The South American spider genera Mesabolivar and Carapoia (Araneae, Pholcidae): new species and a framework for redrawing generic limits Author Huber, Bernhard A. text Zootaxa 2018 2018-03-19 4395 1 1 178 journal article 30485 10.11646/zootaxa.4395.1.1 8bee84d8-4a01-4e53-8eb3-af176ce1feb9 1175-5326 1202519 B43C234D-45C4-4A6D-9836-8A7524A5B291 Mesabolivar cyaneus ( Taczanowski, 1874 ) Figs 100–101 , 108–109 Pholcus cyaneus Taczanowski, 1874 : 103 , pl. 2, fig. 6 (♂♀, Brazil: Amapá; see Note below). Blechroscelis cyanea : Mello-Leitão 1940b : 175 . Blechroscelis rubristernus Caporiacco, 1947: 22 (♂♀, Guyana). Caporiacco 1948: 627, figs 19–21. Mesabolivar rubristernus : Huber 2000: 204 , figs 796–800. Mesabolivar cyaneus : Huber 2000: 190 . Huber & Zhu 2001 : 152 (synonymy of M. rubristernus ). Diagnosis. Distinguished from most similar known relative ( M. spinosus ) by more slender and longer procursus (compare Figs 101 and 103 ), bulbal process distally simpler (compare Figs 109 and 111 ), and by female external and internal genitalia (epigynum narrower; relatively smaller internal sclerotized structure, compare Huber 2000: figs 799–800 and Figs 112, 114 ). Type material. BRAZIL (see Note below): Amapá : ♂ lectotype , 1♂ paralectotype , MIZW , “Uassa-Guyane française” [Rio Uaça, ~ 4.13°N , 51.53°W ], leg. K. Yelski, examined ( Huber & Zhu 2001 ). Note. Taczanowski (1874) described the species from “Uassa et de Saint Laurent de Maroni”. Huber & Zhu (2001) designated a lectotype from “Uassa”. According to various authors (e.g., Mlíkovský 2009 ), this locality is now Rio Uaça in the state of Amapá, Brazil. New records. VENEZUELA : Bolívar : 3♂ 4♀ , ZFMK (Ar 19650), km 109 from El Dorado ( 6°01’N , 61°23.5’W ), ~ 800 m a.s.l. , domed webs near ground, 3.xii.2002 ( B.A. Huber ) . 1♂, ZFMK (Ar 19651), km 102 from El Dorado (6°04’N, 61°24’W), ~ 500 m a.s.l., near ground, 2.xii.2002 (B.A. Huber). Description (amendments; see Huber 2000). Tibia 1 in four newly examined males: 14.5, 14.9, 16.0, 16.4; in two females: 10.8, 10.9. Tibia 1 L/d in two males: 78, 81; male leg femora 3 of different color (pale yellowish in ethanol rather than brown to black) and much wider than other femora (diameters femora 1–4 in one male: 0.21, 0.22, 0.41, 0.21). Male palpal trochanter with indistinct ventral hump (not with finger-shaped apophysis as in M. aurantiacus and M. spinosus ). In most females, the distinctive median sclerotized sac(?) in the internal female genitalia (cf. Huber 2000: fig. 800) is clearly visible through the cuticle. Distribution. Widely distributed, ranging from northeastern Brazil ( Amapá ) to eastern Venezuela ( Fig. 725 ).