Nops blandus (Bryant, 1942)

Sánchez, Alexander, Brescovit, Antonio D. & Alayón, Giraldo, 2015, Four new caponiids species (Araneae, Caponiidae) from the West Indies and redescription of Nops blandus (Bryant), Zootaxa 3972 (1), pp. 43-64: 44-45

publication ID

http://dx.doi.org/10.11646/zootaxa.3972.1.3

publication LSID

lsid:zoobank.org:pub:FA022B0E-9F20-4A4C-A0EA-112B60BD42B8

persistent identifier

http://treatment.plazi.org/id/03E5C57F-5C7E-4C71-FF77-EBBF372AF90D

treatment provided by

Plazi

scientific name

Nops blandus (Bryant, 1942)
status

 

Nops blandus (Bryant, 1942) 

Figures 1 –6View FIGURES 1 – 6, 25–36View FIGURES 25 – 31View FIGURES 32 – 36, 77View FIGURES 77 – 80, 81View FIGURES 81 – 83

Caponina blanda: Bryant, 1942: 328  , fig. 17 ( Male holotype from Christiansted, St. Croix, U. S. Virgin Island (17 ° 44 ' 37 " N, 64 ° 42 ' 54 " W), H.A. Beatty, deposited in MCZAbout MCZ 20539View Materials, examined).

Nops blandus: Chickering, 1967: 4  , fig. 1 (except specimen from Haiti MCZAbout MCZ 128296).

Nops blandus: Sánchez  – Ruiz, 2005: 26, fig. 3 (except specimens from Dominican Republic IBSPAbout IBSP 166393, 166394 and MNHNSDAbout MNHNSD 09.1445).

Additional material examined. U.S. VIRGIN ISLANDS: Saint John: vii. 1966, A.M. Chickering, 2 ♂ 4 ♀ 12 imm. ( MCZAbout MCZ 128295). iii. 1964, A.M. Chickering, 1 ♀ 2 imm. ( MCZAbout MCZ 128243). 11.vii. 1974, reef bay trail, W.B. Muchmore, 1 ♀ ( AMNHAbout AMNH). Coral Bay, near Butler's house (18 ° 20 ' N 64 ° 42 ' W), 22.vii. 1975, W.B. Muchmore, 1 imm. ( AMNHAbout AMNH). Coral Bay (18 ° 20 ' N 64 ° 42 ' W), 4.v. 1984, W.B. Muchmore, 5 imm. ( FSCAAbout FSCA). Coral Bay (18 ° 20 ' N 64 ° 42 ' W), 9.iii. 1984, W.B. Muchmore, litter rocks, 1 ♂ 1 ♀ 4 imm. ( FSCAAbout FSCA). Europa Bay (18 ° 19 ' N 64 ° 43 ' W), iii. 1984, W.B. Muchmore, pitfall trap in woodland, 2 ♀ 2 imm. ( FSCAAbout FSCA). Europa Bay (18 ° 19 ' N 64 ° 43 ' W), iii – v. 1984, W.B. Muchmore, pitfall trap, 5 ♂ 1 imm. ( FSCAAbout FSCA). Yawzi Point (18 ° 18 ' 56 " N, 64 ° 43 ' 32 ") W, iii –v. 1984, W.B. Muchmore, pitfall trap, 1 ♂ ( FSCAAbout FSCA). Saint Thomas: vii. 1966, A.M. Chickering, 4 imm. ( MCZAbout MCZ 128242).

ii. 1964, A.M. Chickering, 1 ♀ 2 imm. ( MCZAbout MCZ 128244). BRITISH VIRGIN ISLANDS: Virgin Gorda: 18.viii. 1966, A. Chickering, 2 ♂ 1 ♀ 3 imm. ( MCZAbout MCZ 128298).

Diagnosis. Males of Nops blandus  resemble those of Nops finisfurvus  n. sp. by having a short and weakly curved embolus, but can be distinguished by the form of the tip with just one small projection ( Fig. 5View FIGURES 1 – 6), a broader embolar base ( Fig. 77View FIGURES 77 – 80), and by having an oval bulb ( Figs. 25–27View FIGURES 25 – 31). Females can be distinguished by the wide, straight and sclerotized anterior margin of receptaculum, with a median concavity on the posterior wall, and a large membranous sac ( Figs. 33View FIGURES 32 – 36, 81View FIGURES 81 – 83).

