Camelobaetidius billi Thomas & Dominique

Nieto, Carolina, Grillet, Maria-Eugenia, Domínguez, Eduardo, Molineri, Carlos & Guerrero, Edmundo, 2011, The Family Baetidae (Insecta: Ephemeroptera) from Venezuelan Guayana’s Uplands, Zootaxa 2808, pp. 1-17: 4-8

publication ID

10.5281/zenodo.277093

persistent identifier

http://treatment.plazi.org/id/03B0801C-F27C-FF86-8AB7-F90EFAE4FCDD

treatment provided by

Plazi

scientific name

Camelobaetidius billi Thomas & Dominique
status

 

Camelobaetidius billi Thomas & Dominique  in Dominique et al. 2000

( Figs. 3View FIGURES 2 – 7, 17–26View FIGURES 17 – 26)

Taxonomy. The specimens collected in Venezuela, only nymphs, have a particular color pattern in the abdominal terga, with segments I and VI–VII brownish, the other segments yellowish as in Fig. 2View FIGURES 2 – 7. The original description did not mention this coloration. However the other characters are similar so we consider these specimens as belonging to Camelobaetidius billi  .

This species, described based on nymphs and adults, can be distinguished from the other species of the genus by the following combination of characters, in the adults: 1) abdominal color pattern with spots frequently on segments V–VI; 2) basal segment of forceps short, as long as wide, segment II slightly curved; 3) hind wings with posterior margin convex and with two longitudinal veins. In the nymphs: 1) labrum, dorsally with a subapical row of long setae ( Fig. 17View FIGURES 17 – 26 a), anterior margin with bipectinate setae ( Fig. 17View FIGURES 17 – 26 b); 2) mandibles with setae between prostheca and mola ( Figs. 18–19View FIGURES 17 – 26); 3) lingua longer than superlinguae ( Fig. 20View FIGURES 17 – 26); 4) maxillary palpi subequal to galea-lacinia ( Fig. 21View FIGURES 17 – 26); 5) segment II of labial palpi rounded medially ( Figs. 22View FIGURES 17 – 26 a and b); 6) coxal gills shorter than coxa ( Fig. 23View FIGURES 17 – 26); 7) tarsal claws with 30–31 denticles ( Fig. 24View FIGURES 17 – 26); 8) posterior margin of abdominal terga with rounded projections ( Fig. 25View FIGURES 17 – 26); 9) abdominal gills whitish; 10) paraproct as in Fig. 26View FIGURES 17 – 26; 12) terminal filament subequal in length to abdominal segment X.

Distribution. Brazil, French Guiana, Venezuela.

Material examined. One nymph: Maremán-Parú river, 5 º 44 ' N, 61 º 24 ' W, 1308 m, 23 / 11 / 2005, EG, AMO, CA and MEG cols.; 6 nymphs same locality and same collectors, 28 / 6 / 2007; 2 nymphs, same locality, 19 / 3 / 2006, EG, AMO, and MEG cols. Two nymphs: river close to Paují locality, 4 º 29 ' N, 61 º 34 ' W; 917 m, 17 / 3 / 2006, EG, AMO, and MEG cols. 7 nymphs: Kako-Parú stream, 5 º 12 ' N, 61 º 05' W; 1194 m, 24 / 11 / 2005, EG, AMO, CA and MEG cols.; 2 nymphs same locality, 20 / 3 / 2006, EG, AMO, and MEG cols. Three nymphs: Soroape river, 5 º 06' N; 61 º 34 ' W, 935 m, 25 / 11 / 2005, EG, AMO, CA and MEG cols. Two nymphs: Kamoirán river, 5 º 37 ' N; 61 º 21 ' W, 1313 m, 20 / 3 / 2006, EG, AMO, and MEG cols. Material housed at IMLAbout IML except 5 nymphs housed at MLBV.

IML

Instituto Miguel Lillo