Platyplastinx exiguus, Lopes, Priscila Silva & Bravo, Freddy, 2015

Lopes, Priscila Silva & Bravo, Freddy, 2015, Review of Platyplastinx Enderlein, 1937 (Diptera, Psychodidae) with descriptions of four new species, Zootaxa 4048 (4), pp. 583-593 : 589-590

Platyplastinx exiguus sp. nov.

( Figs. 5A–B ; 6A–E)

Type material. Holotype [adult male]: BRAZIL, Amazonas, Manaus, Reserva Ducke, Igarapé Ipiranga, IV.2003, Ribeiro, J. M. F., (Malaise trap) ( MZFS). Paratype. Male, same data as holotype ( INPA).

Diagnosis. Adult. Ejaculatory apodeme semicircular in dorsal view; aedeagus long and finger-like, 1.7 times the length of the ejaculatory apodeme; paramere slightly longer than aedeagus, with the apical region membranous; cercus with one apical feathered tenaculum and 2 rod-like accessory tenacula; hypoproct triangular, with blunt apex.

Description. Adult Male: Eyes separated by approximately one facet diameter; interocular suture with inverted V-shape in the holotype, and an inverted U-shape in the paratype; eye bridge with 4 facet rows. Antenna incomplete. Ratios of palpus segments 10:20:20:26. Wing slightly infuscate, with small clear areas between the vein tips, and dark spots on vein tips R1, R2, R3, R4, CuA1, CuA2, base of R5, and radial fork; radial fork more basal than medial fork. Hypandrium not visible, probably absent; gonostylus 3 times the length of gonocoxite, almost straight, ending at approximately the same level as the aedeagus; ejaculatory apodeme semicircular; aedeagus fingerlike, long, 1.7 times the length of ejaculatory apodeme; paramere slightly longer and wider than aedeagus, with the apical region membranous; epandrium wider than long, with bristles distributed near the apical margin; cercus with one apical feathered tenaculum, and 2 short, rod-like accessory tenacula near the apical tenaculum; hypoproct triangular, with blunt apex, and microtrichia along its entire length.

FIGURE 6A–E. Platyplastinx exiguus sp. nov., male holotype: A. Scape, pedicel and first two flagellomeres; B. first three segments of the palpus; C. 4th segment of the palpus; D. Terminalia dorsoventral view; E. Terminalia ventral view. Scale: 100 µm.

Adult Female. Unknown.

Distribution. Know only from the type locality.

Etymology. The specific epithet refers to the reduced number of accessory tenacula.

Comments. P. exiguus shares some common characteristics of its male terminalia with P. amazonensis sp. nov. and P. apodastos , although the latter two species can be easily differentiated from the first by other characters cited in the discussion of P. amazonensis .

Figures

FIGURE 5 A – B. Platyplastinx exiguus sp. nov., male holotype: A. Head; B. Wing. Scale: 100 µm (fig. 5 A) and 500 µm (fig. 5 B).