Mysmenopsis lopardoae, Pantoja & Bonaldo & Xavier, 2023

Pantoja, Paulo, Bonaldo, Alexandre Bragio & Xavier, Cláudia, 2023, On the symphytognathoid spider genus Mysmenopsis Simon, 1898 (Araneae: Mysmenidae) from the Brazilian Amazonian region: description of five new species and new records, Zootaxa 5319 (1), pp. 57-75 : 66

Mysmenopsis lopardoae new species

Figs 6B, D , 7E–H , 12B

Type material. 1♁ holotype. BRAZIL: Amazonas , Careiro, 04.VII.2007, E.H. Wienskoski leg., collected at night ( INPA) .

Etymology. The specific epithet is a patronym in honor of Lara Lopardo, arachnologist who made an important contribution to Mysmenidae systematics.

Diagnosis. Males of M. lopardoae n. sp. (Figs E–G) are similar to those of M. otonga Dupérré & Tapia, 2015 ( Figs 9–10 in Dupérré & Tapia, 2015) by the presence of a retrolateral projection of the cymbium, apical to the tegulum and additional to the paracymbium, but differs by the absence of cymbial cusps, tegulum with small apical process and absence of a robust embolar apophysis ( M. otonga has 17 tibial cusps, bulky tegulum without apical process, presenting a robust embolic apophysis).

Description. Male holotype. Total length: 1.31; carapace length: 0.61; carapace width: 0.59; abdomen length: 0.70; abdomen width: 0.68. Cephalothorax: carapace dark brown, pear-shaped, with a median black longitudinal spot ( Fig. 6B ). Sternum dark brown suffused with black, covered with long setae. Clypeus brown, high (4x AME). Chelicerae brown. Eyes: eight, rounded, AME approximately 1.5x larger than the others, which are approximately equal size; ocular region on protuberance; AME separated by their diameter; AME–ALE touching; ALE–PLE contiguous, PLE–PME separated by their diameter; PME separated by their diameter. Abdomen: suboval, grey with white patches in a circular pattern anteriorly ( Figs 6B, D ) followed by a semicircular row of white rounded and two longitudinal rows of white rounded white patches in posterior view ( Fig. 6D ). Legs: yellow, patella, tibiae and metatarsi I–IV with ventral black bands apically, femora II–IV with a median ventral black band. Leg spination: tibia I with one apical prolateral clasping spur and row of seven macrosetae prolaterally; metatarsus I with one apical prolateral curved clasping spur ( Fig. 7H ). Total length leg I: 2.28 (0.58/0.29/0.63/0.43/0.35); leg II: 1.93 (0. 64/0.20/0.42/0.34/0.33); leg III: 1.69 (0.47/0.16/0.38/0.33/0.35); leg IV: 1.93 (0.59/0.19/0.48/0.35/0.32). Genitalia ( Figs 7E–G ): tibia bulky, with ventral pedicel, without cusps; cymbium with apical region and paracymbium domed, dorsal cymbial region more sclerotized and sclerotized retrolateral projection, longer than wide, with rounded apex, on the dorsal apical region of the tegulum; tegulum apically with small retrolateral projection below the embolus; embolus with broad base and narrow apex, comma-shaped in retrolateral view, flattened dorsoventrally.

Distribution. Only known from the type locality.

Natural History. No data available.

Figures

FIGURE 6. Mysmenopsis spp. A, C, Mysmenopsis snethlageae n. sp., male. B, D, Mysmenopsis lopardoae n. sp., male. A, Habitus dorsal view. C, abdomen, posterior. B, Habitus dorsal view. D, abdomen posterior. Scale bars, A, B, 0.3 mm. C, D, 0.2 mm.

FIGURE 7. Mysmenopsis spp. A−D, Mysmenopsis snethlageae n. sp., left male palp and left leg I. E−H, Mysmenopsis lopardoae n. sp., right male palp, mirrored, and left leg I. A, retrolateral. B, prolateral. C, ventral apical, filled embolus. D, leg I, tibia and metatarsus. E, retrolateral (arrow points to retrolateral cymbial projection). F, prolateral. G, ventral apical, filled embolus. H, leg I, tibia and metatarsus. Abbreviations, CBP, cymbial basal plate. E, embolus. EA, embolic apophysis. Pc, paracymbium. PP, posterior plate. S, spermathecae. TP, tegular process. Scale bars, 0.1 mm.

FIGURE 9. Mysmenopsis regiae n. sp., left male palp and right leg I, mirrored. A, retrolateral. B, prolateral. C, dorsal apical, filled embolus. D, leg I, tibia and metatarsus. Abbreviations, CG, cymbial groove. E, embolus. EA, embolic apophysis. Pc, paracymbium. Scale bars, 0.1 mm.

FIGURE 10. Mysmenopsis spp. A–B, Mysmenopsis cienaga Müller, 1987. A, retrolateral. B, prolateral. C–D, Mysmenopsis penai Platnick & Shadab, 1978. C, retrolateral. D, prolateral. E–F, Mysmenopsis shushufindi Dupérré & Tapia, 2020. E, retrolateral. F, prolateral. Scale bars, 0.1 mm.

FIGURE 12. Distribution records of Mysmenopsis mentioned in this study.