Mesembrinella aeneiventris (Wiedemann, 1830)

Whitworth, Terry L. & Yusseff-Vanegas, Sohath, 2019, A revision of the genera and species of the Neotropical family Mesembrinellidae (Diptera: Oestroidea), Zootaxa 4659 (1), pp. 1-146 : 68

Key to the species of the M. aeneiventris species-group

1 Postpronotal lobe with 3 setae........................................................................... 2

- Postpronotal lobe with 2 setae........................................................................... 7

2 Subcostal sclerite setose ( Fig. 490 ); body color orange to reddish-brown; kat 1:1; T1+2 yellowish..................... 3

- Subcostal sclerite bare or pubescent; body color blue-black; kat usually 2:1; T1+2 black to blue-black.................. 4

3 Apices of mid and hind femora orange; ac 1:1; male frons narrow, about 0.02 of head width at narrowest; epandrium, cerci and surstyli as in Figs 53–54 ; female terminalia as in Fig. 300 , T 6 without median suture; [known only from Colombia and Venezuela]...................................................................................... M. vogelsangi

- Apices of mid and hind femora black; ac 2:1; male frons much broader, 0.09 of head width at narrowest; epandrium, cerci and surstyli as in Figs 55–56 ; female terminalia as in Fig. 301 , T 6 with median suture; [known only from Costa Rica]........................................................................................... M. zurquiensis sp. nov.

4 Femora pale; male frons 0.07 of head width at narrowest; male surstylus long and slender, parallel-sided in lateral view ( Fig. 39 ); cerci in posterior view long with a broad base ( Fig. 40 ); female T6 broadly divided midway anteriorly ( Fig. 293 ); [known only from Colombia and Venezuela]............................................................. M. decrepita

- Femora dark; male frons width variable; male surstylus variable in lateral view; cerci in posterior view either broad at base and short, or narrow at base and longer; female T6 not divided midway.............................................. 5

5 Anterior and posterior thoracic spiracles pale yellow; male frons 0.14 of head width at narrowest; cercus exceptionally short and broad ( Fig. 50 ); female T6 of OU shape; T7 narrowed midway ( Fig. 298 ); [known only from Costa Rica and Mexico].............................................................................................. M. uniseta

- Anterior thoracic spiracle yellow-brown to black, posterior thoracic spiracle brown to black; other characters variable..... 6

6 Acrostichal setae 0:1, outer posthumeral seta present; anterior thoracic spiracle black; legs black; male frons 0.06 of head width at narrowest; cerci slender ( Wolff et al. 2017: figs 9–10); [known only from Colombia]...................... M. obscura

- Acrostichal setae 2:1, outer posthumeral seta absent; anterior thoracic spiracle yellow-brown; legs reddish-brown; [known only from Mexico; male unknown].............................................................. M. xanthorrhina

7 Subcostal sclerite setose (as in Fig. 490 ); thoracic chaetotaxy with ac 0:1 and dc 2:2; coxae, trochanters and femora orange with reddish-brown apices; male frons narrow, 0.015 of head width; [for epandrium, cerci and surstyli and other characters, see Wolff et al. (2017: figs 12–18); known only from Colombia]......................................... M. cordillera

- Subcostal sclerite bare; other characters variable............................................................. 8

8 Outer posthumeral seta present.......................................................................... 9

- Outer posthumeral seta absent.......................................................................... 11

9 Pleural area of thorax and legs blue-black; ac 0:0; male frons 0.07 of head width at narrowest; epandrium, cerci and surstyli as in Figs 41–42 ; female terminalia as in Fig. 294......................................................... M . lara

- Pleural area of thorax and femora yellow-orange, tibiae and tarsi brown; usually ac 1:1 or 1:2 (in M. aeneiventris sometimes missing on one or both sides)........................................................................... 10

10 Acrostichals 1:2 (but sometimes missing on one or both sides); male frons broad, 0.07–0.08 of head width at narrowest; male with ST5 very broad and wing-like ( Fig. 249 ); epandrium, cerci and surstyli as in Figs 35–36 ; female terminalia as in Fig. 292 ; [known from Brazil, Colombia, Costa Rica, Ecuador, Panama and Peru].............................. M. aeneiventris

- Acrostichals 1:1; male frons narrower, 0.03–0.05 of head width at narrowest; ST5 normal ( Fig. 252 ); epandrium, cerci and surstyli as in Figs 43–44 ; female terminalia as in Fig. 295 ; [known only from Costa Rica]........ M. nigrocoerulea sp. nov.

11 Wing with well-defined infuscation along costa; thorax reddish-brown to blackish; ac 0:1; male with surstylus long and slender in left lateral view, arching inward in posterior view ( Figs 45–46 ); female terminalia as in Fig. 296 ; [known from Peru, Ecuador and Brazil]................................................................................ M. purpurata

- Wing hyaline or only faintly infuscated; surstylus not as long and slender; other characters variable................... 12

12 T1+2 and anterior 1/3 or more of T3 yellow-orange, varying dorsally, always yellow laterally; ac 0:1; other characters variable............................................................................................... 13

- T1+2, T3 blue-black; ac 1:1; male frons 0.02 of head width at narrowest; epandrium, cerci and surstyli as in Figs 51–52 ; female terminalia as in Fig. 299 ; [known only from Costa Rica]....................................... M. violacea sp. nov.

