Corythalia placata (♂,♀) (PECKHAM & PECKHAM, 1901)

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

MALE

Body: MarkingsOpistosoma with dark or bright spots . basic colouring dark. Carapace: ColourationLaterally without light bands. Chelicera: Base furrow teeth number promarginal2 teeth. Eyes: AERdorsal edge recurve. Labium: Lengthlonger than wide. Palp: GnathocoxaCorner present. 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 medium-sized in length. 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 - sizeshort (between 0.5x and 0.8x the width of sperm duct). Tibia - ventral bump - characteristicsinconspicuous. Cymbium: Presence of prominent ridges or extensions ventrally absent. Tegulum: Widthtegulum narrower than cymbium. Shape of proximal halfproximal tegulum lobe present. 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 retrolateral half of tegulum or slightly more. occupying clearly more than retrolateral half and at most 3/4. Sperm duct - shapedouble-stacked S-shaped, with proximal and distal loop equal in size. Embolus: Base positionin prolateral half (or, depending on the size, prolateral 2/3, 3/4, etc.) of tegulum, but not reaching the prolateral margin; at distal section. Base circle sizesmall (width between 1/3 and 1/2 the width of tegulum). Base - special structuresSpecial structures at/ on embolus base absent (except for indistinct ridges or flat bulges that are often recognisable). Arising point6 o´clock-position. 7 o´clock-position. 8 o´clock-position. Direction of distalmost sectionprolatero-distally (with between 11° and 50° angle from longitudinal axis of cymbium). width relation - at arising point - subdistallyat most 2x broader. width relation - subdistally - centrallyfrom > 1/2 to < 3/4 the width of central section. from > 3/4 to < 1x the width of central section. General structurewithout or with 1-3 (at most) longitudinal ridges. medium-sized, between 1/2 and 1x the width of tegulum. with less than 1/2 winding. without distinct embolic lamella over entire embolus length. with apophysis. in ventral view subdistally not narrower or narrower, but not distinctly narrower than proximally (more than 1/7 as broad. narrow (centrally between 1/4 and 1/3 the width of sperm duct). elongated lobe-like. Special structuresickle-shaped. distally pointed. with one apohysis. Legs: Leg formula3-4-1-2. 3-4-2-1. Colourationdark red-brown or brown with few lighter annulations, mainly at proximal articles and tarsi. completely or mainly with dark colour (e.g. dark red-brown) ((hardly with lighter sections, e.g. only tarsi lighter). Opisthosoma: Colourationthree bands; AM broadest; C second broadest, with dark chevron; PM narrowest. three bands; AM broadest; C second broadest (but only slightly narrower than AM), without dark chevron; PM narrowest. Distribution: Geographical DistributionSouth America. North America.

Dimensions

Dimensions Body: Total length4.6 mm. Carapace length2.3 mm. Carapace width1.6 mm. Fovea length0.14 mm. Opisthosoma length1.9 mm. Opisthosoma width1.4 mm. Dimensions Clypeus : Height at AME0.18 mm. Height at ALE0.46 mm. Dimensions Eyes : Ocular area width1.4 mm. AME Ø0.47 mm. ALE Ø0.31 mm. PME Ø0.09 mm. PLE Ø0.24 mm. AME<=>ALE 0.03 mm. AME<=>AME PME<=>PME 1.26 mm. PME<=>PLE 0.19 mm. ALE<=>PLE 0.54 mm. PLE<=>PLE 1.05 mm. Dimensions Palp : total length1.7 mm. Femur length0.6 mm. Patella length0.3 mm. Tibia length0.2 mm. Tarsus length0.6 mm. Dimensions Legs: Femur I1.2 mm. Femur II1.2 mm. Femur III1.5 mm. Femur IV1.4 mm. Patella I0.6 mm. Patella II0.6 mm. Patella III0.7 mm. Patella IV0.6 mm. Tibia I0.8 mm. Tibia II0.8 mm. Tibia III1.1 mm. Tibia IV1.1 mm. Metatarsus I0.7 mm. Metatarsus II0.7 mm. Metatarsus III1.1 mm. Metatarsus IV1.2 mm. Tarsus I 0.4 mm. Tarsus II0.4 mm. Tarsus III0.5 mm. Tarsus IV0.5 mm. Leg I3.7 mm. Leg II3.7 mm. Leg III4.9 mm. Leg IV4.8 mm.

