Ovia macritchie,

Lu, Tian, Koh, Joseph K. H., Zhang, Zhi-Sheng & Li, Shuqiang, 2018, A new Ovia species (Araneae, Lycosidae) from Singapore, with the transfer of Pardosa alboannulata Yin et al., 1997, Zootaxa 4527 (3), pp. 436-450: 437-445

publication ID

https://doi.org/10.11646/zootaxa.4527.3.12

publication LSID

lsid:zoobank.org:pub:0B2004EE-D554-4A04-B226-3C96D2252B9A

DOI

http://doi.org/10.5281/zenodo.4619234

persistent identifier

http://treatment.plazi.org/id/621C87A0-FFEB-BA0E-FCB5-940CFEBBF94D

treatment provided by

Plazi

scientific name

Ovia macritchie
status

sp. nov.

Ovia macritchie  sp. nov.

Figures 2View FIGURE 2, 5View FIGURE 5, 8View FIGURE 8, 11View FIGURE 11, 13View FIGURE 13 A– B

Type material. Holotype maleGoogleMaps  , Singapore, Central Catchment Nature Reserve   GoogleMaps, 1 o 21'13" N, 103 o 48'29" E, elev. 46 m, 27 August 2015, S.Q. Li & Y.F. Tong leg. (LKCNHM). Paratypes. 3 males and 18 females, with same data as holotype ( LKCNHM)GoogleMaps  .

Additional material examined. SingaporeGoogleMaps  , 1 male and 1 female, Bukit Timah Nature Reserve   GoogleMaps, Jungle Fall Stream, 1 o 21'25" N, 103 o 46'25" E, elev. 118 m, 18 August 2015, S. Q. Li & Y.F. Tong leg. (IZCAS); 1 male, Bukit Timah Nature Reserve , Catchment Path, 1 o 21'12" N, 103 o 46'50" E, elev. 107 m, 20 August 2015, S. Q. Li & Y.F. Tong leg. ( IZCAS)GoogleMaps  ; 1 male and 1 female, Bukit Timah Nature Reserve , 1 o 21'37" N, 103 o 46'30" E, elev. 86 m, 24 August 2015, S. Q. Li & Y.F. Tong leg. ( IZCAS)GoogleMaps  ; 5 females, Central Catchment Nature Reserve , 1 o 21'17" N  ,

103 o 47'50" E, elev. 39 m, 25 August 2015, S. Q. Li & Y.F. Tong leg. ( IZCAS); 1 male and 4 females, Central Catchment Nature Reserve   , 1 o 21'21" N, 103 o 48'3" E, elev. 60 m, 26 August 2015, S. Q. Li & Y.F. Tong leg. ( IZCAS); 1 male and 4 females, Central Catchment Nature Reserve , Treetop WalkGoogleMaps  , 1 o 21'13" N, 103 o 48'29" E, elev. 46 m, 28 August 2015, S. Q. Li & Y.F. Tong leg. ( IZCAS); 5 females, Central Catchment Nature Reserve , near Mandai Agrotechnology ParkGoogleMaps  , 1 o 24'53" N, 103 o 47'56" E, elev. 46 m, 1 September 2015, S. Q. Li & Y.F. Tong leg. ( IZCAS)GoogleMaps  .

Etymology. The specific epithet is a noun in apposition and refers to the type locality, which is commonly known as the “MacRitchie Forest” within the species-rich Central Catchment Nature Reserve in Singapore. The name of this forest is becoming a catch-phrase epitomizing an evolving habit towards constructive engagement, in the spirt of mutual respect, among government agencies, the scientific community and civil society seeking to finetune a balance between safeguarding the shared natural heritage of all Singaporeans and meeting the infrastructure needs in land-scarce Singapore.

Diagnosis. The most diagnostic characteristic of the male Ovia macritchie  sp. nov. is seen in the cymbium, with two irregular rows of bristles dorsally and without an apical claw ( Fig. 2CView FIGURE 2). Palea with a conspicuous projection beyond the bulb. Terminal apophysis twisted basally and dagger-like distally. Tegular lobe triangular, with the tip of the bent, needle-like embolus resting on it ( Fig. 8View FIGURE 8 A–D). Females of Ovia macritchie  sp. nov. can be distinguished from O. procurva  ( Figs 6View FIGURE 6 E–F, 9E–F, 12C–D) by the sharply tapering epigynal hoods, smaller vulval chambers located over copulatory ducts and spermathecae far away from the anterior ends of the epigynal hoods ( Fig. 8E, FView FIGURE 8). Femora I of mature males and females are black, while two longitudinal lateral bands run through the legs from the tibiae to metatarsi ( Fig. 2View FIGURE 2 D–G). The carapace and to a lesser extent the dorsum of opisthosoma of live specimens are covered with setae that reflect a characteristic bluish, metallic sheen ( Fig. 13View FIGURE 13 A–B).

