Attacobius lauricae, Pereira-Filho & Saturnino & Bonaldo, 2018

Pereira-Filho, José Moisés B., Saturnino, Regiane & Bonaldo, Alexandre B., 2018, Five new species and novel descriptions of opposed sexes of four species of the spider genus Attacobius (Araneae: Corinnidae), Zootaxa 4462 (2), pp. 211-228 : 214-215

Attacobius lauricae n. sp.

Figs 3, 4 ; Map 1

Type material. ♂ holotype from Brejinho de Nazaré , 11°00'93.1''S, 48°33'51.1''W, Tocantins, Brazil, 14- 23.II.2003, I. Knysak & R. Martins leg. ( IBSP 91459 ).

Etymology. The specific name is a patronym in honour of the first author’s daughter, Laura Camara Ximenes Pereira, nicknamed Laurica.

Diagnosis. Males of A. lauricae n. sp. are similar to those of A. carimbo n. sp., A. uiriri Bonaldo & Brescovit , A. tucurui Bonaldo & Brescovit and A. verhaaghi Bonaldo & Brescovit by the presence of both prolateral and ventral tegular keels ( Figs 5 , 7 ; Bonaldo & Brescovit 2005: figs 2, 9). They differ from those of A. verhaaghi by not presenting the additional, median lobe on the retrolateral tibial apophysis, and from the other three species by the larger cymbial retro-dorsal process, and by the median extension of the median apophysis that is composed of a single, smooth piece ( Figs 3, 4 ).

Description. Male (holotype, IBSP 91459). Carapace pale yellow, cephalic region slightly darker, anterior median eye area with black spot divided by longitudinal gap; chelicerae pale yellow with orange fangs; endites and labium pale yellow; labium with white apex; endites with conspicuous brown pit on basal inner margin; sternum pale yellow with brown margins; legs pale yellow; abdomen pale grey. Total length 2.87. Carapace 1.27 long, 1.05 wide, 0.53 high. Clypeus 0.09 high. Eye diameters and interdistances: AME 0.10, ALE 0.09, PME 0.08, PLE 0.07; AME-AME 0.06, AME–ALE contiguous, PME–PME 0.11, PME–PLE 0.07, ALE–PLE contiguous. MOQ length: 0.20, front width: 0.23, back width: 0.23. Chelicerae 0.43 long, with 3 promarginal and 2 retromarginal teeth. Sternum 0.74 long, 0.72 wide. Abdomen 1.63 long, 0.96 wide. Leg measurements: I: femur 0.89/ patella 0.35/ tibia 0.76/ metatarsus 0.76/ tarsus 0.57/ total 3.33. II: 0.96/ 0.36/ 0.77/ 0.85/ 0.66/ 3.6. III: 0.94/ 0.39/ 0.70/ 0.89/ 0.65/ 3.57. IV: 1.06/ 0.41/ 0.87/ 1.13/ 0.72/ 4.19. Leg spination: I: femur d1-1-0, p0-0-1, r0, v0; tibia d0, p0, r0, v0; metatarsus d0, p0, r0, v1 p-0-0. II: femur d1-1-0, p0, r0, v0; tibia d0, p0, r0, v0-2-2; metatarsus d0, p0, r0, v2.2.0. III: femur d1-1-0, p0, r0, v0; tibia d0, p0, r0, v0; metatarsus d0, p0, r0, v0. IV: femur d1-1-0, p0, r0-0-1, v0; tibia d0, p0, r0, v0; metatarsus d0, p0, r0, v0. Palp: RTA with two lobes, ventral lobe large; apical spur lamelliform, with broad base arising sub-apically from ventral lobe, dorsal lobe small, finger-shaped, oriented dorso-apically, without sub-apical process, with small retro-basal projection; cymbial prolateral process fused to cymbial transversal process; cymbial transversal process gently curved retro-apically, base wide, without basal prong; cymbial retrolateral tubercle a tubular blunt projection; cymbial retrodorsal process digitiform, distally blunt, not excavated; both prolateral tegular keel and ventral tegular keel present, well separated, prolateral tegular keel larger; tegular retrolateral groove present, slender; distal extension of median apophysis protruded apically, acute; median extension of median apophysis smooth, composed of single piece, proximal extension of median apophysis long, tip blunt ( Figs 3, 4 ).

Female. Unknown.

Distribution. Known only from the type locality (Map 1).

Material examined. Only the type.

Figures

FIGURES 3, 4. Attacobius lauricae n. sp., left male palp: 3. ventral view; 4. retrolateral view. Abbreviations: CPP, Cymbial prolateral process; CRP, cymbial retro-dorsal process; CRT, cymbial retrolateral tubercle; CTP, cymbial transverse process; DL, dorsal lobe of RTA; dMA, distal end of median apophysis; mMA, median extension of median apophysis; pMA proximal end of median apophysis; PTK, prolateral ventral tegular keel; TRG, Tegular Retrolateral Groove; VL, ventral lobe of RTA; VTK, ventral tegular keel.

FIGURES 5, 6. Attacobius carimbo n. sp., left male palp: 5. ventral view; 6. retrolateral view. Abbreviations: AS, apical spur of VL; C, conductor; CRP, cymbial retro-dorsal process; CRT, cymbial retrolateral tubercle; CTP, cymbial transverse process; DL, dorsal lobe of RTA; dMA, distal end of median apophysis; E, embolus; mMA, median extension of median apophysis; pMA proximal end of median apophysis; PTK, prolateral ventral tegular keel; VL, ventral lobe of RTA; VTK, ventral tegular keel.

FIGURES 7, 8. Attacobius verhaaghi Bonaldo & Brescovit, 1998, left male palp: 7. ventral view; 8. retrolateral view. Abbreviations: CRP, cymbial retro-dorsal process; CRT, cymbial retrolateral tubercle; CTP, cymbial transverse process; DL, dorsal lobe of RTA; dMA, distal end of median apophysis; ML, median lobe of RTA; mMA, median extension of median apophysis; pMA proximal end of median apophysis; PTK, prolateral ventral tegular keel; TRG, Tegular Retrolateral Groove; VL, ventral lobe of RTA; VTK, ventral tegular keel.