Dexosarcophaga bermudezi, Silva & Mello-Patiu, 2010

Silva, K. P. & Mello-Patiu, C. A., 2010, New species of Dexosarcophaga Townsend from Panama with an illustrated key to species of the subgenus Bezzisca (Diptera: Sarcophagidae), Journal of Natural History 44 (1 - 2), pp. 89-106 : 90-95

publication ID	https://doi.org/ 10.1080/00222930903383487
persistent identifier	https://treatment.plazi.org/id/444287A1-763B-C504-FE27-FEA3FE57845A
treatment provided by	Felipe
scientific name	Dexosarcophaga bermudezi
status	sp. nov.

Treatment

Dexosarcophaga bermudezi View in CoL sp. nov.

( Figures 1–7 View Figures 1–4 View Figures 5–7 )

Description – male

Length: 6.5 mm.

Head. Fronto-orbital, parafacial and posterior ocular orbits with golden microtomentum; frontal vitta brown, anteriormost reddish; gena with golden microtomentum and black setae; postgena grey with rare golden microtomentum, most of setae black, some pale ones near occiput; vertex one-third of head width; parafrontal about 0.37 times distance between vibrissae; facial margin dark brown with sparse slender setulae; reclinate fronto-orbital seta present, proclinate absent; frontal row of six to seven setae; occelar setae broken; outer vertical seta almost two times the postocular setae length; palpus pale brown. Antenna dark brown, reaching 0.74 times distance to vibrissae, first flagellomere 2.5 times as long as pedicel; arista long plumose on basal two-thirds.

Thorax. Dark brown with slight golden microtomentum, more intense in pleural region. Chaetotaxy: Acrostichals = 3 (weakly differentiated) + 1; dorsocentrals = 3 (posteriormost hair-like) + 3 (equidistant and gradually increasing); intra-alars = 2 + 3, supra-alars = 2 + 3 (posterior differentiated); postpronotals 2; postalars 2; notopleurals 2 primary setae intercalated by weak subprimaries; scutellum with 3 marginal setae, apical 0, discal 1; meropleurals 4–5, katepisternals 3, proepimeron bare; prosternum gray and bare. Wings hyaline, R 1 and R 4+5 dorsally setulose along almost their entire length. Legs dark brown; mid femur with posteroventral row of four spines (ctenidium), two preapical posterior setae and two median anteroventrals; mid tibia with one median anterior and two posterior setae; hind tibia with three setae along the anterodorsal and posterodorsal margins, without ventral setae.

Abdomen. Dark brown with slight golden microtomentum. T3 with 1 strong lateral marginal seta; T4 with a moderate pair of median marginal setae and 3 lateral marginals; T5 with 14 strong marginal setae along the posterior margin. Sternites reddish brown with black setae, approximately square-shaped; ST2–3 with setae stronger in lateral margin; ST4 with black marginal setae and bare in discal region; ST5 with black scattered setae and a pair of long marginals in the median region ( Figure 1 View Figures 1–4 ).

Terminalia. Blackish brown. Epandrium with two strong dorsal setae; cercus moderately curved forward with acuminate apex; surstylus claviform with setulae in lower half ( Figures 2 and 3 View Figures 1–4 ); pregonite with enlarged median region in the upper surface, forming an acuminate apophysis, and a narrow and bifid apex; postgonite slightly curved, broader in the base, with a long median setae ( Figure 4 View Figures 1–4 ); phallus with distinct basi- and distiphallus; basiphallus with a pair of posterior longitudinal keel and a reduced epiphallus ( Figure 4 View Figures 1–4 ); distiphallus partially membranous, with a anterior projection conspicuously spinose, and a not well demarcated juxta fused with the distiphallus ( Figures 4 View Figures 1–4 and 5 View Figures 5–7 ); median stylus with an enlarged base, and a narrow spinose apex; lateral styli conspicuously elongated towards the distiphallus base, apex bent forward with two lateral row of spines ( Figures 5 and 6 View Figures 5–7 ); vesica with a single basal projection, bifid apex covered by membranous lobes ( Figures 5 and 7 View Figures 5–7 ).

