Huancabamba, Benedetti & Pinto-da-Rocha, 2022

Benedetti, Alipio Rezende & Pinto-da-Rocha, Ricardo, 2022, Systematic revision and total evidence phylogenetic analysis of the Andean family Metasarcidae Kury, 1994 (Opiliones: Laniatores), with description of two new genera and twenty new species, Arthropod Systematics & amp; Phylogeny 80, pp. 309-388 : 309

3.28. Huancabamba gen. nov.

Figs 4A , 11A, B , 18A-C , 24A, B , 29A

Type species.

Huancabamba kubricki gen. et. sp. nov. by present designation.

Diagnosis.

Huancabamba gen. nov. can be distinguished from all other Metasarcidae genera by the combination of following: Kappa-type DSS; male femur IV at least 1.6 longer than DS length and with low tubercles; ocularium with two low tubercles; area III with spines; coxa IV apex reaching area III; penis with more than 13 MS C; a dry-mark in depression of ocularium, carapace, and lateral region to ocularium.

Description.

Kappa-type DSS, with carapace very wide, constriction I weakly marked and coda undefined, coalescing with mid-bulge. Ocularium low, medially depressed. Ocularium with two low tubercles. Areas of dorsal scutum moderately tuberculate. Area I undivided. Area III armed with two high spines. Posterior margin of DS armed with a pair of high tubercles. Coda short, without constriction. Coxa IV reaching area III. Coxa IV unarmed (Fig. 4A ). Femur IV about same size as dorsal scutum length (Figs 11A, B , 24A ). More than 13 MS C. Penis stylus thin thickness. Penis VP thin thickness (Fig. 18A-C ).

Derivatio nominis.

The genus name, a noun in the nominative singular, from Quechua, huanca (stone) + bamba (plain). It refers to Huancabamba depression, an interruption of the Andean Mountains, located between southern Ecuador and northern Peru. This depression constitutes a biogeographic barrier between the northern Andes and the central Andes. The name is a reference to this Metasarcidae genus occurred fartherst north. Gender: feminine.

Distribution.

(Fig. 29A ) PERU. Cajamarca .

Species composition.

Huancabamba kubricki gen. et. sp. nov.

Figures

Figure 4. Habitus, dorsal of males of Huancabamba gen. nov. and Incasarcus. A H. kubricki gen. et sp. nov.; B I. argenteus Kury & Maury, 1998; C I. dianae Kury & Maury, 1998; D I. ochoai Kury & Maury, 1998; E I. pictus Kury & Maury, 1998; F I. viracocha Kury & Maury, 1998; Legend bars = 1 mm.

Figure 11. Male trochanter-patella / tibia IV of Huancabamba gen. nov., Lumieria gen. nov. and Tschaidicancha, dorsal and ventral view, respectively. A - B H. kubricki gen. et sp. nov.; C - D L. antonionii gen. et sp. nov.; E - F L. woodyalleni gen. et sp. nov.; G - H T. chaplini sp. nov.; I - J T. joseochoai sp. nov.; K - L T. scorsesei sp. nov.; M - N T. weyrauchi Roewer, 1957; Legend bars = 1 mm.

Figure 18. Penis of Huancabamba gen. nov. and Incasarcus, dorsal, lateral and ventral views, respectively. A - C H. kubricki gen. et sp. nov.; D - F I. ochoai Kury & Maury, 1998; G - I I. viracocha Kury & Maury, 1998; Legend bars = 0.1 mm.

Figure 24. Live specimens of Huancabamba gen. nov. and Lumieria gen. nov. A H. kubricki gen. nov. et sp. nov., male; B female; C L. antonionii gen. nov. sp. nov., male; D female; E L. woodyalleni gen. nov. sp. nov., male; F female.

Figure 29. Distribution of Huancabamba gen. nov., Lumieria gen. nov. and Tschaidicancha in Peru. A H. kubricki gen. et sp. nov., L. antonionii gen. et sp. nov., T. chaplini sp. nov., T. scorsesei sp. nov., T. weyrauchi; B L. woodyalleni gen. et sp. nov., T. joseochoai sp. nov.