|
Key to the genera of Tachinidae in the eastern US Third page of the Tachinid key. See page one for information and initial key points. Eastern species list. |
|
131. R4+5 setose from base to well beyond crossvein r-m
132
131. R4+5 not setose beyond crossvein r-m
133
132. Katepisternum with a row of fine hairs ascending from midventral angle of katepisternum to a point just ventral to lower katepisternal bristle. Upper part of anepisternum usually with two well-developed bristles. Parafacial usually without minute setae below lowest frontal bristle
Actia R-D. (5/8)
132. Katepisternum lacking such a row of fine hairs. Upper part of anepisternum usually with a single well-developed bristles. Parafacial with minute setae extending from lowest frontal bristle usually to level of base of arista
Ceromya R-D. (8/9)
133. Scutellum lacking both lateral and discal bristles. Membrane between lower genal margin and clypeus forming a convex sclerite
Ginglymia Townsend (2/2)
133. Scutellum with small lateral bristles and well-developed discal bristles. No sclerite between genal margin and clypeus
134
134. R1 setose dorsally
Miamimyia Townsend (1/1) cincta Townsend
134. R1 bare
Chaetonodexodes Townsend, in part (1/1) vanderwulpi Townsend
135. Hind coxa with one or more hairs on posterior margin
136
135. Hind coxa bare on posterior margin
136. Parafacial with one or two bristles; these distinctly larger than surrounding hairs and situated near lower margin of eye
137
136. Parafacial with hairs only or bare
137. Palpus present, filiform, not enlarged apically
P. anaxias
Peleteria 2nd R-D. (4/39 in 4 subgenera)
137. Palpus absent
138
138. Parafacial with two stout bristles; these more or less equal in size, separated from each other by about half distance between upper parafacial bristles and lowest frontal bristle. Frontal bristles arising in two rows, the lowest bristle at level of lower fourth of eye
Deopalpus Townsend (2/11)
138. Parafacial usually with a single stout bristle, sometimes with a smaller bristle immediately below it. Frontal bristles arising in a single row, the lowest bristle at level of middle of eye
Copecrypta Townsend (1/1) ruficauda Wulp
139. Palpus well-developed
140
139. Palpus absent or reduced to a minute tubercle; abdomen black except for a triangular spot of white or gold pollen on tergite 5; tergite 3 with two or three pairs of median marginal bristles; tergite 4 with group of discal bristles
Epalpus Rondani (1/3) signifer Walker
140. Eye covered with conspicuous dense hairs
Jurinia R-D. (2/2)
140. Eye apparently bare
141
141. Abdominal tergite 3 with only one pair of median marginal bristles
142
141. Abdominal tergite 3 with more than one pair (usually three or more pairs) of median marginal bristles
143
142. First flagellomere, even in male, small, subcircular, bluntly rounded or truncate apically, always shorter than pedicel
Tachina Meigen (12/38 in 2 subgenera)
142. First flagellomere kidney-shaped, somewhat pointed apically, in most species as long as, or longer than, pedicel, even in female; if first flagellomere shorter than pedicel (some females), then abdominal tergites 2-4 bluish pruinose, contrasting with nonpruinose tergite 5
Archytas Jaennicke (12/15 in 2 subgenera)
143. Abdominal tergites 3 and 4 without median discal bristles; tergite 3 with three to five pairs of short stout median marginal bristles; the longest of these no more than twice as long as the shortest (see image at 141)
Juriniopsis Townsend (2/4)
143. Abdominal tergites 3 and 4 each with several pairs of discal bristles forming a median patch or irregular transverse row; tergite 3 with a single pair of median marginal bristles and several much shorter ones less than a third their length. Base of wing and a small area around r-m darkened. Abdomen dark brown
Pararchytas B. & B. (2/3)
144. All four of the following characters present simultaneously: only one frontal bristle arising below upper margin of pedicel; pedicel with one or two exceptionally long slender setae which are more than half as long as arista; arista pubescent or plumose; subvibrissal ridge with five or more slender bristles usually continuous with bristles of subcranial margin. Male with upper frontal bristles proclinate
