Katissa kurusiki, Nadine Duperre & Elicio Tapia, 2016

Nadine Duperre & Elicio Tapia, 2016, Overview of the Anyphaenids (Araneae, Anyphaeninae, Anyphaenidae) spider fauna from the Chocó forest of Ecuador, with the description of thirteen new species, European Journal of Taxonomy 255, pp. 1-50 : 6-9

Katissa kurusiki sp. nov.

urn:lsid:zoobank.org:act:1997B8DA-325A-42F4-B1F5-AF30568A11D2

Figs 1–6

Diagnosis

Males are easily distinguished from all other congeneric species by the elongated, sinuous projection of the abdomen, resembling a caterpillar ( Fig. 1 ). Females are distinguished by their wing-shaped epigynal Fap (Fig. 5) and convoluted copulatory ducts, with three loops ( Fig. 6 ).

Etymology

The speciFc name is a noun in apposition taken from the Kichwa language, the combination of the words ‘kuru’ and ‘siki’ meaning worm-bottom.

Type material examined

Holotype

ECUADOR: ♂, Cotopaxi Province, Otonga Biological Reserve , sifting moss, 8–21 Jun. 2014, 1717 m, E. Tapia, C. Tapia and N. Dupérré leg. ( QCAZ) .

Other material examined

ECUADOR: Cotopaxi Province, Otonga Biological Reserve : 2 ♀♀, sifting moss, 00.41941º S, 78.99607º W, 1717 m, 24–30 May 2014, E. Tapia, C. Tapia and N. Dupérré leg. ( DTC) ; 1 ♂, sifting moss near Rio Esmeraldas , 24 May–8 Jun. 2014, E. Tapia, C. Tapia and N. Dupérré leg. ( DTC) ; 1 ♂, 4 ♀♀, sifting moss, 8–21 Jun. 2014, 1717 m, E. Tapia, C. Tapia and N. Dupérré leg. ( DTC) ; 2 ♂♂, 3 ♀♀, sifting moss, 2225 m, E. Tapia, C. Tapia and N. Dupérré leg. ( AMNH) ; 1 ♀, sifting litter, 4–7 Sep. 2014, E. Tapia, C. Tapia and N. Dupérré leg. ( DTC) ; 1 ♂, sifting moss, -00.42261º S, -79.5107º W, 2225 m, 21 Jun. 2014, E. Tapia, C. Tapia and N. Dupérré leg. ( DTC) .

Description

Male (holotype)

MEASUREMENTS. Total length: 5.6; carapace length: 2.1 carapace width: 1.6.

CEPHALOTHORAX. Pars cephalica dark brown with black mesh pattern; pars thoracica with wide dark bands dorsally, apically and laterally light brown; margin dark brown (Fig. 1). Sternum, endites and labium light brown.

CHELICERAE. Brown, excavated with antero-prolateral keel; promargin with 3, retromargin with 5 teeth.

LEGS. Femora I, II light yellow with light brown band apically and dark spots at macrosetae base; femora III, IV light brown with medial and apical dark bands and dark spots at base of macrosetae. Tibiae I, II light yellow with dark bands basally and medially; tibiae II–IV light yellow with dark bands basally and apically. Metatarsi I, II brown; metatarsi III, IV yellow with dark apical band. Tarsi I–IV brown. Claws unipectinate, I, II with 6–7 teeth and III–IV with 4–5 teeth. Total length: I: 9.7; II: 7.7; III: 5.8; IV: 7.8; leg formula 1423; leg articles length (femur/patella/tibia/metatarsus/tarsus): leg I 2.5/0.8/2.7/2.6/1.1; leg II 2.0/0.7/1.9/2.2/0.9; leg III 1.6/0.6/1.3/1.7/0.6; leg IV 2.1/0.7/1.8/2.4/0.8.

