Mystaria irmatrix, Honiball Lewis & Dippenaar-Schoeman, 2014

Honiball Lewis, Allet S. & Dippenaar-Schoeman, Ansie S., 2014, Revision of the spider genus Mystaria Simon, 1895 (Araneae: Thomisidae) and the description of a new genus from the Afrotropical region, Zootaxa 3873 (2), pp. 101-144: 119-120

publication ID

http://dx.doi.org/10.11646/zootaxa.3873.2.1

publication LSID

lsid:zoobank.org:pub:AC318953-2804-4BBB-B885-27A8F1DB1EAB

DOI

http://doi.org/10.5281/zenodo.5123008

persistent identifier

http://treatment.plazi.org/id/03D1BD0C-FFB1-945D-FF34-EE0AE5E5E8E6

treatment provided by

Felipe

scientific name

Mystaria irmatrix
status

sp. n.

Mystaria irmatrix   sp. n.

Figs 14–16 View FIGURES 10–24 , 49–52 View FIGURES 43–56 , 117 View FIGURES 115–118

Type material: Holotype: ♀, MOZAMBIQUE: Maputo City, Marracuene, Marracuene Lodge [25°53'S, 32°30’E], beating shrubs in riverine forest, 1 December 2007, R. Lyle & R. Fourie (NCA 2009/4616a). GoogleMaps  

Paratypes: MOZAMBIQUE: Maputo City   , 4 ♂ (collected with holotype ♀), Marracuene, Marracuene Lodge [25°53'S, 32°30’E], beating shrubs in riverine forest, 1 December 2007, R. Lyle & R. Fourie (NCA 2009/4616b) GoogleMaps   . Gaza Province, 1 ♂, 1 juvenile ♀, Xai-Xai, Montego's Lodge [25°03’S, 33°38’E], beating shrubs on dune forest, 2 December 2007. R. Lyle & R. Fourie (NCA 2009/4614) GoogleMaps   ; 1 ♂, 1 juvenile ♀, Chidenguile, Paraiso de Chidenguele [24°54'S, 34°11'E], beating shrubs in dune forest, 15 December 2007. R. Lyle, R. Fourie & C. Haddad (NCA 2009/ 4615) GoogleMaps   . SOUTH AFRICA: Eastern Cape Province, 1 ♂, East London, Pineapple Research Station [32°59’S, 27°54’E], found on plants, 2 July 1977, A.S. Dippenaar-Schoeman (NCA 88/606) GoogleMaps   ; 1 ♂, same locality GoogleMaps   sweeping grasslands, 7 December 1977, A.S. Dippenaar-Schoeman (NCA 78/29); 1 ♀, Mkhambati Nature Reserve [31°21’S, 29°51’E], collected from butterfly traps in forest, 27 January 2008, M. Hamer (NCA 2009/5037) GoogleMaps   . KwaZulu-Natal Province, 2 ♀, 1 ♂, Mkuze Nature Reserve [27°36’S, 32°00’E], yellow pantraps in Terminalia sericea   woodland tree beating, 21 January–21 March 2005, M. Hamer (NCA 2006/76, 2006/273, 2006/298) GoogleMaps   ; 1 ♀, Empangeni, University of Zululand [28°44’S, 31°53’E], 17 September 1975, P. Reavell (NM 23344); same locality GoogleMaps   , 1 ♀, hanging on a silk thread on Acacia sieberiana   with bee in its fangs, 20 November 1981, P. Reavell (NM 14064); 1 ♀, Tembe Elephant Park [27°01’S, 32°24’E], sand forest beating, 15 March 2003, A.S. Honiball (NCA 2003/ 1462) GoogleMaps   ; 1 ♀, Phinda Game Reserve [27°43’S, 32°03’E], tree beating, 22 March 2004, S. Lovell (NCA 2004/685) GoogleMaps   .

Etymology. Named after the mother of the first author. Noun in apposition.

Diagnosis. Female can be recognised by colour patterns on body ( Fig. 14 View FIGURES 10–24 ), Both sexes with metatarsi and/or tarsi IV dark brown to black ( Figs 15, 16 View FIGURES 10–24 ), other legs yellow-orange. Epigyne with atrium rim very narrow teardrop-shaped; small intromittent orifices open antero-laterally ( Fig. 51 View FIGURES 43–56 ). Male palp RTA with dark, med length, narrow tip ( Fig. 50 View FIGURES 43–56 ); VTA slender, curving at tip ( Fig. 49 View FIGURES 43–56 ).

