70D-43CA-96E6-3F809D097BB4 Figures 13-23

Type material. Male holotype (IBSI-Ar 1191) from Argentina, Misiones, Karadya Bio-Reserve (S25.859°, W53.961°, 404 m a.s.l.), 15 October 2018, J . Baigorria coll .

Systematic note. The female of C. lacinia sp. nov. is the single specimen available, and corresponds to a misassigned female (IBSI-Ar 0254) as paratype to C. damborskyae Rubio & Baigorria, 2016 (see other material examined). The conspecificity was determined by the habitus pattern of a subadult male specimen (IBSI-Ar 1823) found with the holotype, which is exactly the same as that of the female IBSI-Ar 0254 ( Figures 19-23 ). Ceriomura damborskyae is now known only from the male.

Etymology. The specific epithet is a noun in apposition originated from the Latin word lacinia , meaning a tab and referring to the presence of the tab-like extension on the tegulum basal division of the male palp.

Diagnosis. Ceriomura lacinia sp. nov. can be easily distinguished from other Ceriomura by having the TBD with a distinctive tab-like extension (tegular tab: TgT – see Edwards 2015) that is oriented in a retrolateral apical direction; furthermore, male has the vRTA with the tip pointing retrolaterally ( Figures 14-15 ). The female resembles that of C. cruenta (Peckham & Peckham, 1894) in a similar body pattern, but differs in the COs, which are less advanced, closer to the epigastric furrow (fig. 2 in Rubio & Baigorria 2016).

Description. Male (holotype). Carapace length 2.59, width 2.00; abdomen length 3.60. Carapace ( Figure 13 ) low, mahogany brown, cephalic region with five conspicuous yellow spots contrasting; anterior median eyes encircled by tufts of yellowish orange setae, other eyes encircled by black rings; thoracic region with an inverted U-shaped dark curved line in the center. Clypeus brown, very low, with white, somewhat translucent hairs on the lower edge. Chelicerae dark brown, vertical, with four teeth (the third proximal larger) on promargin and two teeth on retromargin. Palp brown, tibia wide with RTA and vRTA. RTA directed dorsally, flattened and short, with a very small point; vRTA pointed, directed retrolaterally, well-sclerotized. Embolus slightly flattened, well-sclerotized, arises on the dorsal side of the bulb between this and the cymbium, at the level of the division between the TBD and TDD when viewed ventrally; tip of the embolus accommodated on the cymbium. Spermophore visible in the TBD. Legs I and II stout, dark brown; prolateral margin of femur, patella and tibia darker. Legs III and IV pale yellow, covered with scattered hairs. Tibia I with two pairs of bulbous setae in ventrally positioned. Abdomen cylindrical, elongated ( Figures 13 , 19 ); coloration pale light brown, with grayish and dark brown scattered spots, more concentrated on the sides; dorsum covered with sparse black hairs; venter dark grayish. Spinnerets long, grayish. Live specimens have irregular orange spots arranged in bilateral symmetry.

Female (misassigned paratype of C. damborskyae IBSI-Ar 0254): For full description see Rubio & Baigorria (2016: 270, fig. 2). Habitus as in Figures 20-23 .

Natural history. Specimens were sampled in small-fruit crop surrounded by primary growth forest with many creepers.

Distribution. Only known from northeast of Misiones, Argentina.

Other material examined. 1 female (IBSI-Ar 0254), from Argentina, Misiones, Karadya Bio-Reserve (S25.859°, W53.961°, 404 m a.s.l.), 10 November 2014, J . Baigorria coll .; 1 male subadult (IBSI-Ar 1823) same locality and coll ., 15 October 2018.

Tribe Thiodinini Simon, 1901

Genus Thiodina Simon, 1900

Thiodina tefyta Rubio, Baigorria & Stolar , sp. nov. LSID urn:lsid:zoobank.org:act:17ECF683-05BC-4651-B92A-5760C66779E2 Figures 24-39

Type material. Female holotype (IBSI-Ar 1663) from Argentina, Salta, National Route 81, near Hickmann (S23.1904º, W63.6401º), 3 December 2021, C . Stolar coll . Paratypes: 3 males, 2 females (IBSI-Ar 1757) from Argentina, Salta, Animaná (S25.9684°, W65.9531°), 8 July 2022, same coll .

Note. Due the reduced body size and the general appearance, T. tefyta sp. nov. could be part of the minuta group proposed by Bustamante and Ruiz (2017), with T. minuta (Galiano, 1977) , T. perian Bustamante & Ruiz, 2017 , T. camilae Bustamante & Ruiz, 2020 and T. tyrioni Bustamante & Ruiz, 2020 .

Etymology. The specific name is a contraction of Estefanía, referring to the daughter of the first author; the gender is feminine.

