Corythalia grata (♂) (PECKHAM & PECKHAM, 1901)

In addition to the genus diagnosis, the following features characterize the species:


Body: MarkingsOpistosoma with dark or bright spots . basic colouring dark. Eyes: AERdorsal edge recurve. Labium: Lengthlonger than wide. Palp: Tibia - retrolateral tibial apophysis - characteristicsdorsal serration indistinct but present. base of RTA not or not distinctly wider than distal section. RTA in ventral view medium-sized in width (between 3x longer than broad and 4.5x). RTA in retrolateral view more or less parallel with longitudinal axis of palp. RTA in retrolateral view without bent (or just indistinct bent). Tibia - ventral bump - sizeabsent or at least not recognisable as such. Cymbium: Presence of prominent ridges or extensions ventrally absent. Tegulum: Widthtegulum narrower than cymbium. Shape of proximal halfproximal tegulum lobe present. proximal tegulum lobe as such absent. Proximal lobe - positionat retrolateral half of tegulum. Proximal lobe - size rel.medium-sized. Proximal lobe - shaperegularly rounded. Special structureswith (fine) transversal ridge (often at distal half at the area of the border between embolic division and tegulum). Sperm duct - locationoccupying clearly more than retrolateral half and at most 3/4. Sperm duct - shapeshape not recognisable, as only parts of sperm duct visible through tegulum surface. Embolus: Base positionin prolateral half (or, depending on the size, prolateral 2/3, 3/4, etc.) of tegulum, in line with (or even extending) the prolateral margin; at distal section. Base circle sizelarge (width between 2/3 and 3/4 the width of tegulum). Base - special structureswith longitudinal division (ridge) dividing embolus base in a basal and a prolatero-distal part (prolatero-distal part in retrolateral view distinctly protruding from distal part of tegulum). Arising point7 o´clock-position. 8 o´clock-position. 9 o´clock-position. Direction of distalmost sectionprolatero-distally (with between 11° and 50° angle from longitudinal axis of cymbium). width relation - at arising point - subdistallyfrom 4.1x to 7.5x broader. width relation - subdistally - centrallyfrom > 1/4 to < 1/2 the width of central section. General structurewithout or with 1-3 (at most) longitudinal ridges. very long, more than 1.5x the width of tegulum. with distinct embolic lamella (longitudinally associated hyaline membrane (homologous to conductor?), over entire embolus length). without apophysis. in ventral view subdistally not narrower or narrower, but not distinctly narrower than proximally (more than 1/7 as broad. narrow to medium-sized and hose shaped. Special structuresickle-shaped. distally pointed. without apohysis (apophyses). Legs: Leg formula3-4-2-1. Colourationdark red-brown or brown with few lighter annulations, mainly at proximal articles and tarsi. Opisthosoma: Colourationthree bands; AM broadest; AM & C narrower (C < 1/6 OL), without light small stacked chevrons betw. C & PM. Distribution: Geographical DistributionSouth America.


Dimensions Body: Total length4.6 mm - 5.5 mm. Carapace length2.3 mm - 2.7 mm. Carapace width1.7 mm - 2.0 mm. Fovea length0.13 mm - 0.195 mm. Opisthosoma length1.9 mm - 2.4 mm. Opisthosoma width1.5 mm - 1.9 mm. Dimensions Clypeus : Height at AME0.2 mm - 0.3 mm. Height at ALE0.47 mm - 0.57 mm. Dimensions Eyes : Ocular area width1.4 mm - 1.6 mm. AME Ø0.44 mm - 0.51 mm. ALE Ø0.26 mm - 0.29 mm. PME Ø0.065 mm - 0.075 mm. PLE Ø0.24 mm - 0.27 mm. AME<=>ALE 0.06 mm - 0.09 mm. AME<=>AME PME<=>PME 1.24 mm - 1.38 mm. PME<=>PLE 0.24 mm - 0.29 mm. ALE<=>PLE 0.59 mm - 0.66 mm. PLE<=>PLE 1.03 mm - 1.17 mm. Dimensions Palp : total length1.9 mm - 2.7 mm. Femur length0.7 mm - 0.9 mm. Patella length0.3 mm. Tibia length0.2 mm - 0.3 mm. Tarsus length0.7 mm. Dimensions Legs: Femur I1.3 mm - 1.6 mm. Femur II1.4 mm - 1.6 mm. Femur III1.5 mm - 2.0 mm. Femur IV1.5 mm - 1.8 mm. Patella I0.6 mm - 0.9 mm. Patella II0.7 mm - 0.9 mm. Patella III0.7 mm - 0.9 mm. Patella IV0.7 mm - 0.8 mm. Tibia I0.9 mm - 1.1 mm. Tibia II1.0 mm - 1.2 mm. Tibia III1.1 mm - 1.2 mm. Tibia IV1.0 mm - 1.2 mm. Metatarsus I0.7 mm - 0.9 mm. Metatarsus II0.8 mm - 1.1 mm. Metatarsus III1.0 mm - 1.2 mm. Metatarsus IV1.1 mm - 1.3 mm. Tarsus I 0.5 mm - 0.6 mm. Tarsus II0.5 mm - 0.6 mm. Tarsus III0.6 mm - 0.7 mm. Tarsus IV0.7 mm - 0.7 mm. Leg I4.0 mm - 5.1 mm. Leg II4.4 mm - 5.4 mm. Leg III4.9 mm - 6.0 mm. Leg IV4.9 mm - 5.8 mm.