Tidarren ephemerum, Knoflach & Harten, 2006
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publication ID |
https://doi.org/ 10.1080/00222930600940993 |
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persistent identifier |
https://treatment.plazi.org/id/DC30557E-B323-A70D-FE56-FD5DFC41FF0A |
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treatment provided by |
Felipe |
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scientific name |
Tidarren ephemerum |
| status |
sp. nov. |
Tidarren ephemerum View in CoL n. sp.
( Figures 239–242 View Figures 239–242 ; Table XXVI)
Type material
Madagascar: 1 „ holotype, CAS, Antsiranana Prov., Nosy Be, Réserve Naturelle Intégrale de Lokobe , 6.3 km 112 ° ESE Hellville, 13 ° 259100S, 48 ° 199520E, 30 m, 19–24 March 2001, rainforest, EC30 beating low vegetation, leg. Fisher, Griswold et al., BLF3426 .
Material examined
Only the type.
Etymology
The species name refers to the ephemeral presence of males in all Tidarren species , since they die with copulation, and also to the possible ephemeral state of this species, as the male may turn out to belong to either T. apartiolum n. sp. or T. horaki n. sp.
Diagnosis
The male is distinguished by the slender, tapering cymbium, which lacks distal lobes ( Figure 239–242 View Figures 239–242 ), but bears apical teeth. Prolateral part of conductor with large sickleshaped process and several conspicuous teeth arranged like a crown ( Figure 240 View Figures 239–242 ). Distal rim of tegulum without process. Female unknown. It cannot be excluded that T. ephemerum is the male of either T. apartiolum or T. horaki .
Measurements (mm)
Total length 1.00, carapace length 0.47, width 0.39, length femur I 0.50, tibia I 0.28. Abdomen 0.79 high, 0.56 long, and 0.54 wide. Ventral side (distance petiolus to spinnerets) 0.43 long. Clypeus 0.19 high. Chelicerae 0.20 long. Sternum 0.25 long and 0.27 wide. Femur of male palp ca 0.2 long. Leg formula 1423, see Table XXVI. Number of dorsal setae on tibiae I–IV 2/2/1/2. Trichobothria in retrodorsal/prodorsal row on tibia 2/1, 2/1, 1/2, 2/2. Metatarsi I–III with one trichobothrium, position on I 0.23, on II 0.30.
Somatic features, colouration
Sternum without tubercle. Abdomen higher than long, ending in tubercle. Carapace pale yellow with dark median band from clypeus to eye region and to centre. Chelicerae light yellow with greyish inner margin. Gnathocoxae and labium pale yellow. Sternum pale yellow, with broad dark wavy margins and some small dark spots. Legs pale yellow with dark patches and annulations, coxae pale yellow. Palp pale yellow. Abdomen whitish to yellow brown with dark markings on anterior half. Aboral area whitish with indistinct white median stripe. Epigaster greyish, book lung covers pale yellow. Venter dark with two paramedian spots between epigastric furrow and spinnerets. Spinnerets pale yellow at base, distally brown.
Male palp ( Figures 239–242 View Figures 239–242 )
Tibia at widest part ca 0.6 width of palpal organ. Distal projection of tibia lobe-like and slender, ca 0.3 width of palpal organ ( Figure 240 View Figures 239–242 ). Palpal organ 0.20 mm wide. Cymbium inconspicuous and less modified than in the other species, apparently without distal lobes, but tapering ( Figure 241 View Figures 239–242 ), with several apical teeth; about 1.3 times longer than wide, projecting slightly beyond bulbus. Distal rim of tegulum without process. Retrolateral, membranous part of conductor 0.08 mm long, its tip pointed and hyaline, with furrow guiding embolus; prolateral, sclerotized part with large sickle-shaped process and several conspicuous teeth arranged like a crown (dorsal view, Figure 240 View Figures 239–242 ) or like a claw (side view, Figure 239 View Figures 239–242 ). Embolar base suboval, 0.06 long and 0.04 mm wide, with two small basal lobes. Distal part of embolus 0.11 mm long.
Distribution
Known only from the type locality in Madagascar .
Tidarren horaki n. sp.
