Dentoluzara Cadena-Castañeda & Quintana-Arias 2024, n. gen.
Creators: name: Cadena-Castañeda, Oscar J.
name: Quintana-Arias, Ronald Fernando
Publisher: name: Zenodo
Year: 2024
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Orthoptera
Phalangopsidae
Dentoluzara

description: Dentoluzara n. gen.
Type species. Dentoluzara s patulatus n. gen. et n. sp. by monotypy and original designation.
Etymology. The name of this new genus is from the Latin word “ dentes ” (tooth), and Luzara is the type genus of the subfamily Luzarinae, which is close to the new taxa described here.
Description. Body mid-sized (23–25 mm.), dark brown, with reddish brown, and black spots or stripes; body surface generally smooth and shiny (Fig. 1). Head almost as wide as pronotum in dorsal view, rounded and smooth; higher than wide in frontal view; vertex convex; fastigium almost 0.5 times as wide as scape (Fig. 2A); eyes ovoid, not protruding; ocelli ovoid; antennal sockets located at the middle level of the lateral margin of the eyes (Fig. 2B); maxillary palps thin and elongated, last segment with apical oblique truncation (Fig. 2C). Mandibles asymmetric, the left one is a little longer than the right mandible, near the base of the left mandible, with a medium-sized denticle or prolongation, which is absent in the left one (Figs. 2A–C). Thorax. Pronotal disc a little wider than long, and smooth; anterior margin rounded and posterior one straight; lateral lobes square, almost as wide as high, and with rounded margins (Fig. 2C). Prosternum unarmed, quadrangular-shaped; mesosternum quadrangular, posterior margin with small notch; metasternum broader than mesosternum, slightly expanded and hexagonal, posterior margin convex. Legs slim and elongated, fore, mid femora, and tibiae unarmed; fore tibia with a small inner and outer tympanum and with two apical and ventral spurs, small compared to tarsomeres; mid tibia with two ventral apical spurs; first tarsomere of fore and mid legs 3.5 longer than the third one, the second tarsomere reduced and five times smaller than the second one. Hind tibia with three spurs in both apical margins, the spurs of the inner side longer than the outer, the mid-outer apical spur longer, the other two spurs subequal; the dorsal inner spur is the longest and increasing in length from the mid and ventral spurs respectively. Hind tarsomeres with a single row of spines and distally armed with a spur. Wings not surpassing the apex of abdomen, moderately thickened, smooth, and shiny; venation faint, stridulum complete, harp without veins (Fig. 2D). Abdomen without modifications. Epiproct trapezoidal, slightly carinate at sides, without processes or notable modifications (Fig. 2E); cerci normally developed, mid-sized; subgenital plate, longer than wide (Fig. 2F). Male genitalia. Pseudepiphallus with A and B sclerites present (Figs. 3A, C, D), A. scl. quadrangular and dorsoventrally flattened (Figs. 3A, C); B. scl. thin and unmodified (Fig. 3C); ps. p2 longer and wider than the other sclerites (Figs. 3A, B), ps. p1. arising near the base of pseudepiphallus; ps. s. thin and submembranous (Figs. 3A, C), ec. f. moderately widened and divided at apex, then projects posteriorly and is predominantly membranous (Figs. 3A, C); arc straight and moderately thickened (Figs. 3B, C), connecting with the ec. a. (Figs. 3A, B); ec. a., curved and hook-shaped; en. s. sclerotized, and posteriorly divided in paired en. a; r. poorly developed and completely membranous (Fig. 3A).
Female. Unknown.
Distribution. Only known from the Colombian Andes.
Comparison. Dentoluzara n. gen. is differentiated from the other members of the subtribe Luzarina (sensu Gorochov), by its asymmetrical mandibles, of which the left mandible has a basal prolongation.It is also differentiated from the other taxa by the particular spatula-shape ps. p2 and the r. completely membranous and poorly differentiated (Fig. 3). The new genus resembles Luzara Walker, 1869, Luzarida Hebard, 1928, Luzaridella Desutter-Grandcolas, 1992, and Megalamusus Hebard, 1928.
Dentoluzara n. gen. resembles Luzara and Megalamusus, due to the shape and surface of the tegmina, which is smooth and without conspicuous venation, and the coloration of the body is more uniformly brown, unlike other close genera, such as Luzarida, which have delineated venation, and easily distinguishable. Luzarida and Luzaridella generally have a lighter coloration with various ocher or brown spots. The A. scl. of the genera Luzara, Luzarida, and Luzaridella it is developed and more conspicuous than in the new genus, and it can be pointed or rounded, while for Dentoluzara n. gen. it is quadrangular.
description: Published as part of Cadena-Castañeda, Oscar J. & Quintana-Arias, Ronald Fernando, 2024, Studies on Neotropical crickets: A new Tusked Cricket genus (Orthoptera: Phalangopsidae) from Colombia, pp. 234-242 in Zootaxa 5424 (2) on page 236, DOI: 10.11646/zootaxa.5424.2.7, http://zenodo.org/record/10821132