Paraleia fumosa, Oliveira, Sarah Siqueira & Amorim, Dalton De Souza, 2012

Oliveira, Sarah Siqueira & Amorim, Dalton De Souza, 2012, Six new species of Paraleia Tonnoir (Diptera, Mycetophilidae): amphinotic elements at the northern range of the Andes, Zootaxa 3186, pp. 1-24 : 6-12

Paraleia fumosa , sp. n.

( Figs. 1 , 5–6 , 16–17 )

Diagnosis. Two ocelli. Wings brown maculae rather inconspicuous, R5 straight. Gonostyle folded distally, with a single spine at apex and a subapical row of spines, gonocoxite projection distal to base of gonostyle with a distal and a ventral rows of spines.

Material examined. Holotype 3, ECUADOR, E. Papallacta (Quito/Baeza), 2,900 m, 12–15.i.1971 (L.E. Peña Col.) ( MZUSP). Paratypes: 13 2Ƥ COLOMBIA, State of Huilla, PNN Cueva de los Guácharos, Mun. Acevedo, 01°37’N 76°06’W, 2,150 m, 15–19.vi.2003, M3787 (J. Lopes leg.) (IAvH).

Description. Male. Head. Vertex brown, with scattered, whitish, longer bristles. Two ocelli close to but not touching eye margin, mid ocellus absent. Frons light brown, covered with setulae, clypeus light yellow; labella yellow, maxillary palpus whitish yellow, five palpomeres, last palpomere as long as penultimate, first two palpomeres short. Scape and pedicel of equal length, yellow, first flagellomere yellow on basal half, remaining flagellomeres brown. Thorax. Pronotum yellow, with four strong bristles. Scutum brown, yellow on anterior corners until the middle of scutum, as an anterior-posterior line. Scutellum yellow, four scutellar bristles. Mediotergite and lateral sclerites bare, brown. Pleural membranae yellow, bare. Haltere whitish, knob slightly brownish, setose. Legs yellow. Tibial spurs 1:2:2, spurs almost twice width of tibial apex. Some few dark apical setae on fore tibia, mid and hind tibiae with long, strong, black setae. Wing ( Fig. 5 ). Length, 4.2 mm, width, 1.2 mm. Membrane without macrotrichia, translucent, brown maculae rather inconspicuous across mid and apex of wing, a slightly darker area just posterior to A1. Sc-r present, not strongly sclerotized; C extending slightly beyond R5 apex; Sc complete, reaching C on distal third of wing. R1 shorter than r-m length, reaching C at distal third of wing; Rs transverse; R5 straight, reaching C close to wing apex; r-m almost longitudinal, about seven times Rs length. M1+2 shorter than r-m length; M1 and M2 more than twice length of M1+2; CuA slightly depressed midway to apex; A1 incomplete on distal third. M1, M2, M4, second sector of CuA and A1 setose. Abdomen. Abdomen pubescent. Tergites 1–7 brown, tergites 2–4 with a yellowish distal band; sternites 1–4 yellow, sternite 5 yellow on the basal half, brownish distally, sternites 6– 7 brown. Terminalia yellowish on basal half, brownish apically. Terminalia ( Fig. 16 ). Gonocoxite yellow, with brown margins, extending beyond base of gonostyle, with a row of short spines along distal margin, an additional transverse row of short spines ventrally, and one long spine at apex; gonostyle long, with a distal fold inwards, a row of short spines ventrally close to apex and a single, long spine at apex; aedeagus thin, long, bifid since its base, with small setulae apically; parameres well developed, more sclerotized apically, involving the aedeagus; cercus covered with setulae; tergite 9 less sclerotized, short mesal projection along distal margin.

Female ( Fig. 1 ). As male, except as follows. Wing ( Fig. 6 ). Length, 4.6 mm, width, 1.4 mm. R-m six times length of Rs first sector. Abdominal tergites 2–5 with apical yellow band; sternites 1–6 yellow, lateral margins brownish, sternite 7 brownish. Terminalia ( Fig. 17 ). Terminalia brownish, distal margin of sternite 8 rounded, with a fringe of brown, long setae; cercus almost as long as rest of terminalia, basal cercomere longer than apical one.

Etymology. The specific epithet is Latin adjective fumosus, meaning smoky, in reference to the weakly defined, light wing maculae.

Comments. The holotype wing has the base of vein M1 nearly separated from M1+2, but is otherwise identical to the females. R 5 in all specimens analyzed is particularly straight. The general body coloration of this species is quite similar to P. p e r u v i a n a Edwards, known from Mamara, Peru. In the Edwards original description of P. p e r u v i - ana there are no illustrations of male and female terminalias, but it is possible at this moment to note some differences in the wing maculation. In P. f u m o s a sp. n., the wing membrane shows very weak maculae across medial veins and at anal cell ( Figs. 5, 6 ) and the CuA is not sinuous. On the other hand, in P. peruviana the wing membrane is maculated at the medial veins; stronger on the first section of Rs, apex of R5, and anal cell; and the CuA is slightly sinuous.

Figures

FIGURE 1. Habitus. Female paratype of Paraleia fumosa sp. n., lateral view. Scale 1 mm.

FIGURE 16. Male terminalia of Paraleia fumosa sp. n., ventral view. Holotype. Scale 0.1 mm.

FIGURE 17. Female terminalia of Paraleia fumosa sp. n., lateral view. Paratype. Scale 0.1 mm.

FIGURES 3 – 12. Wings of Paraleia. 3. Paraleia bolivari sp. n., male paratype. 4. Paraleia bolivari sp. n., female paratype. 5. Paraleia fumosa sp. n., male paratype. 6. Paraleia fumosa sp. n., female paratype. 7. Paraleia denticulata sp. n., male paratype. 8. Paraleia denticulata sp. n., female paratype. 9. Paraleia tonnoiri sp. n., male holotype. 10. Paraleia nidorosa sp. n., female holotype. 11. Paraleia sharkeyi sp. n., female paratype. 12. Paraleia sp., female paratype. Scale 0.5 mm.