Cyrioctea cruz Platnick, 1986

Grismado, Cristian J. & Pizarro-Araya, Jaime, 2016, The spider genus Cyrioctea Simon on Chañaral Island (Pingüino de Humboldt National Reserve, Atacama, Chile): description of a new species, and the male of Cyrioctea cruz Platnick (Araneae, Zodariidae), Zootaxa 4107 (2), pp. 267-276 : 270-274

Cyrioctea cruz Platnick, 1986

( Figs. 4 , 5 d, 7)

Cyrioctea cruz Platnick, 1986: 6 , fig. 12–13.

Type locality. CHILE: Coquimbo Region (IV), Elqui Province, coastal sand dune at an elevation of 5 m on a beach south of Cruz Grande.

Diagnosis. Among the American species of Cyrioctea , males of C. cruz are similar to those of C. calderoni in that they have the retrolateral tibial apophysis simple and distally displaced ( Figs. 4 g, 7c); the RTA of C. spinifera is bifid, and in C. aschaensis is proximally displaced; see Platnick 1986 (Figs. 8, 9, 16, 17, 20, and 21). The central apophysis is massive, as in C. spinifera , but differs from the latter (and also from C. calderoni ) in that the median apophysis is simply hook-shaped, without additional tip. Additional differences from C. calderoni are the longer, distally pointed and flattened RTA, the widened conductor, and the lack of the basal spine of the palpal tibia. For the female, see Platnick (1986).

Male description (LEULS, Figs. 4 , 7 ). Total length 4.80. Carapace 2.70 long, 1.80 wide. Femur II 1.70 long. Eye sizes and interdistances: AME 0.078, ALE 0.10, PME 0.061, PLE 0.10; AME-AME 0.084, AME-ALE 0.022, PME-PME 0.079, PME-PLE 0.097, ALE-PLE 0.058. MOQ length 0.29, front width 0.22, back width 0.21. Carapace and chelicerae brown, legs brown slightly lighter; sternum labium, endites and ventral surfaces of coxae pale brown. Abdomen: dorsum with median grey stripe on the cardiac area connecting anteriorly with other lateral longitudinal bands of the same color, determining two arrow shaped paraxial whitish areas with a few irregular, small grey spots ( Fig. 4 a); sides with a more or less irregular grey band; ventrally, a nearly triangular mark spot flanked with two oblique whitish bands converging in front of the spinnerets, which are surrounded by dark pigment ( Fig. 4 c). Palp: Retrolateral tibial apophysis flattened, embolus relatively short, with its base touching the massive central apophysis; median apophysis simply hooked, conductor distally expanded, weakly sclerotized. Leg spination: femora: I d1-1 (very thin); II d1-1(very thin); III d0-1-1-0-1ap, dr0-1-1, dp0-1-1; IV d0-1-1-0-1, dr0-1-1; patellae: III d1-0-1, r1-1-1-1, p1-1-1; IV d1-1-0-1, r1, p1-1; tibiae: I vp1-0-0-1ap; II p1-0, vp1-1-1ap, vr1ap; III d 41-2-1, r0-1-1, p1-1-1, vp1-1-1; IV d1-1-1, r0-1-1, v2-1 r-2ap, p1-1-1; metatarsi: I v2-2 -2, II p1-1-0, v2-2 -2ap; III d2-2-2, p1-1-1ap, r1ap, v1-1 -2ap; IV dr1-0-1ap,, dp1-1-1ap, r1-1-1ap, v2-1 r-2ap, p1-1-1-1.

Material examined. CHILE. Atacama: Huasco Province: Pingüino de Humboldt National Reserve: Isla Chañaral: 29º02'23.1''S, 71º34'45.8''W, 95 m; pitfall traps, (code P1R1) 15-18/11/2012, J. Pizarro-Araya, F. M. Alfaro, M. Cortés, P. Vargas & C. Rivera coll., 1 female ( MHNS); same locality, 24-27/01/203, (preparation codes CJG 1487, 1506, 1507), J. Pizarro-Araya, F. M. Alfaro, M. Cortés, A. Ojanguren & C. Rivera coll., 8 males, 1 female ( LEULS); same data (code P1R2), 3 males, 1 female (MACN-Ar 35651); same locality 29º01'32.3''S, 71º34'20.0''W, 71 m; pitfall traps, (code P3R2), 15–18/11/2012, J. Pizarro-Araya, F. M. Alfaro, M. Cortés, P. Vargas & C. Rivera coll., 2 female (MACN-Ar 35650); same locality, date and collectors, 29º02'28.4''S, 71º34'42.3''W, 104 m, hand collecting, 1 female ( MHNS).

Figures

FIGURE 4. Cyrioctea cruz Platnick. Male (LEULS). a, habitus dorsal view; b, same, lateral view; c, same, ventral view; d, cephalothorax, ventral view; e – g, left palp, e, prolateral view; f, ventral view; g, retrolateral view.

FIGURE 5. Cyrioctea spp. female leg morphology. a, b, C. islachanaral sp. nov. a, g – h, code CJG 1485 (LEULS), b, code CJG 1486 (LEULS); c, C. hirsuta Platnick & Griffin, holotype (photo: Tharina Bird); d, C. cruz Platnick code CJG 1487 (LEULS), e, C. spinifera (Nicolet) (MACN-Ar 36064), f, C. aschaensis Schiapelli & Gerschman (MACN-Ar 17613); a – f, right leg III, prolateral view; g, tarsus I; h, same, detail of the tip, showing the short claws with only three basal teeth.

FIGURE 7. Cyrioctea cruz Platnick (male, LEULS), left palp. a, prolateral view; b, ventral view; c, retrolateral view. C = conductor, CA = central apophysis, E = embolus, MA = median apophysis, ST = subtegulum, T = tegulum. Scale bars = 0.2 mm.