Redescription. Male ( MCZAbout MCZ 128295): Carapace immaculate orange, elongated oval with a black and slightly elevated ocular tubercle; pars cephalica not elevated, pars thoracica slightly sloping posteriorly ( Fig. 28View FIGURES 25 – 31), thoracic groove absent. Two black, oval eyes of equal size, separated by about two –thirds their diameter ( Fig. 29View FIGURES 25 – 31). Chelicerae light orange. Endites orange except for anterior tips due a white membranous projection, wide, convergent but not touching, with middle part wider than distal and proximal margins and forming an obtuse angle of about 120 degrees ( Fig. 31View FIGURES 25 – 31), covered with scattered long setae. Labium orange, broad, fused to sternum along obsolete posterior groove, rounded and bordered in apical part ( Fig. 31View FIGURES 25 – 31). Sternum orange, darker at the edge, oval, surface with fine reticular lines with few weak pits and numerous stiff setae around the edge ( Fig. 31View FIGURES 25 – 31). Coxae light orange. Legs orange, formula 4123; metatarsi entire, anteriors with a median translucent ventral longitudinal keel and with a distal, translucent ventral extension of membrane between anterior tarsi and metatarsi; all tarsi subsegmented, with three claws, paired claws with 5 teeth, unpaired claw elongated and dorsally reflexed in all legs, without teeth. Trichobothria present on metatarsi and tarsi in a single row. Palp with tibia excavated ventrally; cymbium elongated rounded ( Figs. 1–2View FIGURES 1 – 6), ventral surface densely covered with strong setae, and an oval pad of fine chemoreceptor hairs on dorsal distal part ( Figs. 3–4View FIGURES 1 – 6), with a globose oval bulb ( Figs. 25–27View FIGURES 25 – 31); embolus weakly curved, distinctly shorter than tibial length ( Figs. 25, 27View FIGURES 25 – 31), base shorter than tibia width, tip of embolus with one small projection ( Figs. 5–6View FIGURES 1 – 6). Abdomen grayish green dorsally ( Fig. 29View FIGURES 25 – 31), lighter ventrally, but darker in distal part around spinnerets ( Fig. 30View FIGURES 25 – 31), with only slightly sclerotized epigastric and postepigastric scuta. Spinnerets light gray, six, in typical caponiid arrangement. Total length 5.40, carapace 2.00 long, 1.50 wide. Eyes 0.12 major diameter, 0.07 minor diameter. Leg measurements: I: femur 6.20 / patella 1.50 / tibia 6.70 / metatarsus 6.70 / tarsus 1.50; II: 6.00/ 1.50 / 6.50 / 6.60 / 1.80; III: 7.30 / 1.40 / 6.50 / 7.50 / 1.60; IV: 7.20 / 1.40 / 7.60 / 7.70 / 1.70. Sternum 1.70 long, 1.20 wide. Palpal tibia 1.10 long, 0.70 wide.

Female ( MCZAbout MCZ 128295): Carapace, chelicerae, labium, legs, coxae, endites and sternum as in the male ( Figs. 34, 36View FIGURES 32 – 36). Abdomen as in the male, but darker. Anterior plate (ap) weakly sclerotized, almost reaching proximal part of abdomen ( Fig. 32View FIGURES 32 – 36); external sclerotization of spiracles (ess) darker, small, anteriorly starting from anterior spiracles (as), passing close to the lateral extensions of posterior plate (lep), extending posteriorly less than the width of posterior spiracles and ending in the posterior edge of posterior spiracles ( Figs 32View FIGURES 32 – 36, 81View FIGURES 81 – 83). Internal genitalia with a wide, straight and sclerotized anterior margin of receptaculum (amr) with a concavity on the posterior wall, and a large membranous sac (ms) ( Figs. 33View FIGURES 32 – 36, 81View FIGURES 81 – 83). Spinnerets as in male ( Fig. 35View FIGURES 32 – 36). Total length 5.80. Carapace 1.90 long, 1.30 wide. Eyes 0.12 major diameter, 0.07 minor diameter. Leg measurements: I: femur 7.00/ patella 1.40 / tibia 7.80 / metatarsus 7.90 / tarsus 1.90; II: 7.90 / 1.40 / 8.50 / 8.60 / 1.80; III: 7.60 / 1.40 / 7.50 / 8.60 / 1.60; IV: 7.00/ 1.40 / 7.40 / 7.30 / 1.70. Sternum 1.80 long, 1.40 wide. Palpal tibia 1.30 long, 0.80 wide.

Variation. Males from Virgin Gorda Island have slight differences in the base of embolus. Males (n= 4): Total length 4.20−5.40, carapace 2.30 −3.00 long, femur I 4.60 −7.00 long. Palpal tibia 0.80−0.95 long, 0.40−0.45 wide. Females (n= 6): total length 5.10−6.20, carapace 2.10−3.10 long, femur I 4.00− 5.80. Palpal tibia 0.60 −1.00 long, 0.20−0.25 wide. Palpal tarsus 0.70−1.05 long.

Distribution. British and U. S. Virgin Islands ( Fig. 84View FIGURES 84 – 85).

MCZ

Museum of Comparative Zoology

IBSP

Instituto Biologico de Sao Paulo

MNHNSD

Museo Nacional de Historia Natural, Santo Domingo

AMNH

American Museum of Natural History

FSCA

Florida State Collection of Arthropods, The Museum of Entomology

Kingdom

Animalia

Phylum

Arthropoda

Class

Arachnida

Order

Araneae

Family

Caponiidae

Genus

Nops

Loc

Nops blandus (Bryant, 1942)

Sánchez, Alexander, Brescovit, Antonio D. & Alayón, Giraldo 2015

2015
Loc

Nops blandus: Sánchez

Ruiz 2005: 26

2005
Loc

Nops blandus:

Chickering 1967: 4