Mesembrinella guaramacalensis Whitworth, 2019

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 : 50-54

publication ID	https://doi.org/10.11646/zootaxa.4659.1.1
publication LSID	lsid:zoobank.org:pub:57309E14-0330-4ED7-BCDA-355EE6618215
DOI	https://doi.org/10.5281/zenodo.5586999
persistent identifier	https://treatment.plazi.org/id/03DA87E6-0F0B-FFE0-FF19-BD3D3545FB10
treatment provided by	Plazi (2019-08-26 08:39:22, last updated 2024-11-26 00:25:35)
scientific name	Mesembrinella guaramacalensis Whitworth
status	sp. nov.

Treatment

Mesembrinella guaramacalensis Whitworth , sp. nov.

( Figs 288 View FIGURES 288–293 , 332 View FIGURES 326–349 , 375 View FIGURES 370–400 , 417 View FIGURES 411–423 , 487–488 View FIGURES 484–487 View FIGURE 488 )

Diagnosis. A medium-sized fly averaging 10 mm (9–11/2) in length. Discs of upper and lower calypters light tan to brown, with brown fringe; anterior spiracle yellow vs. brown in M. spicata ; T4 with marginal row of setae vs. without marginal row of setae in M. spicata ; male unknown, female terminalia as in Fig. 288 View FIGURES 288–293 .

Description. Female. Frons 0.245 0.24–0.25/2 of head width at narrowest. Fronto-orbital yellow with pale yellow tomentum; frontal vitta dark orange below, brown above; parafacial mostly orange with yellow tomentum, posterior 1/4 dark with pale tomentum; gena with short horizontal row of 4 stout setae midway and scattering of fine dark setae overall; postgena dark silvery with fine yellow setae; occiput dark, like postgena, with silvery tomentum and fine yellow setae, median occipital sclerite shiny dark brown; antenna bright orange, arista orange at base, remainder tan; palpus typical; eye with median facets 2x size of lateral facets; ocellar triangle medium-sized, ocelli of equal size; facial ridge with only two dark supravibrissal setae and some small brown setae clustered at base.

Thorax without stripes on dorsum, bluish with heavy, irregular pale tomentum; pleura blue with pale tomentum; chaetotaxy: ac 2:1, dc 2:3, ia 0, ph 1, ppn 3x 3, kat 1:1, meral setae typical, 1 pair converging ap, sa absent, 1 lat, 1 stout bas, 1 pb, 1 disc; subscutellum moderately developed; anterior spiracle medium-sized, yellow, posterior spiracle medium-sized, brown; legs entirely brown. Wing hyaline; subcostal sclerite bare; basicosta tan, tegula brown; section IV 0.16 of section III; discs of upper and lower calypters brown; rim of upper calypter with short dark brown setae, rim of lower calypter with long dark brown setae.

Abdomen entirely purple with whitish tomentum; T4–5 with marginal rows of stout setae; T5 without discal setae, with only short fine setae. Terminalia. T6 of WU shape, T7 short and broad, recessed along rear edge midway, T8 as separate sclerites ( Fig. 288 View FIGURES 288–293 ); ST6–8 and hypoproct as in Fig. 332 View FIGURES 326–349 ; spermathecae filiform ( Fig. 375 View FIGURES 370–400 ); ST1–5 as in Fig. 417 View FIGURES 411–423 .

Male. Unknown.

Type material. HOLOTYPE ♀ ♦* ( TLW294 ) ( Venezuela , Trujillo; MJMO; Fig. 487 View FIGURES 484–487 ), labeled: VENEZUELA Trujillo / P.N. Guaramacal 1480 m / 11–16 /VI/2002 / 9°19ʹ021 N– 70°15ʹ480 W; T. Amarilla / R. Briceño; J. Clavijo; R. Paz, F. Díaz; L. Joly; A. / Chacón / Proyecto S 1-2000000479 ; HOLOTYPE / Mesembrinella / guaramacalensis / T.L. Whitworth.

ALLOTYPE ♀ ♦ ( TLW293 ): same data as holotype except 14–20.ii.2002 ( MJMO).

