Camelobaetidius anubis ( Traver & Edmunds, 1968 )

Boldrini, R., Pes, A. M. O., Francischetti, C. N. & Salles, F. F., 2012, New species and new records of Camelobaetidius Demoulin, 1966 (Ephemeroptera: Baetidae) from Southeastern Brazil, Zootaxa 3526, pp. 17-30 : 18-21

Camelobaetidius anubis ( Traver & Edmunds, 1968)

(Figs. 1–8)

Dactylobaetis anubis Traver & Edmunds, 1968: 666 .

Camelobaetidius anubis McCafferty & Waltz, 1990: 783 ; McCafferty & Klubertanz, 1994: 41; Lugo-Ortiz & McCafferty, 1995: 187; Dominique & Thomas, 2002: 32; Nieto, 2003: 234; Thomas et al., 2003b: 130; Salles et al., 2003: 5; Salles & Dias, 2004: 269; Salles et al., 2004a: 727; Francischetti et al., 2004: 35; Salles et al., 2004c: 15; Salles & Serrão, 2005: 268; Domínguez et al., 2006: 127; Boldrini & Salles, 2009: 10; Salles et al., 2010: 302; Falcão et al., (2011): 252.

Diagnoses. Nymph: 1) Segment II of labial palp with distomedial projection triangular with apex pointed; 2) abdominal terga orange brown with reddish brown marks on segments III and VI (Fig. 7); 3) thoracic gill present at base of forecoxa; 4) tarsal claws with 20–27 denticles; 5) paraproct with 3 pointed marginal spines; 6) terminal filament as long as cerci. Male adult: 1) Turbinate portion of compound eyes orange (Figs. 1, 2); 2) anteronotal protuberance pointed (Fig. 1); 3) abdominal terga orange brown with medial reddish brown marks on segments III and VI (Fig. 2); 4) posterior margin of sugenital plate convex, posteriorly projected; 5) forceps segment I without distomedial projection; 6) forceps segment I 0.3× length of segment II; forceps segment III 0.2× length of segment II (Fig. 3). Female adult: 1) anteronotal protuberance pointed (as in Fig. 1); 2) abdominal terga orange brown with medial reddish brown marks on segments III and VI (Fig. 4).

Comments. This species was described based on nymphs from Brazil, states of Paraná and Santa Catarina ( Traver & Edmunds, 1968). Nieto (2003) recorded this species from Argentina and described the male imago. Later, Salles et al. (2003, 2004a), Francischetti et al. (2004) and Boldrini & Salles (2009) recorded this species from Southeastern Brazil. Falcão et al. (2011) have also recorded this species from Northern Brazil, although some important variations were found in the nymphs (i.e. 35 denticles on tarsal claw). Herein, we improve the description of the male adult of C. anubis proposed by Nieto (2003), by adding new characters, and describe the female imago of this species.

Male adult. Length of tibia I: 1.6 mm; tibia II: 1.2 mm, and tibia III: 1.0 mm.

Head (Figs. 1, 2). Dorsal portion of turbinate eyes oval; length 1.6× width; stalk height 0.5× width of dorsal portion; inner margins parallel, not reaching each other.

Thorax (Figs. 1, 2). Metanotum with anteronotal protuberance pointed; metascutellar protuberance rounded and of the same level of the metanotum; pleura yellowish. Tarsi segment II of the middle and hind legs with one short apical spine (as in Fig. 7). Leg I: tibia 2.1× length of femur; tarsi 1.2× length of femur. Leg II: tibia 1.7× length of femur; tarsi 0.3× length of femur. Leg III: tibia 1.5× length of femur; tarsi broken.

Abdomen (Figs. 1, 2). Terga orange brown with medial reddish brown marks on segments III and VI. Genitalia (Fig. 3). Forceps segment I without distomedial projection, 0.3× length of segment II; distance between inner base of forceps 0.6× distance between lateral margins of forceps. Forceps segment II narrow submedially. Forceps segment III elongate, 2.9× as long as wide; 0.2× length of segment II. Posterior margin of subgenital plate convex, posteriorly projected.

FIGUES 1–7. Camelobaetidius anubis , adults. 1 – 3, male. 4 – 7, female. 1, body (l. v.). 2, body (d. v.). 3, genitalia. 4, body (d. v.). 5, forewing. 6a, hind wing. 6b, hind wing (enlarged). 7, detail of tarsal claw.

FIGUES 8–12. Camelobaetidius , nymphs (d. v.). 8, C. anubis . 9, C. cayumba . 10, C. janae . 11, C. juparana sp. nov. 12, C. spinosus sp. nov.

Female adult. Length of body: 5.2–5.8 mm; cerci: broken; forewing: 5.3–5.5 mm; hind wing: 0.9 mm; tibia I: 1.1 mm; tibia II: 1.2 mm; tibia III: 0.7 mm.

Head (Fig. 4). Yellowish brown, with whitish marks on vertex and base of compound eyes; ocelli whitish with base darker; antenna yellowish brown.

Thorax (Fig. 4). Pro, meso and metanotum yellowish brown. Pronotum with lateral margin dark brown; mesonotum with medioparapsidal suture dark brown, anteronotal protuberance pointed (as in Fig. 1); metanotum with posterior margin dark brown, metascutellar protuberance rounded and at the same level of metanotum; pleura yellowish. Legs. Tarsi segment II of legs with one short apical spine (Fig. 7). Femur yellowish brown; tibia and tarsi brown. Leg I: tibia 1.3× length of femur; tarsi 0.5× length of femur; segments IV>I>II>III. Leg II: tibia 1.4× length of femur; tarsi 0.3× length of femur. Leg III: tibia 1.1× length of femur; tarsi 0.2× length of femur.

Forewing membrane hyaline (Fig. 5); veins light brown; stigmatic area with six cross veins; marginal intercalary veins paired, except between vein s ICu2 and A; length of forewing about 2.5× width. Hind wing membrane and veins hyaline (Figs. 6a, 6b); with two complete longitudinal veins, without cross veins; costal process pointed, located on basal third.

Abdomen (Fig. 4). Terga orange brown with medial reddish brown marks on segments III and VI, and brown marks present on lateral margin of the segments II, III and V. Sterna yellowish white.

Distribution: ARGENTINA; BRAZIL: states of Espírito Santo, Minas Gerais, Paraná, Rio de Janeiro, Roraima, Santa Catarina and São Paulo ..

Material examined. Two male imagos (reared), BRAZIL, Espírito Santo, Alfredo Chaves, Nova Mantova , 20º39’22.6’’S / 40º50’12.9’’W, 5.xii.2010, Boldrini, R. ( CZNC) . Same as preceeding except one female imago (reared), Boldrini, R. ( INPA) . Same as preceeding except one female imago,12.xiii.2007, Boldrini, R . ( CNZC) .