A new jumping spider genus from South and Southeast Asia (Araneae: Salticidae: Plexippini: Orientattus) Author Caleb, John T. D. text Peckhamia 2020 2020-02-23 200 1 1 5 journal article 10.5281/zenodo.5093418 1944-8120 5093418 3E27B27E-5613-48A4-83BE-07C54D413217 Orientattus , gen. nov. Type species : Schenkelia aurantia Kanesharatnam & Benjamin, 2018 Etymology : Orientattus (Latinized noun, m.) is a combination of Orient (referring to the Oriental region ) and attus (old genus group name applied to jumping spiders). Diagnosis : Orientattus species can be distinguished from other plexippines by the following combination of characters: short curved embolus, rounded bulbus, bifurcated RTA ( Figures 3-5 ; also see Figures 1B, D in Peng & Li, 2003 ), curved ‘C-shaped’ copulatory openings ( Fig 8 ; also see Figure 19 in Żabka, 1990 and Figure 401 in Żabka 1985 ), absence of copulatory ducts, spermathecae double chambered with large anterior and small posterior chamber ( Figure 9 ; also see Figure 4C in Song et al., 1997 , Figure 20 in Żabka, 1990 and Figure 402 in Żabka, 1985 ) and two large lateral pockets on the posterior border of the epigynum ( Figure 8 ; also see Figure 4B in Song et al., 1997 , Figure 19 in Żabka, 1990 and Figure 401 in Żabka, 1985 ). Diagnostic characters for Evarcha , Evawes , Orientattus , Pancorius and Schenkelia are compared in Table 1 . Table 1. Comparison of Orientattus , gen. nov. with related plexippine genera.

genus	Evarcha Simon, 1902	Evawes Proszynski, 2018	Orientattus Caleb, 2020	Pancorius Simon, 1902	Schenkelia Lessert, 1927
type species	♀ Araneus falcatus Clerck ,	♂ Salticus patagiatus O.	♂♀ Schenkelia aurantia	♂ Ergane dentichelis	♂♀ Schenkelia modesta
1757	Pickard-Cambridge, 1872 Kanesharatnam &		( Simon, 1899 )	Lessert, 1927
Benjamin, 2018
embolus	moderately long and wide	long and thin	shortest	long and thin	short and wide
bulbus	ovoid with a posterior	ovoid with a blunt	nearly rounded with a	compact and rounded	ovoid with a developed
lobe	posterior lobe	well-developed posterior	without any lobe	posterior lobe
lobe
RTA	single, long and wide	single	bifurcated	single, long and thin	single, long and thread-like
dorsal process on absent		absent	absent	absent	present
tibia of pedipalp
epigynum	large windows, with a pair large transversely oval		very small windows with a	slit-like copulatory	oval windows, simple
of posterior pockets	windows, with a pair of	C-shaped copulatory	opening, with a pair of	copulatory opening, without
posterior pockets	opening, with a pair of	posterior pockets	posterior posckets
larger posterior pockets
spermathecae	elongated, tubular, multi-	elongated, wide, S-	spherical, double with	internal structure	spherical, single-chambered
chambered	shaped	large anterior and small	unknown for the type
posterior chambers

Distribution : South and Southeast Asia ( China , India , Nepal , Sri Lanka , Vietnam ).