Ibotyporanga kiriri Huber, 2024

Huber, Bernhard A., Meng, Guanliang, Král, Jiří, Ávila Herrera, Ivalú M. & Carvalho, Leonardo S., 2024, Diamonds in the rough: Ibotyporanga (Araneae, Pholcidae) spiders in semi-arid Neotropical environments, European Journal of Taxonomy 963, pp. 1-169 : 132-137

Ibotyporanga kiriri Huber sp. nov.

urn:lsid:zoobank.org:act:7CCAD29A-4A21-46C0-9312-F6324D66B228

Figs 23E , 73F , 96 , 113–116

Diagnosis

Distinguished from similar congeners (with split procursus with long dorsal branch; long male palpal patella, i.e., dorsally>1.8 × as long as medially wide; wide epigynum, i.e.,>1.9 × as wide as long; distinct epigynal pocket, i.e., narrow and relatively deep; and sclerite in female internal genitalia) by combination of: procursus main and dorsal branches proximally not overlapping, i.e., with space between them in lateral view ( Fig. 114C ); male palpal tarsus with small dorsal hump (arrow in Fig. 114C ); and median sclerite in female internal genitalia without posterior constriction ( Figs 115C , 116B–C ); from I. itajubaquara sp. nov. also by cheliceral apophysis ( Fig. 115B ; more pointing downwards and with stronger tip); from I. ouro sp. nov. also by smaller distance between dorsal and main branches of procursus (compare Figs 114C and 118C ); from I. canudos sp. nov. also by simple evenly curved tip of dorsal branch of procursus (compare Figs 114C and 126C ). Females of I. kiriri sp. nov. may be indistinguishable morphologically from females of I. itajubaquara , I. ouro , and I. canudos sp. nov.

Etymology

The species name honors the Kiriri, an indigenous people of Eastern Brazil; noun in apposition.

Type material

Holotype

BRAZIL – Bahia • ♂; SE of Paramirim; 13.550° S, 42.202° W; 590–640 m a.s.l.; 18 Nov. 2022; B.A. Huber and L.S. Carvalho leg.; CHNUFPI 5963 .

Paratypes

BRAZIL – Bahia • 5 ♀♀; same collection data as for holotype; CHNUFPI 5964 • 1 ♂, 1 ♀; same collection data as for holotype; UFMG 31660 • 1 ♂, 1 ♀; same collection data as for holotype; CHNUFPI 9049 [deposited in ZFMK Ar 24380] • 1 ♂; same collection data as for holotype; CHNUFPI 5965 .

Other material examined

BRAZIL – Bahia • 4 ♀♀, 1 juv., in pure ethanol; same collection data as for holotype; CHNUFPI 5966 [deposited in ZFMK Br22-195] • 6 ♀♀; NE of Brumado; 14.1601° S, 41.5154° W; 470 m a.s.l.; 11 Nov. 2022; B.A. Huber and L.S. Carvalho leg.; CHNUFPI 5967 • 1 ♂, 1 ♀; same collection data as for preceding; CHNUFPI 9050 [deposited in ZFMK Ar 24381] • 4 ♀♀, in pure ethanol; same collection data as for preceding; CHNUFPI 5968 [deposited in ZFMK Br22-154] .

Assigned tentatively (see Variation below)

BRAZIL – Bahia • 1 ♂; Abaira, Cachoeira da Samambaia , Rio Catolés ; 13.3060° S, 41.8544° W; 1160 m a.s.l.; 4 Nov. 2013; L.S. Carvalho and M.B. da Silva leg.; CHNUFPI 3965 .

Description

Male (holotype)

MEASUREMENTS. Total body length 1.9, carapace width 0.77. Distance PME–PME 50 µm; diameter PME 70 µm; distance PME–ALE 25 µm; distance AME–AME 15 µm; diameter AME 45 µm. Leg 1: 4.19 (1.13+0.25 +1.07 +1.27 + 0.47), tibia 2: 0.88, tibia 3: 0.83, tibia 4: 1.27; tibia 1 L/d: 10; diameters of leg femora 0.18–0.19; of leg tibiae 0.10–0.11.