145
144. Differing from the above in the following: frontal bristles usually descending below level of pedicel, but if not, then either setae on pedicel all shorter than half aristal length or arista minutely pubescent or apparently bare; subvibrissal ridge usually with fewer than five bristles, usually not continuous with bristles along subvibrissal ridge. Male with upper frontal bristles reclinate
145. Proepisternum setose
146
145. Proepisternum bare, rarely with a single hair
146. Proboscis long, slender, anteriorly curved at apex, more than twice as long as head height
Prosenoides B. & B. (2/3)
146. Proboscis at most 1.5 times as long as head height 147
147. Middorsal depression on abdominal syntergite 1+2 confined to anterior half or less of that segment. Median marginal bristles on this syntergite normally absent
Dinera R-D. (1/1) grisescens Fallen
147. Middorsal depression on abdominal syntergite 1+2 extending back to hind margin of that segment, or if not, then one pair of erect median marginal bristles present 148
148. Integument and pruinescence entirely pale orange brown. Proboscis and palpus both exceptionally short, shorter than arista. Lower half of face, in anterior view, high and narrow; vibrissa arising above lower facial margin
P. flavus
Phasiops Coquillett (1/1) flavus Coquillett
148. Integument dark brown or black, with grayish pruinescence. Proboscis well-developed. Palpus either normally developed or absent. Lower half of face not narrowed, and vibrissa arising at level of lower facial margin
149
149. Middorsal depression on abdominal syntergite 1+2 confined to anterior two-thirds of that segment
Phalacrophyto Townsend (1/1) sarcophagina Coquillett
149. Middorsal depression on abdominal syntergite 1+2 reaching to or nearly to hind margin of that segment
150
150. Face with at most a small carina that scarcely separates antennae (see second image at 148)
Billaea R-D. (7/9)
150. Face with a prominent median carina, usually high enough to separate the antennae along their entire length
151
151. Proboscis slender, straight, about as long as height of head. Hind tibia of male with comb-like dorsolateral row of short evenly and closely set setae
Opsotheresia Townsend (2/2)
151. Proboscis stouter, shorter than height of head. Hind tibia of male without comb-like dorsolateral row of setae
152
152. Facial carina widest and most prominent ventrally, below level of apices of antennae
Dexia Meigen (1/1) ventralis Aldrich
152. Facial carina widest and most prominent near middle of face, between antennae
153
153. Facial carina of rather uniform height, flattened along its crest, in anterior view widest near its midpoint, just below level of base of arista. Inner vertical bristles parallel or divergent. Anterior genal margin straight or slightly concave, ending ventrally below eye well behind its midpoint
Nicephorus Reinhard (1/1) floridensis Reinhard
153. Facial carina more conical, most prominent at level of junction of pedicel and first flagellomere, with rounded crest (see image at 150). Apices of inner vertical bristles convergent. Anterior genal margin convex, sometimes with a few small hairs extending across membrane of genal groove to lower corner of face
Ateloglossa Coquillett (8/14)
154. Middorsal depression on abdominal syntergite 1+2 extending back to hind margin of that segment
155
154. Middorsal depression of abdominal syntergite 1+2 smaller and shallower, not extending back to hind margin
158
155. Proboscis long and slender, longer than height of head
156
155. Proboscis shorter and stouter, not as long as head height
157
156. Face with a broad, flat-topped carina, completely separating antennae (see image at 150)
Prosena Lepeletier & Serville (1/1) siberita Fabricius
156. Face without a median carina
Mochlosoma B. & B. (2/5)
157. Fronto-orbital plate outside of row of frontal bristles almost devoid of setae except near ocellar triangle. Abdomen strongly pointed apically, especially in male
Zelia R-D. (6/12)
157. Fronto-orbital plate with setae outside of frontal bristles extending forward to below middle of eye. Abdomen rounded apically, usually with a variegated pruinose pattern. Moderate sized species, about 10-15 mm.
