Pronura yunquensis, Ospina-Sánchez & Palacios-Vargas & González, 2021

Ospina-Sánchez, Claudia M., Palacios-Vargas, José G. & González, Grizelle, 2021, A new species of Pronura (Neanuridae: Paleonurini) from the Luquillo Mountains Puerto Rico with a key to American poorly tuberculated Paleonurini, Zootaxa 4996 (3), pp. 581-590 : 582-586

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Pronura yunquensis

sp. nov.

Pronura yunquensis sp. nov. Ospina-Sánchez, Palacios-Vargas and González

Figs.1–7 View FIGURE 1 View FIGURE 2–6 View FIGURE 7 , Tables 1A–C

Diagnosis of the species: This is the first Neotropical species without eyes and the combination of the following characters: head tubercles De, DL and O present, setae D and Ocp absent. Abd IV with Di1 shifted toward De. Abd V Di2 is close to the middle line and De+DL are fused with two thick macrosetae, one sensillum, one pointed macroseta, and one microseta.

Type material: Holotype: male on slide. Paratypes: 2 males, 1 female on slides. All type material kept at corresponding author’s institution.

Type Locality: Puerto Rico, Fajardo, Pico del Este , 18° 16’ 17”N, 65 °45’ 40”W; 987 m a.s.l; Tabebuia rigida forest type, 19.ii.2015 GoogleMaps . Puerto Rico, Luquillo, Toro Trail 18° 16’ 40”N, 65 °50’ 53”W; 815 m a.s.l; Cyrilla racemiflora forest type, 19.ii.2015 GoogleMaps .

Other material: 1 immature on slide, Puerto Rico, Luquillo, Yunque Peak 18° 18’ 37”N, 65 °47’ 26”W 1045 m a.s.l.; Tabebuia rigida forest type, 4.xi.2014 GoogleMaps . 1 immature on slide, Puerto Rico, Fajardo, Pico del Este , 18° 16’ 17”N, 65 °45’ 40”W; 987 m a.s.l; Tabebuia rigida forest type, 4.xi.2014 GoogleMaps . C. M. Ospina–Sánchez Coll.

Description: Length adult n=4, 0,895 mm (0,769–1,02); immature n=2, 0,64 (0, 598–0,682). Color in alcohol white. Granulation fine. Only dorso-lateral tubercles on Abd III, IV and V well developed. Body clothing comprising microsetae (less than 1µm); mesosetae (1–2µm); thick, hyaline macrosetae (3–5µm), and acuminate macrosetae (4–5µm), in addition to sensorial setae (3–4µm) ( Fig.1 View FIGURE 1 )

Head. Antenna shorter (ratio head: antenna: 1:0.47) than head diagonal. Ant III and IV fused dorsally, ventral separation well marked. Ant IV dorsally with eight subequal sensilla, twelve long and pointed setae, apical organ differentiated, subapical bulb absent ( Fig. 2 View FIGURE 2–6 ). Ant III dorsally with two globular sensilla in a cuticular fold and two guard sensilla. S.g. v. almost straight and subequal to S.g.d.; one ventral microsensillum ( Fig. 3 View FIGURE 2–6 ). Ant II with eleven setae. Ant. I with seven setae, including three macrosetae with blunt tips ( Fig. 2 View FIGURE 2–6 ).

Eyes absent. Head with three pairs of weakly delimited tubercles, and dorsal chaetotaxy as in Fig. 1 View FIGURE 1 and Table 1A. Mandibles styletiform, maxillae with a hook shape. Labrum elongate, rounded apically; formula 0/2,4 ( Fig. 4 View FIGURE 2–6 ). Labium with ten pairs of setae ( Fig. 5 View FIGURE 2–6 ). Four setae Vi on ventral side of head ( Fig. 5 View FIGURE 2–6 ), head ventral chaetotaxy in Table 1B.

Thoracic and abdominal dorsal chaetotaxy as in Fig. 1 View FIGURE 1 and Table 1C. Abd VI unilobed, lacking tubercle. Setal numbers on legs as in Table 2. Unguis without inner teeth ( Fig. 6 View FIGURE 2–6 ).

Ventral tube with 4+4 setae. Furcal vestige with two regular setae and one microsetae. Ventral chaetotaxy as shown in Table 1C and Fig.7 View FIGURE 7 . Male genital plate with 3+3 pregenital, twelve circumgenital and four pairs of eugenital setae. Each lateral anal valve with eleven regular setae and two microsetae ( Fig. 7 View FIGURE 7 ).

Etymology: yunquensis is a reference of the locality were the species was found on mountain peaks at El Yunque National Forest in Puerto Rico.

*setae in Fu not paired.