Acumontia echinata Pocock, 1903

Mendes, Amanda C. & Kury, Adriano B., 2012, Notes on the systematics of the Triaenonychinae from Madagascar with description of a new species of Acumontia Loman (Opiliones: Laniatores), Zootaxa 3593, pp. 40-58 : 43

Acumontia echinata Pocock, 1903

( Figs. 2 A–B, 13)

Acumontia rostrata (part, ♀ only): Pocock 1902: 407, fig. 82B.

Acumontia echinata Pocock 1903: 441 ; Staręga 1992: 280.

Triacumontia echinata: Roewer 1915: 124 , fig. 33; Roewer 1923: 613; Lawrence 1959: 44.

Type data. 3 holotype, (originally reported as Ƥ syntype of A. rostrata ), ( BMNH, examined), from MADAGASCAR, [FIANARANTSOA], Ambohimitombo.

Notes. Pocock (1902) firstly mistook this species for females of A. rostrata and even illustrated one specimen as a female of that species. Later, Pocock (1903) interpreted the “females” as males and females of an undescribed species, which he then described as A. echinata . Roewer (1915; 1923) simply repeated Pocock’s figures, not having seen any material, and included this species in Triacumontia .

Diagnosis. Differs from A. pococki and A. rostrata by the tubercles of anterior margin of carapace much smaller than cheliceral sockets. Differs from A. hispida , A. horrida , A. nigra , A. roeweri , A. soerenseni , A. spinifrons and A. venator by having the apophysis of ocularium unbranched. Differs from A. cowani by the size of spines of areas II–III comparable to the armature of ocularium (and not much smaller). Differs from A. majori and A. roberti by spines of areas II–III subequal (from area III not much longer and stouter than of area II), and widely separated at the base. Differs from A. armata , A. capitata , A. flavispina , A. hystrix , A. majori , A. remyi , A. succinea sp. nov., A. venator by the presence of two tubercles on dorsum of the trochanter of pedipalps. Differs from A. alluaudi , A. capitata , A. cowani , A. flavispina , A. hispida , A. horrida , A. hystrix , A. longipes , A. milloti , A. remyi and A. succinea sp. nov. by the shape of the two ventro-basal apophyses of the femur of pedipalps blunt instead of spiniform. Differs from A. alluaudi , A. flavispina , A. hispida , A. horrida and A. succinea sp. nov. by having five tarsomeres in tarsus I of male.

Figures

FIGURE 2. Acumontia echinata Pocock, 1903, male syntype (BMNH): A, Basichelicerite, trochanter and femur of pedipalps, carapace and areas I – II; B, habitus, lateral view. Scale bars = 2 mm.