Description. Male. Total length 3.27–3.33. Holotype ( Fig. 2AView FIGURE 2, D–F) total length 3.33. Carapace 2.01 long, 1.36 wide; opisthosoma 1.36 long, 1.00 wide. Carapace dark brown. Eye region black. Flanks of the head region vertical in frontal view. Cervical groove and radial furrows deeply black. Anterior eye row strongly procured. Eye sizes and interdistances: AME 0.09, ALE 0.05, PME 0.29, PLE 0.21; AME–AME 0.07, AME–ALE 0.06, PME– PME 0.28, PME–PLE 0.33. Clypeus height 0.12. Chelicerae dark brown, with three promarginal and retromarginal teeth. Labium grey, as long as wide. Endites yellowish grey, longer than wide. Sternum yellowish dark, with sparse black setae. Femur I black, and other segments of leg I pale yellow. Other legs yellow from femora to metatarsi with two dorsal, longitudinal dark bands. Leg measurements: I 5.67 (1.59, 1.87, 1.25, 0.96); II 5.00 (1.42, 1.59, 1.16, 0.83); III 5.12 (1.41, 1.53, 1.45, 0.73); IV 7.66 (2.12, 2.34, 2.18, 1.02). Leg formula: 4132. Opisthosoma long, oval. Dorsum dark brown, with lanceolate cardiac mark and a clump of white setae near the pedicel. Venter of opisthosoma yellow, with small grey spinnerets posteriorly.

Male pedipalp ( Figs 2CView FIGURE 2, 5View FIGURE 5 A–D, 8A–D, 11A–B): cymbium dorsally with two rows of bristles and blue metallic colour. Apical claw absent. Palea with an anterior projection beyond the pedipalpal bulb. The dagger-shaped terminal apophysis slightly bent basally with a long ridge in the middle. The needle-like embolus originating prolaterally, extending ventro-retrolaterally. The membranous tegular lobe triangular and the tegular depression holding the tip of embolus. The median apophysis transverse, with a ventrally curved spur and a distinct notch distally.

Female. Total length 3.60–4.77. One of female paratypes ( Figs 2B, GView FIGURE 2) total length 3.72. Carapace 2.02 long, 1.45 wide; opisthosoma 1.84 long, 1.2 wide. Eye sizes and interdistances: AME 0.09, ALE 0.06, PME 0.32, PLE 0.27; AME–AME 0.07, AME–ALE 0.06, PME–PME 0.26, PME–PLE 0.31. Clypeus height 0.174. Leg measurements: I 5.42 (1.57, 1.85, 1.26, 0.74); II 5.13 (1.45, 1.72, 1.19, 0.77); III 5.18 (1.44, 1.62, 1.38, 0.74); IV 7.71 (2.03, 2.48, 2.19, 1.01). Leg formula: 4132. The colouration and pattern are similar to those of males.

Epigyne ( Figs 5View FIGURE 5 E–G, 8E–F, 11C–D) with a pair of adjacent and sharply tapering apical hoods. The needle-like median septum extending between hoods but not reaching the posterior transverse part. Spermathecae subglobular with twisted copulatory ducts. Spherical vulval chambers on the copulatory ducts dorsally. Fertilization ducts short.

Variation. In some males and females, all femora are black. Leg I from tibiae to metatarsi of certain males are covered entirely with white setae, while similar segments in other males are brownish with paired longitudinal lines.

Distribution. Among leaf litter in various primary and mature secondary forests in many parts of Singapore ( Fig. 13CView FIGURE 13).

IZCAS

Institute of Zoology, Chinese Academy of Sciences

Kingdom

Animalia

Phylum

Arthropoda

Class

Arachnida

Order

Araneae

Family

Lycosidae

Genus

Ovia