Bromeloecia coniclunis Yau and Marshall, 2018

Yau, Tiffany & Marshall, Stephen A., 2018, A revision of the genus Bromeloecia Spuler (Diptera: Sphaeroceridae: Limosininae), Zootaxa 4445 (1), pp. 1-115 : 91-95

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Bromeloecia coniclunis Yau and Marshall

sp. n.

Bromeloecia coniclunis Yau and Marshall sp. n.

(Figs. 19.1–19.16)

Description: Body length 1.2–1.8 mm (males), 1.3–2.2 mm (females).

Head: Flagellomere 1 with 2–3 very small circular pits on basal outer edge. Genal height 0.5x eye height; gena with 6 – 7 setulae at genal margin and anteroventral corner.

Wing: Angle between costa and R4+5 75°. Distance between radial fork and r-m 2.8x length of r-m; dm-cu subequal to length of r-m and distance between crossveins slightly shorter than length of dm-cu. M-pseudovein slightly bent towards costa, bent posteriorly but remained anterior to basal portion in distal half and ending very close to wing margin.

WIPs: Basal angle of distal spot wide, 95°; posterior edge curved posteriorly or slightly elbowed at distal half.

Legs: Fore femur ventrally with 1 large ventrobasal seta and distal to it, 2 close rows of strong offset setae, usually a total of 5–7, posteroventrally with a row of 4–5 strong setae on distal one third of femur, second last seta strong; female with 1 large ventrobasal seta and a continuous row of 8–9 posteroventral setae along length of femur, second last seta strong. Male fore tibia anteroventrally with a comb of 16–17 small stout setae on distal three quarters; comb absent in females.

Male abdomen and terminalia: S5 medially with some desclerotization, setae at edge of desclerotization directed posteromedially. Anteroventral arm of synsternite 6+7 posteromedially with a row of microtrichia, apex tapering and curled. Both left and right anteroventral processes of epandrium articulating with lateral extension plate of hypandrium. Subanal plate cone-shaped with a pair of strong setae. Subepandrial sclerite medially rectangular plate-like with thin lateral arms. Cerci straight and converging. Surstylus quadrate and wraps around cercus anteriorly; anteroventral surface covered with setae.

Hypandrium with lateral extension plate starting from distal half of posteromedial hypandrial process; outer margin of extension plate articulating with slender hypandrial arms. Phallapodeme simple rod-like. Ejaculatory apodeme and bulb not observed. Distiphallus FDS slender, apically tapered; SDS thin, medially desclerotized; MS olive-shaped, distally with 3 leaves of membrane.

Female abdomen and terminalia: Each half of T8 shaped as an isosceles triangle. S8 wide, bell-shaped. Epiproct glossy on lateral thirds. Cercus diamond-shaped. Each spermatheca with large apical thimble-shaped pit and 4 small basal pits.

Type specimens: Holotype: ♂: BOLIVIA: La Paz: Coroico, Cerro Uchumachi , 16°12ʹ43ʺS, 067°42ʹ49ʺW, elfin forest, 2550 m, dung pans, 5–6 Apr 2001, S. A. Marshall, debu00188983 ( CBFC).

Paratypes: BOLIVIA: La Paz: Caranavi , 15°49ʹ00ʺS, 067°33ʹ00ʺW, compost pans, 13–15 Apr 2001, S. A. Marshall (2♂, DEBU) ; Caranavi , 10 km NW, road to ENTEL tower, 15°46ʹ35ʺS, 067°35ʹ48ʺW, 1400 m, dung pans, 13 Apr 2001, S. A. Marshall (1♂, 1♀, DEBU) ; same as holotype (18♂, 25♀, CBFC, DEBU); ditto, 5–16 Apr 2001 (21♂, 19♀, CBFC, DEBU) ; Coroico, Cerro Uchumachi, 16°12ʹ43ʺS, 067°42ʹ49ʺW, cloud forest, 2550 m, 5 Apr 2001, S. A. Marshall (1♂, DEBU); Cumbre Alto Beni, 28 km E Caranavi , 15°40ʹ31ʺS, 067°29ʹ21ʺW, ~ 1400 m, dung pans, 14 Apr 2001, S. A. Marshall (2♂, 4♀, DEBU) . ECUADOR: Napo: Baeza , 17 km NE, 1400 m, carrion trap, 3–6 Mar 1976, S. Peck (1♀, DEBU) ; ditto, dung trap (1♀, DEBU) ; Baeza , 24 km NE, 1300 m, carrion trap, 4–6 Mar 1976, S. Peck (1♂, 5♀, DEBU) ; Pichincha: 28 km E Alluriquin, Chiriboga Road , moss forest, 5200ʹ, carrion trap, 19–27 Jun 1975, Peck (32♂, 36♀, QCAZ, DEBU) ; 22.7 km E Tandapi , moss forest, 8000ʹ, dung trap, 24–29 Jun 1975, S. Peck (7♂, 3♀, QCAZ, DEBU) ; Zamora-Chinchipe: Res. Biol. San Francisco, Atajo trail, 03°58ʹ30ʺS, 079°4ʹ25ʺW, 2000 m, YPT, 25 Feb–3 Mar 2009, M. Pollet & A. De Braekeleer (1♂, UTPL) . PERU: Cusco: Wayqecha Biol. Stn., ~ 9 km NE Challabamba , 13°10ʹS, 071°35ʹW, cloud forest, leaf litter, ~ 2800 m, dung pans, 14–15 May 2007, Marshall & Kits (1♂, 2♀, DEBU) ; Wayqecha Biol. Stn., ~ 9 km NE Challabamba, 13°10ʹ20ʺS, 071°35ʹ00ʺW, Trecha Oso , 2600–2700 m, dung pans, 4 Dec 2011, S. A. Marshall (6♂, 7♀, MUSM, DEBU) ; ditto, pan traps, 5–7 Dec 2011 (1♀, DEBU) . VENEZUELA: Mérida: Tabay, La Mucuy, Truchicola trail, cloud forest, FIT, 17 Jun–3 Jul 1989, S. & J. Peck (1♂, DEBU) ; Táchira: 38 km NE San Cristóbal, 7000ʹ, carrion, 18–20 Jun 1974, S. Peck (3♂, 1♀, MIZA, DEBU) ; Trujilo: Guaramacal Natl. Pk. , 2000– 3000 m, car net, 26 Aug–1 Sep 1992, L. Masner (1♂, DEBU) ; Guaramacal Natl. Pk., 14 km NE Boconó , 2000 m, 25 Aug–1 Sep 1992, L. Masner (1♂, DEBU) ; Guaramacal Natl. Pk. , 2000 m, 26 Aug–1 Sep 1992, L. Masner (1♂, DEBU) .

Etymology: This name refers to the cone-shaped subanal plate (Latin ‘coniculus’: cone-like, conical; Latin ‘clunis’: buttocks, rump).

Comments: B. coniclunis is a high-elevation, Andean species, ranging from Venezuela to Bolivia. Males can be easily recognized by the conical subanal plate.


Ontario Insect Collection, University of Guelph


Museo de Zoologia, Pontificia Universidad Catolica del Ecuador


Universit� di Perugia


Museo del Instituto de Zoologia Agricola Francisco Fernandez Yepez