Campylocia roraimense, Neto, Jaime De Liege Gama & Passos, Mahedy Araujo Bastos, 2017

Neto, Jaime De Liege Gama & Passos, Mahedy Araujo Bastos, 2017, A new species of Campylocia Needham & Murphy, 1924 (Ephemeroptera, Euthyplociidae) from Northern Brazil, Zootaxa 4244 (2), pp. 296-300 : 297-300

Campylocia roraimense sp. nov.

Male imago ( Figs 1–7 )

Diagnosis. Campylocia roraimense sp. nov. male imago can be separated from all its congeners by the following combination of characters: 1) Forewings with fork of Rs basal to fork of MA; 2) Forewings with one or two intercubital veins; 3) Terga I-VIII with purplish brown dorsolateral area and light colored medial line; terga II– VII with two pairs of light colored drop-shaped spots (one medioapical and one medial); tergum VIII with a medioapical pair of light colored drop-shaped spots; 4) Subgenital plate rectangular with dark brown margins medially emarginated; 5) Penis with rectangular base; 6) Penis without median lobes; 7) Penis lobes adjacent to the medial line, laterally directed in dorsal view, fused on basal 1/2 and more slender on apical 2/3.

Length: body: 14.9–21.4 mm (Average (A) = 19.2 mm; Standard Deviation (SD) = 2.2 mm; Sample (N) = 10); forewings: 14.1–18.5 mm (A = 16.7 mm; SD= 1.4mm; N = 10); hindwings: 5.6–8.2 mm (A = 6.9mm; SD = 0.8mm; N = 10).

Head: pale yellow in the front; pale brown in the posterior region and between ocelli. Well developed black compound eyes. Ocelli whitish; lateral ocelli are connected by a dark brown line ( Fig. 1 ). Antennae pale yellow.

Thorax: Pro-, meso- and metanota orange-yellowish ( Figs. 1–2 ); pronotum with blackish anterolateral region and membranous posterior border slightly projected on the mesonotum ( Fig. 1–2 ). Mesonotum with yellow-orange anterolateral scutal suture ( Fig. 1 ). Pleura pale yellow ( Fig. 2 ). Fore and hindwings hyaline with dark brown veins. Forewings with: fork of Rs basal to fork of MA, two intercalary veins between IMP and MP2, two intercalary veins between MP2 and CuA, one intercalary vein attached to CuA ( Fig. 4 ). Hindwings with IMP and MP2 veins attached to vein MP1 ( Fig. 5 ). Coxae of all legs orange-yellowish; fore tibias yellow with dark spots; middle and hind tibias yellow, black-spotted and with a dark yellow medial longitudinal line.

Abdomen: General color whitish. Terga I–VIII with purplish brown dorsolateral area and light colored medial line ( Fig. 3 ), faded in some old specimens preserved for a long time in alcohol; terga II–VII with two pairs of light colored drop-shaped spots (one medioapical and one medial); tergum VIII with a medioapical pair of light colored drop-shaped spots; terga IX–X orange ( Figs. 1–3 ).

Genitalia: subgenital plate rectangular with dark brown margins and medial emargination ( Fig. 6 ). Forceps translucent white ( Fig. 7 ). Forceps sockets bordered by dark brown lines ( Fig. 7 ). Base of penes rectangular, wider than long in ventral view ( Fig. 6 ). Membranous penes fused on basal 1/2, slightly curved backward and with dorsolateral region sclerotic ( Figs. 6–7 ). Penis lobes adjacent to the medial line, laterally directed in dorsal view, more slender on apical 2/3 ( Fig. 6 ).

Caudal filaments: very long and translucent, approximately 2.5 times length of body.

Variation in paratypes: We verified variation in the venation of the male imago forewings. The number of intercalary veins varied either in a same individual or between different specimens. Two intercalary veins between IMP and MP2, two intercalary veins between MP2 and CuA and a single ICu vein in both forewings was the most common pattern detected ( Fig. 4 ). However, we observed individuals with two intercalary between IMP and MP 2 in one fore wing and three or five in the other, and individuals with three intercalary between IMP and MP 2 in one fore wing and four in the other wing; individuals with two intercalary between MP2 and CuA in one fore wing and three, four or five in the other and individuals with three intercalary between MP2 and CuA in one fore wing and four in the other; individuals with two ICu vein in both fore wings and individuals with a single intercalary ICu vein in one forewing and two ICu vein in the other wing.

Female imago ( Figs 8–9 )

Similar to male imago, with the following exceptions:

Length: body: 28.1–40.3 mm (Average (A) = 34.2 mm; Standard Deviation (SD) = 3.21) mm; Sample (N) = 10); forewings: 26.2–37.2 mm (A = 30.0 mm; SD= 3.12mm; N = 10); hindwings: 9.8–13.5 mm (A = 10.7 mm; SD = 1.17 mm; N = 10). Body with same general coloration as male imago, however darker. Forewings: with two intercalary veins between MA1 and IMA, two intercalary veins between MA2 and MP1 veins, two intercalary veins between MP1 and IMP veins, two intercalary veins between IMP and MP2 veins, two intercalary veins between MP2 and CuA and two long ICu ( Fig. 8 ). Hindwings with IMP attached to MP2 ( Fig. 9 ).

Variation. Two long ICu veins in both forewings was the most common pattern observed ( Fig. 8 ). However, we found specimens with two or four intercalary ICu veins in both fore wings and individuals with four intercalary ICu vein in one forewing and five ICu vein in the other forewing.

Eggs. Unknown

Nymph. Unknown.

Etymology. The epithet " roraimense " refers to Roraima state, where is situated the type locality.

Material. HOLOTYPE: male imago, BRAZIL, Roraima State, Amajari municipality, Serra do Tepequém , second order stream (03°87'39.6"N / 61°44'49.8"W), 30.v.2009 to 3.vi.2009, Gama Neto, J.L. coll. ( INPA) . PARATYPES: same data as holotype, 9 male imagos (3 specimens in INPA, 6 specimens in CZNC) , 10 female imago, (5 specimens in INPA, 5 specimens in CZNC).

Figures

FIGURES 1 – 3. Campylocia roraimense sp nov., male imago in (1) dorsal and (2) lateral views; (3) detail of abdominal terga.

FIGURES 4 – 5. Campylocia roraimense sp nov., male imago, (4) Fore wing; (5) Hind wing.

FIGURES 6 – 7. Campylocia roraimense sp nov., male imago genitalia in (6) ventral and (7) lateral views.

FIGURES 8 – 9. Campylocia roraimense sp nov., female imago, (8) Fore wing; (9) Hind wing.