Monopelopia caraguata, Mendes, Humberto Fonseca, Marcondes, Carlos Brisola & Pinho, Luiz Carlos De, 2003

Mendes, Humberto Fonseca, Marcondes, Carlos Brisola & Pinho, Luiz Carlos De, 2003, A new phytotelmatic species of Monopelopia Fittkau, 1962 (Insecta: Diptera: Chironomidae: Tanypodinae) from South Brazil, Zootaxa 262, pp. 1-10 : 3-7

Monopelopia caraguata sp. n.

Type material: Holotype: male with pupal exuviae ( MZUSP) Brazil, Santa Catarina State, Florianópolis ( UCAD), in Vriesea vagans (Smith) , 6.iv.2002, C.B. Marcondes & L.C. Pinho leg. . Paratypes: 1 male with larval and pupal exuviae, same data as holotype except for Nidularium innocentii Lemaire , 8.xi.2002; 1 male with pupal exuviae, same data as holotype except for Vriesea philippocoburgii Wawra , 11.iv.2002; 1 male with pupal exuviae, same data as holotype except for Hohenbergia augusta (Velloso) , 15.iv.2002; 1 male with pupal exuviae, same data as holotype except for Nidularium innocentii , 09.v.2002; 1 female; with larval and pupal exuviae: same data as holotype except for Aechmea nudicaulis (Linne) , 27.viii.2002. 1 female; with larval and pupal exuviae: same data as holotype except for Nidularium innocentii , 15.iv.2002.

Additional material ascribed to this species: 2 female with pupal exuviae ( Nidularium innocentii , Vriesea gigantea ); 2 pupal exuviae associated with larval exuviae ( Nidularium innocentii , Vriesea gigantea ).

Diagnostic characters: Male adult. The combination of T I­V with a broad oral brown band; T VI brown, T VII and VIII brown with an anal pale band; genitalia brown; 3 strong pale bristles on the second palpomere; TIX with 4­5 setae on each side. Pupa. The combination of genital sac longer than anal lobe; plastron plate elongated and reaching at least one third of the total length of the thoracic horn; pupal exuviae uniformly dark brownish, 4 lateral setae on segment VIII. Larva. The combination of AR 3.08, no dark claws on the posterior parapod and 5 teeth on the inner margin of the smallest claw of the posterior parapod, will distinguish this species among all other Monopelopia species.

Etymology: From Tupy, a native Brazilian language, caraguatá = bromeliad, referring to where the species was collected. Noun in apposition.

Male imago (n=4 otherwise when stated). Total length 2.08­2.15, 2.11 mm. Wing length 1.22­1.39, 1.31 mm. Total length/wing length 1.54­1.70, 1.61. Wing length/ length of profemur 2.04 (1).

Coloration. Head, eyes and pedicel brown, antenna pale. Thorax with dark brown dorsum and postnotum, dark brown spots on anterior anepisternum and median anepisternum, scutellum pale. Wings with pale brown macrotrichia. Legs light brown. Abdomen, T I­V with a broad oral brown band; T VI brown, T VII and VIII brown with an anal pale band; genitalia brown.

Head. AR 1.03­1.05, 1.04 (3), ultimate flagellomere 348­424, 386, apical flagellomere totally off­set. Temporal setae 12­16, 14, Clypeus with 16­21, 18 setae. Tentorium 139­ 144, 141 long, 38­40, 39 wide at largest part; stipes not measurable. Palpomere lengths 1­ 5: 30, 51, 129/141 (2), 144/157 (2) and 202 (1). Palpomere 2 with 3 long pale preapical setae, longest 81.

Thorax ( Fig 1 ). Antepronotum with 2­3, 2 setae. Dorsocentrals 21­25, 23, acrostichals 25­32, 28, biserial, all starting close to the anterior end; prealars 7­10, 9. Scutellum with 10 setae.

Wing ( Fig 2 ). VR 0.87­1.00, 0.95. Brachiolum with 3 setae, one long and two others smaller (about 109 long.). Squama with 12­13, 13 setae.

Legs (1). Spur of front tibia 45 long, spur of middle tibia 33, of hind tibia 56. Width at apex of front tibia 45, middle tibia 43, of hind tibia 38. Hind tibial comb with 5 setae, shortest seta 30 long, longest seta 43. Lengths and proportions of legs:

Hypopygium ( Fig 3 ) (1). Anal point 45 long; tergite IX with 4­5, 4 setae on each side. Gonocoxite 164 long. Gonostylus 104 long, megaseta 10 long. HR 1.58, HV 2.00.

