Anaptomecus longiventris Simon, 1903

Jaeger, Peter, Rheims, Cristina & Labarque, Facundo, 2009, On the huntsman spider genera Sparianthina Banks, 1929 and Anaptomecus Simon, 1903 from South and Central America (Araneae, Sparassidae), ZooKeys 16 (16), pp. 115-147 : 138-141

Anaptomecus longiventris Simon, 1903

Figs 80-99

Anaptomecus longiventris Simon 1903: 28 (description immature; holotype juvenile, Ecuador, Cayambe, MNHN, examined). Petrunkevitch 1911: 444. Roewer 1954: 712. Bonnet 1955: 313. Lapinski et al. 2002: 4. Platnick 2009.

Further material examined. PANAMA. 1 ♁, Chiriquí, Reserva Forestal Fortuna, Quebrada Honda, 1 hectare Pancoding inventory, 8°45’00.3’’N, 82°14’20.7’’W, 1135 m, 7.–12.VI.2007, M. Arnedo, D. Dimitrov, G. Hormiga, F. Labarque and M. Ramírez legs. ( MACN 16833 ) ; 2 ♀♀, same locality, 20.VI.2008, L. Piacentini, L. Benavides and F. Labarque legs. ( MACN 16835 ) ; 1 ♀, 6 immatures, Coclé, P. Nac. G.D. Omar Torrijos Herrera, El Cope, 1 hectare Pancoding inventory, 8°40’5.1” N, 80°35’33.3” W, 760 m, 4.–9.VI.2008, M. Arnedo, L. Benavides, G. Hormiga, F. Labarque, M. Ramírez legs. ( MCNB 2008-0986 ; MACN) ; 1 ♁, 1 immature, P. Nac. Altos de Campana, 1 hectare Pancoding inventory, 8°41’00.4” N, 79°55’47.4” W, 895 m, 14.–19.VI.2007, M. Arnedo, D. Dimitrov, G. Hormiga, F. Labarque, M. Ramírez legs. ( MCNB 2008-0985 ; MACN). Voucher codes SFU2NBD019, preparation codes FML-00593-596, LNP-00236-237 . COSTA RICA. 1 ♀ ( PJ 2852 ), Talamanca, 01.09.1882, Bovallius leg. ( NHRS). 1 juv. ♀ ( PJ 1644 ), Alajuela Province, Cordillera de Tilarán, ca. 45 km NW of San Ramón, road to Reserva Biológica Alberto Manuel Brenes , primary, submontane rainforest, vegetation along the road, 900 m alt., 10.3.2001, W. Lapinski leg. ( SMF). 1 subadult ♀ ( PJ 3122 ), Costa Rica, Heredia Province, La Virgen de Sarapiqní , Reserva Biológica Tirimbina, ca. 160 m ü. NN, under palm leaf (42 x 6 cm) hanging over forest stream, 08.06.2008, 2.00 a.m., W. Lapinski leg. ( SMF) [epigyne and vulva were developed under cuticle]. 1 ♀ ( PJ 3117 ), Costa Rica, Heredia Province, La Virgen de Sarapiqní [Sarapiquí?], Reserva Biológica Tirimbina, ca. 180 m alt., under leaf of Melastomataceae sp., ca. 1.8 m distance from ground, in forest, 07.05.2008, 9: 50 p. m., W. Lapinski leg. ( SMF) .

Diagnosis. Males: embolus arising prolaterally on tegulum with smooth teeth at base and a lamina widest medially at the end; conductor well developed, hammer-shaped; RTA relatively distant from cymbium ( Figs 80-81 , 94-96 ). Females: Copulatory openings situated laterally, appearing as large circles (in some cases filled with [mating] plug); epigynal furrows absent; posterior epigynal margin with inconspicuous lobe(s) ( Fig. 82 ). Fertilisation ducts short, situated in the centre of internal duct system, the latter with two blind ending appendages, one long, pointing in a posterior direction, the other short, pointing in an anterior direction, with glandular pores at its tip ( Figs 83-86 ).