COLOUR (in ethanol). Prosoma and legs ochre-yellow, carapace medially with Y-shaped line but without darker band; legs with darker rings subdistally on femora and tibiae; abdomen gray with many darker internal marks; ventrally with light ochre plates in front of gonopore and in front of spinnerets.

BODY. Habitus as in Fig. 73F . Ocular area slightly raised. Carapace with distinct but shallow thoracic groove. Clypeus with sclerotized rim with median notch. Sternum wider than long (0.56/0.46), with very low and indistinct anterior processes near coxae 1 not different from those in female. Abdomen globular.

CHELICERAE. As in Fig. 115A–B ; width 0.29; with short median frontal apophysis; stridulatory files very fine and poorly visible in dissecting microscope.

PALPS. As in Fig. 113 ; coxa unmodified; trochanter with short rounded ventral process; femur proximally with distinct retrolateral process directed toward distal, with prolateral stridulatory pick, distally widened but unmodified; femur-patella joints not shifted toward one side; patella dorsally ~1.85 × as long as medially wide; tibia with two trichobothria in relatively proximal position; tibia-tarsus joints slightly shifted toward retrolateral side; tarsus with small dorsal hump; procursus ( Fig. 114A–C ) split into long dorsal and main (ventral) branches; dorsal branch narrow in lateral view, wider in dorsal view, distally only slightly curved towards prolateral; main branch with light prolateral band, wider in lateral view than in dorsal view, with small subdistal side-branch, distally transparent and curved backwards; genital bulb ( Fig. 114D–F ) with prolateral sclerite on bulbous part, embolus tip simple, without distinctive sclerotized elements.

LEGS. Without spines but with longer hairs ventrally on femora; without curved hairs; with short vertical hairs on tibiae 1 and 2; retrolateral trichobothrium of tibia 1 at 60%; prolateral trichobothrium absent on tibia 1; tarsus 1 with ~3–4 pseudosegments, only distally distinct.

Variation (male)

Tibia 1 in five males (incl. holotype): 1.00–1.07 (mean 1.04). The single male from near Catolés has essentially identical palps (both shape and size) but the cheliceral apophysis is slenderer in lateral view (maximum height ~80 µm versus>100 µm in other males). It is therefore assigned tentatively; the first legs of this male are missing.

Female

In general, similar to male but ocular area and clypeus slightly darker, legs without or with indistinct dark rings, clypeus unmodified, leg tibiae with few vertical hairs. Tibia 1 in 21 females: 1.00–1.30 (mean 1.14); females from NE of Brumado tend to have shorter legs than topotypical females: ten females from NE of Brumado: 1.00–1.13 (mean 1.08); eleven females from SE of Paramirim: 1.07–1.30 (mean 1.20). Epigynum ( Fig. 116A ) anterior plate short and wide, posterior margin weakly indented, with distinct anterior pocket; posterior plate large but simple. Internal genitalia ( Figs 115C , 116B–D ) with strongly sclerotized median structure and very thin-walled large anterior membranous expandable sac; pore plates elongated, integrated into posterior arc. Internal genitalia in one cleared female from NE of Brumado as in cleared topotypical female.

Distribution

Known from three localities in southern central Bahia, Brazil ( Fig. 96B ).

Natural history

At the type locality, the spiders were collected on a hillside with bare granite outcrops and in the neighboring thorny shrubland on clayish soil ( Fig. 23E ). They were found both under rocks in areas fully exposed to the sun and in dead pieces of wood and cacti in the shrubland. The second locality (NE of Brumado) was a marble outcrop surrounded by arboreous caatinga on clayish soil; most specimens were found by turning rocks in the shrubland. At both localities, the microhabitat was shared with another species of Ninetinae tentatively placed in Kambiwa . Three egg sacs had diameters of ~1.8 and contained ~15– 18 eggs each, with egg diameters of 0.55–0.57.

