Ormiophasia chapulini,

Gudin, Filipe M. & Nihei, Silvio S., 2019, Taxonomic revision of the Neotropical genus Ormiophasia Townsend, 1919 (Diptera: Tachinidae), with the description of eight new species, Zootaxa 4643 (1), pp. 1-74: 61-63

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Ormiophasia chapulini

sp. nov.

Ormiophasia chapulini  sp. nov.

( Figs 6FView FIGURE 6, 8EView FIGURE 8, 10FView FIGURE 10, 12FView FIGURE 12, 14EView FIGURE 14, 36View FIGURE 36, 42AView FIGURE 42)

Type material. HOLOTYPE ♂ ( Figs 6FView FIGURE 6, 10FView FIGURE 10, 12FView FIGURE 12, 36A, C, FView FIGURE 36): “ MEX: Veracruz, UNAM/ Los Tuxtlas Estac./ Biol., N Catemaco [municipality of Veracruz]/ 16–19, Sept. 1989 / E Barrera, TJ Henry/ & IM Kerzhner colls.”/ “ Holotype ” [red label] ( USNM). 

PARATYPES (4 ♂♂, 1 ♀): Costa Rica  : 1 ♂ [dissected]: “ Costa Rica, Prov. Puntarenas / Est. Agujas, Send. El Río , 300 m / 6–12 ENE 1998 [6–12.i.1998], M. Lobo [leg.]/ L_S_276750_526550, #49738”/ “ Costa Rica, MNCR/ CRI002/ 412248”/ “ Paratype ” [green label] ( MNCR); Mexico  : 3 ♂♂ [two dissected, one photographed] ( Fig. 36EView FIGURE 36), 1 ♀ [photographed] ( Figs 8EView FIGURE 8, 14EView FIGURE 14, 36B, DView FIGURE 36): “ MEX, Veracruz, UNAM/ Los Tuxtlas Estac. / Biol., N Catemaco / 16–19 Sept. 1989 [16–19.ix.1989]/ E. Barrera, T.J. Henry / & I.M. Kerzhner colls. [leg.]”/ “ Paratype ” [green label] ( USNM)  .

Type locality. Mexico, Veracruz, Veracruz, Estación de Biología Tropical “Los Tuxtlas”  .

Distribution. Costa Rica (province of Puntarenas) and Mexico (state of Veracruz).

Etymology. The name is a tribute to one of the most iconic characters that has captivated the whole of Latin America, “El Chapulín Colorado ”, created by the spectacular Mexican actor Roberto Gómez Bolaños. The name is a noun in the genitive case.

Diagnosis. Ormiophasia chapulini  sp. nov. can be distinguished from other species of Ormiophasia  by head with silver pruinosity ( Figs 6FView FIGURE 6, 8EView FIGURE 8); clypeus darker than frontoclypeal membrane; scutum dark brown, contrasting with brown postpronotal lobe ( Figs 10FView FIGURE 10, 12FView FIGURE 12, 14EView FIGURE 14); wing hyaline ( Fig. 36FView FIGURE 36); and apex of male cerci about 1/3 length of cerci ( Fig. 42AView FIGURE 42), subquadrate in posterior view and more than 1/2 width of cerci, gradually constricted. Ormiophasia chapulini  sp. nov., O. causeyi  and O. tavaresi  sp. nov. share hyaline wing and darker body color, but they can be clearly distinguished by examining the length and width of the apex of the male cerci as well as by epandrial characters ( Figs 42AView FIGURE 42, 38BView FIGURE 38, 41CView FIGURE 41, respectively). Female specimens of O. chapulini  sp. nov. and O. causeyi  are hard to discriminate, but O. chapulini  sp. nov. usually has a bare ( Fig. 36View FIGURE 36 A–B) rather than plumose ( Fig. 17View FIGURE 17 A–B) arista.

Description. Male. Body length 6.84–6.97 mm (mean = 6.91 mm); wing length 6.91–7.14 mm (7.04 mm) (n = 4).