Female

Unknown

Etymology. The species epithet is named in honour of Dr Sergio E. Bermúdez, in recognition of his cooperation to the knowledge of the Sarcophagidae fauna from Panama.

Type material. Holotype: male, Panama: Prov. Los Santos, Reserva Florestal La Tronosa, El Cortezo , 5–6/V/2006, R. Miranda, R. Cambra, A. Santos col. ( MNRJ)

Taxonomic notes. Dexosarcophaga (Bezzisca) bermudezi is the third species of the subgenus Bezzisca that has been collected in Panama. The male terminalia of D.(B.) bermudezi is most similar to D.(B.) succinta , but the species can be distinguished by numerous details of the male genitalia. The new species can be segregated from other species of Dexosarcophaga with setose vein R 1 by the following key.

Key to the identification of males of the subgenus Bezzisca

1. Basiphallus with one or two posterior longitudinal keels ( Figures 15 View Figures 8–15 and 38 View Figures 31–38 )... 2 Basiphallus without posterior longitudinal keels.................... 12

2. (1). Basiphallus with one posterior longitudinal keel ( Figure 15 View Figures 8–15 )........ 3 Basiphallus with two posterior longitudinal keels ( Figure 38 View Figures 31–38 )........... 4

3. (2). Posterior longitudinal keel of the basiphallus with spines ( Figures 8 and 9 View Figures 8–15 ); distiphallus bent backwards ( Figure 9 View Figures 8–15 ); vesica with a large, membranous, and spinose lobe on anterior surface ( Figures 9 and 10 View Figures 8–15 ); pregonite with two apophyses in upper surface ( Figure 8 View Figures 8–15 )................. D.(B.) ampullula View in CoL Posterior longitudinal keel of the basiphallus without spines ( Figures 11 and 15 View Figures 8–15 ); distiphallus not bent ( Figure 12 View Figures 8–15 ); vesica with lateral membranous bends ( Figures 12 and 14 View Figures 8–15 ); pregonite with bifid apex and with a small digitiform projection on external surface ( Figures 11 and 13 View Figures 8–15 ).......... D.(B.) bicolor View in CoL

4. (2). Anterior projection of the distiphallus with serrated margin, accompanied or not by a spiny surface ( Figures 22 View Figures 16–23 and 25 View Figures 24–30 ).................... 5 Anterior projection of the distiphallus with no serrated margin, without any incisions in all edge of the distiphallus apex, accompanied or not by a spiny surface ( Figures 36 View Figures 31–38 and 40 View Figures 39–45 )......................................10

5. (4). Anterior projection of the distiphallus with median concavity on its margin ( Figures 18 and 22 View Figures 16–23 )...................................... 6 Anterior projection of the distiphallus without concavity on its margin...... 7

6. (5). Cercus with apex acuminate ( Figure 16 View Figures 16–23 ), pregonite with an upper and a lower apophyses near the apex ( Figure 17 View Figures 16–23 ), distiphallus apically with small spines on external lateral surface ( Figure 18 View Figures 16–23 ), vesica without lateral lobes ( Figure 18 View Figures 16–23 ) and with apical part divided in the middle ( Figure 19 View Figures 16–23 )......... D.(B.) rafaeli Cercus View in CoL with apex truncate ( Figure 20 View Figures 16–23 ); pregonite just with two upper small apophyses, near the apex and near the base respectively ( Figure 21 View Figures 16–23 ); distiphallus without spines on external lateral surface ( Figure 22 View Figures 16–23 ); vesica with lateral membranous lobes ( Figure 22 View Figures 16–23 ) and single apex ( Figure 23 View Figures 16–23 )......... D.(B.) limitata View in CoL