Diagnosis. Thiodina tefyta sp. nov. resembles the other Thiodina in having a pattern of dark/clear longitudinal stripes on the abdomen, like T. firme Bustamante & Ruiz, 2017 and T. minuta somewhat discontinued ( Figures 25, 27 ); also resembles the other Thiodina in the general pattern of female genitalia. Females of T. tefyta sp. nov. are easily distinguished from other Thiodina by having a more circular atrium, as long as wide, in the other Thiodina being wider than long and with a horseshoe shape (except in T. minuta which is oval), and by having more spherical spermathecae ( Figures 28-33 ). Male resembles that of T. nicoleti Roewer, 1951 in the general structure of copulatory organ, but can be distinguished from this by having a shorter, slightly straighter embolus, not resting proximally on the bulb, and by having a keel on the outer portion of the paturon of each chelicera; it also differs by having a different dorsal abdominal pattern; compare Figure 34 in this paper with fig. 1 in Bustamante et al. (2015).

Description. Female (holotype). Carapace length 1.41; abdomen length 1.84. Carapace ( Figures 24-25, 27 ) light brown-orange, slightly darker on thoracic slope, covered evenly with few recumbent black separate setae and with creamy feathery hairs (visible in life). Eyes rimmed with black. Clypeus with white setae, most visible in living specimen. Chelicerae pale, vertical, with a slight convexity on the anterior middle of the paturon, and a few setae near claw; four promarginal and two to three (left) retromarginal teeth. Palps and legs yellowish-pale colored, without rings. Abdomen dorsum pale yellow, with one longitudinal brown stripe, sides with brown spots aligned longitudinally (in dorsal view as three stripes), venter and spinnerets pale yellow ( Figure 26 ). Epigyne with a conspicuous atrium from which two spermathecae are clearly visible, and short copulatory ducts posteriorly and dorsally connected ( Figures 28-33 ).

Male (paratype) IBSI-Ar 1757. Carapace length 1.45; abdomen length 1.80. Carapace ( Figures 34-36 ) as in the female. Clypeus brown, with few translucent setae. Chelicerae vertical, spine-like setae on the anterior face of the paturon, a depression on inner portion and a keel on the outer portion of the paturon of each chelicera; three promarginal teeth and one (absent right) retromarginal tooth. Palps and legs yellowish-pale colored, without rings. Palp small, bulb spherical; small vRTA, something square; RTA thin, with the tip curved pointing to dorsum of cymbium; cymbium small, barely protruding from bulb; embolus fixed to tegulum, arising prolaterally; embolus tip with a small curvature ( Figures 38-39 ). Abdomen dorsum pale yellow, homogeneous, without marks, covered evenly with few black scattered setae; the other paratypes as the female holotype. Venter and spinnerets pale yellow ( Figure 35 ).

Natural history. Specimen was sampled with beating on xerophilous shrubs.

Distribution. Known from central and northwest Argentina, in Salta, Tucumán and Córdoba provinces.

Other material examined. 1 male, 2 females, 1 subadult male (IBSI-Ar 1756) from Argentina, Tucumán, Rincón de Quilmes (S26.4814°, W66.0638°), 10 July 2022, C . Stolar coll .; 1 male (IBSI-Ar 1859) from Córdoba, Capital (S31.3384°, W64.1304°), July 2015, morphospecies # 45 in Argañaraz's doctoral thesis, C . Argañaraz coll .

Tribe Dendryphantini Menge, 1879

Genus Lumptibiella Rubio, Baigorria & Stolar, 2022

Lumptibiella demagistrisi Rubio, Baigorria & Stolar , sp. nov. LSID urn:lsid:zoobank.org:act:32939D15-0078-4D15-A394-1C934ED08E8C Figures 40-49

Type material. Male holotype (IBSI-Ar 1879) from Argentina, Buenos Aires, Partido de la Costa, Punta Médanos (S36.8884°, W56.7021°), 28 November 2022, A . De Magistis coll . Paratype: 1 female (IBSI-Ar 1873) from Partido de la Costa, San Clemente Del Tuyú, Reserva Municipal Punta Rasa (S36.3205°, W56.7566°), same date and collector .

Etymology. The specific name is a patronym in honor of Dr. Alberto Antonio De Magistris, great friend, devoted conservationist and better scientist who collected many salticid species in Argentina, and helped preserve several areas that they inhabit.

Diagnosis. Lumptibiella demagistrisi sp. nov. resembles L. camporum Rubio, Baigorria & Stolar, 2022 and L. chacoensis Rubio, Baigorria & Stolar, 2022 in having the RTA with an elongated, double curved nail shape and the lump tibial process pointed ( Figure 44 ), and L. camporum in having the embolus longer, with a loop of one turn (unique to these two species) and the female anterior stretch of CD non-sclerotized first section ( Figure 49 ); but L. demagistrisi sp. nov. differs from those mentioned and the other of the genus by having a sclerotized drop-shaped embolus base (EB) ( Figures 43-45 ; compare with illustrations in Metzner, 2023) and COs that enter laterally to the CD stretch (not anteriorly) ( Figures 48-49 ; compare with illustrations in Metzner, 2023); the female also differs from L. camporum in the absence of an atrium.