( Figures 184, 185 View Figures 181–186 , 195 View Figures 187–195 , 243–246 View Figures 243–246 ; Table XXVII)
Type material
Madagascar: 1♀ holotype , 3♀ paratypes, NMBS, Toamasina, St. Marie, Ch Vavate Plantage , from plants, 19 September 1999, 17 ° 069210S, 49 ° 499500E, leg. P. Otto. 1♀ paratype, CTh, Ile St. Marie, La Crigue, 11 October 2000, leg. E. Heiss. 1♀ paratype, CAS, Prov. Antsiranana, Tamatave , ca 18 ° 039170S, 49 ° 219430E, 4 August 1992, leg. V. and B. Roth.
Material examined
Only the types.
Etymology
This species is dedicated to our enthusiastic fellow arachnologist Dr Peter Horak (Graz).
Diagnosis
In T. horaki the abdomen is rounded or has an inconspicuous dorsal tubercle ( Figures 184, 185 View Figures 181–186 ). Apart from the epigynal protuberance, the entire epigastric region is strongly projecting, rounded and sclerotized ( Figures 184, 185 View Figures 181–186 , 243–246 View Figures 243–246 ). Male unknown.
Measurements (mm)
[♀, n 55, minimum–maximum (mean).] Total length 2.35–2.90 (2.66), carapace length 0.88–1.05 (0.95), width 0.74–0.92 (0.82), length femur I 1.17–1.40 (1.29), tibia I 0.66– 0.86 (0.75). Abdomen 1.64–2.15 (1.95) high, 1.41–1.88 (1.65) long, and 1.21–1.72 (1.53) wide. Ventral side (distance petiolus to spinnerets) 1.10–1.17 long. Clypeus 0.21 high. Chelicerae 0.41 long. Sternum 0.55–0.59 (0.57) long and 0.33–0.35 (0.34) wide. Labium on average 0.12 long, 0.22 wide. Gnathocoxae 0.34 long, 0.14 wide. Leg formula 1423, see Table XXVII. Number of dorsal setae on tibiae I–IV 2/2/1/2. Trichobothria in retrodorsal/ prodorsal row on tibia of female palp 1/1, of legs I–IV 2/1, 2/1, 2/2, 2/2 (1♀ examined). Metatarsi I–III with one trichobothrium, position on I 0.21, on II 0.29, on III 0.36. Tarsal claws of legs with three to four side teeth, claw of female palp consisting of seven teeth. Tarsal organ on female palp at 0.80, on legs I–IV 0.21, 0.33, 0.28, 0.29.
Somatic features, colouration ( Figures 184, 185 View Figures 181–186 , 195 View Figures 187–195 )
Sternum without posterior tubercle. Abdomen higher than long, more or less rounded, tubercle inconspicuous ( Figures 184, 185 View Figures 181–186 ). Carapace uniformly dark brown. Chelicerae light brown, suffused with greyish longitudinal stripes at margins. Gnathocoxae and labium dark brown, lighter at margins. Sternum uniformly dark. Legs and palps light yellow with large dark patches and annulations. Coxae light yellow, distally with large dark patches or at least darkened. Abdomen dark in most specimens, with several white spots ( Figure 195 View Figures 187–195 ). In one well-nourished female with numerous white and dark spots on light brown background. Dorsum without longitudinal band, but with four white paramedian patches; from posterior one an indistinct white line turns laterally. Aboral area dark (in one female dark and white speckled), with interrupted white median stripe from apex of tubercle to spinnerets. Epigastric region strongly protruding. Epigaster dark to greyish, book lung covers light. Venter dark, with two white paramedian spots. Spinnerets dark brown.
Epigynum, vulva ( Figures 243–246 View Figures 243–246 )
Entire epigastric region swollen, rounded and strongly projecting together with epigynal protuberance, ca 0.3 mm beyond venter ( Figures 184, 185 View Figures 181–186 , 243–246 View Figures 243–246 ), epigynum itself 0.12–0.14 mm long in side view. Protuberance triangular, directed anteriorly, in ventral view ca 0.2 mm long, with gradually tapering outlines; posterior, aboral side clearly delimited from surrounding integument, but surrounding aboral region also sclerotized ( Figure 245 View Figures 243–246 ). Copulatory orifice at anterior border of epigynal protuberance, in ventral view closer to posterior end of receptacula. Copulatory ducts separate, though with common orifice ( Figures 244, 245 View Figures 243–246 ), ca 0.1 mm long; they immediately diverge posteriorly and laterally and enter receptacula at posterior inner side. Receptacula seminis 0.19 mm long and 0.12 mm wide. Epigynal protuberance about as long as receptacula (in ventral view, Figure 244 View Figures 243–246 ).
Distribution
Tidarren horaki was collected from three localities in Madagascar.
No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.
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