Stomopogon albiseta ( Stein, 1911 )

Fogaça, João M., Gomes, Lucas R. P., Couri, Márcia S., Rodríguez-Fernandez, Jaime I. & De Carvalho, Claudio J. B., 2021, Neotropical Stomopogon (Diptera, Muscidae): new species, redescriptions and key to species, Zootaxa 4903 (3), pp. 301-330 : 304-305

Stomopogon albiseta ( Stein, 1911)

( Figs 3 A–C, 9A–D)

Type-material examined. Lectotype. Male: “ Bolivia - Guaqui \ 02. vi. 03 \ Titicaca See [green, printed label and partially handwritten, 03 = 1903]”; “ LECTOTYPE ♁ \ Coenosia \ albiseta \ Stein, 1911 \ Des. A. C. Pont 1999 [white printed label]” ( SMT) ( Fig. 9D ) . Paralectotypes: 3♁. Same data as Lectotype, 1♁ ( ZMHU) . Peru, Calca , 6. viii. 1903, 1♁ ( SMT) , Laristhal , 3–4000 m, 8. viii. 1903, 1♁ ( SMT) .

Additional material examined. Bolívia, Guaqui, Titicaca , 4-5000m, 02. vi. 1903 , 2♁; Titicaca – Insel, 02. vi. 1903 , 1♁; Sorata , 2300m, 18. xii. 1902 , 1♁; La paz, 30. xi. 1902 . Peru, Calca , 06. viii. 1903 , 2♁; Cuzco, 3700–4000m, 17. vi. 1905 , 1♁ ( SMT).

Diagnosis. Stomopogon albiseta can be separated from other species by having the entire body covered with many white setae and first hind tarsomere flattened. In addition, it differs from S. hirtitibia , S. paranaensis sp. nov. and S. nigrisquama sp. nov. by the yellow tibiae, and from S. capribarba , S. argentina , S. inculta and S. boliviensis sp. nov. by the yellow postpedicel.

Redescription

Head ( Fig. 9B ). Frontal vitta, fronto-orbital plate, face, parafacial and gena dense silvery pruinose. Eye with small and sparse white cilia, distance between eyes 0.31 of maximum head-width. Antenna silvery pruinose, inserted above middle of eyes; postpedicel yellow, about 1.5 times pedicel length. Arista a little enlarged at base with hairs shorter than diameter of the base, apical third bare. 5 white frontal pairs of setae; 1 proclinate orbital seta; 1 upper orbital seta; ocellar seta well developed; postocellar seta divergent and with the same ocellar seta length; inner vertical seta parallel, similar in size with ocellar seta; outer vertical seta white, divergent similar in size with inner vertical setae. Proboscis shiny dark brown. Palpus brown and filiform.

Thorax ( Fig. 9A, C ). Acrostichal setae 4+4, hair-like; intra-alar setae 1+2, the second postsutural white and smaller than other; 2 notopleural setae, the second white; 6 anepisternal setae, 5 white and 1 black.

Legs ( Fig. 9A ). Black, only knees, tibiae and tarsi yellowish. Claws and pulvilli reduced. Fore femur with a complete pd row of black and long setae; p and pv complete rows of white and long setae. Fore tibia with 1 pv median short and white seta; 1 d and 1 pv apical seta. Mid femur with an a row with 6 medium-sized black setae; av and pv complete rows of long and white setae; 1 p seta on apical half. Mid tibia with 1 p median seta; apical seta on d, pv, v and av. Hind femur with an ad complete row of long setae; 2 anterior long setae on apical half; av complete row of long, white and black setae; 1 av and 1 pv seta on apical half; 1 d and 1 pd seta on apical half. Hind tibia on a to p with many long setae, the 6 ad, 3 d and 6 pd stronger than the others; 1 preapical setae on each ad, d, pd and av, all well developed.

Abdomen ( Fig. 9C ). Black, with many long white setae on all tergites. Sternite 5 U-shaped, covered with median to short setae ( Fig. 3A ).

Terminalia ( Fig. 3 B–C). Cercus longer than wide, apically deep bifurcate, covered with sparse setae; hypandrium long tubular; phallapodeme similar length with hypandrium; pregonite and postgonite similar in length, postgonite bare.

Female. Not examined.

Distribution. Argentina (Tucumán), Bolivia (La Paz) and Peru (Calca, Cuzco).

Figures

FIGURE 3. Stomopogon albiseta (Stein, 1911), male: A. Sternite 5, ventral view. B. Epandrium, cercus and surstyli, dorsal view. C. Epandrium, cercus, surstyli, hypandrium and phallic complex, lateral view. Stomopogon argentina Snyder, 1957, male: D. Sternite 5, ventral view. E. Epandrium, cercus and surstyli, dorsal view. F. Epandrium, cercus, surstyli, hypandrium and phallic complex, lateral view. Stomopogon boliviensis sp. nov., male: G. Sternite 5, ventral view. H. Epandrium, cercus and surstyli, dorsal view. I. Epandrium, cercus, surstyli, hypandrium and phallic complex, lateral view. Scale bars: 0.1 mm.

FIGURE 9. Stomopogon albiseta (Stein, 1911), lectotype male: A. Lateral view. B. Head, frontal view. C. Dorsal view. D. Labels. Scale bars: A: 2mm; B: 0.5mm and C: 1mm.