Ptilodexia B. & B. (10/22)
158. M ending in R4+5 before reaching wing margin
159
158. M ending separately in wing margin
160
159. Fused portion of R4+5 and M shorter than crossvein r-m (first wing below); second costal portion (between apices of Sc and R1) three or more times as long as costal bristle (second wing below)
Estheria R-D., in part (1/1) cinerea Townsend
159. Fused portion of R4+5 and M longer than crossvein r-m; second costal portion less than twice as long as costal bristle
Microchaetina Wulp, in part (2/8)
160. Proboscis and palpus both exceptionally short, shorter than arista. Lower part of face, at and below level of vibrissae, narrowed, not protruding. First flagellomere no longer than pedicel
Megapariopsis Townsend (1/1) opaca Coquillett
160. Proboscis and palpus not so modified. Lower part of face not strongly narrowed. First flagellomere distinctly longer than pedicel
161
161. Abdominal syntergite 1+2 elongate and strongly constricted to form a cylindrical petiole
Cordyligaster Macquart (1/1) septentrionalis Townsend
161. Base of abdomen not petiolate
162
162. Wing strongly patterned, with the veins emphasized with dark brown. Body predominantly yellow. Abdominal syntergite 1+2 without marginal bristles
E. litturata
Euantha Wulp (1/1) litturata Olivier
162. Wing unpatterned. Body blue gray. Abdominal syntergite 1+2 with one pair of median marginal bristles
Ochrocera Townsend (1/1) vaginalis Townsend
163. Scutellum with one to three straight nearly erect preapical bristles arising on dorsal surface just anterior to apex. Anterior margin of postgena with at most a slight genal dilation. Last section of CuA1 (beyond crossvein dm-cu) between half as long and twice as long as preceding section
164
163. Scutellum without a group of one to three straight preapical bristles. Anterior margin of postgena usually with well-developed genal dilation. Last section of CuA1 usually less than half as long as preceding section
164. Anepimeron with an exceptionally long stout bristle, extending beyond apex of lower calypter
165
164. Anepimeron with at most a short bristle not extending beyond middle of lower calypter
166
165. Parafacial with two or three long proclinate bristles. R1 and CuA1 without setae dorsally
A. cinerea
Athrycia R-D. (1/1) cinerea Coquillett
165. Parafacial with only a few short setae below lowest frontal bristle. R1, R4+5, and CuA1 setose dorsally
H. cauta
Hypovoria Villeneuve (2/2)
166. M ending in R4+5 before reaching wing margin
167
166. M ending separately in wing margin
168
167. Abdominal tergite 4, and usually 3 also, with median marginal bristles
Wagneria R-D. (4/5)
167. Abdominal tergites 3 and 4 each lacking differentiated marginal and discal bristles
Kirbya R-D. (2/5 in 3 subgenera)
168. Parafacial with a single large proclinate bristle arising just below lowest frontal bristle
V. ruralis
Voria R-D. (2/2)
168. Parafacial with a row of proclinate bristles or patch of small decumbent setae
C. coquilletti
169
169. Eye covered with long dense hairs (see above image)
Cyrtophleba Rondani (2/3)
169. Eye apparently bare
170
170. Sc with bristles ventrally; R1 usually setose ventrally as well as dorsally, at least at apex
C. atripennis
Chaetoplagia Coquillett (1/1) atripennis Coquillett
170. Sc and R1 bare ventrally
171
171. Parafacial setae small and short, more or less uniform in length, none distinctly bristle-like
172
171. Parafacial setae composed of bristles and hairs, differing distinctly in size, the bristles usually arranged in a vertical row
E. erucicola
173
172. Prementum slender, straight and as long as or longer than height of head; labella reduced, pointed apically
P. similis
Plagiomima B. & B. (5/10)
172. Prementum shorter than height of head; labella usually enlarged
Metaplagia Coquillett (3/6)
173. Second aristomere elongate, more than three times as long as wide. Face (see second image at 171)
Euptilopareia Townsend (1/2) erucicola Coquillett
173. Second aristomere not more than twice as long as wide