FEMALE

Body: MarkingsOpistosoma with dark or bright spots . basic colouring dark. Carapace: ColourationLaterally with light bands. Chelicera: Base furrow teeth number promarginal2 teeth. Eyes: AERdorsal edge recurve. Labium: Lengthlonger than wide. Palp: GnathocoxaCorner absent. Legs: Leg formula3-4-1-2. Colourationdark red-brown or brown with several lighter annulations, mainly at proximal articles and tarsi, but also at distal sections of tibiae and/or metatarsi. dark red-brown or brown with few lighter annulations, mainly at proximal articles and tarsi. Opisthosoma: Colourationthree bands; AM broadest; C second broadest, with dark chevron; PM narrowest. Epigyne: Field - presenceabsent. Field - widthbroader than long. Window - shape(approximately) round (length / width < 1.1). without transversal division. anterior 1/3 of epigynal window more or less as broad as posterior 1/3. Windows - septum - statecontinuous. medium-sized (> 1/6, < 1/3 the width of epigynal window). broad (> 1/3, < 2/3 the width of epigynal window). separating more than only the posterior sections of epigynal windows. at anteriormost section clearly diverging. Window - posterior margin - distance to EpGF long (> 1/2 the length of epigynal window; < 1). Window - posterior margin - positionnot reaching the epigastric furrow. Window - lateral margin - conditioncontinuous. Window - anterior margin - conditionmargins of both epigynal windows anterio-medially not connected. Window - posterior half - shaperegularly rounded. Copulatory opening - locationlocated in posterior half of epigyne. Vulva: blind sac - lengthblind sac absent. fertilization duct - arising pointmedio-anteriorly. fertilization duct - widthinitial section of fertilisation duct narrow. initial section of fertilisation duct medium-sized (not narrower or at most 3/4 as narrow as connective duct). primary spermatheca - shapetransversal oval. primary spermatheca - size rel.medium-sized (diameter of primary spermatheca more than 1/2 the length of epigynal window, but less than 2/3). primary spermatheca - position(all parts) clearly anterior of secondary spermatheca (in dorsal view with gap between the two). secondary spermatheca - presencepresent. secondary spermatheca - shape(approximately) round. secondary spermatheca - size rel. small (ratio "diameter primary spermatheca / diameter secondary spermatheca" < 2.5 but > 1.5). secondary spermatheca - spanspan over both secondary spermathecae shorter than span over both primary spermathecae. secondary spermatheca - orientationbeing round and thus orientation not recognisable; with spermathecal head orientated laterally). connective duct - initial positionposterio-medially. connective duct - widthnarrow (width of secondary spermatheca / width of connective duct < 4, but > 3). connective duct - final positionposterio-ventrally. connective duct - shapestraight (or at least approximately straight) longitudinally. mainly straight (or at least approximately straight) longitudinally, but at initial half with 180° (re-)curve medially. connective duct - length rel.medium-sized (length of connective duct / width of primary spermatheca > or equal 1.25, but < 1.5). head of spermatheca - shapeflat. round (or at least spherical) (length > or equal 1 x width, but < 1.25x). head of spermatheca - orientationanterio-laterally. Distribution: Geographical DistributionSouth America. North America.

Dimensions

Dimensions Body: Total length4.0 mm. Carapace length1.9 mm. Carapace width1.4 mm. Fovea length0.10 mm - 0.12 mm. Opisthosoma length1.9 mm. Opisthosoma width1.3 mm. Dimensions Clypeus : Height at AME0.14 mm. Height at ALE0.36 mm. Dimensions Eyes : Ocular area width1.3 mm. AME Ø0.39 mm. ALE Ø0.26 mm. PME Ø0.08 mm. PLE Ø0.21 mm. AME<=>ALE 0.04 mm. AME<=>AME PME<=>PME 1.09 mm. PME<=>PLE 0.17 mm. ALE<=>PLE .51 mm. PLE<=>PLE 0.91 mm. Dimensions Palp : total length1.7 mm. Femur length0.6 mm. Patella length0.3 mm. Tibia length0.3 mm. Tarsus length0.5 mm. Dimensions Legs: Femur I0.9 mm. Femur II0.9 mm. Femur III1.3 mm. Femur IV0.2 mm. Patella I0.5 mm. Patella II0.5 mm. Patella III0.5 mm. Patella IV0.5 mm. Tibia I0.6 mm. Tibia II0.6 mm. Tibia III0.9 mm. Tibia IV0.8 mm. Metatarsus I0.5 mm. Metatarsus II0.5 mm. Metatarsus III0.8 mm. Metatarsus IV0.9 mm. Tarsus I 0.3 mm. Tarsus II0.3 mm. Tarsus III0.4 mm. Tarsus IV0.4 mm. Leg I2.8 mm. Leg II2.8 mm. Leg III3.9 mm. Leg IV3.8 mm.