Orientattus, Caleb, 2020

Caleb, John T. D., 2020, A new jumping spider genus from South and Southeast Asia (Araneae: Salticidae: Plexippini: Orientattus), Peckhamia 200 (1), pp. 1-5 : 1-2

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.

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

Figures

Figures 1-5. Male specimen of Orientattus aurantius from Sri Lanka. 1, Dorsal view. 2, Ventral view. 3-5, Prolateral, ventral, and retrolateral views of the left pedipalp. Images (1-5) adapted from Kanesharatnam & Benjamin, 2018, used here under a Creative Commons Attribution 3.0 License.

Figures 6-9. Female specimen of Orientattus aurantius from Sri Lanka. 6, Dorsal view. 7, Ventral view. 8, Ventral (exterior) view of epigynum. 9, Dorsal (interior) view of dissected epigyum. Images (6-9) adapted from Kanesharatnam & Benjamin, 2018, used here under a Creative Commons Attribution 3.0 License.