Acanthoctenus remotus Chickering, 1960,

Polotow, Daniele & Brescovit, Antonio D., 2012, An update on tropical Ctenidae from Jamaica (Arachnida: Araneae), Zootaxa 3481, pp. 39-46: 40-42

publication ID

http://doi.org/ 10.5281/zenodo.212918

publication LSID

lsid:zoobank.org:pub:F333972F-6313-4D6A-9C45-2F22DF2A04C7

persistent identifier

http://treatment.plazi.org/id/256ED02A-FFED-FFD4-9997-2007C1ACFF40

treatment provided by

Plazi

scientific name

Acanthoctenus remotus Chickering, 1960
status

 

Acanthoctenus remotus Chickering, 1960 

Figs 1 A –D

Acanthoctenus remotus Chickering, 1960: 81  , figs 1–6 (male holotype and female paratype from Upper Mountain View [18 o 01’N, 76 o 54 ’W], St. Andrew Parish, Jamaica, 15.I. 1950, C.B. Lewis col.; male paratype with same locality as holotype, 15.V. 1950, C.B. Lewis; female paratype from Cross Roads [18 o 01’N, 76 o 54 ’W], St. Andrew Parish, Jamaica, 3.XII. 1950, R.P. Bengry col., all MCZ, examined).

Other material examined. JAMAICA: St. Andrew Parish, Upper Mountain View (18 o 01’N, 76 o 54 ’W), 1 female, II. 1951, C.B. Lewis col. ( MCZ); Half-Way Tree (18 o 01’N, 76 o 54 ’W), 2 females, 18.X. 1950, R.P. Bengry col. ( MCZ).

Diagnosis. Males of Acanthoctenus remotus  (Figs 1 A –B) resemble those of A. spiniger  (Lehtinen 1967: 458, fig. 420) by the curved tibia, short and conical retrolateral tibial apophysis and presence of a distal projection on the median apophysis, but can be distinguished by the median apophysis larger distally, a shorter retrolateral cymbial projection and a spine-like embolus with a broader base. Females of A. remotus  (Fig. 1 C) resemble those of A. spiniger  (Lehtinen 1967: 458, fig. 414) by the shape of the median sector, but can be distinguished by the larger depression anterior of the copulatory opening.

Description. Male ( MCZ, holotype). Colouration: pale brown, except the PLE and ALE on black tubercles. Total length 11.30. Carapace 5.20 long, 4.50 wide. Clypeus 0.30 high. Eye diameters: AME 0.20, ALE 0.20, PME 0.32, PLE 0.33. Chelicerae with 3 promarginal teeth, median largest; 3 retromarginal subequal teeth; without intermarginal denticles. Leg measurements: I: femur 8.40 / patella 3.00/ tibia 10.30 / metatarsus 9.70 / tarsus 2.60 / total 34.00; II: 7.50 / 2.70 / 7.60 / 7.60 / 2.40 / 27.80; III: 6.00/ 2.10 / 5.30 / 6.60 / 2.10 / 22.10; IV: 8.00/ 2.30 / 7.30 / 9.90 / 2.70 / 30.20. Leg formula 4123. Leg spination: tibia I v 2 - 2 - 2 - 2 - 2 - 2 - 2, r 1 - 1 - 1 - 1 - 1 - 1, p 1 - 1 - 1 - 1 - 1, II v 2 - 2 - 2 - 2 - 2 - 2, r 0- 1 - 1 - 1 - 1, p 0-1 - 1 - 1 - 1, III v 2 - 2 - 2, r 1 - 1 - 1, p 1 - 1 - 1, IV v 2 - 2 - 2, r 1 - 1 - 1, p 1 - 1; metatarsus I and II v 2 - 2 - 2 - 1 ap, r 1 - 1 - 1 - 1, p 1 - 1 - 1 - 1, III v 2 - 2 - 2, r 1 - 1 - 1, p- 1 - 1 - 1, IV v 1 r- 1 p- 1 r- 1 p- 1 r- 2, r 1 - 1 - 1, p 1 - 1 - 1. Palp (Figs 1 A –B): tibia with two elongated prolateral spines; tibia shorter than cymbium; cymbium elongated, with several short distal spines; tegulum oval; median apophysis almost in central area of tegulum; conductor hyaline and elongated, covering tip of the embolus.

FIGERES 1 A –D. Acanthoctenus remotus Chickering. A  –B. Male palp (A. ventral view; B. retrolateral view). C –D. Epigyne (C. ventral view; D. dorsal view). Scale bars: 1mm. Abbreviations: C, conductor; CD, copulatory ducts; CY, cymbium; E, embolus; FD, fertilization ducts; LS, lateral sector; MA, median apophysis; MS, median sector; RTA, retrolateral tibial apophysis; S, spermathecae; TI, tibia. Arrow pointing to copulatory opening.

Female ( MCZ, paratype). Colouration as in male, except reddish brown chelicerae. Total length 14.50. Carapace 5.80 long, 4.70 wide. Clypeus 0.30 high. Eye diameters: AME 0.27, ALE 0.25, PME 0.32, PLE 0.35. Chelicerae with 3 promarginal teeth, median largest; 3 retromarginal subequal teeth; without intermarginal denticles. Leg measurements: I: femur 6.70 / patella 2.90 / tibia 7.30 / metatarsus 6.10 / tarsus 1.70 / total 24.70; II: 6.20 / 2.60 / 6.00/ 5.40 / 1.50 / 21.70; III: 5.30 / 2.10 / 4.30 / 4.80 / 1.40 / 17.90; IV: 6.80 / 2.10 / 5.90 / 7.60 / 2.00/ 24.40. Leg formula 4123. Leg spination: tibia I v 2 - 2 - 1 r- 1 p- 1 r- 2 - 2 - 2 - 2 - 2, r 0-1 - 1 - 1 - 1, p 0-1 - 1 - 1 - 1, II v 2 - 2 - 1 p- 1 r- 1 p- 1 r- 2 - 2 - 2 - 1 p, r 0-1 - 1 - 1 -0, p 1 - 1 - 1 - 1 -0, III v 2 - 2 - 2, r 1 - 1 - 1, p 1 - 1 - 1, IV v 2 - 2 - 2, r 1 - 1, p 1 - 1; metatarsus I and II v 2 - 2 - 2, p 1 - 1 - 1, r 1 - 1, III v 2 - 2 - 2, r 1 - 1 - 1, p- 1 - 1 - 1, IV v 1 r- 1 p- 1 r- 1 p- 1 r- 2, r 1 - 1 - 1, p 1 - 1 - 1. Epigyne (Figs 1 C –D): median sector elongated and narrower anteriorly; lateral sectors large, not covered by median sector; depression anterior of copulatory opening elongated; short copulatory duct; anterior area of spermathecae curved; posterior area of spermathecae long; fertilization ducts pointed anteriorly.

Distribution. Known only from Jamaica ( Fig. 4View FIGURE 4).

MCZ

Museum of Comparative Zoology

Kingdom

Animalia

Phylum

Arthropoda

Class

Arachnida

Order

Araneae

Family

Ctenidae

Genus

Acanthoctenus

Loc

Acanthoctenus remotus Chickering, 1960

Polotow, Daniele & Brescovit, Antonio D. 2012
2012
Loc

Acanthoctenus remotus

Chickering 1960: 81
1960