Camelobaetidius cruzi, Boldrini, R. & Pes, A. M. O., 2014

Boldrini, R. & Pes, A. M. O., 2014, Five new species of Camelobaetidius Demoulin, 1966 (Ephemeroptera: Baetidae), and redescription of Camelobaetidius mexicanus (Traver & Edmunds, 1968), Zootaxa 3796 (3), pp. 545-567 : 554-557

publication ID	https://doi.org/ 10.11646/zootaxa.3796.3.8
publication LSID	lsid:zoobank.org:pub:5DC6D761-D857-49B8-A88C-29DEC44E30F7
DOI	https://doi.org/10.5281/zenodo.6136549
persistent identifier	https://treatment.plazi.org/id/03F55C2C-E312-1C7D-FF2F-3C81FEB0FC84
treatment provided by	Plazi
scientific name	Camelobaetidius cruzi
status	sp. nov.

Treatment

Camelobaetidius cruzi sp. nov. Boldrini

( Figs. 3 View FIGURES 1 – 4 ; 28–37)

Diagnose. 1) Labrum narrowly rounded anteriorly ( Fig. 28 View FIGURES 28 – 33 ); 2) segment II of labial palp with a short rounded distomedial projection ( Fig. 33 View FIGURES 28 – 33 ); 3) thoracic gill absent at the base of coxae; 4) tarsal claws with 13 denticles ( Fig. 34 View FIGURES 34 – 37 a); 5) posterior margin of terga with rounded spines ( Fig. 35 View FIGURES 34 – 37 ).

Description. Nymph. Length: 2.8–3.2 mm; length of antennae: broken; length of cerci: 1.3 mm; length of terminal filament: 1.1 mm; tibia I: 0.3–04 mm; tibia II: 0.3 mm; tibia III: 0.3 mm.

Head ( Fig. 3 View FIGURES 1 – 4 ). Light brown. Antennae light brown. Lateral branch of epicranial suture straight.

Labrum ( Fig. 28 View FIGURES 28 – 33 ). Narrowly rounded anteriorly. Length about 0.8× maximum width; anterolateral margin with long, fine, bifid setae, anterior margin with fine, bifid and pectinate setae. Dorsally with two short, fine, simple setae over basal area; dorsolateral arc of setae with two long, fine and apically pointed setae on lateral region.

Left mandible ( Fig. 29 View FIGURES 28 – 33 ). Incisors with seven denticles. Prostheca robust, apically denticulate. Margin between prostheca and mola with three short, spine-like setae; subtriangular process wide; setae at apex of mola absent. Basal half with three fine, simple setae.

Right mandible ( Fig. 30 View FIGURES 28 – 33 ). Incisors with seven denticles. Prostheca slender, apically denticulate; margin between prostheca and mola with one short spine-like seta; setae at apex of mola present. Basal half without setae.

Hypopharynx ( Fig. 31 View FIGURES 28 – 33 ). Lingua shorter than superlingua, apex rounded with tuft of short, fine, simple setae. Superlingua rounded, with fine, simple setae on distal margin.

Maxilla ( Fig. 32 View FIGURES 28 – 33 ). Inner dorsal row of setae with two pectinate denti-setae, apical denti-seta at the same orientation of canines. Medial protuberance of galea with 1 + 3 long, fine simple setae. Maxillary palp 1.4× length of galea-lacinia.

Labium ( Fig. 33 View FIGURES 28 – 33 ). Glossa shorter than paraglossa; inner margin with seven fine, simple setae; apex with two long, fine setae; outer margin with three long fine setae; ventral surface with three short, fine, simple setae. Paraglossa sub-rectangular; apex with two rows of long, fine setae; ventral surface with four long, fine, simple setae ( Fig. 33 View FIGURES 28 – 33 a); dorsal surface with three fine, simple setae near apex. Labial palp segment II with distomedial projection short and rounded; dorsally with a row of two long, fine, spine-like setae. Segment III sub-quadrangular, length 0.8× width, scattered with spine-like setae.

Thorax ( Fig. 3 View FIGURES 1 – 4 ). Light brown; mesonotum with posterior region brown. Legs light brown. Hind wing pad present. Thoracic gill absent at the base of coxae. Tibia I 0.7× length of femur I, tibia II 0.8× length of femur II, and tibia III 0.7× length of femur III; tarsi I 0.6x in length of femur I, tarsi II 0.6× length of femur II, and tarsi III 0.5× length of femur III.

Forefemur ( Fig. 34 View FIGURES 34 – 37 ). Length about 3.2× maximum width; dorsally with row of c.a. nine spine-like setae increasing in length distally; ventrally with two short, spine-like setae. Foretibia. With one spine-like setae at apex; patella-tibial suture present, 0.5× length of tibia. Foretarsi. Ventrally with short, fine, simple setae and one short, spine-like setae near apex. Tarsal claws ( Fig. 34 View FIGURES 34 – 37 a) with 13 denticles. Mid femur. Length about 2.7× maximum width; dorsally with row of c.a. eight long, spine-like setae. Hind femur 2.4× maximum width; dorsally with row of c.a. six long, spine-like setae.

Abdomen ( Fig. 3 View FIGURES 1 – 4 ). Light brown; posterolateral corners of segments II and III and segments V and VI washed with brown, middle region of segments III and VI with a brown mark. Terga not creased, smooth, posterior margin of tergum IV with rounded spines ( Fig. 35 View FIGURES 34 – 37 ). Gills IV ( Fig. 36 View FIGURES 34 – 37 ) light brown; tracheae pigmented. Paraproct ( Fig. 37 View FIGURES 34 – 37 ). With two spines near inner margin; surface smooth, without shagreened area; postero-lateral extension smooth. Cerci light brown; outer and inner margin of terminal filament and inner margin of the cerci with tufts of long, simple setae.

Etymology: The name of the species is in honor of Paulo Vilela Cruz, who collected the nymphs of this species.

Distribution. BRAZIL: Mato Grosso do Sul.

Comments. The general shape of labial palp ( Fig. 33 View FIGURES 28 – 33 ), the number of denticles on the tarsal claws ( Fig. 34 View FIGURES 34 – 37 a) and the body color pattern ( Fig. 3 View FIGURES 1 – 4 ) of the new species are similar to those found in C. matilei ( Fig. 4 View FIGURES 1 – 4 ). Camelobaetidius cruzi sp. nov., however, is distinguished from C. matilei by the presence of hind wing pad.

Material examined. Holotype: Nymph (mounted on slides, medium Euparal), BRAZIL, Mato Grosso do Sul, Bonito, balneário municipal de Jardim, Rio Prata, 21°25'04.3"S / 56°23'24.0"W, 15.iii.2012, Cruz, P.V. leg ( INPA). Paratype: Two nymphs (mounted on slides, medium Euparal), same data as holotype, (one in CZNC and one in UFRR).