Camelobaetidius shepardi Randolph & McCafferty, 2001

Sibaja-Araya, Fabián & Esquivel, Carlos, 2020, Redescription of four species of Camelobaetidius Demoulin, 1966 (Ephemeroptera: Baetidae) from Central and North America, Zootaxa 4758 (2), pp. 257-274 : 267-272

publication ID

https://doi.org/ 10.11646/zootaxa.4758.2.3

publication LSID

lsid:zoobank.org:pub:91F0D735-DB99-44C9-A649-0A96D2C148F5

DOI

https://doi.org/10.5281/zenodo.3812359

persistent identifier

https://treatment.plazi.org/id/787087A2-FFAF-FFD9-FF74-F417C8E0FEF2

treatment provided by

Plazi

scientific name

Camelobaetidius shepardi Randolph & McCafferty, 2001
status

 

Camelobaetidius shepardi Randolph & McCafferty, 2001 View in CoL

( Figures 8–11 View FIGURE 8 View FIGURE 9 View FIGURE 10 View FIGURE 11 )

Camelobaetidius shepardi Randolph & McCafferty, 2001: 17 View in CoL ; McCafferty et al. 2004: 207; Meyer et al. 2008: 136; McCafferty, 2011b: 324.

Diagnosis. Mature nymph. The following combination of characters can be used to diagnose C. shepardi from remaining species in the region: 1) labrum with anterior margin with about 17 small, double frayed setae; 8–9 setae on anterodorsal arc, about 15 anterolateral setae; intermediate setae present but often inconspicuous; several micropores near anterodorsal arc; three short setae near lateral margin; one minute seta on anterior margin on both sides of cleft ( Fig. 9a View FIGURE 9 ); 2) segment II of labial palp with round (female) or truncate (male) distomedial projection ( Figs. 10a, 10b View FIGURE 10 ); 3) osmobranchia absent from coxal bases; 4) each tarsal claw with 21–29 denticles ( Fig. 11a View FIGURE 11 ); 5) posterior margin of abdominal tergum IV with triangular spines subequal in length ( Fig. 11b View FIGURE 11 ); 6) paraproct with 2–3 spines ( Fig. 11c View FIGURE 11 ).

Description. Mature nymph body length: 4.0– 6.2 mm; caudal filaments length 1.5–2.3 mm.

Body coloration: dark and light olive and white pattern; pronotum and metanotum homogeneous dark olive; mesonotum with elongate, dark olive spots; abdomen with tergum I and anterior half of tergum II white, posterior half of tergum II and terga III–VII dark and light olive, tergum VIII and anterior half of tergum IX white; small, light olive spots on tergum VIII; posterior half of tergum IX and tergum X dark olive ( Figs. 8A, 8B, 8C View FIGURE 8 )

Head: Labrum ( Fig. 9a View FIGURE 9 ): Broader than long; round, symmetrically emarginateat apex, arc of anterodorsal setae with 8–9 setae, two inner setae frayed, rest simple; intermediate seta present but sometimes inconspicuous; several micropores below anterodorsal arc; several small setae near posterior margin; anterior margin with about 17 small, double, frayed setae; lateral margin with 6 simple setae and 9 apically frayed, long setae; ventral surface with dense arc of short, fine setae near anterior margin; three short setae near lateral margin; one minute seta on anterior margin on both sides of cleft. Left mandible ( Fig. 9b View FIGURE 9 ): incisors worn; prostheca well-developed; two minute setae between prostheca and mola; several small, simple setae on basal region. Right mandible ( Fig. 9c View FIGURE 9 ): incisors worn; prostheca well-developed; two short, simple setae between prostheca and mola; molar disk well-developed; several small, simple setae on basal region. Hypopharynx ( Fig. 9d View FIGURE 9 ): lingua about 2x wider, but shorter than, superlinguae, apically pointed, hairy on dorsal and ventral surfaces in upper half; superlinguae with upper half hairy on dorsal and ventral surfaces and with serrate area at middle of lateral margin. Maxillae ( Fig. 9e View FIGURE 9 ): robust, with several micropores on basal region; galea with four apical denticles and two apical rows of setae, some setae of one of these rows large and thick while others thin, and setae of other row shorter and curved; four setae on lacinia; palp not surpassing apical denticles, segment I short, segment II thick with few marginal fine setae and several micropores, segment III elongate with several marginal fine setae, longer than segment II. Labium ( Figs. 10a, 10b View FIGURE 10 ): robust; glossae shorter than paraglossae, bothe dorsally with numerous elongate and curved setae; ventrally with several elongate and curved setae; palpi with segment I thick, as long as segments II + III, dorsal surface with numerous micropores; segment II with truncate (male, Fig. 9a View FIGURE 9 ) or round (female, Fig. 9b View FIGURE 9 ) distomedial projection, dorsal surface with numerous micropores, and 3–6 short, simple setae in upper half; ventral surface with numerous fine setae; segment III short and rounded, more developed than distomedial projection, with numerous short, robust spines on ventral surface, dorsal surface with row of short and robust setae on apex.

Thorax: Hind wing pads present; osmobranchia absent from coxal bases; each claw with 21–29 denticles ( Fig. 11a View FIGURE 11 ).

Abdomen: Posterior margin of tergum IV with small, triangular spines subequal in length and simple, fine setae surpassing length of longest spines ( Fig. 11b View FIGURE 11 ); paraproct with 2–3 sclerotized spines, and simple, fine setae on dorsal surface, posterior margin with small triangular spines ( Fig. 11c View FIGURE 11 ).

Distribution: Mexico, Guatemala and Nicaragua ( Randolph & McCafferty, 2001; McCafferty et al., 2004; Meyer et al., 2008).

Material examined: Paratypes, three mature nymphs (two males and one female): México, Queretaro, Neblinas, Río Ayutla , 13.VII.2000, W. D. Shepard [ PERC] [There is no Ayutla River on Neblinas and on the list of the examined material Randolph & McCafferty (2001) wrote exactly the same data listed above, except for Río Verdito instead of Río Ayutla. Our conclusion, therefore, is that the name of the river on the paratypes label is not correct] .

Kingdom

Animalia

Phylum

Arthropoda

Class

Insecta

Order

Ephemeroptera

Family

Baetidae

Genus

Camelobaetidius

Loc

Camelobaetidius shepardi Randolph & McCafferty, 2001

Sibaja-Araya, Fabián & Esquivel, Carlos 2020
2020
Loc

Camelobaetidius shepardi Randolph & McCafferty, 2001: 17

McCafferty, W. P. 2011: 324
Meyer, M. D. & Baumgardner, D. E. & McCafferty, W. P. 2008: 136
McCafferty, W. P. & Baumgardner, D. E. & Guenther, J. L. 2004: 207
McCafferty, W. P. & Klubertanz, T. H. & Randolph, R. P. & Provonsha, A. V. & Lawson, H. R. & Kondratieff, B. C. 2001: 17
2001
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