Dexosarcophaga limon sp. nov.

urn:lsid:zoobank.org:act: 96DDE888-0828-433C-9E66-71D6F7689605

Figs 3F, 6

Diagnosis

Vein R 1 bare. Male: scutellum with a pair of reduced apical setae; vesica with a ventral, sclerotized lobe (Fig. 6D–E); juxta folding around tip of paraphallus and with numerous spine-like processes (Fig. 6D– E). [Female unknown.]

Etymology

The species epithet ‘ limon ’ should be treated as a noun in apposition. The name refers to the province where the type locality of the new species is located.

Material examined

Holotype COSTA RICA • ♂; Limón, 15 km S of Siquerres, Las Brisas, Nairi-Barbilla nr Rio Dantas; alt. 300– 500 m; 21–28 Aug.1996; Gustafsson, Pape and Viklund leg.; INBio [lost].

Description

Male (n=1)

Length: 8 mm. Differs from D. phoenix sp. nov. as follows:

Frons about 0.25 × head width at level of ocellar triangle; 10 well-developed frontal setae reaching level of apex of pedicel; first flagellomere approximately 4× as long as pedicel; thorax with slightly yellowish-silver pollinosity (Fig. 3F); intra-alars 2 +2, postpronotals 2; meral setae 5–7; scutellum with pair of reduced apical setae; abdomen dark brown, with golden pollinosity; T5 with row of 12 marginal setae; cercus with pointed apex (Fig. 6B–C); surstylus trapezium-shaped in lateral view (Fig. 6B); pregonite almost straight, 1.5× length of postgonite and with broad base (Fig. 6D); vesica consisting of membranous and sclerotized areas and with ventral dark lobe with 2–3 spines (Fig. 6D–E); juxta equipped with numerous spines (Fig. 6D–E); median stylus with enlarged base and narrow apex, slightly shorter than lateral stylus, base curved towards ventral and dorsal margins of paraphallus and with apical spines (Fig. 6D–E); lateral stylus with base slightly curved towards ventral margin of paraphallus and with apical spines (Fig. 6D–E).

Female

Unknown.

Distribution

Costa Rica (Limón).

Remarks

Dexosarcophaga limon sp. nov. is morphologically similar to D. petra sp. nov. and D. paulistana (Lopes, 1982) by having a vesica with a rounded lobe in lateral view (Figs 6D, 7D; Lopes 1982a: fig. 58). Dexosarcophaga limon sp. nov. and D. petra sp. nov. can be differentiated from D. paulistana by the distally completely rounded vesica (Figs 6D, 7D) and with a digitiform projection distally in D. paulistana (Lopes 1982a: fig. 58). Males of D. limon sp. nov. can be differentiated from those of D. petra sp. nov. by the following features: ST5 with arm-like processes almost parallel-sides in middle part, apically rounded, and almost half as long as sternite (Fig. 6A), cercus almost straight in lateral view (Fig. 6B), and juxta with small spines apically (Fig. 6D–E). In D. petra sp. nov., these features appear as follows: ST5 with arm-like processes gradually tapering, apically pointed and distinctly shorter than half of sternite, and with two small but distinct lobes projecting near the midline (Fig. 7A); apical half of cercus curved anteriorly (Fig. 7B), and juxta with small spines only at base (Fig. 7D–E).