Meleterus Aldrich (1/2) nuperus Reinhard
174. Parafacial setose on lower half or more
175
174. Parafacial bare at least on lower half
175. M ending in R4+5 before reaching wing margin; the united petiole at least half as long as that part of M beyond bend
176
175. M ending separately in wing margin or in R4+5 very close to margin
176. Abdominal tergites 3 and 4 lacking differentiated marginal and discal bristles. Small shining black species with fronto-orbital plate and all of parafacial shining black contrasting with thickened orange brown arista and antennal base
E. dacotensis
Euscopolia Townsend (1/1) dakotensis Townsend
176. Abdominal tergite 4, and usually 3 also, with median marginal bristles. Parafacial usually pruinescent
177
177. Ocellar bristles reclinate. Antennal bases separated from one another. Calypter exceptionally large, white, extending over basal third of abdomen. Apex of female abdomen with pincers-like cerci opposing one another horizontally, each with sharp apex and inner margin armed with peg-like setae
L. simplex
Leucostoma Meigen, in part (5/9)
177. Ocellar bristles proclinate or absent. Antennal bases contiguous. Calypter not exceptionally large. Female abdomen without modified pincer-like cerci
178
178. Second aristomere three or more times as long as wide
179
178. Second aristomere scarcely longer than wide
181
179. First aristomere nearly as long as the second, both of them four or five times as long as wide (Fig. 89). Lower facial margin protruding beyond bases of vibrissae. Acrostichal bristles absent or hair-like
P. stylata
Periscepsia Gistel, in part (3/8 in 2 subgenera)
179. First aristomere less than half as long as the second. Lower facial margin not protruding. Acrostichal bristles well-developed
180
180. Anepimeron bare, except for a single large bristle accompanied by one or two smaller ones at its base
Mauromyia Coquillett (4/5)
180. Anepimeron with a group of small bristles
Periscepsia Gistel, in part (3/8 in 2 subgenera)
181. Abdominal tergites 3 and 4 with median discal bristles
182
181. Abdominal tergites 3 and 4 without discal bristles
184
182. Prementum slender and elongate, 1.5 times head height, and curved forward; labella minute, appearing as a continuation of prementum. Abdominal tergite 3 with two pairs of discal bristles, on e ahead of the other and set far forward on the segment; hind margin of tergite 2 concave
T. skinneri
Trochiloides Coquillett (1/2) leonardi West
182. Prementum not longer than head height; labella enlarged. Abdominal tergite 3 with a single pair of discal bristles 183
183. Parafacial setae few, small, often only one present, confined to lower fourth of parafacial
Loewia Egger (1/1) foeda Meigen
183. Parafacial setae long and erect, forming a row extending along entire length of parafacial
P. helymus
Periscepsia Gistel, in part (3/8 in 2 subgenera)
184. Eye setose. Parafacial wider than width of first flagellomere in profile. Wing with long costal spine and dark anterior margin
Muscopteryx Townsend, in part (4/10)
184. Eye bare. Parafacial narrower that width of first flagellomere. Wing with short costal bristle and scarcely any dark pigment
Paradidyma B. & B., in part (11/16)
185. M gradually and evenly curved, without an abrupt bend. Parafacial forming a narrow band encircling lower margin of eye, ending at its posteroventral corner
F. montana
Freraea R-D. (1/1) montana Coquillett
185. M with a distinct bend. Parafacial not encircling lower margin of eye, ending before posteroventral part of eye
186
186. Anterior border of postgena rather straight or concave, without pronounced genal dilation, meeting ventral cranial margin behind middle of head; genal groove thus rather extensive
187
186. Anterior border of haired part of gena convex anteriorly, curving anteriorly to form a small to moderate genal dilation extending forward to a point anterior to middle of head; genal groove consequently much narrower