Description. Male (MACN 16833). Total length 8.61. Prosoma: 3.12 long, 2.72 wide. Opisthosoma: 5.49 long, 0.28 wide. Eye diameters and interdistances: AME 0.18, ALE 0.18, PME 0.14, PLE 0.16, AME–AME 0.1, AME–ALE 0.06, PME–PME 0.18, PME–PLE 0.24, AME–PME 0.18, ALE–PLE 0.20. Legs: I: femur 9.05, patella 1.62, tibia 9.45, metatarsus 10.76, tarsus 3, total 33.88; II: 8.89, 1.72, 9.62, 11.08, 3.04, 34.35; III: 5.74, 1.38, 6.14, 6.63, 1.92, 21.81; IV: 7.11, 1.38, 6.71, 8.73, 2.28,

26.21. Leg formula 2143. Spination: femur I–II: p1-1-1; d0-1-0; r1-1-1; femur III: p1-1-1; r0-1-1; femur IV: p0-1-0; r0-0-1; tibia I–II: p1-1-0; d1-1-0; r1-1-0; v2-2-0; tibia III–IV: p1-1-0; d0-1-0; r1-1-0; v2-2-0; metatarsus I–II: p1-0-0; r1-0-0; v2-2-0; metatarsus III: p1-1-0; r1-0-0; v2-2-0; metatarsus IV: p1-1-0; r1-1-0; v2-2-2.

Colouration ( Figs 97-99 ). In live specimens, prosoma pale green with olive green margins and fovea. Chelicerae pale yellow, anterior base pale green. Pedipalps and legs pale yellow with light brown markings at the base of the spines. Sternum, gnathocoxae and labium pale yellow. Opisthosoma pale orange, with two large, yellow dots dorsally and two yellow and white stripes laterally. Colour fading in ethanol, leaving a whitish pale appearance; dorsal prosoma with dark marginal band ( Fig. 98 ).

Female (MACN 16835). Total length 10.11. Prosoma: 3.48 long, 3.04 wide. Opisthosoma: 6.63 long, 1.76 wide. Eye diameters and interdistances: AME 0.12, ALE 0.18, PME 0.14, PLE 0.14, AME–AME 0.14, AME–ALE 0.08, PME–PME 0.20, PME–PLE 0.26, AME–PME 0.24, ALE–PLE 0.24. Legs: I: femur 5.98, patella 1.6, tibia 6.71, metatarsus 6.63, tarsus 1.92, total 22.84; II: 5.82, 1.56, 6.46, 6.3, 1.92, 22.06; III: 4.04, 1.3, 4.2, 4.28, 1.38, 15.20; IV: 4.64, 1.2, 4.36, 4.36, 1.62, 16.18. Leg formula 1243. Spination: femur I–II: p1-1-1; d0-1-0; r1-1-1; femur III: p0-1-0; r0-1-1; femur IV: p0-1-0; tibia I–II, IV: p1-1-0; r1-1-0; v2-2-0; tibia III: p1-1-0; d0-1-0; r1-1-01; v2-2-0; metatarsus I–II: p1-0-0; r1-0-0; v2-2-0; metatarsus III–IV: p1-1-0; r1-0-0; v2-0-0. Chelicerae with 3 anterior and 7 posterior teeth, with ca. 20 denticles in a patch ( Fig. 89 ). Palpal claw with 5-6 teeth ( Fig. 92 ), leg claw with 19-20 teeth ( Fig. 93 ). Median hook of trilobate membrane acuminate and extending beyond lateral projections, may be bent ( Fig. 91 ).

Copulatory organ as in diagnosis. Epigynal field not recognisable. Posterior margin of epigyne with two indistinct lobes.

Colouration as in male, slightly darker.

Variation. Males (n=2): total length 8.61-10.59; prosoma 3.52-3.12; femur I 9.7- 9.05. Females (n=3): total length 10.11-11.74; prosoma 3.48-3.96; femur I 5.98-6.78. Median sac-like parts of the internal duct system may be considerably smaller and not touching each other.

Natural history. One female collected with a spherical egg sac, containing 76 spiderlings. In Costa Rica all specimens were observed on leaves of shrubs and lower tree branches.

Distribution. Ecuador, Eastern Panama and Costa Rica.

Figures

Figures 80-93. Anaptomecus longiventris Simon, 1903 (80-81 ♁ from Panama 82-93 ♀ from Costa Rica, NHRS PJ 2852). 80-81 Left ♁ palp (80 ventral 81 retrolateral) 82 Epigyne, ventral 83, 85 Internal duct system, dorsal (85 detail, left half) 84, 86 Schematic course of internal duct system, dorsal 87 Prosoma, lateral 88 Eyes, dorsal 89 Chelicerae, ventral 90 Labium and gnathocoxae, ventral 91 Trilobate membrane, distal metatarsus, dorsal 92 Left palpal claw, prolateral 93 Prolateral claw of left leg I, prolateral. C – conductor; CD – copulatory duct; E – embolus; FD – fertilisation duct; GP – glandular pores; T – tegulum.

Figures 94-99. Anaptomecus longiventris Simon, 1903, ♁ from Panama. 94-96 Left ♁ palp (94 prolateral 95 ventral 96 retrolateral) 97-99 Habitus (97 lateral 98 dorsal 99 ventral).