Paraberismyia

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Taxonavigation

Ordo: Diptera
Familia: Stratiomyidae

Name

Paraberismyia Woodley, 1995 – Wikispecies link – Pensoft Profile

• Paraberismyia Woodley 1995: 134. Type species, Paraberismyia tzontehuitza Woodley, by original designation.

Diagnosis

Woodley (1995) fully diagnosed and described Paraberismyia within the context of the world fauna of Beridinae. It may be separated from all other world genera of beridines except Allognosta Osten Sacken and Berismyia Giglio-Tos by having distinct hair-like setae around the apical margin of the first antennal flagellomere. Paraberismyia may be separated from Allognosta because it possesses denticles on the posterior margin of the scutellum, which Allognosta lacks. Allognosta is also not known to occur in Mexico or Central America. Species of Berismyia overlap in distribution with Paraberismyia. Berismyia are drab colored flies with a brownish to black mesonotum with at most faint metallic reflections and a dark brownish to black, unicolorous abdomen, whereas Paraberismyia are more brightly colored with a distinctly metallic mesonotum and an abdomen that is bicolored. Also, all known species of Berismyia (including several that are undescribed) have the genital capsule with a very long, narrow, posteromedial process on the synsternite that is sharply acute apically (Woodley 1995: 191, fig. 126), while in Paraberismyia this process is shorter, broader, and has a rounded apex (Figs 11, 20, 29).

Remarks

The species of Paraberismyia are very similar in general structure, differing mainly in characters of coloration and the male terminalia. The coloration differences are very consistent and therefore can be used to accurately identify the species.

Key to species of Paraberismyia

Key to species of Paraberismyia — N. Woodley

1		Males (eyes contiguous on frons)    2
–		Females (eyes widely separated on frons)    4
2	(1)	Wing cell cup completely covered with microtrichia; at least distal half of hind basitarsus dark brown    3
–		Wing cell cup not completely covered with microtrichia, extensively bare in basal half; hind basitarsus completely pale colored, at most with vague darkening of extreme apex    Paraberismyia triunfo sp. n.
3	(2)	Dorsal half of anepisternum with bare, shiny area without tomentum; hind basitarsus completely dark brown, only vaguely pale at extreme base (Fig. 27); wing cell r2+3 infuscated, essentially concolorous with cell r4    Paraberismyia tzontehuitza Woodley
–		Dorsal half of anepisternum completely covered with tomentum; hind basitarsus with basal one-third to one-half pale whitish yellow (Fig. 9); wing cell r2+3 weakly infuscated, obviously paler than cell r4    Paraberismyia mathisi sp. n.
4	(1)	Wing cell cup completely covered with microtrichia; pleura yellowish to orangish, not obviously marked with darker coloration (Figs 10, 28)    5
–		Wing cell cup not completely covered with microtrichia, extensively bare in basal half; pleura with obvious dark markings or nearly completely dark (Figs 2, 19)    6
5	(4)	Lateral margins of upper frons bare, without tomentum (Fig. 6); dorsal part of occiput (postocular orbit) only narrowly visible in profile with brownish gray tomentum that is not conspicuous (Fig. 28); anepisternum on dorsal half with bare, shiny area    Paraberismyia tzontehuitza Woodley
–		Lateral margins of upper frons with bands of grayish tomentum along eye margins (Fig. 4); dorsal part of occiput (postocular orbit) wide, easily visible in profile with conspicuous silvery gray tomentum (Fig. 10); anepisternum on dorsal half completely covered with tomentum    Paraberismyia mathisi sp. n.
6	(4)	Postalar callus, postpronotal lobe, and laterotergite yellowish orange; abdominal sternites 2–5 completely yellowish orange    Paraberismyia chiapas sp. n.
–		Postalar callus and postpronotal lobe with at least some dark brownish coloration, laterotergite black with bluish reflections; abdominal sternites 2–5 with distinct dark lateral markings    Paraberismyia triunfo sp. n.

Taxon Treatment

• Woodley, N; 2013: A revision of the Neotropical genus Paraberismyia Woodley (Diptera, Stratiomyidae, Beridinae) with three new species ZooKeys, 353: 25-45. doi

Images

Figures 1–2. Holotype female of Paraberismyia chiapas Woodley. 1 Dorsal view 2 Left lateral view.  Figures 3–6. Frontal view of female heads of Paraberismyia species. 3 Paraberismyia chiapas Woodley (holotype)4 Paraberismyia mathisi Woodley (paratype)5 Paraberismyia triunfo Woodley (paratype) 6 Paraberismyia tzontehuitza Woodley (paratype).  Figures 9–10. Left lateral views of Paraberismyia mathisi Woodley. 9 Male (paratype) 10 Female (paratype).  Figures 11–15. Male terminalia of Paraberismyia mathisi Woodley. 11 Genital capsule, dorsal view 12 Gonostylus, lateral view 13 Phallic complex, dorsal view 14 Phallic complex, left lateral view 15 Epandrium and postgenital segments. Abbreviations: c, circus; ep, epandrium; ga, gonocoxal apodeme; gc, gonocoxite; gs, gonostylus; pps, posteromedial process of synsternite.  Figures 18–19. Left lateral views of Paraberismyia triunfo Woodley. 18 Male (paratype) 19 Female (paratype).  Figures 20–24. Male terminalia of Paraberismyia triunfo Woodley. 20 Genital capsule, dorsal view 21 Gonostylus, lateral view 22 Phallic complex, dorsal view 23 Phallic complex, left lateral view 24 Epandrium and postgenital segments.  Figures 27–28. Left lateral views of Paraberismyia tzontehuitza Woodley. 27 Male (holotype) 28 Female (paratype).  Figures 29–33. Male terminalia of Paraberismyia tzontehuitza Woodley. 29 Genital capsule, dorsal view 30 Gonostylus, lateral view 31 Phallic complex, dorsal view 32 Phallic complex, left lateral view 33 Epandrium and postgenital segments.