Trichomyia menezesi, Araújo & Dos Santos & Bravo & de Carvalho, 2017

Araújo, Maíra Xavier, Dos Santos, Claudiney Biral, Bravo, Freddy & de Carvalho, Claudio J. B., 2017, Four new species of the genus Trichomyia - subgenus Septemtrichomyia Bravo (Diptera: Psychodidae: Trichomyiinae) from Brazil, Journal of Natural History 51 (29 - 30), pp. 1713-1725 : 1721-1724

Trichomyia menezesi sp. nov.

( Figure 5 (a–i))

Diagnosis

Elongate bristles on tergum VII with straight apices. Gonocoxite posterior arm with apex wide, apically pilose with row of eight small, rod-like setae. One pair of lanciform parameres present, curved and sclerotised. Ejaculatory apodeme of the same length as the gonostylus.

Description

Adult male. Head subcircular ( Figure 5 (a)). Antenna incomplete in studied specimens; scape longer than pedicel; scape subcylindrical and pedicel subspherical; basal flagellomeres pyriform and eccentric; ascoids lost in the specimen studied ( Figure 5 (e)). Palpus three-segmented; first segment with sensilla in depressed pit on inner side; palpus formula 1.0:0.4:0.6 ( Figure 5 (c)). Wing ( Figure 5 (b)): Sc complete; R4 + 5 complete at base; r-m and m-cu absent. Elongate bristles on tergum VII with straight apices, lost in holotype ( Figure 5 (h,i)). Male terminalia: Hypandrium fused with gonocoxite. Gonocoxite with posterior arm curved to the midline, apex wide, apically pilose with row of eight small, rod-like setae. Gonostylus digitiform with rounded apex. One pair of parameres, in dorsal view lanciform, curved and sclerotised. Aedeagus bifid and convergent. Ejaculatory apodeme of the same length as the gonostylus ( Figure 5 (g)). Epandrium pilose, longer than wide, trapezoidal ( Figure 5 (f)). Cercus pilose, droplet shaped in ventral view, dorsolaterally with row of long bristles ( Figure 5 (d)). Hypoproct with rounded apex and apical micropilosity ( Figure 5 (f)).

Material examined

Holotype ♂, BRAZIL, Espírito Santo, Aracruz (Reserva Biológica Aricanga), 9–11 January 2008, G. R. Leite leg. ( MZFS); 2 paratypes ♂, same locality, date and collector as holotype ( MZFS).

Distribution

Brazil (Espírito Santo).

Etymology

In honour of Eliomar da Cruz Menezes for his help in this study and collecting Psychodidae .

Remarks

Trichomyia menezesi is similar to T. cauga Bravo, 1999 and T. amazonensis in possessing a wide cercus and a row of rod-like setae on the gonostylus. However, the aedeagal apodeme is wider in T. cauga than in the other species of subgenus, and the hypoproct is narrower apically in T. cauga and T amazonensis . The three species can also be distinguished on the number of rod-like setae on the gonostylus, with T. menezesi having eight, T. cauga six and T. amazonensis nine setae.

Key to males of Trichomyia (Septemtrichomyia) (modified from Araújo and Bravo 2012)

1. Group of elongate bristles on tergum VII with straight apices ( Figure 2 (a)) ......... 2

– Group of elongate bristles on tergum VII with curved apices ( Figures 2 (f) and 4 (d)) ................................................................................................................................................... 9

2. Apex of gonocoxite arm with three hairs ( Wagner 1993, fig. 10) ..................................... ......................................................................................................... T. botosaneanui Wagner, 1993

– Apex of gonocoxite arm with more than three hairs, or rod-like setae ( Figures 2 (f) and 5(g)) ............................................................................................................................................... 3

3. Gonocoxite arm with spine-like projection at base ( Araújo and Bravo 2012, fig. 17) .................................................................................................... T. sertaneja Araújo & Bravo, 2012

– Gonocoxite arm without spine-like projection at base ................................................... 4

4. Apex of gonocoxite with hairs irregularly distributed ( Figure 2 (f)) ..................................... ............................................................................................................................... T. capixaba sp. nov.

– Apex of gonocoxite with a row of rod-like setae .............................................................. 5

5. Row of rod-like setae on external margin of apex of gonocoxite ( Araújo and Bravo 2012, figs. 31, 38) ............................................................................................................................. 6

– Row of rod-like setae on internal margin of apex of gonocoxite ( Figure 5 (g)) .... 8

6. Terminalia with one pair of parameres ( Araújo and Bravo 2012, fig. 31) ...................... ...................................................................................... T. amazonensis Araújo and Bravo, 2012

– Terminalia with two pairs of parameres ( Araújo and Bravo 2012, fig. 38) ............. 7

7. Ejaculatory apodeme long, 4.0 times as long as gonostylus ( Araújo and Bravo 2012, fig. 38) ......................................... ......................................... T. imarui Araújo and Bravo, 2012

– Ejaculatory apodeme short, 0.5 times as long as gonostylus ( Bravo 2001, fig. 28) ... ..................................................................................................... T. pedrabranquensis Bravo, 2001

8. Parameres pyriform, ejaculatory apodeme narrow in dorsal view ( Bravo 1999, fig. 24) .......................................................... .......................................................... T. mishi Bravo, 1999

– Parameres triangular, ejaculatory apodeme wide in dorsal view ( Figure 5 (g)) ............ .............................................................................................................................. T. menezesi sp. nov.

