Sparianthis juazeiro,

Rheims, Cristina A., 2020, Revision of the spider genus Sparianthis Simon, 1880 (Araneae, Sparassidae Sparianthinae), Zootaxa 4890 (2), pp. 151-191: 175-176

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Sparianthis juazeiro

sp. nov.

Sparianthis juazeiro  sp. nov.

Figs 86–92View FIGURES 86–89View FIGURES 90–92, 144View FIGURES 143–144

Type material. Holotype: ♀ from Brazil, Acre, Parque Nacional da Serra do Divisor, Juazeiro [-7.5500, -73.2667], 23 November 1996, R. S. Vieira leg. ( IBSP 8991View Materials).GoogleMaps 

Etymology. The specific name refers to the type locality; noun in apposition.

Diagnosis. Females of S. juazeiro  sp. nov. resemble those of S. beebei  sp. nov. by the epigyne with lateral furrows reaching anterior furrow and lateral lobes smooth ( Figs 14View FIGURES 11–16, 90View FIGURES 90–92). They are distinguished from the latter species by median septum hour glass-shaped, constricted at middle, and internal ducts with first turn mediad (median septum beer glass-shaped, constricted at posterior fourth, and first turn anteriad in S. beebei  sp. nov.) ( Figs 90–92View FIGURES 90–92).

Description. Female (holotype): Prosoma and chelicerae brown; fovea darker brown; eye borders black. Labium and endites pale brown, distally yellowish brown. Sternum yellowish brown with brown margins. Opisthosoma pale brownish gray; dorsally with irregular marks laterally, small irregular marks around cardiac mark, one median chevron and three median triangles down posterior half; ventrally with V-shaped lines of muscle sigilla on anterior half of opisthosoma ( Figs 86–87View FIGURES 86–89). Total length 8.4. Prosoma: 3.9 long, 3.2 wide. Opisthosoma: 4.3 long, 2.6 wide. Eyes: diameters: 0.25, 0.22, 0.15, 0.21; interdistances: 0.23, 0.14, 0.44, 0.27, 0.15, 0.04. Legs (1423): I: 10.9 (3.2, 1.8, 2.7, 2.5, 0.7); II: 10.4 (3.3, 1.7, 2.5, 2.3, 0.6); III: 8.1 (2.4, 1.3, 1.9, 1.9, 0.6); IV: 10.6 (3.1, 1.2, 2.4, 3.0, 0.9). Spination follows the generic pattern. Metatarsus III–IV with ventral distal preening combs. Epigyne: epigynal field squared, as long as wide; anterior furrow straight ( Figs 88View FIGURES 86–89, 90View FIGURES 90–92). Vulva: internal ducts slightly wider than half spermathecae width; glandular projection arising from duct at first turn; spermathecae oval ( Figs 89View FIGURES 86–89, 91–92View FIGURES 90–92).

Male. Unknown.

Distribution. Only known from the type locality in northwestern state of Acre, Brazil ( Fig. 144View FIGURES 143–144).


Departamento de Geologia, Universidad de Chile