LEGS SPINATION. Femur I p1-1-1, r1-1-1; tibia I v2-1 -2, p0-1-1, r1-1-1; metatarsus I v2-2 -0, p0-1-0, r1-1- 1. Femur II p1-1-1, r1-1-1; tibia II v2-2 -0, p0-1-1, r0-1-1; metatarsus II v2-2 -0, p0-1-0, r1-1-1. Femur III p0-1-1, r0-1-1; tibia III d1-1-0, v2-2 -2, p1-1-0, r1-1-0; metatarsus III d0-1-1, v2-2 -1. Femur IV p0-1-1, r0-0-1; tibia IV d1-1-0, v2-2 -2, p1-1-0, r1-1-0; metatarsus IV d0-1-0, v2-2 -0.

ABDOMEN. Elongated oval with whitish caterpillar-like extension of various size ( Fig. 1 ). Dorsally light brown, with dark brown pattern composed of spots and two large pyramidal medial dark marks ( Fig. 1 ). Covered with long, dark erected setae and short, none erected light coloured setae. Ventrally, light brown. Spinnerets positioned at the junction between the oval abdomen and the caterpillar-like extension.

GENITALIA. Palpal tibia shorter than cymbium; retrolateral tibial apophysis wide and curved with rounded tips ( Fig. 3 ). Subtegulum rounded apically without keel; tegulum rounded basally; ventral tegular process rounded apically not reaching median apophysis tip; median apophysis elongated, hook-shaped; embolic base protruding prolaterally; embolus ribbon-like, long with distal pale portion ( Fig. 2 ).

Female

MEASUREMENTS. Total length: 4.2; carapace length: 1.7; carapace width: 1.3.

CEPHALOTHORAX. As in male.

CHELICERAE. Brown, not excavated without keel; cheliceral teeth as in male.

LEGS. Colouration as in male. Claws as in male. Palpal claws with 5 teeth. Total length: I: 6.3; II: 5.1; III: 4.1; IV: 5.6; leg formula 1423; leg articles length (femur/patella/tibia/metatarsus/tarsus): leg I 1.6/0.6/1.5/1.4/1.2; leg II 1.4/0.6/1.3/1.1/0.7; leg III 1.2/0.5/0.8/1.1/0.5; leg IV 1.6/0.6/1.3/1.4/0.7.

LEGS SPINATION. Femur I p0-1-1; tibia I v2-2 -0, p0-0-1; metatarsus I v2-2 -0, p0-1-0. Femur II p0-1-1; tibia II v2-2 -0, p0-1-1, r0-1-0; metatarsus II v2-2 -0, p0-1-0. Femur III p0-0-1-, r0-1-1; tibia III d0-1-0, v1-2 -2, p0-1-1, r0-1-1; metatarsus III d0-1-0, v2-2 -1. Femur IV p0-0-1, r0-0-1; tibia IV d0-0-1, v1-2 -2, p0-1-1, r0-1-1; metatarsus IV d0-1-0, v2-2 -1.

ABDOMEN. Oval. Dorsally brownish, with pattern composed of dark pyramidal marks medially and chevrons basally ( Fig. 4 ). Covered with long, dark erected setae and short, none erected light coloured setae.

GENITALIA. Epigynum with wing-shaped epigynal Fap; lateral epigynal grooves curved (Fig. 5). Internal genitalia; copulatory ducts elongated with three loops; seminal receptacles positioned at the beginning of copulatory ducts course; spermathecae oval; fertilization ducts short ( Fig. 6 ).

Natural history

Except for one female, all specimens were collected by sifting moss hanging from trees.

Distribution

Ecuador: known only from the type locality.

Figures

Fig. 1. Katissa kurusiki sp. nov. ♂, habitus, dorsal view. Scale bar: 1 mm.

Figs 2–6. Katissa kurusiki sp. nov. 2. ♂, palp, ventral view. 3. ♂, palp, retrolateral view. 4. ♀, abdomen,  dorsal view. 5. ♀, epigynum, ventral view. 6. ♀, internal genitalia, dorsal view. Scale bars: 2–3, 5–6 =  0.1 mm; 4 = 1 mm.