Guadana alpahuayo, Rheims, 2021

Rheims, Cristina A., 2021, The Neotropical genera Guadana Rheims, 2010 and Sparianthina Banks, 1929 (Araneae: Sparassidae: Heteropodinae), Zootaxa 5061 (3), pp. 401-431 : 403-407

publication ID

https://doi.org/10.11646/zootaxa.5061.3.1

publication LSID

lsid:zoobank.org:pub:14E73644-BF88-4999-887D-827553A372E1

DOI

https://doi.org/10.5281/zenodo.5700064

persistent identifier

https://treatment.plazi.org/id/D57D87F8-5742-2E78-FF5B-F9D3A03FFE32

treatment provided by

Plazi

scientific name

Guadana alpahuayo
status

sp. n.

Guadana alpahuayo   sp. n.

Figs 1−14 View FIGURES 1−5 View FIGURES 6−9 View FIGURES 10−14 , 57 View FIGURES 57−66 , 67 View FIGURES 67−76 , 81 View FIGURES 81−82

Type material. Holotype: ♂ from PERU: Loreto: Iquitos, San Juan Bautista, Zungarococha , Arboretum del UNAP (-3.8298, -73.3753), 8−9 April 2013, C.A. Rheims & R. P. Indicatti leg. ( MUSM) GoogleMaps   . Paratypes: 2♂, 2♀, with the same data as holotype ( IBSP 166391 View Materials , 165059 View Materials , MUSM) GoogleMaps   .

Etymology. The specific name refers to the Alpahuayo Mishana National Park, that is adjacent to the type locality; noun in apposition.

Diagnosis. Males of G. alpahuayo   sp. n. resemble those of G. arawak   sp. n. by the palps with embolus bearing a sub-distal keel at tip ( Figs 67−68 View FIGURES 67−76 ) and dRTA barely reaching the proximal margin of the alveolus ( Figs 2 View FIGURES 1−5 , 18 View FIGURES 15−19 ). They are distinguished from the latter species by the basal projection with smooth margins ( Figs 2 View FIGURES 1−5 , 11 View FIGURES 10−14 , 67 View FIGURES 67−76 ) (jagged in the latter species). Females resemble those of G. manauara   by the epigyne with MS bearing pair of epigynal pockets, opening anteriorly and medially connected ( Figs 4 View FIGURES 1−5 , 77 View FIGURES 77−80 ). They are distinguished from the latter species by the MS roughly rectangular, slightly wider anteriorly (much wider posteriorly in G. manauara   ); epigynal pockets roughly two times wider than long (four times wider than long in G. manauara   ) and by the presence of scape-like projection at the posterior margin of the epigynal pockets ( Figs 4 View FIGURES 1−5 , 13 View FIGURES 10−14 ).

Description. Male (holotype): Prosoma pale brownish orange with pale brown margins and irregular pale brown marks between thoracic striae and at base of cephalic region; fovea and thoracic striae pale brown; eye borders black. Chelicerae, legs and palps pale yellowish orange with brownish gray marks at base of setae and spines. Labium brownish orange, distally cream colored. Endites pale yellowish orange. Sternum yellowish with brown margins. Opisthosoma pale yellowish cream colored; dorsally with two pairs of round muscular impressions, the posterior largest; ventrally with two curved lines of muscle impressions. Spinnerets pale yellowish cream colored ( Figs 6−7 View FIGURES 6−9 ). Total length 6.4. Prosoma 3.0 long, 3.4 wide. Opisthosoma: 3.0 long, 2.5 wide. Eyes: diameters: 0.10, 0.20, 0.16, 0.22; interdistances: 0.08, 0.02, 0.24, 0.22, 0.22, 0.20. Legs: I: 24.4 (6.2, 1.7, 7.1, 6.9, 2.5); II: 27.2 (6.8, 1.8, 8.0, 7.8, 2.8); III: 17.2 (4.8, 1.3, 4.8, 4.7, 1.6); IV: 19.5 (5.0, 1.4, 5.0, 6.0, 2.1). Palp: vRTA triangular; dRTA distally bifid, with one branch conical and the other slightly laminar and distally blunt; DTA subdistally curved retrolaterally; conductor hyaline, with the same width throughout its entire length; embolus strongly curved prolaterally, with basal projection with pointed tip ( Figs 1−3 View FIGURES 1−5 , 10−12 View FIGURES 10−14 , 57 View FIGURES 57−66 , 67 View FIGURES 67−76 ).

Female (IBSP 165059): Coloration pattern as in male; prosoma, chelicerae, legs and palps lighter; opisthosoma darker, pale brownish-gray. Total length 7.6. Prosoma: 3.5 long, 3.4 wide. Opisthosoma: 3.9 long, 3.5 wide. Eyes: 0.18, 0.22, 0.18, 0.24; interdistances: 0.14, 0.06, 0.30, 0.28, 0.26, 0.24. Legs: I: 18.3 (5.0, 1.7, 5.5, 4.4, 1.7); II: 20.2 (5.9, 1.8, 6.0, 4.8, 1.7); III: 14.4 (4.4, 1.3, 3.8, 3.7, 1.2); IV: 15.8 (4.6, 1.2, 4.0, 4.3, 1.7). Epigyne: epigynal field wider than long; MS longer than wide ( Figs. 4 View FIGURES 1−5 , 13 View FIGURES 10−14 ). Vulva: internal ducts running postero-mediad from CO, then posteriad towards SP; SP roughly ovoid; FD short, anteriad ( Figs 5 View FIGURES 1−5 , 14 View FIGURES 10−14 ).

Variation. Males (n = 3): total length 5.9−6.4; prosoma 2.9−3.0; femur I 6.2−6.8. Females (n = 2): total length 6.6−7.6; prosoma 3.0−3.5; femur I 4.9−5.0.

Distribution. Only known from the type locality in northeastern Peru ( Fig. 81 View FIGURES 81−82 ).

R

Departamento de Geologia, Universidad de Chile

Kingdom

Animalia

Phylum

Arthropoda

Class

Arachnida

Order

Araneae

Family

Sparassidae

Genus

Guadana