Trichomyia bifurcata Araújo & Bravo, 2016

Araújo, Maíra Xavier & Bravo, Freddy, 2016, Description of fourty four new species, taxonomic notes and identification key to Neotropical Trichomyia Haliday in Curtis (Diptera: Psychodidae, Trichomyiinae), Zootaxa 4130 (1), pp. 1-76 : 37-38

Trichomyia bifurcata Araújo & Bravo sp. nov.

( Figs. 18A –G)

Diagnosis. M2 with base unsclerotized; r-m unsclerotized; two basal expansions on gonocoxite, the dorsal side expanded basally, with divergent apex; the ventral side with narrow tip, curved medially; arm of gonocoxite bifurcate with elongated bristles at apex; cercus terminally expanded with two apical setae.

Description. Male. Head subcircular in frontal view. Antenna incomplete in the studied specimens; scape subcylindrical; pedicel subspherical; flagellomeres pyriform and eccentric; ascoids 1.25 times as long as the length of flagellomere ( Fig. 18A ). Palpus three segmented; first segment with sensilla in depressed pit on medial surface; palpus formula 1.0:0.5:0.6 ( Fig. 18B ). Wing. R4+5 with base unsclerotized; M2 with base unsclerotized; r-m unsclerotized and m-cu absent ( Fig. 18C ). Male terminalia: Hypandrium and gonocoxites fused with two basal expansions, the dorsal side expanded basally, with divergent apex; the ventral side with narrow tip, curved medially ( Fig. 18D ). Arm of gonocoxite bifurcate with elongated bristles ( Fig. 18 G). Gonostylus slightly sclerotized, articulated ventrally to gonocoxite, near to the base, bare, subtriangular ( Figs. 18D, 18 G). Presence of one pair of triangular projections in the aedeagal complex. Aedeagus bifid (18G). Ejaculatory apodeme 0.8 times the length of gonostylus. Epandrium subquadrate. Cercus digitiform ( Figs. 18E, 18F ) with an expansion with two apical setae ( Fig. 18E ). Hypoproct with apical micropilosity ( Fig. 18F ).

Female. Unknown.

Material examined. Brazil, Pará, Santarém, Estrada para alter do Chão, Jurupari, Km1315, 25.XI.1998, holotype ♂, RF, RAN, FLS leg. ( MZFS); 16 paratypes: 5 ♂, Amazonas, Manacapuru, Cajatuba, km 69/3, 6.X.1998, without name of collector ( MZFS); 2 ♂, Amazonas, Presidente Figueiredo, Pitinga, 04.XII.1998, RQ, LMC leg. ( INPA); 3 ♂, Amazonas, Manacapuru, Cajatuba, km 69/3, 20.IV.1998, RQ, RN, PE ( INPA); 4 ♂, Amazonas, Manacapuru, Cajatuba, km 69/3, 13.X.1998, without name of collector ( MZFS); 1♂, Pará, Barbarena, Est. Caripi, Km4, 24.X.1997, without name of collector ( INPA); 1♂, Pará, Novo Repartimento, Vic. Bandeirante, Ramal dos Sem Terra, 27.VIII.1998, without name of collector ( MZFS).

Etymology. The epithet bifurcata is allusive to the large number of bifurcated structures (arm of gonocoxite, aedeagus)

Distribution. Brazil—Amazonas, Pará.

Figures

FIGURES 18 A – F. Trichomyia bifurcata sp. nov. A. Scape, pedicel and basal flagellomeres; B. Palpus; C. Right wing; D. Male terminalia, lateral; E. Cercus, in lateral view; F. Cerci, epandrium and hypropoct; G. Male terminalia, dorsal.