Female imago (n=1). Total length 1.37 mm. Wing length 1.12 mm. Total length/wing length 1.23. Wing length/ length of profemur 2.44.

Coloration. Head, eyes and pedicel brown, antenna pale. Thorax with dark brown dorsum and postnotum, dark brown spots on anterior anepisternum and median anepisternum, scutellum pale. Wings with pale brown macrotrichia. Legs light brown. Abdomen pale without any distinct darker bands.

Head. AR 0.19, ultimate flagellomere 80. Temporal setae 12, Clypeus with 18 setae. Cibarium 182 long. Palpomere lengths 1­5: 30, 51, 124, 159 and 245. Palpomere 2 with 2/ 3 long, pale, preapical setae.

Thorax. Antepronotum with 3 setae. Dorsocentrals 30, acrostichals 32, triserial anteriorly and biserial posteriorly, starting close to the anterior end; prealars 3. Scutellum with 10 setae.

Wing. VR 0.86. Brachiolum with 3 setae, one long and two others smaller. Squama with 10 setae.

Legs. Spur of front tibia 38, spur of middle tibia 45, of hind tibia 58. Width at apex of front tibia 38, middle tibia 38, of hind tibia 43. Hind tibial comb with 4 setae, shortest seta 30, longest seta 41. Lengths and proportions of legs:

Genitalia ( Fig 4 ) Notum length (from bifurcation forward) 207; seminal capsules spherical, 46 in diameter; cerci small, 51 long, width at tip, 13; with 4 setae. Gonocoxite IX with 16 setae, 53 long. Tergite IX with 205 long, maximum width, 28, width at middle, 13. Coxosternapodeme maximum width 10.

Pupa (1) 1.82 mm long. Color brownish.

Cephalothorax. Supralar seta 38 µm long. Dc1 33, Dc2 51, distance Dc1­Dc2 207. Thorax and wing sheath smooth, wing sheath 800 long. Thoracic horn 300 long ( Fig. 6 ), maximum width 25, apex with a spine­like projection.

Abdomen. Tergite I ( Fig. 5 ) and sternite I without shagreen, tergites and sternites II­IX with shagreen. Setation of tergites as in diagnosis in Fittkau & Murray (1986) ( Fig. 8 ). T VII with 4 lateral setae, T VIII with 5 lateral setae. Anal lobe as in fig. 7, 257 µm long. Genital sac overreaching anal lobe in 38 µm. Anal macrosetae not measurable.

Larva (n = 1) – fourth instar exuviae­ Head pale yellow and body transparent, posterior parapod claws all pale yellow.

Head: Head length 546; width 451. Antenna. Segment I 217 long, ring organ 116 from the base; segment II 71 µm long, blade length 73; AR 3.08­3.18. Maxillary palp 56 long, 11 wide ( Fig. 10 ); length of antennal segment II/ length of the maxillary palp 1.27. Mandible length 131. Pseudoradula approximately 66 long. Ligula 63 long and maximum width 38; paraligula 30 long ( Fig. 9 ). Pecten hypopharyngis with 5­7 teeth. Dorsal head capsule setae as M. mikeschwartzi .

Body: Procerci 81 long, 20 wide. Anal tubules not measurable. Posterior parapod with large claws with fine inner and outer teeth; two smaller claws with 5 inner teeth ( Fig. 11 ).

Figures

FIGURE 8: Monopelopia caraguata sp. n. pupa: abdominal tergites.

FIGURES 1 ­ 4: Monopelopia caraguata sp. n. imagines: 1 ­ 3 male adult. 1 thorax; 2 wing; and 3 hypopygium, right dorsal and left ventral (microtrichia omitted); 4 female genitalia.

FIGURES 5 ­ 7: Monopelopia caraguata sp. n. pupa: 5 thoracic horn; 6 Tergite I; 7 anal lobe and genital sacs; and 8 abdominal tergites.

FIGURES 9 ­ 11: Monopelopia caraguata sp. n. larva: 9 ligula and paraligula; 10 maxilla and 11 posterior parapod claw.