Meri formosus ( Banks, 1929 ) Rheims & Jäger, 2022

Rheims, Cristina A. & Jäger, Peter, 2022, Revalidation of the genus Sadala Simon, 1880 with the description of a new genus of Neotropical huntsman spiders (Araneae, Sparassidae), Zootaxa 5135 (1), pp. 1-80 : 43-45

publication ID

https://doi.org/10.11646/zootaxa.5135.1.1

publication LSID

lsid:zoobank.org:pub:0CC0D586-E099-4593-9032-EA1885F00F3B

DOI

https://doi.org/10.5281/zenodo.6820290

persistent identifier

https://treatment.plazi.org/id/039787EF-FF8B-C922-FF32-FF1DFB9CFE6D

treatment provided by

Plazi

scientific name

Meri formosus ( Banks, 1929 )
status

comb. nov.

Meri formosus ( Banks, 1929)   comb. nov.

Figs 150–161 View FIGURES 150–156 View FIGURES 157–161 , 316 View FIGURES 315–318

Olios formosus Banks, 1929: 79   , plate 4, fig. 74 (female holotype from Barro Colorado Island [9.1636, ‑79.8378], Canal Zone, Panama Oeste, Panama, deposited in MCZ 21376 View Materials , examined). Jäger, 2020: 81 (misplaced in Olios   ).

Additional material examined. PANAMA: Colón: 1♀, Frijoles [9.1733, ‑79.7967], 25 January 1958, A.M. Chickering leg. ( MCZ 69147 View Materials ) GoogleMaps   ; Panama Oeste   : 1♀, Canal Zone, Barro Colorado Island [9.1636, ‑79.8378], 3–20 April 1953, A.M. Nadler leg. ( AMNH) GoogleMaps   ; 1♀, same locality as previous specimen, 28 July 1936, A.M. Chickering leg. ( MCZ 69127 View Materials ) GoogleMaps   ; 1♀, same locality as previous specimen, 18 August 1939, A.M. Chickering leg. ( MCZ 69128 View Materials ) GoogleMaps   ; 1♀, same locality as previous specimen, 1–31 August 1950, A.M. Chickering leg. ( MCZ 69130 View Materials ) GoogleMaps   ; 1♀, same locality as previous specimen, 26 June 1929, A.M. Chickering leg. ( MCZ 69132 View Materials ) GoogleMaps   ; 1♀, same locality as previous specimen, 30 June 1936, A.M. Chickering leg. ( MCZ 69140 View Materials ) GoogleMaps   ; 1♀, Forest Preserve [9.1167, ‑79.7167], 28 February 1958, A.M. Chickering leg. ( MCZ 69139 View Materials ) GoogleMaps   ; 1♀, same locality as previous specimen, 25 July 1954, A.M. Chickering leg. ( MCZ 69143 View Materials ) GoogleMaps   ; Veraguas: 1♂, Farfan [7.6899, ‑81.2212], 9 January 1958, A.M. Chickering leg. ( MCZ 99615 View Materials ). COLOMBIA: Antioquia GoogleMaps   : 1♀, Rio Clara [5.5833, ‑75.8667], 27 July 1983, F. Coyle leg. ( AMNH) GoogleMaps   .

Diagnosis. Males of M. formosus   resemble those of M. guri   spec. nov. ( Figs 162–165 View FIGURES 162–165 ) by the palp with RTA with rounded base and abruptly narrowed towards tip in retrolateral view. They are distinguished from the latter species by the tegulum not indented prolaterally and embolus with membranous region short, not surpassing half embolus length ( Figs 151, 153 View FIGURES 150–156 ) (tegulum strongly indented prolaterally and embolus with membranous region long, surpassing half embolus length in M. guri   spec. nov.). Females are distinguished from all congeners by the epigyne with MS roughly trapezoid, slightly longer than wide, with EP rectangular, wider than long, opening slightly anterior to posterior margin of MS ( Fig. 154 View FIGURES 150–156 ) and vulva with GP more than three times longer than wide and SP with constrictions ( Fig. 155 View FIGURES 150–156 ).

Description. Male ( MCZ 99615 View Materials ): Total length 11.0. Prosoma 5.1 long, 4.7 wide. Opisthosoma 5.5 long, 3.2 wide. Eyes: diameters 0.37, 0.32, 0.25, 0.32; interdistances: 0.30, 0.15, 0.45, 0.32, 0.30, 0.22. Legs: I: 27.9 (7.6, 2.9, 7.7, 7.8, 1.9); II: 30.3 (8.3, 2.8, 8.6, 8.5, 2.1); III: 19.6 (6.0, 2.0, 5.1, 5.0, 1.5); IV: 22.7 (6.7, 2.0, 6.0, 6.3, 1.7). Spination follows the generic pattern. Palp: PTA triangular, wider than long; cymbium with small retro proximal projection; subtegulum not visible in ventral view; tegulum slightly protruding over conductor base; conductor, widest at base, distally fanned; embolus with large membranous region bearing long needle-like projections, subdistally curved ( Figs 150–153 View FIGURES 150–156 , 157–159 View FIGURES 157–161 ).

Redescription. Female (AMNH): Total length 13.5. Prosoma 6.0 long, 5.8 wide. Opisthosoma 7.4 long, 4.8 wide. Eyes: diameters: 0.44, 0.38, 0.28, 0.36; interdistances: 0.36, 0.26, 0.68, 0.70, 0.30, 0.30. Legs: I: 24.6 (7.0, 2.7, 6.5, 6.5, 1.9); II: 30.5 (8.4, 3.4, 8.3, 8.2, 2.2); III: 21.6 (6.4, 2.7, 5.5, 5.3, 1.7); IV: 23.9 (7.2, 2.6, 6.0, 6.3, 1.8). Epigyne: EF longer than wide; MAB short, slightly conspicuous; HP rectangular, three times wider than long; LL touching posteriorly ( Figs 154 View FIGURES 150–156 , 160 View FIGURES 157–161 ). Vulva: internal ducts with FW mediad; GP arising from ducts at first turn; SP elongate; FD antero-laterad ( Figs 149–150, 155 View FIGURES 145–149 View FIGURES 150–156 ).

Variation. Females (n = 10): total length 14.0–17.5; prosoma length 5.2–6.7; femur I length 7.1–8.3.

Distribution. Known from central Panama to western Colombia ( Fig. 316 View FIGURES 315–318 )

MCZ

Museum of Comparative Zoology

AMNH

American Museum of Natural History

Kingdom

Animalia

Phylum

Arthropoda

Class

Arachnida

Order

Araneae

Family

Sparassidae

Genus

Meri

Loc

Meri formosus ( Banks, 1929 )

Rheims, Cristina A. & Jäger, Peter 2022
2022
Loc

Olios formosus

Jager, P. 2020: 81
Banks, N. 1929: 79
1929