Sumakuru bigal Maddison

Maddison, Wayne P., 2016, Sumakuru, a deeply-diverging new genus of lyssomanine jumping spiders from Ecuador (Araneae: Salticidae), ZooKeys 614, pp. 87-96 : 90

Taxon classification Animalia Araneae Salticidae

Sumakuru bigal Maddison sp. n. Figs 1-11

Type material.

Holotype: male, ECUADOR: Orellana: Río Bigal Reserve, Mirador Trail. S 0.5282 W 77.4195. 950 m elev. 2-4 November 2010. W & D Maddison, M Vega, M Reyes. WPM#10-043. DNA voucher d448. The specimen pertains to the Museum of Zoology, Pontificia Universidad Católica, Quito, Ecuador (QCAZ), but is currently held in the Spencer Entomological Collection at the Beaty Biodiversity Museum, University of British Columbia(UBC-SEM).

Etymology.

Based on the type locality.

Diagnosis.

The distinct arching spiral of the embolus (Fig. 1) is unlike any other known lyssomanine, except perhaps Lyssomanes tarmae Galiano, 1980, whose embolus is thicker. The carapace is relatively narrow, and the dark markings on the tarsi and ends of the tibiae of legs 2 and 3 are distinctive (Fig. 11).

Notes.

The single male was found by beating understory vegetation in a relatively open tropical rainforest along a ridge. It landed injured on the beating sheet, having lost most of its legs. The preserved specimen now has both palpi, but just 3 legs: the second legs on both sides, and the third leg on the right side.

Description.

Male (holotype, DNA voucher d448). Carapace length 1.7; abdomen length 2.8. Chelicera (Fig. 9): modest in size, vertical. Teeth not examined for fear of breaking this singular specimen, but no large or prominent teeth projecting beyond the endites. Palp (Figs 1-6): segments long, such that femur is as long as the carapace. Tip of cymbium elongate, extending well distal to bulb (Fig. 11). The bulb’s basic configuration is much like that of Lyssomanes viridis (Walckenaer, 1837) (Fig. 7). The subtegulum is exposed at the proximal side of the bulb, the tegulum occupies the distal retrolateral part of the bulb, and the embolus is on the prolateral side (Figs 5-6). The embolus is connected to the tegulum by a narrow sclerite and twisted hematodocha (arrow in Fig. 3). A diaphanous conductor is terminal (c in Figs 5-6). A broad blade-shaped apophysis, its apparent homolog interpreted as the median apophysis by Galiano (1962 figs 1-2), arises from the retrolateral side of the tegulum (ma in Figs 5-6). The spermophore begins proximally, in the subtegulum, then moves distally into the tegulum (Figs 5-6) then has a loop extending proximally into the tegulum, before coming into the retrolateral side of the tegulum. From there the duct runs through a narrow bridge of sclerite and hematodocha to cross over the face of the bulb to the prolateral embolus (Figs 5-6). The same configuration of the spermophore is seen in Lyssomanes (Fig. 7). Legs long, typical for lyssomanines. Carapace (Figs 8-10): narrow, with fovea displaced to the posterior. ALE directly above AME (Fig. 9). Color in alcohol (Fig. 11): pale, almost white, except for black eyes and appendages as noted (Fig. 11). Black pigment on the tarsus and distalmost quarter of the tibia of legs 2 and 3. On the palp is some black pigment on the retrolateral edge of the trochanter and femur, and the distal prolateral edge of the femur. Some pale scales clothe the dark ocular region (Figs 8-10).