Copestylum mamorum, 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 : 294-296

014. COPESTYLUM MAMORUM SP. NOV.

ROTHERAY & MARCOS- GARCÍA

Diagnosis – female holotype: Face with vague central vitta and coated in yellow hairs; cheeks coated in dust and pruinosity; genae with dark vittae and coated in pruinosity ( Fig. 12 ); frons darker than face with black hairs medially; eyes coated in yellow hairs; mesonotum with black and yellow vittae, without a triangular yellow spot on the posterior margin; hairs of mixed length; yellow hairs anteriorly, and black and yellow hairs posteriorly; six 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 yellow except for base of femorae and midsection of hind tibiae; legs black haired except for yellow hairs on the ventral surface of the tarsi and posterior margin of mid-tibiae; abdomen yellow except for dark posterior margins of tergites 2 and 3; tergite 4 fuscous; tergite 1 yellow haired, tergites 2–4 yellow haired anteriorly and black haired posteriorly; hairs becoming gradually longer from tergite 2–4; sternites 1–3 yellow with yellow hairs; sternite 4 fuscous with black hairs; male unknown. Length: body, 12 mm; wing, 10 mm (N = 2).

Diagnosis – puparium: Anterior fold with a band of pale, brown-tipped 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, as wide as the width of a pupal spiracle; posterior breathing tube elongate, more than the width of the puparium.

Material examined – holotype: Female with puparium, Mexico, Chiapas, Boquerón , 18 July 2003, ex fallen decaying bromeliad ( Bromeliaceae ), GER ( NMS) .

Material examined – paratype: Female with puparium, same data as holotype ( NMS) .

Etymology: The name of this species is descriptive of the name of the ethnic population living at the type locality, Boquerón, in Chiapas State, Mexico.

Taxonomic notes: Adult and larva 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. boqueronense . Other boqueronense group species have a clear and distinct black vitta. C. mamorum differs from C. boqueronense in having yellow, not black, hairs on the face, vittae on the mesonotum, and tergites 3 and 4 with a band of yellow hairs anteriorly. The puparium can be distinguished by features of the posterior breathing tube that is punctate above the transverse ridge, and is only as wide as the width of a pupal spiracle. The posterior breathing tube is also punctate in C. boqueronense , but in that species it is wider than the pupal spiracles. The posterior breathing tube is also long in C. mamorum , being more than the width of the puparium. In C. boqueronense it is shorter 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.