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

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Stomopogon albiseta ( Stein, 1911 )


Stomopogon albiseta ( Stein, 1911) 

( Figs 3View FIGURE 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. 9DView FIGURE 9)  . 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.


Head ( Fig. 9BView FIGURE 9). 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, CView FIGURE 9). 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. 9AView FIGURE 9). 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. 9CView FIGURE 9). Black, with many long white setae on all tergites. Sternite 5 U-shaped, covered with median to short setae ( Fig. 3AView FIGURE 3).

Terminalia  ( Fig. 3View FIGURE 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).

NEOTROPICAL STOMOPOGON  : NEW SPECIES, REDESCRIPTIONS & KEY Zootaxa 4903 (3) © 2021 Magnolia Press · 305


Zoologisches Museum der Humboldt Universitaet


University of Newcastle