Paggipelopia spaccesii, Siri & Donato, 2015

Siri, Augusto & Donato, Mariano, 2015, Phylogenetic analysis of the tribe Macropelopiini (Chironomidae: Tanypodinae): adjusting homoplasies, Zoological Journal of the Linnean Society 174 (1), pp. 74-92 : 86

PAGGIPELOPIA SPACCESII GEN. ET SP. NOV.

Etymology

Named in honor of Fernando Spaccesi, our friend and an invaluable collaborator in the fieldwork.

Diagnosis

See generic diagnosis.

Type material (all deposited at MLP, except when otherwise stated)

Holotype: Adult ♂ with larval and pupal exuviae, Argentina, Buenos Aires Province, Sierra de la Ventana, Parque Provincial E. Torquinst, unnamed stream at the piedemont of the Bahía Blanca hill, 38°04′06.3″S, 61°58′28.15″W, 468 m a.s.l., 4.X.2013, D- net, M. Donato, A. Siri & F. Spaccesi.

Paratypes: One adult ♂, same data as holotype ; three adult ♂ and two adult ♀, same data as holotype except for 10.XII.2010 ; one adult ♂, same data as holotype except for 2–4.XI.2011 , light trap; one larva (NHM) and one adult ♂, same data as holotype except for 20. V.2012 , light trap. Two larvae and one prepupa, Argentina, Buenos Aires Province, Sierra de la Ventana, Parque Provincial E. Torquinst , Ventana stream, 38°03′42.4″S, 62°01′21.4″W, 518 m a.s.l., 21. V.2011 ; two larvae and one pupae, 5.XI.2011, D- net, M. Donato, A. Siri & F. Spaccesi. One adult ♂ with its pupal exuviae, Argentina, Buenos Aires Province, Sierra de la Ventana, Parque Provincial E. Torquinst , Cueva del Toro stream, 38°01′19.0″S, 62°01′33.3″W, 672 m a.s.l., 1. VI.2013 , D- net, M. Donato, A. Siri & F. Spaccesi. One adult ♂ with the pupal exuviae, Argentina, Chubut Province, Valle Chico stream, 42°55′40.0″S, 71°15′58.0″W, 29. VIII.2012 , hand net, D. Anjos Santos & P. Pessaq (NHM). One pharate ♀, Argentina, Chubut Province, Puerto Patriada, 18.X.2012 , hand net, D. Anjos Santos & P. Pessaq. Three pupal exuviae, Argentina, Tierra del Fuego Province, Ruta Complementaria B, 53°54′06.0″S, 67°55′56.3″W, 61 m . a.s.l., 5.XII.2005, drift net, M. Donato. Three adult ♂, one adult male with its pupal exuviae, Argentina, Rio Negro Province, Rincón de Comicó , 41°08′33.8″S, 67°27′36.0″W, 1000 m a.s.l., light trap and hand net, respectively, M. Donato, G. Rossi, and G. Spinelli .

Description

Male (N = 8–12, except when otherwise stated in parentheses; Fig. 2A–D )

Total length 4.95–6.58 (4.95) mm. Total length/wing length 1.70–1.82 (1.82).

Coloration: Thorax brown to dark brown, without evident vittae. Abdomen ( Fig. 2A ): tergites II–IV with brown lateromedial bands and an ovoid central spot, tergite V similar to tergites II–IV but generally darker, tergites VI–IX and hypopygium completely brown.

Wing with spots on the apex and on the r 4+5 cell membrane. Dark marks present on the base of the squama, on RM, FR, FCu, and on the apex of An ( Fig. 2B ).

Head: Antenna, antennal ratio (AR) 1.6–1.8 (1.73). Temporals bi- to multiserial 40–50 (48); postorbitals biserial, 12–18 (18). Clypeus with 9–20 (13) setae. Tentorium 220–300 (220) long. Palpomere lengths (1–5) 70–75 (70); 110–130 (120); 180–220 (180); 210–280 (210); 350– 490 (370).

Thorax: Antepronotum with between seven and 11 (10) lateral setae, with a tubercle between antepronotal setae; acrostichals 40 (1); prescutelar area with three or four setae on each side; dorsocentrals 22–37 (24); prealars 17–29 (17); supraalar 1; scutellars 23–40 (23); preepisternals 3–7 (4); anepisternals 0–1 (1); postnotum with two or three (three) setae.

Wing: Length 2.71–3.66 (2.71) mm; width 0.80–1.02 (0.80) mm. L/ W 3.39 –3.78 (3.39). Costa extended 180– 220 (220) beyond R 4+5. Brachiolum with between three and seven (three) distal setae, plus between two and five (three) proximal setae. Squama fringed with 36– 54 (38) setae.

Legs: Foreleg: tibial spur 75–93 (75) long; comb with at least 12 short spines. Midleg: tibial spurs 80–110 (83) and 63–80 (63) long; four or five (four) sensilla chaetica on tarsomere 1. Hindleg: tibial spurs 83–110 (83) and 63–80 (63) long; comb with 10–14 (12) spines. Lengths and proportions of legs in Table 3.

Hypopygium ( Fig. 2C–D ). Setae on tergite IX, 28– 39 (28). Gonocoxite 220–280 (220) long; inferior volsella well developed. Gonostylus 115–160 (115) long,

Figures

Figure 2. Paggipelopia spaccesii gen. et sp. nov., adults. A–D, Male. A, abdomen in dorsal view; B, wing, borders and veins lined over electronically; C, hypopygium in dorsal view; D, drawing of hypopygium in dorsal (left) and ventral (right) view. E–G, Female. E, antenna; F, wing, borders and veins lined over; G, genitalia. Scale bars = 200 μm; except C,D = 50 μm.