Zodarion agricola Bouseksou & Abrous

Bouseksou, Samira, Abrous-Kherbouche, Ourida, Bosmans, Robert & Beladjal, Lynda, 2021, Description of a new species of the genus Zodarion Walckenaer, 1826 (Araneae Zodariidae) from Algeria, Zootaxa 4915 (4), pp. 594-600: 595-598

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Zodarion agricola Bouseksou & Abrous

new species

Zodarion agricola Bouseksou & Abrous   new species

Figs 1–13 View FIGURE 1–8 View FIGURE 9–12 View FIGURE 13

Type material. Holotype ♂, Algeria, Algiers, Oued Smar (36°42’29”N– 03°09’43”E), 24 m a.s.l, pitfalls in wheat and oilseed rape fields, 21.VII.2008, deposited in MNHN ( AR16053). GoogleMaps  

Paratype ♀: idem, 21.VII.2008, deposited in MNHN ( AR16054)   .

Other paratypes: idem, 2 ♂♂ 1 ♀, 21.VII.2008, deposited in MNHN ( AR16055)   .

Further material examined. Algiers: Oued Smar (36°42’29”N– 03°09’43”E), 25m, pitfalls in wheat and oilseed rape fields, II.2008 – I.2009, S. Bouseksou leg., 31♂♂ 38♀♀ (CSB-001) pitfalls in wheat field, VII.2012, further as preceding 1♂ (CSB-002); GoogleMaps   Birtouta , Tassala El Mardja, Technical Institute of Fruit Arboriculture ( T.I.F.A.) (36°38′07″N- 02°56′49″E), 50 m, pitfalls in Prunus dulcis   orchard, IV.2012, S. Bouseksou leg., 1♂ (CBS-003) GoogleMaps   .

Bejaia: Melbou (36°38’23”N– 05°21’39”E), 300m, pitfalls in Olea europaea   grove, 8.XII.2012 – 8.XI.2014, M. Outemzabet leg., 8♂♂ (COA-025) GoogleMaps   .

Bouira: El Asnam (36°19’16”N– 04°00’50”E), 425m, pitfalls in wheat field, 3.VII.2011 – 8.VI.2013, L. Outemzabet leg., 7♂♂ 1♀ (COA-026). GoogleMaps   Ahl El Ksar (36°13’00”N– 04°07’00”E), 612 m, pitfalls in wheat field, 3.VII.2011 – 8.VI.2013, L. Outemzabet leg., 8♂♂ 1♀ (COA-027). GoogleMaps   Bechloul (36°18’47”N– 04°04’22”E), 425m, pitfalls in Olea europaea   grove, 8.XII.2012 – 8.XI.2014, M. Outemzabet. leg., 148♂♂ 16♀♀ (COA-028). GoogleMaps   Taghzout (36°24’31”N– 03°57’34”E), 577m, pitfalls in Olea europaea   grove, 5.XII.2012 – 8.XI.2014, M. Outemzabet leg., 89♂♂ 13♀♀ (COA-029) GoogleMaps   .

Etymology. The species name is a noun in apposition and refers to agricultural fields where the species was exclusively collected.

Diagnosis. Both sexes of Zodarion agricola   spec. nov. are easily recognized by the prosoma with contrasting coloration: dark cephalic and pale thoracic. Males are further diagnosed by the long retrolateral tibial apophysis with recurved, toothed terminal part, females by the rounded antero-median process of the epigyne. By the elongated tibial apophysis, the shape of the tegular apophysis in the male and the antero-median epigynal pit in the female, the species belongs to the Z. elegans   group defined by Bosmans (1997).

Description. Male holoytype MNHN (AR16053).

Colour ( Figs 1, 6 View FIGURE 1–8 ): Cephalic part of carapace dark chocolate brown, thoracic part yellowish orange. Chelicerae brown, sternum and legs yellowish brown. Abdomen dorsally dark grey, ventrally paler, no line of setae before spinnerets.

Measurements: Total length 2.31 mm; carapace 1.39 mm long, 1.05 mm wide. Clypeus 0.17 high.Anterior eye row slightly procurved, posterior eye row strongly procurved in dorsal view. Eye sizes diameter and interdistances: AME 0.13, ALE 0.08, PME 0.09, PLE 0.09, AME-AME 0.09, AME-ALE 0.05, ALE-ALE 0.33, AME-PME 0.09, PME-PME 0.24, PME-PLE 0.08, PLE-PLE 0.48, ALE-PLE 0.03, MOQ 0.32 long, anterior width 0.41, posterior width 0.40. Legs:

Palp ( Figs 2–5 View FIGURE 1–8 , 9, 10 View FIGURE 9–12 ): Retrolateral tibial apophysis wide, strongly elongate, basal part nearly straight, much longer than wide, distal part recurved dorsally with small ventral and somewhat larger dorsal teeth ( Figs 5 View FIGURE 1–8 , 10 View FIGURE 9–12 ), terminally rounded; cymbium with one terminal and one subterminal spine; median apophysis hook-shaped with subrectangular basal branch, distal branch gradually tapered and strongly pointed; embolus oblique and straight, terminally strongly pointed, accompanied by a shorter and less pointed tooth.

Female paratype. MNHN ( AR16054)   .

Colour: Idem as for the male

Measurements: Total length 3.53 mm; carapace 1.57 mm long, 1.22 mm wide. Clypeus height 0.20. Anterior eye row slightly procurved, posterior eye row strongly procurved in dorsal view. Eye sizes diameter and interdistances: AME 0.15, ALE 0.10, PME 0.10, PLE 0.08, AME-AME 0.09, AME-ALE 0.07, ALE-ALE 0.34, AME-PME 0.09, PME-PME 0.23, PME-PLE 0.08, PLE-PLE 0.52, ALE-PLE 0.04, MOQ 0.31 long, anterior width 0.37, posterior width 0.34. Legs:

Epigyne ( Figs 7 View FIGURE 1–8 , 11 View FIGURE 9–12 ): With postero-median incision, continuing into a large, central groove ending anteriorly into a sclerotized plate covering a pit.

Vulva ( Figs 8 View FIGURE 1–8 , 12 View FIGURE 9–12 ): Antero-median plate covering paired sacs; spermathecae small, widely separated by 4–5 times their diameter, each connected sub-basally to small membranous sac.

Other specimen: Total length, carapace length and width (mean, minimum–maximum) and leg length variation (minimum–maximum) are given for both sexes.

Males: Total length 2.73 (1.96–3.5 mm); carapace 1.33 (1.08–1.69 mm) long, 1.01 (0.74–1.33 mm) wide; legs:

Distribution. Central part of North Algeria, wilayas Algiers, Bouira and Bejaia. The species is present only in some Algerian agro-ecosystems where collections were made at regular intervals ( Fig. 13 View FIGURE 13 ).

Ecology. The species was mainly collected in agricultural habitats such as wheat fields and oilseed rape fields and has no preference for one or the other habitat; it is more abundant at the field edges ( Bouseksou et al., 2015). The species is the dominant Zodarion   in Olea europaea   groves, an old but important Mediterranean ecosystem. Other species sampled were: Z. algiricum (Lucas, 1846)   , Z. kabylianum Denis, 1937   and Z. ludibundum Simon, 1914   .

Males and females were collected from May to October, except for one male collected in March ( Fig. 14 View FIGURE 14 ). There is a peak in June and one in September, suggesting there are two generations per year.


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