9. Gonocoxites with two dorsal appendages, basal one shorter and angular, distal one elongated and straight ( Wagner and Masteller 1996, fig. 22) ................................... ................................................................................. T. sattelmairi Wagner and Masteller, 1996

– Gonocoxites without two dorsal appendages ................................................................... 10

10. Parameres with medial lobe ( Bravo 1999, figs. 4, 5) ...................... T. bou Bravo, 1999

– Parameres without medial lobe ............................................................................................... 11

11. R 4+5 and R2 subequal in length ............................................................................................... 12

– R 4+5 about 1.5 times R2 length ................................................................................................ 16

12. Apex of gonocoxite arm with a row of rod-like setae ................................................... 13

– Apex of gonocoxite arm with simple setae ........................................................................ 15

13. Parameres absent ( Alexander et al. 2001, fig. 2) ....................................................................... ............................................................. T. dolichopogon Alexander, Freitas and Quate, 2001

– Parameres present ......................................................................................................................... 14

14. One pair of parameres ( Figure 4 (h)) .................................................... T. gustavoi sp. nov.

– Two pairs of parameres ( Figure 3 (j)) ............................ ............................ T. gabia sp. nov.

15. Ejaculatory apodeme long, 2.5 times as long as gonostylus ( Araújo and Bravo 2012, figs 25, 26) ............................................................................ T. jezeki Araújo and Bravo, 2012

– Ejaculatory apodeme short, 0.7 times as long as gonostylus ( Quate 1996, fig. 4c)... ................................................................................................................... T. dolichakis Quate, 1996

16. Parameres triangular in dorsal view ( Bravo 1999, fig. 13) ...... T. cauga Bravo, 1999

– Parameres not triangular in dorsal view, elongated ....................................................... 17

17. Ejaculatory apodeme short, 0.7 times parameres length ( Quate 1999, fig. 1F) ........... ................................................................................................................ T. dolichothrix Quate, 1999

– Ejaculatory apodeme long, 1.7 times parameres length ( Araújo and Bravo 2012, fig. 5) ........................................................................................ T. atlantica Araújo and Bravo, 2012 .

Figures

Figure 2. (a–j) Trichomyia capixaba sp. nov. (a) Head; (b) right wing; (c) last flagellomere; (d) palpus; (e) cerci, epandrium, hypoproct; (f) male terminalia, dorsal; (g) scape, pedicel and basal flagellomeres; (h) male terminalia, lateral; (i) cercus, in dorsal view; (j) tergum VII. Abbreviations: aed = aedeagus, agx = arm of gonocoxite, ap = apiculus, cer = cercus, ep = epandrium, gst = gonostylus, hyp = hypoproct, pm = paramere, tgVII = tergum VII.

Figure 3. (a–k) Trichomyia gabia sp. nov. (a) Head; (b) right wing; (c) arm of gonocoxite, in ventral view; (d) palpus; (e) male terminalia, lateral; (f) tergum VII; (g) cercus, in lateral view; (h) scape, pedicel and basal flagellomeres; (i) cerci, epandrium, hypoproct; (j) male terminalia, dorsal; (k) aedeagus and parameres. Abbreviations: aed = aedeagus, agx = arm of gonocoxite, cer = cercus, ep = epandrium, gst = gonostylus, hyp = hypoproct, pmd = dorsal paramere, pmv = ventral paramere, tgVII = tergum VII.

Figure 4. (a–i) Trichomyia gustavoi sp. nov. (a) Head; (b) right wing; (c) palpus; (d) tergum VII; (e) male terminalia, lateral; (f) cercus, in dorsal view; (g) scape, pedicel and basal flagellomeres; (h) male terminalia, dorsal; (i) cerci, epandrium, hypoproct. Abbreviations: agx = arm of gonocoxite, cer = cercus, ep = epandrium, gst = gonostylus, pm = paramere.

Figure 5. (a–i) Trichomyia menezesi sp. nov. (a) Head; (b) right wing; (c) palpus; (d) cercus, in dorsal view; (e) scape, pedicel and basal flagellomeres; (f) cerci, epandrium, hypoproct; (g) male terminalia, dorsal; (h) tergum VII; (i) bristles of tergum VII (paratype). Abbreviations: aed = aedeagus, agx = arm of gonocoxite, cer = cercus, ep = epandrium, gst = gonostylus, pm = paramere.