Nandeva latiloba Saether et Roque

Andersen, Trond, Saether, Ole A. & Contreras-Ramos, Atilano, 2011, New species and records of Nandeva Wiedenbrug, Reiss et Fittkau (Chironomidae: Chironominae), Zootaxa 3136, pp. 45-60 : 53-55

Nandeva latiloba Saether et Roque

( Figs 17–21 )

Nandeva latiloba Saether et Roque, 2004: 65 .

Additional material. BRAZIL: São Paulo State, Ribeirão Grande, Parque Estadual Intervales; Barra Grande, 24o15'S, 48o10'W, 10 males, 10–13.xii.2000, Malaise trap Ponto B4, M.T. Tavares et al. ( PEIN 02: BIOTA- FAPESP) ( MZUSP); as above except 2 males, 13–16.xii.2000, Malaise trap trilha 1 ( PEIN 10: BIOTA-FAPESP); as above except 1 male, Malaise trap trilha 2 ( PEIN 07: BIOTA-FAPESP); as above except 1 male, Malaise trap trilha 4 ( PEIN 04: BIOTA-FAPESP); as above except 1 female, Malaise trap trilha 5 ( PEIN 05: BIOTA-FAPESP). São Paulo State, Salesópolis, Estação Biológica Boracéia, Trilha dos Pilões, 23o39'04.8''S, 45o53'41.8''W, 1 male, 3–5.iv.2001, Malaise trap trilha 3, S.T.P. Amarante et al. ( BORA 03: BIOTA-FAPESP); as above except 23o39'05.8''S, 45o53'44.6''W, 1 male, 30.iii. – 2.iv.2001, Malaise trap trilha 4 ( BORA 02: BIOTA-FAPESP). São Paulo State, Estação Ecológica Juréia-Itatins, Peruibe, 24o31'06''S, 47o12'06''W, 1 male, 6.v.2002, Malaise trap trilha 2, N.W. Perioto et al. ( PEJU 10: BIOTA-FAPESP). Rio de Janeiro State, Reserva Biológica Tinguá, Nova Iguaçu, 22o34'32''S, 43o26'07.6''W, 1 male, 8–11.iii. 2002, Malaise trap, S.T.P. Amarante et al. ( BRTIN 18: BIOTA- FAPESP). Paraná State, Parque Estadual do Pau Oco, Morretes, 3 males, 7–13.iv.2002, Malaise trap trilha 5, M.T. Tavares et al. ( BRPR: BIOTA-FAPESP). VENEZUELA: Falcón State, Rio Mitare near San Luis, 11o07.930'N, 69o39.184'W, 589 m a.s.l., 1 male, 7.vi.2001, light trap, R.W. Holzenthal et al.

Male. As in Saether and Roque (2004: 65) except that in a few specimens there may be up to 5 setae on vein M. Superior volsella is illustrated in Figure 21 .

The figure text in Saether and Roque (2004) is interchanged; Figure 8 should be N. strixinorum , Figure 9 should be N. latiloba .

Female (n = 1). Total length 1.56 mm. Wing length 0.82 mm. Total length / wing length 1.91. Wing length / length of profemur 2.28.

Color. Thorax with pale ground color and brown vittae, lower part of anterior anepisternum II, median anepisternum, anterior part of preepisternum and postnotum darker. Abdomen pale brownish with posterior one-quarter pale.

Head. AR 0.18. Length (in μm) of flagellomeres: 54, 49, 49, 41, 34. Sensilla chaeticae on flagellomeres 1 to 4 each 45 μm long. Temporal setae 13, including 6 frontals and inner verticals, 3 outer verticals and 4 postorbitals. Clypeus with 13 setae. Tentorium 79 μm long, 8 μm wide. Stipes 79 μm long, 19 μm wide. Palpomeres lost.

Thorax. Antepronotum with 3 dorsal and 3 lateral setae. Dorsocentrals 23, acrostichals 20, prealars 7. Scutellum with 12 setae.

Wing. VR 1.18. Brachiolum with 2 setae, Sc and An bare, R with 18 setae, R1 with 15, R4+5 with 30, M with 6, M1+2 with 38, M3+4 with 26, Cu with 23, Cu1 with 11, and postcubitus with 23 setae. Cell m3+4 with about 80 setae, m basally of RM with 30 setae. Squama with 2 setae.

Legs. Scale on fore tibia with 26 μm long apical point. Spurs of mid tibia 34 μm and 23 μm long including combs, of hind tibia 38 μm and 23 μm long including combs. Width at apex of fore tibia 26 μm, of mid tibia 26 μm, of hind tibia 23 μm. Lengths and proportions of leg segments as in Table 3.

fe ti ta1 ta2 ta3 ta4 ta5 LR BV SV BR p1 359 317 274 113 76 47 28 0.87 2.47 3.59 – p2 378 331 – – – – – – – – – p3 387 506 208 104 – – – – – – – Abdomen. Setae both of tergites and sternites arranged in basal, marginal and lateral setae, with those on tergites more irregular and those of sternites more numerous medially. Number of setae on tergites I–VIII as: 12, 30, 36, 36, 42, 39, 22, 20; on sternites I–VIII as: 0, 0, 18, 29, 37, 33, 27, 45.

Genitalia ( Figs 17–20 ). Gonocoxapodemes VIII forming well sclerotized complete circles, each encircling about 23 setae. Floor developed. Dorsomesal lobe wider than the long, ventrolateral lobe nearly straight with a few weak apical microtrichia. Gonocoxite with 5 setae. Tergite IX somewhat bluntly triangular with 18 setae. Postgenital plate sharply triangular. Cercus 49 µm long. Seminal capsule about 41 µm long, about 41 µm wide, spermathecal ducts with large bend but no loop, without bulbs before common opening. Notum 41 µm long.

Remarks. Although other species of Nandeva in addition to Nandeva latiloba are present in the same locality and date the association is ascertained by the low number of setae on wing vein M and the presence of frontals.

Distribution. The species previously was known only from São Paulo State in Brazil. The new material extends the distribution to Rio de Janeiro and Paraná states, as well as to Venezuela.

Figures

FIGURES 17 – 20. Nandeva latiloba Saether et Roque, female. 17 — genitalia, ventral aspect; 18 — genitalia, dorsal aspect; 19 — dorsomesal lobe; 20 — ventrolateral lobe.

FIGURES 21 – 25. Nandeva latiloba Saether et Roque (21), N. strixinorum Saether et Roque (22 – 24) and N. cf. tropica Wiedenbrug, Reiss et Fittkau (25), males. 22 — hypopygium, dorsal aspect; 23 — hypopygium with anal point and tergite IX removed, dorsal aspect to the left, ventral aspect to the right; 21, 24, 25 — superior volsella, dorsal view.

FIGURES 3 – 9. Nandeva digitifer sp. n., male. 3 — head; 4 — tentorium, stipes and cibarial pump; 5 — thorax; 6 — wing; 7 — hypopygium, dorsal aspect; 8 — hypopygium with anal point and tergite IX removed, dorsal aspect to the left, ventral aspect to the right; 9 — superior volsella, dorsal view.