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Stomina calvescens ♀ (Tachinidae)
rafael_carbonell	#1 Posted on 29-08-2022 22:16
Member Location: Posts: 648 Joined: 23.03.06	On a wall, 26.viii.2022 (Spain: Girona: Beuda), determination using Mosch Web [Cerretti, Tschorsnig, Lopresti, Di Giovanni. ZooKeys 205: 5–18. doi: 10.3897/zookeys.205.3409] Edited by rafael_carbonell on 30-11-2023 19:35


rafael_carbonell	#2 Posted on 29-08-2022 22:17
Member Location: Posts: 648 Joined: 23.03.06	... Edited by rafael_carbonell on 29-08-2022 22:22


rafael_carbonell	#3 Posted on 29-08-2022 22:23
Member Location: Posts: 648 Joined: 23.03.06	...


rafael_carbonell	#4 Posted on 29-08-2022 22:24
Member Location: Posts: 648 Joined: 23.03.06	[TAXA OUTPUT] Acemya Robineau-Desvoidy, 1830: 202 Stomina Robineau-Desvoidy, 1830: 411 [SELECTED CHOICE] (1) EYE -Eye bare or nearly bare: hairs, if present, not longer than diameter of 2 eye facets (2) OCELLI -ocelli present (25) DORSAL PART OF OCCIPUT -postero dorsal part of head without black setulae behind postocular row (39) SCUTUM: PRESUTURAL STRIPES -... with three, four or five presutural dark vittae, or uniformly covered with pruinosity (44) PRESUTURAL ACROSTICHAL SETAE -... two ... (45) PRESUTURAL DORSOCENTRAL SETAE -... two ... (46) POSTSUTURAL DORSOCENTRAL SETAE -... three ... (52) SCUTELLUM COLOUR -scutellum mainly black, more or less red or yellowish apically -scutellum mainly red or yellowish (73) BEND OF M -bend of M forming a distinctly obtuse angle (76) RATIOS OF VEIN M -section of M between R-M and DM-Cu visibly longer than section between DM-Cu and bend of M (77) CROSSVEIN DM-Cu -crossvein DM-Cu not exceptionally oblique (78) PETIOLE [STALK] -cell r4+5 open [or vein m not reaching wing margin] (88) PRUINOSITY OF ABDOMEN -abdomen entirely covered by dense, sometimes not uniform, pruinosity, tessellated or showing dark patches https://www.inaturalist.org/observations/132483351


Zeegers	#5 Posted on 30-08-2022 07:03
Member Location: Posts: 18446 Joined: 21.07.04	Difficult. There seem to be only 2 post IA on thorax, that should be a big clue (favouring Acemyiini, I guess). Any chance of a pic showing lateral view, o matter how bad ? Theo


rafael_carbonell	#6 Posted on 30-08-2022 15:18
Member Location: Posts: 648 Joined: 23.03.06	No, sorry :-( the camera could'nt get into the wall, to take a shot more ventrally. There are clearly 2 post sutural intra-alar setae. If I add two postsutural intra-alar setae separated by a distance equal at most to distance between the first seta and the suture, then it is also left Acemya and Stomina. I add another dorsolateral view. Edited by rafael_carbonell on 30-08-2022 16:03


John Carr	#7 Posted on 30-08-2022 15:39
Member Location: Posts: 9773 Joined: 22.10.10	The first flagellomere of Acemya is pointed at the upper tip, not rounded as usual in Tachinidae.


rafael_carbonell	#8 Posted on 30-08-2022 16:07
Member Location: Posts: 648 Joined: 23.03.06	Thanks, John, then it's not Acemyia Edited by rafael_carbonell on 30-08-2022 16:08


rafael_carbonell	#9 Posted on 31-08-2022 17:49
Member Location: Posts: 648 Joined: 23.03.06	Even if the view of the flagellomere is not good, Acemyia looks quite different.


Zeegers	#10 Posted on 31-08-2022 19:04
Member Location: Posts: 18446 Joined: 21.07.04	Well, it could be a female Stomina, but I am not totally sure. Theo


rafael_carbonell	#11 Posted on 25-01-2023 00:20
Member Location: Posts: 648 Joined: 23.03.06	Ok


rafael_carbonell	#12 Posted on 29-11-2023 19:28
Member Location: Posts: 648 Joined: 23.03.06	Repeated the key (1) EYE -Eye bare or nearly bare: hairs, if present, not longer than diameter of 2 eye facets (2) OCELLI -ocelli present (25) DORSAL PART OF OCCIPUT -postero dorsal part of head without black setulae behind postocular row (30) APEX OF FIRST FLAGELLOMERE -non-sharpened apex (39) SCUTUM: PRESUTURAL STRIPES -... with three, four or five presutural dark vittae, or uniformly covered with pruinosity (44) PRESUTURAL ACROSTICHAL SETAE -... two ... (45) PRESUTURAL DORSOCENTRAL SETAE -... two ... (46) POSTSUTURAL DORSOCENTRAL SETAE -... three ... (47) POSTSUTURAL INTRA-ALAR SETAE -two postsutural intra-alar setae separated by a distance equal at most to distance between the first seta and the suture (52) SCUTELLUM COLOUR -scutellum mainly black, more or less red or yellowish apically -scutellum mainly red or yellowish (73) BEND OF M -bend of M forming a distinctly obtuse angle (76) RATIOS OF VEIN M -section of M between R-M and DM-Cu visibly longer than section between DM-Cu and bend of M (77) CROSSVEIN DM-Cu -crossvein DM-Cu not exceptionally oblique (78) PETIOLE [STALK] -cell r4+5 open [or vein m not reaching wing margin] (88) PRUINOSITY OF ABDOMEN -abdomen entirely covered by dense, sometimes not uniform, pruinosity, tessellated or showing dark patches. Taxa output= Stomina Robineau-Desvoidy, 1830: 411 Somebody else wrote me it was not S.caliendrata https://www.inaturalist.org/observations/132483351 Edited by rafael_carbonell on 29-11-2023 19:29


eklans	#13 Posted on 30-11-2023 12:05
Member Location: Posts: 3337 Joined: 11.11.18	The frons seems to be bigger than an eye? Abdomen seems to be black lateral - not yellowish or red (1st img.)? Fore tarsomere 5 seems to be approx. as long as wide (2nd img)? And if the claws of the fore tarsus are at most half as long as tarsomere 5 it could be the female Stomina calvescens from Ceretti (2010): I tachinidi della fauna italiana Edited by eklans on 30-11-2023 12:11 Greetings, Eric Kloeckner


rafael_carbonell	#14 Posted on 30-11-2023 19:31
Member Location: Posts: 648 Joined: 23.03.06	Thank you Eric :-) I have found and studied the key and agree it must be calvescens Best wishes Rafael Edited by rafael_carbonell on 30-11-2023 19:34


Zeegers	#15 Posted on 03-12-2023 08:29
Member Location: Posts: 18446 Joined: 21.07.04	Females Stomina are very tricky ….

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