Distribution. Venezuela.

Remarks. Known only from two females from Venezuela. The two female specimens ( TLW 293–294) were barcoded and the sequence data place them in the spicata group, in a distinct cluster near M. mexicana sp. nov. ( Fig. 488 View FIGURE 488 ). Barcodes show that this species has a 4% genetic distance from M. mexicana and an 8% genetic distance from M. spicata .

Etymology. The name guaramacalensis refers to the type locality of the new species, Guaramacal National Park in Venezuela.

Figures

FIGURE 488. Neighbor-joining tree of COI DNA barcode sequences of specimens and species of Mesembrinellidae, using K2P distances and generated in BOLD; species names on the tree are followed by BOLD accession number, voucher number, country of origin, number of sequenced base pairs and number of ambiguous nucleotides.

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 326–349. ST6–8 and hypoproct of Mesembrinellidae. 326. Laneella fusconitida sp. nov. 327. L. fuscosquamata sp. nov. 328. L. nigripes Guimar„es. 329. L. perisi (Mariluis). 330. L. purpurea sp. nov. 331. Mesembrinella latifrons (Mello). 332. M. guaramacalensis sp. nov. 333. M. mexicana sp. nov. 334. M. spicata Aldrich. 335. M. epandrioaurantia sp. nov. 336. M. aeneiventris (Wiedemann). 337. M. decrepita Séguy. 338. M. lara (Bonatto). 339. M. nigrocoerulea sp. nov. 340. M. purpurata Aldrich. 341. M. semiflava Aldrich. 342. M. uniseta Aldrich. 343. M. violacea sp. nov. 344. M. vogelsangi (Mello). 345. M. zurquiensis sp. nov. 346. M. apollinaris Séguy. 347. M. batesi Aldrich. 348. M. bellardiana Aldrich. 349. M. benoisti (Séguy).

FIGURES 370–400. Spermathecae of Mesembrinellidae. 370. L. fusconitida sp. nov. 371. L. fuscosquamata sp. nov. 372. L. nigripes Guimar„es. 373. L. perisi (Mariluis). 374. L. purpurea sp. nov. 375. Mesembrinella guaramacalensis sp. nov. 376. M. mexicana sp. nov. 377. M. spicata Aldrich. 378. M. aeneiventris (Wiedemann). 379. M. decrepita Séguy. 380. M. lara (Bonatto). 381. M. nigrocoerulea sp. nov. 382. M. purpurata Aldrich. 383. M. semiflava Aldrich. 384. M. uniseta Aldrich. 385. M. vogelsangi (Mello). 386. M. zurquiensis sp. nov. 387. M. apollinaris Séguy. 388. M. batesi Aldrich. 389. M. bellardiana Aldrich. 390. M. benoisti (Séguy). 391. M. bicolor (Fabricius). 392. M. brunnipes Surcouf. 393. M. bullata sp. nov. 394. M. chantryi sp. nov. 395. M. currani Guimar„es. 396. M. cyaneicincta (Surcouf). 397. M. flavicrura Aldrich. 398. M. longicercus sp. nov. 399. M. peregrina Aldrich. 400. M. pictipennis Aldrich.

FIGURES 411–423. Female sternites of Mesembrinellidae. 411. Laneella fusconitida sp. nov. (LACM). 412. L. fuscosquamata sp. nov. 413. L. nigripes Guimar„es. 414. L. perisi (Mariluis). 415. L. purpurea sp. nov. 416. Mesembrinella latifrons (Mello). 417. M. guaramacalensis sp. nov. 418. M. mexicana sp. nov. 419. M. spicata Aldrich. 420. M. epandrioaurantia sp. nov. 421. M. aeneiventris (Wiedemann). 422. M. decrepita Séguy. 423. M. lara (Bonatto).

FIGURES 484–487. Lateral habitus and labels of holotypes. 484. M. umbrosa Aldrich (USNM). 485. M. velasquezae sp. nov. (MJMO). 486. Souzalopesiella facialis (Aldrich) (USNM). 487. M. guaramacalensis sp. nov. (MJMO).