Description. Male (holotype IBSI-Ara 1879). Carapace length 2.08, width 1.70; abdomen length 2.28. Carapace ( Figures 40-42 ) mahogany, orange, with a darker spot in the middle between the ALE and PLE; covered with a few translucent scale-like setae and slightly longer black hairs; eye area trapezoidal with PEs wider than AEs, eyes rimmed in black. Two lines of conspicuous white setae, each from the ALE to the thoracic slope passing below the PEs. Thoracic slope pronounced. Clypeus dark brown, narrow with some long hairs, somewhat aligned. Chelicerae vertical; one large promarginal tooth and two retromarginal teeth (one very large and one very small), claw with a conspicuous medial anterior tooth ( Figure 42 ). Palp dark brown, blackish; cymbium with black scattered hairs, lighter, shorter and denser at the apex, with an apical retrolateral groove where the embolus fits ( Figures 43-44 ). RTA with nail shape of broad base when seen dorsally, and another lump-shaped process on the tibia retrolateral side. Embolus long, with a loop of one turn, sclerotized with a drop-shaped basal part (EB), tip towards apex ( Figure 43 ). Legs II to IV light brown colored; leg I stronger, femur blackish, same on ventral side of tibia and metatarsus, tarsus pale. Abdomen yellowish orange, in dorsal view bordered by a conspicuous band of white setae that closes completely at the level of the anal tubercle ( Figures 40-41 ).

Female (paratype). Carapace length 1.90, width 1,52; abdomen length 2.60. Carapace ( Figures 46-47 ) orange, light brown, with two slightly darker spots in the middle between the PME and PLE, covered with a few translucent scale-like setae (more on sides and thoracic slope) and isolated black hairs; eye area trapezoidal as in male. Thoracic slope pronounced. Clypeus narrow with numerous scaly yellow hairs, aligned. Chelicerae vertical; two promarginal teeth and one retromarginal tooth. Palps and legs light brown, forelegs slightly darker. Abdomen pale, slightly darker on the cardiac area. Epigyne ( Figures 48-49 ) medium size plate, sclerotized, without atrium, a small posterior pocket inverted U-shaped ( Figure 48 ). CDs starting in two COs that enter laterally in a broad stretch and directed first medially then posteriorly with some coils. Spermatheca very small, somewhat spherical, located posteriorly.

Natural History. Inhabits grasslands between low sand dunes.

Distribution. Only known from Partido de la Costa, in Buenos Aires.

Other material examined. 1 male (IBSI-Ar 1874) from Argentina, Buenos Aires, Partido de la Costa, Punta Médanos (S36.8884°, W56.7021°), 28 November 2022, A . De Magistis coll .; 1 female (IBSI-Ar 1876) from Partido de la Costa, San Clemente Del Tuyú, Reserva Municipal Punta Rasa (S36.3205°, W56.7566°), 27 November 2022, same coll .

Figures

Figures 13-18. Male of Ceriomura lacinia sp. nov. (holotype IBSI-Ar 1191). 13, Habitus dorsal. 14, Left palp, ventral view. 15, Same, drawn. 16, Same, photo retrolateral view. 17, Same, dorsal. 18, Same, prolateral.

Figures 19-23. Dorsal habitus of Ceriomura lacinia sp. nov. specimens. 19, Male and subadult male in ethanol. 20, Same, female. 21, Same, dry. 22-23, Photographs from nature of an immature.

Figures 24-27. Female of Thiodina tefyta sp. nov. (holotype IBSI-Ar 1663). 24, Habitus frontal. 25, Same, dorsal. 26, Same, ventral. 27, Same, lateral.

Figures 28-33. Cleared epigyne of Thiodina tefyta sp. nov. (holotype IBSI-Ar 1663). 28, Ventral view. 29-30, Same, different focus. 31, Same, dorsal view. 32-33, Same, different focus.

Figures 34-39. Male of Thiodina tefyta sp. nov. (paratype IBSI-Ar 1757). 34, Habitus dorsal. 35, Same, lateral. 36, Same, frontal. 37, Right anterolateral carapace. 38, Left palp, ventral view. 39, Same, retrolateral.

Figures 40-45. Male of Lumptibiella demagistrisi sp. nov. (holotype IBSI-Ar 1879). 40, Habitus dorsal. 41, Same, lateral. 42, Same, frontal. 43, Left palp, ventral view. 44, Same, retroventral. 45, Same, retrolateral.

Figures 46-49. Female of Lumptibiella demagistrisi sp. nov. (paratype IBSI-Ar 1873). 46, Habitus dorsal. 47, Same, lateral. 48, Epigyne, ventral view. 49, Same, cleared.