Juxtlacampa fernandodebueni Sendra & García, 2016

Sendra, Alberto, Palacios, Jose, Garcia, Arturo & Montejo, Maira, 2016, New Species of Campodeidae (Diplura) from Mexican caves, Zootaxa 4072 (5), pp. 540-558 : 553-556

Juxtlacampa fernandodebueni Sendra & García new species

( Figs. 26‒28 )

Description. Body length 5.5 and 5.6 mm (two females, holotype included). Smooth epicuticule; long, thin clothing setae covered with thin barbs.

Antennae broken, the longest fragment has only fifteen antennomeres. Sensillum of third antennomere subcylindrical sharply pointed located ventral position between macrosetae d and e. Central antennomeres 2 times longer than wide. About sixteen long gouge sensilla (26 Μm) in one single distal whorl. Frontal process slightly developed, with apical macrosetae and two posterior macrosetae barbed along the last half. Three macrosetae along line of insertion of antennae and x setae with relative lengths in female holotype (length 5.6 mm) as a = 0.82, p = 0.73, i = 1 and x = 0.80, all well barbed along the distal two-thirds. Subtriangular labial palp ( Fig. 26 ), with sinuous latero-external sensillum, two guard setae, up to 12 setae on anterior border and up to 100 neuroglandular setae.

Thoracic nota elongated. Distribution of macrosetae ( Fig. 27 ): pronotum and mesonotum with 1+1 ma, 1+1 la, 1+1 lp; metanotum with 1+1 ma. All macrosetae long, well developed with thin barbs along the distal two-thirds; marginal setae slightly longer, thicker and with more barbs than clothing setae. Legs slightly elongated, metathoracic legs reaching abdominal segment VIII. Femur III without dorsal macrosetae. Ventral tibial macrosetae absent. Calcars well barbed from base to tip with long barbs. Dorsal and lateral tarsal setae completely covered by thin barbs almost from their base. Subequal elbow-like claws with well-developed slightly ridged lateral crests on dorsal side. Telotarsal process laminar in its basal portion with ventral long pubescence but becoming narrow along distal portion and completely surrounded by long pubescence.

Distribution of abdominal macrosetae on tergites: 1+1 la, 1+1 post VI-VII, 4+4 post VIII and 6+6 post IX; all long and well barbed almost from their bases ( Fig. 28 ); holotype with 0+1 bizarre ma macrosetae on urotergite I. Urosternite I with 22+22 thick macrosetae with long barbs; Urosternite II to VII with 9+9 macrosetae, urosternite VIII with 2+2 macrosetae. Apical setae of styli with basal tooth divided in two branches and completely barbed with thin barbs; subapical and medial sternal setae barbed. Cerci missing in type specimens.

Female urosternite I with thick subcylindrical appendages, with two fields of 10 a1 - glandular setae and 33 a2 - glandular setae in the holotype.

Type material. Holotype, female and 1 female paratype from “Resumidero La Joya”, 99° 33’ N, 18°35’ W in Taxco’s limestone massif at El Gavilán, Guerrero, México, Taxco, Guerrero, México, V 2009, A. García leg., mounted in Hoyer’s solution, deposited in UNAM.

Etymology. This species is dedicated to the Spanish ichthyologist Fernando de Buen Lozano, who came to México to continue his important work with his father, the well-known marine biologist Odón de Buen, and his brother Rafael de Buen.

Remarks. Juxtlacampa fernandodebueni n. sp. shares with J. juxtlahuacensis a similar laminar telotarsal process, a peculiar subtriangular labial palp and numerous macrosetae on urosternites. The male of J. fernandodebueni n. sp. is still unknown, but chaetotaxic differences allow its separation from the other Juxtlacampa spp., J. justlahuacensis and J. hauseri Condé, 1975 . These differences are based on the distribution of thoracic and abdominal macrosetae. Juxtlacampa fernandobueni n. sp. has 2+2 (ma, la) medial-anterior and lateral-anterior and 1+1 (ma) medial-anterior meso and metanotal macrosetae and has lateral-anterior and lateralposterior macrosetae on urotergites VI and VII. In J. justlahuacensis these urotergal macrosetae have undergone a reduction in number (1+1 medial anterior on mesonotum and 0 macrosetae on metanotum; 2+2 posterior macrosetae on abdominal segment VIII and 4+4 posterior macrosetae on IX) and J. hauseri (1+1 medial-anterior macrosetae on meso and metanotum; 1+1 posterior macrosetae on VIII).

Figures

FIGURE 26. Juxtlacampa fernandodebueni Sendra & García, new species. Ventral head chaetotaxy, left side.

FIGURES 27 ‒ 28. Juxtlacampa fernandodebueni Sendra & García, new species. 27) Chaetotaxy of pronotum, mesonotum and metanotum, right side; 28) Abdominal chaetotaxy of urotergites VI – IX.