Papuamyr omhifosga, Maddison, Wayne P. & Szűts, Tamas, 2019

Maddison, Wayne P. & Szűts, Tamas, 2019, Myrmarachnine jumping spiders of the new subtribe Levieina from Papua New Guinea (Araneae, Salticidae, Myrmarachnini), ZooKeys 842, pp. 85-112 : 85

Papuamyr omhifosga sp. n. Figs 66-77, 90

Type material.

Holotype: male, specimen UBC–SEM AR00215 in UBC–SEM, with data PAPUA NEW GUINEA: Southern Highlands Province: Putuwé, junction of Lagaip & Uruwabwa Rivers. 5.231 S 142.532 E. 570 m a.s.l. 23-26 July 2008. W Maddison & Luc Fimo Tuki leg. WPM#08-019. Beating. Paratypes: 5 males, 5 females, 2 juveniles, with same data.

Etymology.

A combination of letters derived from the first letters of words in a statement of Herbert Levi’s from approximately 1985. He had forgotten to do some bureaucratic task, and in dismay, he exclaimed "Och, my head is full of spider genitalia!" Truly, it was, and for that knowledge which he conveyed to us, arachnology is forever enriched. The name is particularly apt for this species: its genitalia are distinctive and elegant, the palp having a long transparent RTA and sharply bent embolus, the epigyne an RTA pocket displaced far to the anterior.

Diagnosis.

Distinct for its unusual genitalia and its orange and black bicoloured body. The embolus tip extends onto the retrolateral side of the cymbium before looping back to terminate ventrally, much as seen in many amycoid salticids such as Tartamura ( Bustamante and Ruiz 2017). Most notable, however, is the long RTA whose posterior branch extends almost to the tip of the cymbium (Fig. 67). Accordingly, the RTA pocket of the epigyne is displaced far anteriorly (Fig. 68).

Description.

Male (holotype). Carapace length 1.31; abdomen length 1.24. Carapace (Figs 71-75): Narrow and flat, with a thoracic hump but without a strong constriction (Fig. 72). Carapace glabrous and shiny, without evident microsculpture. Ocular quadrangle less than half the length of the carapace. Clypeus extremely narrow. Chelicera (Fig. 71): Excavated medially, and with an ectal spur on the paturon. Five very small retromarginal teeth. Palp (Figs 66, 67, 70): Bulb round, with embolus with a sharp bend near the terminus (black arrow in Fig. 70), at the point where it passes a previous loop, just before extending to the retrolateral side of the cymbium. Ventral lobe of RTA projects ventrally; dorsal lobe extremely long. Legs with relatively few, short setae. First legs distinctly more robust than others. First tibia with two short anterior ventral macrosetae in the distal third, and two extremely small posterior ventral macrosetae in the proximal two thirds. Colour (Figs 71-75): Orange (vibrant in life, pale in alcohol) except for the dark cephalic region, the black posterior half of the abdomen, and dark lines on legs 3 and 4.

Female (paratype, specimen # PNG2008-2603). Carapace length 1.13; abdomen length 1.46. Carapace (Figs 76, 77): As in male. Chelicera: At least four retromarginal teeth. Legs similar to male except for the smaller first leg. First tibia with ventral macrosetae longer than in male, of normal length. Four macrosetae on first tibia (as in male, from distal to basal one anterior- one pair - one posterior), though five in other specimens (two pairs distally, and one posterior basally). Epigyne (Figs 68, 69): Of typical myrmarachnine form (see description of the tribe), except that RTA pocket is far to the anterior. Colour (Figs 76, 77): As in male.