Copestylum boqueronense, Rotheray & Hancock & Marcos-García, 2007

Rotheray, G. E., Hancock, E. G. & Marcos-García, M. A., 2007, Neotropical Copestylum (Diptera, Syrphidae) breeding in bromeliads (Bromeliaceae) including 22 new species, Zoological Journal of the Linnean Society 150 (2), pp. 267-317 : 293-294

013. COPESTYLUM BOQUERONENSE SP. NOV.

ROTHERAY & MARCOS- GARCÍA

Diagnosis – male holotype: Face with central vitta coated in black hairs and clearly reaching tubercle, only vague and indistinct from above to base of antennae; cheeks coated in dust and pruinosity; genae with black vittae and upper half coated in pruinosity ( Fig. 11 ); eyes coated with black hairs; mesonotum dark with yellow lateral vittae and posterior margin with a triangular yellow spot; hairs of mixed length; yellow hairs anteriorly and black hairs posteriorly; four prescutellar bristles present; one black bristle on yellowish posterior anepisternum; pleurites dark; scutellum yellow with mixed length hairs; band of yellow hairs basally, otherwise black haired; legs black except for yellow marked tarsi, apex of femora, and anterior tibia; legs black haired except for yellow hairs on the ventral surface of the tarsi; abdomen yellow except tergite 4 fuscous; tergites 1 and 2 mostly yellow haired with posterior band of black hairs, and rest of abdomen black haired with hairs becoming gradually longer towards apex; sternite 1 black, sternites 2 and 3 yellow with yellow hairs; sternite 4 black covered with black hairs; genitalia – apical margin of superior lobes with tapering distal hook and two teeth behind, with deep gap between these teeth; epandrium with two pairs of windows ( Figs 47, 48, 49 ); female – frons darker than face and black haired with three longitudinal furrows; width of vertex about 19% of width of head. Length: body, 11.30–12.00 mm; wing, 10.00 mm (N = 3).

Puparium: anterior fold with a band of pale, browntipped spicules, spicules shortening posteriorly and reaching anterior sensilla 3 of prothorax; anterior spiracles as long as wide with either three or four apical openings; vestiture of stout, upright setae on dorsum and lateral margins of the body, setae forming microspicules on the ventral surface; larger spicules on the longitudinal folds of the prothorax; lateral margin of mesothorax with a pair of large, conspicuous brown hooks sharing the same sclerotized basal plate, margin of basal plate with tiny hooks; lateral margin of metathorax with one hook, as large as those on the mesothorax; antero-ventral margin of metathorax with two groups of up to four large spicules; segmental sensilla on short projections, about as long as vestiture, with between one and five thick, pale coloured, apical setae; sensilla 5–8 of abdominal segments 5–7 on longer fleshy projections than these sensilla on segments 1–4; projections tapering and coated in inconspicuous fine setae; abdominal segment 7 and anal segment tapering, and extended to about 1.5 times as long as abdominal segment 6; posterior breathing tube punctate above the transverse ridge and wider than the width of the pupal spiracles; posterior breathing tube short, not as long as width of the puparium.

Material examined – holotype: Male with puparium, Mexico, Chiapas State, Boquerón , 19 April 2002, ex fallen decaying bromeliad ( Bromeliaceae ), GER & MAM ( NMS) .

Material examined – paratypes: One male and two females with puparia, same data as holotype ( CIBIO, one female NMS) .

Etymology: The name of this species is descriptive of the name of the locality in Chiapas State, Mexico, where it was collected, Cerro Boquerón.

Taxonomic notes: Adult similar to other boqueronense group species. In the adult the main differences are in the face, with a vague central vitta, which is also present in C. mamorum . Other boqueronense group species have a clear and distinct black central vitta. C. boqueronense differs from C. mamorum in having black, not yellow, hairs on the face, mesonotum without vittae, and black-haired tergites 3 and 4. The larva is very similar to other boqueronense group species. The main difference is in the posterior breathing tube that is punctate above the transverse ridge, and wider than the width of the pupal spiracles. The posterior breathing tube is also punctate in C. mamorum , but in that species it is narrower, only about as wide as the pupal spiracles. The posterior breathing tube is also short in boqueronense , being less than the width of the puparium. In C. mamorum it is longer than the width of the puparium.

Biology: Reared from larvae found in a fallen, decaying bromeliad ( Bromeliaceae ).

Figures

Figures 11–14. Adult Copestylum, lateral view of the head; scale line = 3.5 mm. 11. Copestylum boqueronense sp. nov., male holotype; 12. Copestylum mamorum sp. nov., female holotype; 13. Copestylum triunfense sp. nov., male holotype; 14. Copestylum unamas sp. nov., male holotype.

Figures 47–52. Adult Copestylum, male genitalia; right- and left-hand figures scale line = 0. 50 mm, for middle column figures, left-hand scale line = 0.85 mm. 47–49. Copestylum boqueronense sp. nov., male holotype: 47. genitalia and associated structures, lateral view; 48. hypandrium, ventral view; 49. surstylus, ventral view. 50– 52. Copestylum triunfense sp. nov., male holotype; 50. genitalia and associated structures, lateral view; 51. hypandrium, ventral view; 52. surstylus, ventral view.