Oxysarcodexia laclaricola, Souza & Buenaventura, 2016

Souza, Carina Mara De & Buenaventura, Eliana, 2016, Three new species of Oxysarcodexia Townsend (Diptera: Sarcophagidae) from the Colombian Andes, Zootaxa 4084 (1), pp. 115-124 : 119-120

Oxysarcodexia laclaricola sp. n.

( Fig. 2 )

Type material. Holotype ♂: COLOMBIA, Antioquia, Caldas, La / Clara 06º03'06.9''N 75º37'19.2''W,/ 1.840m, 25.6 ºC, 16:05h, TVSR [Van Someren-Rydon trap], 09-/ feb-10 [2010], M02C2, M.A. Ramírez, J./ Durango, H. Areiza, Leg. (CE-TdeA) . Paratype ♂: COLOMBIA, Antioquia, Caldas, La / Clara , 06º03’06.9’’N 75º37’19.2’’W,/ 1.840m, 5.v.2010, Tr VSR [Van Someren-Rydon trap], 10:50h,/ M05C1, M.A. Ramírez, C. Rave,/ Leg. ( MNRJ) .

Description. Male ( Fig. 2A ). Total body length 5.6 mm (n = 2).

Head. Black in ground color, fronto-orbital, parafacial, and postocular plates with golden microtomentum. Occiput blackish with golden microtomentum. First two rows of occipital setulae black, others yellow. Frons about 0.1x head width at level of ocellar triangle. Frontal vitta blackish; frons with a row of 9–10 frontal setae. Inner vertical seta well-developed. Outer vertical seta about 0.4x as long as inner one and as long as postocular setae. Ocellar setae equal in size to uppermost frontal setae. One reclinate fronto-orbital seta 1.5x as long as longest frontal setae. Proclinate seta absent. Gena and postgena with golden microtomentum and black setulae. Pedicel dark brown with one strong and long seta. First flagellomere dark brown with pale golden microtomentum and about 2.0x as long as pedicel. Arista dark brown with the middle portion lighter and long plumose on proximal 2/3. Palpus dark brown.

Thorax. Black in ground color, entirely covered in golden microtomentum, interrupted by three longitudinal equibroad black vittae. Chaetotaxy: acrostichals 0 + 1, dorsocentrals 3 + 4 (anterior one shorter), intra-alars 2 + 2, supra-alars 2 + 3, postalars 2, postpronotals 3 (middle one longer), notopleurals 4 (2 long primaries and 2 shorter subprimaries), katepisternals 3 (middle one shorter and inserted slightly below the imaginary line connecting the two others), meropleurals 9, postalar wall with black setulae. Scutellum without apical setae, with 1 pair of proximal, 1 pair of lateral, 1 pair of subapical and 1 pair of discal setae. Prosternum with a few setulae along distal edges. Wing. Hyaline, tegula black, vein R1 bare, vein R4+5 setulose along proximal 3/4 of distance to crossvein r-m, costal spine not differentiated; third costal sector without ventral setulae. Legs. Dark brownish. Fore femur with one posterodorsal row of setae and two posteroventral rows of setae. Fore tibia with one dorsal seta, three anterodorsal setae, one anteroventral seta, and one ventral seta. Mid femur with five anterodorsal setae, four anteroventral setae, one posterodorsal seta, one dorsal seta, and a posteroventral ctenidium of flattened, spine-like setae. Mid tibia with two anterodorsal setae, two posterior setae, two posterodorsal setae, and one ventral seta. Hind femur with a row of long dorsal setae, a posteroventral row of setae (decreasing in size from the proximal to the distal part of the femur), four anteroventral setae, and one posterior seta. Hind tibia with two posteroventral setae, two anterodorsal setae, one dorsal seta, and three posterodorsal setae. Tarsomeres of all legs ventrally with short golden setae.

Abdomen (other than terminalia). Black in ground color except for tergite 5 which is yellowish, with golden and silvery microtomentum. Syntergite 1+2 and tergite 3 with one dorsal silvery spot and one lateral golden spot. Tergite 4 with one dorsal and one lateral golden spots. Tergite 5 with golden microtomentum. Syntergite 1+2 and tergites 3–4 with two lateral marginal setae. Tergite 4 with one pair of median marginal setae. Tergite 5 with an uninterrupted row of several marginal setae (about 18 marginal strong setae). Sternites 2–4 oblong, with scattered setae. Sternites 3–4 with one, strong posterolateral marginal seta.

Terminalia ( Fig. 2B −F ). Posterior margin of sternite 5 with a deep cleft; inner margin of each side of the cleft slightly expanded, making the cleft narrow, with parallel sides. Syntergosternite 7+8 yellowish, with golden microtomentum and with a few scattered short black setulae and 4 marginal fine setae. Epandrium yellowish with golden microtomentum and black setulae. Posterior margin of cercus slightly bent backwards in lateral view. Cercal prong straight in lateral view; cercus with a constriction in the median area (sinuous aspect of the outer margins), and with a preapical tooth visible in posterior view. Cercal apex dark, shiny and pointed. Surstylus triangular, with a rounded apex and a few sparse marginal setulae. Pregonite broad, tapering, with a pointed apex; lighter than postgonite except for blackish apex. Postgonite dark brown, slender, slightly curved subapically, with a pointed apex. Phallus with a desclerotized band between basi- and distiphallus. Paraphallus antero-proximally with a lateral triangular extension above the vesica. Juxta strongly sclerotized, blackish, hood-shaped. Medial juxtal margin notched in frontoapical view, with an anterior, apparently membranous, flat area. Anterior juxtal margin serrated, covered with small yellow setulae, and slightly folded inwards. Vesica large, bulky and sclerotized. Vesica proximally black, sclerotized, strongly bent, with smooth dorsal and anterior margins. Vesica distally sclerotized, hyaline, forming a leaf-shaped lobe, twisted laterally, with a serrated edge. Acrophallus with a short median process and two lateral styli ( Fig. 2D, F ). Capitis circular.

Female unknown.

Distribution. NEOTROPICAL—Colombia (Antioquia).

Etymology. The specific epithet is a noun in apposition and refers to the type locality, “La Clara”, in Caldas, Antioquia, Colombia.

Remarks. The cercus of Oxysarcodexia laclaricola sp. n. is similar to that of O. floricola Lopes. The sclerotized and prominent proximal section of the vesica is also found in O. cyaniforceps (Hall) . Despite these similarities, O. laclaricola sp. n. possesses unique terminalia, especially in the phallic structures, not previously seen in the genus, which preclude further discussion of similarities with other species of Oxysarcodexia .

Figures

FIGURE 2. Oxysarcodexia laclaricola sp. n., holotype ♂. A. Habitus, lateral view. B. Terminalia, lateral view. C. Terminalia, anterior view. D. Terminalia, posterior view. E. Terminalia, posteroapical view. F. Distiphallus, apical view. For abbreviations, see Fig. 1.