Figures

Fig. 23. Ibotyporanga spp., typical habitats, part two (cf. Fig. 22); all localities except for A are in Brazil. A. Colombia, Santa Marta (type locality of I. ziruma Huber sp. nov.). B. Bahia, E of São Félix do Coribe (type locality of I. imale Huber sp. nov.). C. Bahia, SE of Bom Jesus da Lapa (type locality of I. atikum Huber sp. nov.). D. Bahia, W of Bom Jesus da Lapa (I. emekori Huber & Brescovit, 2003). E. Bahia, Paramirim (type locality ofI. kiriri Huber sp. nov.). F. Pernambuco, NE of Lagoa Grande (type locality of I. sertao Huber sp. nov.). G. Bahia, near Toca do Índio (I. emekori Huber & Brescovit, 2003 and I. diroa Huber & Brescovit, 2003). H. Bahia, SW of Morro do Chapéu (I. canudos Huber sp. nov.). Photos BAH.

Fig. 73. Ibotyporanga spp., live specimens, part three (cf. Figs 25, 55), all from Brazil. A. I. sertao Huber sp. nov., male from Pernambuco, W of Orocó. B–C. I. guanambi Huber sp. nov., male and female with egg sac from Bahia, N of Guanambi. D. I. emekori Huber & Brescovit, 2003, male from Bahia, near Toca do Índio.E. I. tuxa Huber sp. nov., male from Bahia, W of Barra do Mendes. F. I. kiriri Huber sp. nov., male from Bahia, SE of Paramirim. G. I. ouro Huber sp. nov., male from Bahia, E of Gentio do Ouro. H. I. canudos Huber sp. nov., male from Bahia, SW of Morro do Chapéu.

Fig. 96. Known geographic distribution of Brazilian species with long procursus, with dorsal branch on procursus, and with median sclerite in female internal genitalia. The figure is split in order to avoid too much overlap. The question mark denotes a possibly mislabeled female specimen of I. tuxa sp. nov.

Fig. 113. Ibotyporanga kiriri Huber sp. nov., male from Brazil, Bahia, SE of Paramirim, ZFMK Ar 24380. Left palp, prolateral, dorsal, and retrolateral views. Scale line: 0.3 mm.

Fig. 114. Ibotyporanga kiriri Huber sp. nov., male from Brazil, Bahia, SE of Paramirim, ZFMK Ar 24380. A–C. Left tarsus and procursus, prolateral, dorsal, and retrolateral views (arrow: dorsal hump on tarsus). D–F. Left genital bulb, prolateral, dorsal, and retrolateral views. Scale lines: 0.2 mm.

Fig. 115. Ibotyporanga kiriri Huber sp. nov., male and female from Brazil, Bahia, SE of Paramirim, ZFMK Ar 24380. A–B. Male chelicerae, frontal and lateral views. C. Cleared female genitalia, dorsal view (asterisk: expandable membranous sac not drawn, cf. Fig. 116C). Scale lines: 0.2 mm.

Fig. 116. Ibotyporanga kiriri Huber sp. nov., females from Brazil, Bahia, SE of Paramirim, ZFMK Ar 24380 (A–C) and from Bahia, NE of Brumado, ZFMK Ar 24381 (D). A. Abdomen, ventral view. B–C. Cleared female genitalia, ventral and dorsal views.D. Detail of cleared female genitalia, dorsal view. Abbreviations: es =expandable membranous sac; pp =pore plate. Scale lines: A–C =0.3 mm; D= 0.1 mm.

Fig. 118. Ibotyporanga ouro Huber sp. nov., male from Brazil, Bahia, E of Gentio do Ouro, ZFMK Ar 24382. A–C. Left tarsus and procursus, prolateral, dorsal, and retrolateral views (bold arrow: dorsal hump on tarsus). D–F. Left genital bulb, prolateral, dorsal, and retrolateral views. Abbreviation: db =dorsal branch of procursus. Scale lines: 0.2 mm.

Fig. 126. Ibotyporanga canudos Huber sp. nov., male from Brazil, Bahia, 25 km WNW of Morro do Chapéu, ZFMK Ar 24385. A–C. Left tarsus and procursus, prolateral, dorsal, and retrolateral views (arrow: dorsal hump on tarsus). D–F. Left genital bulb, prolateral, dorsal, and retrolateral views. Scale lines: 0.2 mm.