Stemmops murici

Santanna, Manoela & Rodrigues, Everton Nei Lopes, 2018, Five new species and new records of the spider genus Stemmops (Araneae, Theridiidae, Spintharinae) from Brazil, Zootaxa 4524 (2), pp. 174-186: 175-177

publication ID

publication LSID

persistent identifier

treatment provided by


scientific name

Stemmops murici

new species

Stemmops murici  new species

Figs. 1–3View FIGURES 1–4, 10, 11View FIGURES 10–23, 24View FIGURE 24

Type material. Holotype, BRAZIL: Alagoas, Murici, Estação Ecológica de Murici , 09°15’S– 35°51’W, 13– 22.IX.2003, Equipe Biota leg., pitfall-trap, 1M ( IBSP 215203View Materials)GoogleMaps  . Paratypes. BRAZIL: same data the holotype, 1M ( MCN 48734View Materials)GoogleMaps  ; same data the holotype, 1F ( MCN 48734View Materials)GoogleMaps  ; Goiás, Catalão , 18°02’39”S– 48°00’36”W, 10– 16.II.2003, J. P. Guadanucci leg., pitfall-trap, 1F ( MCN 48720View Materials)GoogleMaps  ; Minas Gerais, Matozinhos, Mocambeiro , 19°33’12”S– 44°01’07”W, 08–18.II.2011, C. A. R. Souza leg., 1F ( IBSP 180228View Materials)GoogleMaps  ; same data the anterior paratypes, 1M ( IBSP 189587View Materials)GoogleMaps  , 1F ( IBSP 189582View Materials)  ; Morro do Pilar , 19°14’34”S– 43°22’04”W, 13–17.II.2012, Equipe Carste leg., 1F ( IBSP 189594View Materials)GoogleMaps  ; Taiobeiras, Tocão , 15°48’S– 42°14’W, 17.IV.2002, Equipe Biota leg., pitfall-trap, 1M ( MCN 48739View Materials)GoogleMaps  ; Rio de Janeiro, Volta Redonda, Floresta da Cicuta , 22°34’S– 44°21”W, 18.VI.2001, Equipe Biota leg., night manual collection, 1M ( IBSP 215204View Materials)GoogleMaps  ; same data the anterior paratype, 1M ( IBSP 215205View Materials)GoogleMaps  ; Cachoeiras de Macacu, Reserva Ecológica de Guapiaçu , 22°25’S– 42°44’W, 08.XI.2001, Equipe Biota leg., beating tray, 1M ( IBSP 48738View Materials)GoogleMaps  ; same data the anterior paratype, 1M ( IBSP 215206View Materials)GoogleMaps  ; São Paulo, Peruíbe, Estação Ecológica Júreia Itatins , 24°33’S– 47°13’W, 26.IV–03.V.1999, A. D. Brescovit et al. leg., winkler, 1M ( IBSP 25796View Materials)GoogleMaps  , 1M ( IBSP 25249View Materials)  ; same data the anterior paratype, 1M ( IBSP 25718View Materials)  , 1M ( IBSP 25765View Materials)  , 1M ( IBSP 24692View Materials)  , 1M ( IBSP 25552View Materials)  ; same data the anterior paratypes, 1F ( IBSP 25354View Materials)  , 1F ( IBSP 25689View Materials)  , 1F ( IBSP 25795View Materials)  ; Paraná, Antonina, Reserva Natural  do Rio Cachoeira , 25°41’S– 48°74’W, 23.IX.2005, I. Cizauskas leg., looking down, 1M ( MCN 44635View Materials)  .

Et y mology. The species name is a noun in apposition taken from the type locality.

Diagnosis. Males are similar to Stemmops carius Marques & Buckup, 1996  (see Marques & Buckup 1996, figs. 1, 2) by the shape of embolus and by the theridiid tegular apophysis hook-like apex (vide Marques & Buckup, 1996, figs 1–2), but differ from this species by the embolus short, and trajectory of the embolus that loops far from the tegulum edge, and conductor smaller ( Fig. 1View FIGURES 1–4) than the S. carius  . Females resemble Stemmops carius  (vide Marques & Buckup, 1996, figs. 7–8) by the presence of oval spermathecae, ventral epigynum with a narrow and elongated longitudinal median depression and coiled fertilization ducts, but differ by the spermathecae less separated from each other, in ventral view ( Figs. 2, 3View FIGURES 1–4).

Description. Male holotype (from Estação Ecológica de Murici, IBSP 215203): Total length 1.57. Carapace: length 0.69, width 0.58. Clypeus height: 0.12. Sternum: length 0.44, width 0.39. Chelicerae: length 0.18, width 0.10. Abdomen: length: 0.88, width 0.54, height 0.58. Leg formula IV/I/II/III. Segment length (I/II/III/IV): femora 0.84/0.58/0.50/0.81; patellae+tibiae 0.75/0.73/0.65/1.05; metatarsi+tarsi 1.13/0.86/0.86/1.11; total: 2.73/2.18/2.01/ 2.98. Palp: femora 0.23, patellae 0.06, tibiae 0.08, cymbium 0.33. PME biggest, PME separated from each other by 0.02; AME separated by 0.04. Carapace circular ( Fig. 10View FIGURES 10–23), pale yellow, darkened in median portion after PME. Clypeus concave, laterally. Chelicerae pale yellow. Labium subtriangular, pale yellow. Endites yellow. Ocular region dark except between PME. Sternum pale yellow, with dark dots. Legs pale yellow, except metatarsus and tarsus brown. Abdomen oval ( Fig. 10View FIGURES 10–23), grey with a pale yellow spot above spinnerets and venter lighter.

Female paratype (from Estação Ecológica Júreia Itatins, Peruíbe, IBSP 25354): Total length 1.68. Carapace: length 0.69, width 0.63. Clypeus: height 0.12. Sternum: length 0.42, width 0.39. Chelicerae: length 0.23, width 0.08. Abdomen: length 1.23, width 0.79, height 0.84. Leg formula IV/I/II/III. Segment length (I/II/III/IV): femora 0.84/0.63/0.46/0.75; patellae+tibiae 0.96/0.73/0.60/1.05; metatarsi+tarsi 1.02/0.79/0.79/1.09, total: 2.83/2.16/1.86/ 2.89. Palp: femora 0.18, patellae 0.08, tibiae 0.21, tarsi 0.18. PLE and AME biggest, PME separated from each other by 0.02. Color of carapace ( Fig. 11View FIGURES 10–23), legs and abdomen as in male, except spot in dorsal carapace, in female is less darkened.

Variation. Some paratypes abdomen and carapace pale yellow to white. Males (n= 15): Total length: 1.47– 1.95. Carapace: length 0.65–0.84, width 0.50–0.69 Femur leg I length: 0.65–1.02. Females (n= 8). Total length: 1.40–2.47. Carapace: length 0.52–0.75, width 0.58–0.69. Femur leg I length: 0.81–0.86.

Distribution. Brazil (Alagoas, Goiás, Minas Gerais, Rio de Janeiro, São Paulo and Paraná, Fig. 24View FIGURE 24).


McNeese State University