Philoponella opelli, Faleiro, Bárbara T. & Santos, Adalberto J., 2014

Faleiro, Bárbara T. & Santos, Adalberto J., 2014, Three new species and new records of the orb-weaving spider genus Philoponella (Araneae, Uloboridae) from Brazil and Ecuador, Zootaxa 3754 (5), pp. 572-582 : 573-575

publication ID	https://doi.org/ 10.11646/zootaxa.3754.5.3
publication LSID	lsid:zoobank.org:pub:A0F48E2A-5B80-4925-800C-F38916B6AACF
DOI	https://doi.org/10.5281/zenodo.6139091
persistent identifier	https://treatment.plazi.org/id/7805195E-FFC1-E059-30CC-FD1CFC47E792
treatment provided by	Plazi
scientific name	Philoponella opelli
status	sp. nov.

Treatment

Philoponella opelli View in CoL new species

( Figs. 1 View FIGURE 1 A – G. A – B AB, 2A–G, 5A–F, 7A)

Types. Male holotype (UFMG 11223) from Brazil: Santa Catarina: São Bento do Sul (Centro de Estudos e Pesquisas Ambientais Rugendas, 26º19’S 49º18’W, 617 m), 16–20 December 2011, I.L.F. Magalhães et al. leg. Female paratype (UFMG 7770) from Brazil: Mato Grosso: Cotriguaçu (Fazenda São Nicolau, 9º50’S 58º14’W), 2– 14 October 2010, A.J. Santos leg.

Etymology. The species name is a patronym in honour of Brent D. Opell, in recognition of his extensive contributions to the current knowledge on uloborid systematics, evolution, and natural history.

Diagnosis. Males of Philoponella opelli resemble those of the P. republicana species group (see Opell 1979: 524) in having the conductor spike shorter than the apical projection of the median apophysis spur, but differ from all other species of the group by having the conductor spike rounded in the apex ( Figs. 2A,B View FIGURE 2 A – G ; 5A,B) and by the retrolateral tubercle of the palpal femur larger than the prolateral one ( Fig. 2G View FIGURE 2 A – G ). Females resemble P. vittata (Keyserling, 1881) in having the copulatory openings in the posterior sixth of the atrium and in the copulatory ducts not coiled, but differ by having the copulatory ducts with one loop anteriorly to the connection with the spermatheca ( Figs. 2E View FIGURE 2 A – G , 5 View FIGURE 5 A – F EF).

Description. Male (holotype). Total length 3.71, carapace length 1.55, sternum length 0.86, abdomen length 2.16, leg I, length of articles: femur 2.29, patella 0.61, tibia 1.81, metatarsus 1.83, tarsus 0.64. Length of tibiae: II 0.94, III 0.51, IV 1.04. Carapace pale-yellow with two marginal longitudinal dark-brown bands and two paramedian longitudinal diffuse dark bands ( Fig. 1A View FIGURE 1 A – G. A – B ). Chelicerae, endites, labium and sternum pale-yellow. Legs I and IV pale-yellow with dorsal dark bands, legs II and III pale-yellow ventrally and dark brown dorsally ( Fig. 1A View FIGURE 1 A – G. A – B ). Abdomen light grey with dorsal white spots and lateral black spots, one central and one anterior ( Fig. 1A View FIGURE 1 A – G. A – B ). Anal tubercle and spinnerets light grey. Embolus long, in clockwise direction in the left palp ( Figs. 2A, B View FIGURE 2 A – G ; 5A). Median apophysis bulb not tumescent, covering the embolus ( Figs. 5A, B View FIGURE 5 A – F ). Median apophysis spur hooked ventrally ( Figs. 2A, B View FIGURE 2 A – G ; 5A, B). Conductor basal lobe longer than wide, canoe-shaped, conductor spike rounded ( Figs. 2A, B View FIGURE 2 A – G ; 5A– G). Leg I with plumose and filiform setae and squamous macrosetae ( Fig. 5D View FIGURE 5 A – F ).

Female (paratype). Total length 4.09, carapace length 1.17, sternum length 0.76, abdomen length 2.92, leg I, length of articles: femur 1.55, patella 0.28, tibia 1.53, metatarsus 1.70, tarsus 0.89. Length of tibiae: II 0.69, III 0.46, IV 1.04. Carapace homogeneously dark-brown ( Fig. 1B View FIGURE 1 A – G. A – B ). Chelicerae, endites, labium and sternum light brown. Leg femora brown, tibiae light brown dorsally and brown in the ventral side; patellae, metatarsi and tarsi pale-yellow ( Fig. 1B View FIGURE 1 A – G. A – B ). Dorsum of abdomen dark brown laterally, light brown medially, with three pairs of transversal, dark-brown spots ( Fig. 1B View FIGURE 1 A – G. A – B ). Transversal spots paler in the centre. Venter of abdomen dark brown laterally, light brown medially, with dark brown rectangular post-epigastric area. Anal tubercle and posterior lateral spinnerets brown, median and anterior lateral spinnerets pale-yellow. Epigynum with large and deep atrium, posterior rim continuous, copulatory openings in the posterior half of atrium ( Fig. 2C View FIGURE 2 A – G ), posterior plate hexagonal ( Fig. 2D View FIGURE 2 A – G ). Spermathecae oval, covered with pores in the anterior and ectal surface ( Figs. 5E, F View FIGURE 5 A – F ); copulatory ducts with a 180° loop anterior to spermathecae ( Figs. 2E View FIGURE 2 A – G , 5 View FIGURE 5 A – F EF), fertilization ducts adhered to the posterior plate ( Figs. 2E View FIGURE 2 A – G ).

Variation. Male (N = 17). Carapace length 1.14–1.53, sternum length 0.53–0.76, abdomen length 1.37–2.03. Female (N = 2). Carapace length 1.17–1.27, sternum length 0.76–0.92, abdomen length 2.92–3.69.

Additional material examined. Brazil, Acre: Senador Guiomard (Estação Experimental Catuaba, 10°5’8”S 67°37’30”W, 214 m), 9–18.IV.2012, P.R. Zanoli & I.A. Barros leg., 1♂ ( UFMG 12255); 1♂ ( UFMG 12256); ditto, 6–16.VII.2012, P.R. Zanoli & I.A. Barros leg., 3♂ ( UFMG 12257); 2♂ ( UFMG 12258); 1♂ ( UFMG 12259); 1♂ ( UFMG 12260); Mato Grosso: Cotriguaçu (Fazenda São Nicolau, 9°50’24”S 58°14’54”W), 2–14.X.2010, A.J. Santos leg., 1♂ ( UFMG 11448); 2♂ 1♀ ( UFMG 11791); Santa Catarina: São Bento do Sul (Centro de Estudos e Pesquisas Ambientais Rugendas, 26°19’30”S 49°18’26”W, 617 m), 16–20.XII.2011, I.L.F. Magalhães et al leg., 1♂ ( UFMG 11790). Ecuador, Napo: (Estación Biológica Jatun-Sacha, 1°3’57”S 77°37’W, 410 m), 1–5.XII.2009, A.J. Santos leg., 3♂ ( UFMG 10959).

Distribution. Northern to southern Brazil and Ecuador ( Fig. 7A View FIGURE 7 A – C ).