7. (5). Pregonite with an inner flat extension on apex and setulae on lower surface ( Figure 24 View Figures 24–30 ); distiphallus with posterior spines ( Figure 25 View Figures 24–30 ); vesica with two conspicuous anterior projections ( Figure 26 View Figures 24–30 )........ D.(B.) aurifacies Pregonite View in CoL with bifid or bifurcate apex and without setulae on lower surface; distiphallus without posterior spines, vesica variable.................. 8

8. (7). Pregonite with enlarged margin and an acuminate apophysis in the upper surface ( Figure 4 View Figures 1–4 ); anterior projection of the distiphallus with strong spines ( Figures 5 and 6 View Figures 5–7 ); vesica, in anterior view, with a single basal projection and a bifurcate apex covered by two membranous lobes ( Figure 7 View Figures 5–7 )................................ D.(B.) bermudezi View in CoL sp. nov. Pregonite with almost straight upper margin without apophysis; anterior projection of the distiphallus with very small spines; vesica, in anterior view, with a basal bifurcate apophysis and a single lobe in the apical region................................................... 9

9. (8) Surstylus pear-like ( Figure 27 View Figures 24–30 ); juxta not well demarcated ( Figures 28 and 29 View Figures 24–30 ); basal apophysis of the vesica with short apical bifurcation ( Figure 30 View Figures 24–30 )................................................. D.(B.) succinta View in CoL Surstylus sub-retangular ( Figure 31 View Figures 31–38 ); juxta partially detached from the distiphallus ( Figures 32 and 33 View Figures 31–38 ), basal apophysis of the vesica with long apical bifurcation ( Figure 34 View Figures 31–38 ).............................. D.(B.) montana View in CoL

10. (4) Pregonite with bifid apex ( Figure 35 View Figures 31–38 ); vesica with spines on upper surface ( Figures 36 and 37 View Figures 31–38 )................................... D.(B.) dodgei Pregonite View in CoL with single apex; vesica without spines on upper surface...... 11

11. (10) Pregonite with an acute apex ( Figure 39 View Figures 39–45 ); basiphallus with short epiphallus ( Figure 39 View Figures 39–45 ); anterior projection of the distiphallus with a downward position, without any spines ( Figure 40 View Figures 39–45 ); vesica with a short bifurcate apex and without basal apophysis ( Figure 41 View Figures 39–45 )....... D.(B.) rudicompages Pregonite View in CoL with rounded apex and a small digitiform projection on external surface ( Figure 43 View Figures 39–45 ); basiphallus with elongate epiphallus ( Figure 42 View Figures 39–45 ); anterior projection of the distiphallus poorly protruded with few small spines and dorsal region of the distiphallus laterally with some strong spines ( Figure 44 View Figures 39–45 ); vesica with a single apex forming a membranous lobe and a long basal apophysis ( Figures 44 and 45 View Figures 39–45 )............................... D.(B.) guyi View in CoL

12. (1) Basiphallus with spines on posterior surface ( Figures 46 and 47 View Figures 46–52 ); distiphallus with an indefinite juxta ( Figure 46 View Figures 46–52 ); short median and lateral styli ( Figure 48 View Figures 46–52 ); vesica enlarged in lateral view and narrow in anterior view ( Figures 47 and 49 View Figures 46–52 )................................ D.(B.) angrensis Basiphallus View in CoL without spines on posterior surface ( Figures 50 View Figures 46–52 and 53 View Figures 53–55 ); distiphallus with a conspicuous and elongate juxta ( Figures 50 and 51 View Figures 46–52 ); long median and lateral styli ( Figure 52 View Figures 46–52 ); vesica variable.................. 13

13. (12) Distiphallus with a median spiny strip around all its width ( Figures 51 and 52 View Figures 46–52 ); juxta enlarged and conspicuous ( Figures 50 and 51 View Figures 46–52 )............................................. D.(B.) accurate Distiphallus without spines ( Figures 53 View Figures 53–55 ), with a conspicuous ventral lobe ( Figures 53 and 54 View Figures 53–55 ); juxta narrow and bifid ( Figures 54 and 55 View Figures 53–55 )............................................ D.(B.) inaequalis View in CoL