187. Median surface of fore coxa almost entirely covered with short appressed black setae. Height of eye about half total height of head. Antenna small, recessed into small deep oval facial cavity. Lower part of face long and narrow, with four to five pairs of large subvibrissal bristles above lower facial margin
M. disjuncta
Microphthalma Macquart (3/4)
187. Median surface of fore coxa with setae confined to anterolateral edge. Height of eye more than half total height of head. Antenna and face not highly modified as above
188
188. Parafacial with single row of bristles
P. affinis
Paradidyma B. & B., in part (11/16)
188. Parafacial irregularly covered with setae of varying sizes
189
189. Parafacial setae usually of two sizes, namely a single row of larger bristles along anterior margin of parafacial sometimes even arising from membrane anterior to it, flanked by smaller and finer setae laterally. Integument of body of most species rather shiny, bluish of greenish black. Abdomen more than half as wide as long; tergite 6 and syntergosternite 7+8 exposed. Eye facets in male slightly larger on upper two-thirds of eye and when densely haired, hairs longer above than below
G. clistoides
Gnadochaeta Macquart (6/17)
189. Parafacial setae not so differentiated into two series. More slender species with narrower gray pruinose, transversely banded abdomen; tergite 6 and syntergosternite 7+8 concealed beneath tergite 5. Eye facets not enlarged dorsally in male
190
190. Anepimeron with one bristle extending back to hind margin of upper calypter. Female with tergite 6 longitudinally divided into two halves (see below). Male with unhinged aedeagus and well-developed gonopod
Pseudopachystylum Mik (1/1) debile Townsend
190. Anepimeron with hairs only. Female with tergite 6 undivided. Male with hinged aedeagus; gonopod reduced
Phyllomya R-D. (1/5) polita Coquillett
191. Middorsal depression of abdominal syntergite 1+2 extending back to hind margin of that segment; syntergite 1+2 lacking median marginal bristles
192
191. Middorsal depression not extending back to hind margin of syntergite 1+2, usually not more than halfway back; syntergite 1+2 with median marginal bristles and sometimes with median discal bristles as well
192. Palpus greatly reduced, parallel-sided, usually shorter than pedicel
L. tessallata
Linnaemya R-D. (4/7 in 2 subgenera)
192. Palpus clavate, normal in length, longer than pedicel
193
193. Bristles on lower part of parafacial reclinate, curved dorsally, forming an evenly spaced row that is continuous with frontal bristle row, and evidently an extension of it extending ventrally nearly to lower margin of parafacial. First flagellomere of male sometimes divided longitudinally into tow of three branches
D. robusta
Dichocera Williston (2/6)
193. Bristles on lower part of parafacial proclinate, curved ventrally, separated from reclinate lowermost bristle or frontal row at level of insertion of arista
194
194. Aristomeres 1 and 2 elongate, all three subequal in length. R1 and R4+5 each setose dorsally along most of their length
Triarthria Stevens (1/1) setipennis Fallen
194. Aristomeres 1 and 2 scarcely longer than wide, much shorter than aristomere 3. R1 bare and R4+5 setose only at base, or bare. Antennal bases contiguous or nearly so; antenna orange
Lypha R-D. (5/6)
195. Parafacial with single evenly spaced row of long, stout setae, increasing in size ventrally, usually also with some shorter finer hairs laterally
196
195. Parafacial with scattered setae not arranged in a row
196. Aristomere 3 strongly swollen only on basal fourth or less, tapering abruptly to apex. First flagellomere no longer than 1.5 times length of pedicel. Vibrissa arising above level of lower facial margin
Muscopteryx Townsend, in part (4/10)
196. Aristomere 3 thickened on basal third or more before tapering to apex. First flagellomere two or more times length of pedicel. Vibrissa arising at level of lower facial margin
Blepharomyia Townsend (1/2) tibialis Curran
|
