Architis fritzmuelleri, Santos, 2007

Santos, Adalberto J., 2007, A revision of the Neotropical nursery-web spider genus Architis (Araneae: Pisauridae), Zootaxa 1578 (1), pp. 1-40 : 29-30

publication ID 10.11646/zootaxa.1578.1.1

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scientific name

Architis fritzmuelleri

sp. nov.

Architis fritzmuelleri View in CoL sp. nov.

Figures 15A–D View FIGURES 15 , 17 View FIGURE 17

Type material. Holotype: female, Parque Natural Municipal Nascentes do Ribeirão Garcia , Blumenau, state of Santa Catarina, Brazil, 27º01’S, 49º09’W, 21–28 January 2003, Equipe Biota ( IBSP 62898 View Materials ). GoogleMaps

Additional material examined. BRAZIL: São Paulo: Iporanga ( Parque Estadual Turístico do Alto Ribeira [PETAR]), 24º32’S, 48º41’W, 8–15 November 2001, Equipe Biota, 1♀ ( IBSP 62887 View Materials ) GoogleMaps . Santa Catarina: Blumenau ( Parque Natural Municipal Nascentes do Ribeirão Garcia ), 27º01’S, 49º09’W, 21–28 January 2003, Equipe Biota, 2♀ ( IBSP 62899 View Materials , 62900 View Materials ) GoogleMaps .

Etymology. The specific name honors the German naturalist Fritz Müller (1822–1887), who lived most of his adult life in Blumenau. This homage recognises the importance of his contributions to general evolutionary biology, as well as his efforts in the early dissemination of Darwin’s ideas.

Diagnosis. Architis fritzmuelleri sp. nov. resembles A. colombo sp. nov. in size and general appearance ( Figs 14A–B View FIGURES 14 , 15A–B View FIGURES 15 ) as well as in the structure of genitalia. Both species can be distinguished by the large, diamond-shaped median field of the epigynum ( Fig. 15C View FIGURES 15 ) and the CD which are connected to wide internal copulatory atria ( Fig. 15D View FIGURES 15 ) in A. fritzmuelleri sp. nov.


Male. Unknown.

Female ( based on holotype from Parque Natural Municipal Nascentes do Ribeirão Garcia , Brazil)

Carapace dark brown, with a median and a pair of lateral cream coloured longitudinal bands. Lateral bands gently sinuous ( Fig. 15A View FIGURES 15 ). Tegument pilose, with sparse stout setae and thin, white setae. Anterior eye row procurved, median eyes almost twice as large as lateral eyes. Posterior eyes of similar size, almost twice the diameter of anterior median eyes ( Figs 15A–B View FIGURES 15 ). Clypeus cream-coloured, with a pair of paramedian dark bands. Chelicerae cream-coloured, with a median longitudinal dark band ( Fig. 15B View FIGURES 15 ). Labium dark gray, with cream-coloured anterior and lateral margins. Endites cream-coloured, darker in antero-retrolateral corners. Sternum cream-coloured, with dark gray marginal spots close to the coxae. Pedipalpi cream-coloured, with dark gray basal and apical rings on femur, tibia and tarsus. Legs cream-coloured; femur, tibia and metatarsus with basal, median and apical dark rings. Femora I and II with rings incomplete dorsally and connected ventrally. Opisthosoma dark gray, dorsum with sparse stout setae and irregularly spaced cream-coloured spots ( Fig. 15A View FIGURES 15 ). Venter gray, spinnerets dark gray. Total length 3.3; carapace 1.5 long, 1.4 wide. Tibia I length 1.4, II 1.3, III 1.1, IV 1.3. Opisthosoma 1.8 long, 1.7 wide.

Variation. Females, total length 3.1–3.3, carapace width 0.9–1.5.

Natural history. The type specimens were collected by beating understorey vegetation during the day.

Distribution. Known only from two localities in southern and southeastern Brazil ( Fig. 17 View FIGURE 17 ).













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