Geraecormobius reitzi, Vasconcelos, Eduardo G., 2005

Vasconcelos, Eduardo G., 2005, Notes on Geraecormobius clavifemur (Mello­Leitão, 1927) and description of Geraecormobius reitzi n. sp. (Arachnida: Opiliones: Gonyleptidae), Zootaxa 1088, pp. 1-10 : 6-9

Geraecormobius reitzi n. sp.

Figs. 10–19

Holotype: ♂, MNRJ 6949, Ilhota, Parque Botânico Morro do Baú, 26º48'29''S, 48º57'19''W, Santa Catarina state, Brazil. Collected by Bonaldo, A., Kury, A.B. & Pintoda­Rocha, R. in 04.II.1996.

Paratypes: 2 ΨΨ MNRJ 6949, same dates of the holotype; 4 males and 4 females MNRJ 0 6655, collected by Baptista, R. L. C. & Baptista, A. R. P., in 25.I.1990 and 10 ♂♂ and 21 ΨΨ f MZSP 18655, collected by Pinto­da­Rocha, R, Bérnils, R. & Lingnau, R, in 02.IV.1999, Ilhota, Parque Botânico Morro do Baú; 18 ♂♂ and 36 ΨΨ, MNRJ 4827, Rio dos Cedros (Alto Palmeiras), collected by Jim, J. in 19–29.IIV.1966; 4 ♂♂ and 5 ΨΨ, MZSP 18634, São Bento do Sul, collected by Pinto­da­Rocha, R, Bérnils, R. & Lingnau, R, in 03.IV.1999.

Etymology: The name is in honor to the late priest and naturalist Dr. Raulino Reitz (1918–1990), founder of the Parque Botânico do Morro do Baú.

Diagnosis: The new species closely resembles G. clavifemur , from which it is easily separated by the shape of dorsobasal apophysis of the femur IV. In G. clavifemur the dorsobasal apophysis is simple, whereas in the new species it is branched.

Measurements (n=10, ♂♂): Average (± standard deviation). TL: 7.3 (± 0.67); CL: 2.5 (± 0.18); CW: 3.3 (± 0.22); AW: 6.3 (± 0.60); LACx: 1.5 (± 0.22); FL: 5.3 (± 0.28); FW: 0.8 (± 0.13); DBAd: 1.7 (0.34); RLAd: 2.7 (± 0.26).

Description of holotype ♂:

Measurements: TL: 7.4; CL: 2.6; CW: 3.5; AW: 6.5. Pedipalp: Trochanter: 0.6; Femur: 1.7; Patella: 0.9; Tibia: 1.1; Tarsus: 1.1. Leg I: Trochanter: 0.6; Femur: 2.7; Patella: 0.9; Tibia: 2.0; Metatarsus: 3.1; Tarsus: 1.9. Leg II: Trochanter: 0.8; Femur: 5.9; Patella: 1.3; Tibia: 4.3; Metatarsus: 5.7; Tarsus: 4.3. Leg III: Trochanter: 0.9; Femur: 4.3; Patella: 1.3; Tibia: 2.7; Metatarsus: 4.7; Tarsus: 2.1. Leg IV: Trochanter: 1.1; Femur: 5.3; Patella: 1.6; Tibia: 4.1; Metatarsus: 7.3; Tarsus: 2.4.

Tarsal formula: 6(3)/10(3)/7/8.

Carapace: Anterolateral margin with small spines. Frontal hump with 1 pair of spines. Eye mound with two spines. Posterior region of the carapace with 1 pair of tubercles.

Abdominal scutum: Scutum densely granulous. Scutal areas with two tubercles each. Tubercles of the area III stronger than others. Granules of the area III larger around the tubercles. Lateral areas with conspicuous tubercles. Posterior margin with row of conspicuous tubercles. Free tergites unarmed.

Pedipalp: Trochanter with two small ventral tubercles. Femur and patella unarmed. Tibia with three setae (IIi) at ventro­mesal border and three setae (IiI) at ventro­ectal bor­ der. Tarsus with two setae (II) at each ventro­ectal and ventro­mesal borders.

Leg IV: Coxa with fine granulation, with lateral apophysis short, posteriorly projecting, with two branches, the inner shorter. Trochanter with strong prolateral apophysis, and three small retrolateral apophyses. Femur sigmoid with robust dorsobasal apophysis forming two branches, retrolateral apophysis approximately in middle of the femur, with prolateral and retrolateral rows of spines.

Venter: Coxa I with three rows of small tubercles. Anal operculum smooth.

Color (in 70% ethanol): Same as in G. clavifemur .

♂ genitalia: Differ from those of G. clavifemur in having only 1 pair, rather than 2, of short dorsodistal setae on the ventral plate.

Ψ: Very similar to the female of G. clavifemur , but differs in having more robust spines on the free tergites.

Measurements (n=10, ΨΨ): Average (± standard deviation). TL: 7.8 (±0.80); CL: 2.4 (± 0.12); CW: 3.2 (± 0.18); AW: 5.6 (± 0.29).

Geographical distribution: Brazil: Santa Catarina state: Ilhota (Morro do Baú), Rio dos Cedros (Alto Palmeiras), and São Bento do Sul.

Figures

FIGURES 10 – 13. G. reitzi n. sp. (MNRJ 6949). 10. male holotype, dorsal view. 11. male holotype, lateral view. 12. female paratype, dorsal view. 13. pedipalpus of the holotype, dorsal view. Scale bars: 1 mm.

FIGURES 14 – 19. G. reitzi n. sp. (MNRJ 6949) male. 14. leg IV, dorsal view. 15. leg IV, ventral view. 16. dorsobasal apophysis of the femur IV, lateral view. 17. chelicera, dorsal. 18. penis, lateral view. 19. penis, dorsal view. Scale bars 14 – 17: 1 mm; 18 – 19: 0.1 mm.