Coloration. Head silver-pruinose ( Fig. 6FView FIGURE 6). Frontal vitta brown. Ocellar triangle black. Fronto–orbital plate gray. Lunule yellowish-gray. Antenna brownish-orange. Parafacial gray. Gena, facial ridge and face brown. Mouthparts brown except clypeus (dark brown). Occiput dark brown in upper area, becoming light brown in lower area. Thorax silver-pruinose ( Fig. 10FView FIGURE 10, 12FView FIGURE 12). Scutum dark brown; presutural scutum with three silver-pruinose stripes merged posteriorly after suture. Postpronotal lobe and lateral surface of thorax brown. Scutellum dark brown. Subscutellum brown. Wing hyaline ( Fig. 36FView FIGURE 36). Tegula brown. Basicosta light brown. Veins brown. Halter light brown. Calypteres brown. Legs brown. Abdomen entirely brown with silver pruinosity.

Head ( Figs 6FView FIGURE 6, 36A, CView FIGURE 36). Elliptic in frontal view; ratio of head height/head width 0.75. Ocelli 1.5 times the diameter of dorsal ommatidia. Postocellar setae 2–3. Frontal vitta entirely obliterated. Frontal setae 7–8, convergent, posterior ones shorter and weaker.Arista bare. First flagellomere 2.4 times longer than pedicel. Face 1.3 times wider than facial ridge. Facial ridge 2.5 times wider than parafacial.

Thorax. Basisternum 0.36 times as high as wide ( Fig. 36EView FIGURE 36); median upper margin rounded, subtriangular. Prosternal tympanal membrane 0.55 times as high as wide. Proepimeral setae 2, upcurved. Anterodorsal corner of anepisternum with 1 weak seta, about 1/2 length of first notopleural seta; posterior row with 8 setae. Meral setae 9–10. Wing. Subequal to body length, three times longer than wide. Basicosta subequal in width to tegula. Base of vein R 4+5 with 2–4 dorsal and 2–4 ventral setae. Section of vein M between crossvein dm-cu and M 1 straight. Legs. Fore femur with row of 11–13 dorsal setae from base to apex and row of 15–16 posteroventral setae from base to apex. Fore tibia with row of 4 equally-spaced anterodorsal setae and 1 preapical seta. Mid femur with 2–3 posteroventral basal setae. Hind femur with row of 13–14 anterodorsal setae from base to apex and 3–4 anteroventral basal setae. Hind tibia with 2 posterodorsal median setae and 1 preapical seta.

Terminalia ( Fig. 42AView FIGURE 42). Sternite 5 subrectangular; lateral distal lobes pronounced. Anteroventral epandrial process continuous with ventral epandrial margin. Dorsal surface of epandrium short, posterior margin higher than anterior margin; lateral ventral margin slightly curved; posterior area articulated to surstylus with open, rounded arch. Surstylus stout, as thick as apex of cerci in lateral view; posterior outer surface covered with strong setae in upper two-thirds. Cerci: basal margin with distinct median projection; apex about 1/3 length of cerci, subquadrate in posterior view, thick and tapered in lateral view; apex more than 1/2 width of cerci in posterior view, gradually constricted; apex with anterior surface slightly V-shaped. Postgonite slightly curved, apex rounded in lateral view.

Female. Differs from male as follows Body length 6.96 mm; wing length 7.94 mm (n = 1). Head ( Figs 8EView FIGURE 8, 36B, DView FIGURE 36). Ratio of head height/head width 0.80. Frontal vitta subequal in width to fronto-orbital plate. Frontal setae 6, from lunule to posterior orbital proclinate seta; second or third anteriormost frontal seta stronger and subequal to subvibrissal setae. First flagellomere 2.9 times longer than pedicel. Facial ridge 2.1 times wider than parafacial.

Remarks. The female was associated with the males by being from the same locality. Description of the female prothorax was not possible, since there was only one specimen available for study. Although O. chapulini  sp. nov. is similar to O. causeyi  and O. tavaresi  sp. nov., these three species can be clearly distinguished by the length and width of the apex of the male cerci as well as by epandrial characters. Among the three species, the width of apex of male cerci is the broadest in O. chapulini  sp. nov. The new species seems to be restricted to Central America, from Costa Rica to Southeast Mexico, which is so far the northernmost limit of the genus.


Smithsonian Institution, National Museum of Natural History


Museo Nacional de Costa Rica