Description. Female. Size, measurements (n = 6). TL: 3.51 (3.15–4.14); CL: 1.27 (1.06–1.46); CW: 1.16 (1.05–1.34); CI: 1.09 (0.98–1.28); CH: 0.83 (0.87–0.96); CLL: 0.25 (0.19–0.30); MOQ-L: 0.26 (0.25–0.30). Colour. Carapace varies from orange with black line around postero-lateral border ( Fig. 15 View FIGURES 10–24 ), with or without two dark patches over LE region ( Fig. 14 View FIGURES 10–24 ) to blackish-copper specimens, often with orange triangular patch on clypeus, colour and body patterns may vary between individuals; abdomen very pale with dark, longitudinal central band that may expand laterally, or with two darker patches laterally; ventrally pale with pale blue stria. Carapace. Smooth. Sternum. SL: 0.52; SW: 0.56; SI: 0.93. Eye s. Eye measurements: AME–AME: 0.26; ALE–AME: 0.35; AME–AME/AME–ALE: 0.73; PME–PME: 0.42; PLE–PME: 0.32; PME–PME/PME–PLE: 1.30; ALE/AME: 1.38; PLE/PME: 0.78; MOQ-AW/MOQ-PW: 0.61; MOQ-L/MOQ-W: 0.43; Clyp/AME–AME: 0.96. Legs. Covered with fine, inconspicuous setae, spiniform setae present dorsally on femora and tibiae; leg formula: II:I:IV:III; leg measurements: leg I—Fe 0.82, Pat 0.33, Tib 0.66, Mt 0.57, Ta 0.41, total 2.78; II—Fe 0.92, Pat 0.32, Tib 0.72, Mt 0.61, Ta 0.42, total 2.98; III—Fe 0.69, Pat 0.27, Tib 0.42, Mt 0.39, Ta 0.28, total 2.04; IV—Fe 0.78, Pat 0.29, Tib 0.57, Mt 0.49, Ta 0.36, total 2.49. Abdomen. Round; AL: 2.24; AW: 2.16; AI: 1.06. Epigyne. Atrium rim as in ( Fig. 51 View FIGURES 43–56 ); intromittent canals as in ( Fig. 52 View FIGURES 43–56 ).

Male. Size, measurements (n = 3). TL: 2.76 (2.50–3.13); CL: 1.19 (1.12–1.34); CW: 1.06 (0.96–1.20); CI: 1.13 (1.10–1.16); CH: 0.68 (0.62–0.75); CLL: 0.25 (0.22–0.28); MOQ-L: 0.26 (0.20–0.31). Differs from females as follows: Colour. Body dorsally orange to copper-brown or blackish-brown ( Fig. 16 View FIGURES 10–24 ); in light coloured specimens abdomen with central black patterns dorsally, ventrally white with blue striae; in dark coloured specimens abdomen ventrally blue metallic colour, striae decorated with white dots. Carapace. Sharply sloping anteriorly. Sternum. SL: 0.45; SW: 0.48; SI: 0.94. Eyes. Eye measurements: AME–AME: 0.24; ALE–AME: 0.32; AME–AME/AME–ALE: 0.74; PME–PME: 0.37; PLE–PME: 0.29; PME–PME/PME–PLE: 1.30; ALE/AME: 1.36; PLE/PME: 0.77; MOQ-AW/MOQ-PW: 0.63; MOQ-L/MOQ-W: 0.41; Clyp/AME–AME: 1.05. Legs. Fewer spiniform setae on femora and tibiae, leg formula: I:II:IV:III; leg measurements: leg I—Fe 0.93, Pat 0.29, Tib 0.81, Mt 0.62, Ta 0.45, total 3.10; II—Fe 0.94, Pat 0.28, Tib 0.81, Mt 0.56, Ta 0.44, total 3.03; III—Fe 0.62, Pat 0.24, Tib 0.52, Mt 0.35, Ta 0.29, total 2.02; IV—Fe 0.71, Pat 0.21, Tib 0.53, Mt 0.43, Ta 0.32, total 2.21. Abdomen. Round with scutum; AL: 1.56; AW: 1.33; AI: 1.17. Palp. VTA and RTA almost same length; VTA very delicate ( Fig. 50 View FIGURES 43–56 ), embolus long ( Fig. 49 View FIGURES 43–56 ).

Natural history. Sampled from riverine, sand, dune and coastal forest as well as woodlands and grasslands. Samples were found in trees such as Terminalia sericea   and Acacia sieberiana   . Most adults were sampled between September and March, while juveniles were sampled in December. One of the specimens sampled was hanging on its own silk thread from a tree while feeding on a bee (P. Reavell, pers. comm.).

Distribution. Mozambique and eastern parts of South Africa ( Fig. 117 View FIGURES 115–118 ).

Kingdom

Animalia

Phylum

Arthropoda

Class

Arachnida

Order

Araneae

Family

Thomisidae

Genus

Mystaria