13 Femora brown to black; scutellum lacking discal setae [NB: discal setae present on T5]; [known only from Peru; male unknown].................................................................................... M. bequaerti

- Femora orange; scutellum with discal setae; male frons 0.05 of head width at narrowest; T3 of abdomen with dark, inverted V shape mid-dorsally in male; epandrium, cerci and surstyli as in Figs 47–48 ; female terminalia as in Fig. 297 ; [known only from Costa Rica]................................................................................ M. semiflava

Figures

FIGURES 489–497. Diagnostic characters of Mesembrinella spp. 489. Dorsal view of stem vein of wing of M. bellardiana Aldrich showing stem vein setose. 490. Detail of wing of M. batesi Aldrich in ventral view, showing setose condition of subcostal sclerite. 491. Epandrium of M. mexicana sp. nov. in posterior view, showing broad dorsal division found in M. spicata group. 492. Detail of abdomen of male M. epandrioaurantia sp. nov., showing orange color of rear segments. 493. Detail of dorsal habitus of M. socors (Walker), showing triangle of bluish cuticle on hind margin T3. 494. Wing of M. pictipennis Aldrich, showing pattern of infuscation. 495. Posterodorsal habitus of male M. townsendi Guimar„es, showing wing pattern and stripes on thorax. 496. Detail of male abdomen of M. anomala (Guimar„es), showing relative lengths of T4 and T5. 497. Same as previous, showing modification of T6, STS7+8 and epandrium.

FIGURES 53–56. Left lateral and posterior views of epandrium, cerci and surstyli of Mesembrinella spp. 53–54. M. vogelsangi (Mello). 55–56. M. zurquiensis sp. nov.

FIGURES 300–305. Female terminalia (T6–T8, epiproct, cerci) of Mesembrinella spp., dorsal view. 300. M. vogelsangi (Mello). 301. M. zurquiensis sp. nov. 302. M. apollinaris Séguy. 303. M. batesi Aldrich. 304. M. bellardiana Aldrich. 305. M. benoisti (Séguy).

FIGURES 1–8. Diagnostic characters of Mesembrinellidae and Calliphoridae. 1. Wing of Mesembrinella flavicrura Aldrich, showing veins and cells. 2. Wing of M. currani Guimar„es, showing infuscated anterior margin. 3. Wing of Laneella fusconitida sp. nov., showing dark macula around crossvein r-m. 4. Wing of Calliphora vomitoria (Linnaeus), showing acute bend of vein M. 5. Anterior spiracle of Mesembrinella batesi Aldrich, showing broad oval opening above. 6. Anterior spiracle of M. bolivar (Bonatto), showing long, narrow opening gradually widening above. 7. Meral setae and posterior spiracle of M. bicolor (Fabricius). 8. Last abdominal tergites of M. vogelsangi (Mello), showing setae.

FIGURES 39–40. Epandrium, cerci and surstyli of Mesembrinella decrepita Séguy. 39. Left lateral view. 40. Posterior view.

FIGURES 288–293. Female terminalia (T6–T8, epiproct, cerci) of Mesembrinella spp., dorsal view. 288. M. guaramacalensis sp. nov. 289. M. mexicana sp. nov. 290. M. spicata Aldrich. 291. M. epandrioaurantia sp. nov. 292. M. aeneiventris (Wiedemann). 293. M. decrepita Séguy.

FIGURES 47–52. Left lateral and posterior views of epandrium, cerci and surstyli of Mesembrinella spp. 47–48. M. semiflava Aldrich. 49–50. M. uniseta Aldrich. 51–52. M. violacea sp. nov.

FIGURES 294–299. Female terminalia (T6–T8, epiproct, cerci) of Mesembrinella spp., dorsal view. 294. M. lara (Bonatto). 295. M. nigrocoerulea sp. nov. 296. M. purpurata Aldrich. 297. M. semiflava Aldrich. 298. M. uniseta Aldrich. 299. M. violacea sp. nov.

FIGURES 41–46. Left lateral and posterior views of epandrium, cerci and surstyli of Mesembrinella spp. 41–42. M. lara (Bonatto). 43–44. M. nigrocoerulea sp. nov. 45–46. M. purpurata Aldrich.

FIGURES 239–251. Male sternites of Lanella spp. 239. L. fusconitida sp. nov. 240. L. fuscosquamata sp. nov. 241. L. nigripes Guimar„es 242. L. perisi (Mariluis). 243. L. purpurea sp. nov. 244. M. latifrons (Mello). 245. M. mexicana sp. nov. 246. M. spicata Aldrich. 247. M. epandrioaurantia sp. nov. 248. M. woodorum sp. nov. 249. M. aeneiventris (Wiedemann). 250. M. decrepita Séguy. 251. M. lara (Bonatto) (ST5 only).

FIGURES 33–38. Left lateral and posterior views of epandrium, cerci and surstyli of Mesembrinella spp. 33–34. M. woodorum sp. nov. 35–36. M. aeneiventris (Wiedemann). 37–38. M. bolivar (Bonatto).

FIGURES 252–265. Male sternites of Mesembrinella spp. 252. M. nigrocoerulea sp. nov. 253. M. purpurata Aldrich. 254. M. semiflava Aldrich. 255. M. uniseta Aldrich. 256. M. violacea sp. nov. 257. M. vogelsangi (Mello). 258. M. zurquiensis sp. nov. 259. M. batesi Aldrich. 260. M. bellardiana Aldrich. 261. M. benoisti (Séguy). 262. M. bicolor (Fabricius). 263. M. brunnipes Surcouf. 264. M. bullata sp. nov. 265. M. chantryi sp. nov.