Parascatopse flavida Cook, 1955

Huerta, Herón & Ibáñez-Bernal, Sergio, 2008, New records of Scatopsidae (Diptera) from southeastern Mexico, and descriptions of new species of Swammerdamella Enderlein and Colobostema Enderlein, Zootaxa 1720, pp. 57-65 : 59-61

Parascatopse flavida Cook, 1955

( Figs. 9–10 )

Parascatopse flavida Cook, 1955:363 . Type-locality: Florida, USA. Reference: Cook, 1965: 239 (Nearctic catalogue).

Material examined. 5 males, 7 females. MEXICO: Yucatan, Ria Lagartos Reserve, Zac-bo, forest, 15-X- 1996, Malaise trap, (1 male); coastal dune, 18-III-1996, net, (1 female); Ría Celestun Reserve, near to DUMAC, mangrove, Malaise trap, 5-IX-1996, (2 females); near to Ecoparaiso, mangrove, Malaise trap, 28- III-1996, (4 males, 4 females); CNC, HH, PMS, RPR, cols.

Female. Total length ca. 1.64 mm; body yellowish brown. Head brown, holoptic, total head height 0.44 mm (including labella); eyes with interfacet pubescence; mouthparts pale; antenna length 0.27 mm, brown, with 8 flagellomeres; all flagellomeres with chaetic macrosetae; palpus length 0.068 mm, pale, with sensory pit at apex. Thorax brown; scutum and scutellum covered with dispersed setae without arrangement; 14–16 antepronotal setae, 13–14 proepisternals, 13 proepimerals, 22 spiracular sclerite setae, 8 anepisternals, 32–33 katepisternals, 8/9 mesepimerals, 30 merals, no subspiraculars, no supra-alars, and no pedicelars. Legs pale brown, in some specimens the tibiae are somewhat marked with narrow subapical brown rings. Wing length 1.05 mm, width 0.41 mm. Abdomen: terminalia as in Fig. 9 ; sternite 8 triangular; tergite 8 band shaped, with a pair of spiracles; segments 9+10 with a sclerotized tooth projection distally; vaginal furca with the shape of an inverted “V”; cerci long, main portion triangular in outline, with an external crease that ends in a hook-like apical proyection; sclerotized ovoid spermatheca with distort neck, apparent spermatheca not sclerotized.

Male. Terminalia as in Fig. 10 .

Comments. This species was originally described based on two male specimens. It is possible to recognize the species based on the male terminalia sclerites, in spite that they are very similar to those of Parascatopse sonorensis Cook , but possible to separate by the form of the tergite and sternite 7. Cook (1955: 363) mentioned that the female terminalia of P. w i r t h i Cook and P. sonorensis Cook are indistinguishable; the female of P. f l a v i d a Cook is different from those two species by the sclerotized projection with marginal teeth of segment 9+10.

The male and female were associated based on body coloration and quetotaxy. This species was known from Florida (the type locality) and from Mississippi, USA, being this the first record for Mexico.

Figures

FIGURES 6 – 9. Figs. 6 – 8: Colobostema hoffmannae sp. nov. Male. Fig. 6: Sternite 7, dorsal aspect. Fig. 7: Tergite 7, dorsal aspect. Fig. 8: Genitalia, ventral aspect. Fig. 9: Parascatopse flavida Cook, female genitalia, ventral aspect. Scales in millimeters.

FIGURES 10 – 13. Fig. 10: Parascatopse flavida Cook, male genitalia, ventral aspect. Fig. 11: Parascatopse sp., male genitalia, ventral aspect. Fig. 12: Thripomorpha chaboti Haenni & Rapp, male genitalia, ventral aspect. Fig. 13: Swammerdamella grogani sp. nov., male wing, dorsal aspect. Scales in millimeters.