Halodromus deltshevi, Muster, 2009

Muster, Christoph, 2009, The Ebo-like running crab spiders in the Old World (Araneae, Philodromidae), ZooKeys 16 (16), pp. 47-73 : 60-62

Halodromus deltshevi sp. n.

urn:lsid:zoobank.org:act:0D97C753-718E-4BAF-BFA7-818A10F20BB3

Figs 21-24

Etymology. The species name is dedicated to the Bulgarian arachnologist Dr Christo Deltshev on occasion of his 70 th anniversary. Noun in genitive case.

Material examined. Holotype. Male. YEMEN: ‘ Adan: Aden, 12° 48’N, 45° 02’E, 1889, leg. E. Simon, specimen in ethanol with three legs missing, with hand-written labels as follows “19099 Aden!” “ Halodromus deltshevi Muster Holotype ” ( MNHN ES 19099 ) . Paratypes. 5♁, 11♀, same data as holotype (3♁, 4♀ MNHN ES 10779 ; 2♁, 7♀ MNHN ES 19099 ) .

Diagnosis. Males are characterized by the prominent bulge at the base of the patellar apophysis ( Figs 21-22 ), females are unique in the shape of the epigynal grooves ( Fig. 23 ).

Description. Measurements. Male (Holotype): total length 3.25, CL 1.58, CW 1.65, ClyH 0.28, OL 1.9, OW 1.4. Leg I 7.4 [2.1, 0.75, 2.0, 1.6, 0.95], FemII 3.25.

Eye sizes and interdistances: AME 0.12, PME 0.09, AME–AME 0.14, AME–ALE 0.055, PME–PME 0.27, PME–PLE 0.16, ALE–PME 0.14. Pedipalp: PFem 0.66, PPat 0.28, PatApo 0.28 PTib 0.32, CyL 0.66, CyW 0.34. AME size index: 0.073. PME interdistance index: 1.69. Clypeus height index: 0.17. Leg II length index: 1.55.

Female (n = 5): total length 3.2 (2.8-3.5), CL 1.34 (1.25-1.4), CW 1.51 (1.4-1.6), ClyH 0.24 (0.23-0.26), OL 2.08 (1.7-2.2), OW 1.69 (1.4-1.9). Leg I 5.56 (5.4-5.75) [1.69, 0.6, 1.43, 1.13, 0.71], FemII 2.42 (2.3-2.65). Eye sizes and interdistances: AME 0.1, PME 0.07, AME–AME 0.11, AME–ALE 0.06, PME–PME 0.23, PME–PML 0.14, ALE–PME 0.13. AME size index: 0.068 (0.064 -0.076). PME interdistance index: 1.65 (1.35-1.92). Clypeus height index: 0.16 (0.15-0.17). LegII length index: 1.43 (1.35-1.56).

Colour. Dorsal shield of prosoma brown with orange-brown median band that extends to posterior margin, posterior edges with whitish pubescence, allatal stripes discontinuous, metadiscus a central whitish V-sign, mesodiscus with conspicuous pattern (similar to Fig. 16 ). Clypeus brown with whitish patch, chelicerae light brown with black spots. Sternum whitish with dots and brown patches at the margin. Legs yellowish-brown, mottled and with double annulations at femora, single annulations at patel-

lae, threefold annulations at tibiae and weak annulations at metatarsi. Opisthosoma densely covered with whitish pubescence, interspersed with dark setulae. Dorsum grey with lanceolate cardiac mark, two posterior dots are usually fused with the cardiac mark, flanks darkish. Venter whitish with grey patches and sometimes grey median stripe.

Pedipalp ( Figs 21-22 ). Patella with bifid apophysis: a rounded bulge at ventral base and a long (three quarters the length of the tibia), blunt dorsal process. Tibia with short, rectangular processing RTA with rounded tip. Cymbial tip approximately one third of CyL. Cymbium length (CyL) 0.66, width (CyW) 0.34, ratio CyL/cephalothorax width 0.4. Subtegulum visible in ventral view. Anterior border of tegulum indistinct, PTA originating in central position, hooked, tip pointing to RTA. Sperm duct symmetric, opening in 7:30 o’clock position. Conductor largely hidden behind embolus, in ventral view protruding at retrolateral side of embolus. Embolus at transition from basal to distal part with distinctive prolateral bulge that projects above prolateral margin of bulb, embolus tip a thin, slightly curved spur.

Epigyne-vulva ( Figs 23-24 ). Epigyne longer than wide. Median septum narrowed posteriorly, epigynal sutures sigmoid. Epigynal grooves almost as wide as median plate at epigastric furrow. Posterior guide pockets relatively small, anterior guide pockets externally only moderately sclerotized, in dorsal view visible as voluminous pockets. Receptacula bagpipe-shaped, separated from epigastric furrow by approximately their diameter. Glandular heads in inner-distal position, almost touching one another.

Distribution and habitat. Only known from the type locality ( Fig. 37 ), no information on habitat available.

Figures

Figure 37. Distribution of Halodromus species.

Figures 21-24. Halodromus deltshevi sp. n. from Aden. 21-22 Left male palp (21 ventral, 22 retrolate- ral) 23 Epigyne, ventral 24 Vulva, dorsal. Scale line = 0.1 mm.

Figures 7-16. 7, 11 Ebo pepinensis from Utah Lake 8, 12 Titanebo parabolis from Utah 9, 15 Halodromus patellaris, from Monastir 10 Philodromus lepidus from Kebili, Tunisia 13 Halodromus patellidens from Kuwait 14 Halodromus barbarae sp. n. from Cartagena 16 Halodromus gershomi sp. n. from Massawa 7-10 Female clypeus and chelicerae, frontal view 11-16 Female cephalothorax, dorsal view. Scale lines = 0.5 mm.