Blepharoneura io Giglio-Tos

Norrbom, Allen L. & Condon, Marty, 2010, Revision of the femoralis group of Blepharoneura Loew (Diptera: Tephritidae) 2374, Zootaxa 2374 (1), pp. 1-139 : 75-76

Blepharoneura io Giglio-Tos

Fig. 40

Blepharoneura io Giglio-Tos 1893: 10 ; Giglio-Tos 1895: 57 [type data; additional description]; Hendel 1914: 21 [in key, in catalog]; Aczél 1950: 196 [in catalog]; Foote 1967: 18 [in catalog]; Norrbom et al. 1999: 105 [in catalog].

Diagnosis. This species differs from all other species of Blepharoneura by the hyaline marginal markings of cell r1, which are subequal and nearly evenly spaced. Other useful diagnostic characters include: Scutum with 2 pairs of brown vittae; scutellum dorsally with inverted U-shaped brown mark (probably varies as a pair of separate spots); notopleuron and anepisternum without brown markings; cells r2+3 and r4+5 each with 2 separate marginal hyaline marks; and the latter without a posterior hyaline spot aligned with hyaline marks in cell m. The female is unknown.

Description. Head: Dark brown area on ocellar tubercle extended less than half distance to postocellar seta. Occipital suture narrowly red brown.

Thorax: Scutum entirely microtrichose (surface of holotype largely obscured by debris, but clean areas are microtrichose), with 2 pairs of dark brown vittae, both interrupted posterior to transverse suture and not connected to mark on posterior margin; posterior margin with 1 broad dark brown mark narrowed medially. Notopleuron and sides of scutum without brown markings except for faint brown spot lateral to dorsolateral corner of scutellum. Scutellum with single inverted U-shaped dark brown medial mark, extended to basal margin. Subscutellum and mediotergite with pair of dark brown vittae. Pleuron entirely yellow. Basalare entirely yellow. Dorsocentral seta aligned with postalar seta.

Legs: Entirely yellow.

Wing ( Fig. 40 ): Length 4.65 mm, width 2.48 mm, ratio 1.92. Crossvein r-m at 0.58 distance from bm-cu to dm-cu. Cell c with 2 rectangular hyaline spots, both reaching costa and subcosta; medial brown area almost as dark as area of cell r1 posterior to pterostigma, paler anteriorly, approximately as broad as both hyaline spots. Pterostigma with large hyaline subapical spot [#3], sometimes reaching R1. Cells r1 and r2+3 basally (proximal to apex of R1) only with diffuse spot in r1 posterior and slightly distal to apex of vein Sc. Radial cells medially with 2 relatively narrow basal marginal hyaline marks in cell r1, narrowly connected anteriorly, basal mark [#5] tapered and reaching vein R2+3, distal mark reaching or almost reaching R2+3; cell r2+3 with small hyaline spot [#8] aligned with basal mark in r1 and broad spot [#9] aligned with second mark in r1; cell r4+5 with small hyaline spot [#14] in anterior half of cell between r1 marks, not reaching R4+5 and less than 1/4 width of cell, and with hyaline spot [#15] near anterior end of dm-cu moderate sized, slightly distal to dm-cu. Distally cell r1 with 1 large marginal hyaline spot [#6], closer to second proximal marginal hyaline spot than to apex of vein R1. Cell r2+3 with 2 elongate marginal hyaline marks [#10, 11], both extending to vein R4+5. Cell r4+5 with 2 marginal hyaline marks, posterior one [fused #18 plus additional spot] elongate, proximally directed, anterior one [fused #16, 18A] similar and extended to level of distal mark in cell r2+3, or (on right wing) divided into smaller, rounded subapical [#16] and marginal [#18A] spots. Cell m with 3 moderate sized hyaline spots, 2 marginal [#27, 29] and 1 anteromedial [fused #26, #26A], none extended to vein M. Cell br with subbasal hyaline spot [#12]. Cell bm with small circular subbasal and subapical spots [#19, #20]. Posteromedial part of wing with hyaline spots mostly isolated; cell br with subapical spot [#13]; cell dm with elongate subbasal mark [fused #51, #52] across cell, connected with anterior proximal spot in cell cu1 [#31], with isolated anterior spot [#21] aligned slightly distal to or (right wing) aligned with and connected to subapical spot in br; dm also with broad spot posteromedially [fused #22, #23, #24]; cell cu1 medially with 3 anterior and 2 marginal spots, proximal anterior spot [#31] aligned with proximal band in dm, medial and distal anterior spots [#32, #33] aligned with posteromedial spot in dm and narrowly separated from proximal marginal mark [fused #34, #39] across apex of vein A1+Cu2 and medial marginal mark [#36]; subapical marginal spot [#37] moderately large, almost reaching vein Cu1. Cell dm with subapical hyaline spot [#25] moderate sized, not extended to vein M.

Abdomen: All tergites with pair of submedial dark brown spots, isolated except on tergite 5. Syntergite 1+2 with pair of posterolateral dark brown bands. Tergites 3–4 with paired irregular dark brown posterolateral marks, separated medially, formed by fused sublateral spot and posterolateral band, extending only slightly anteriorly on lateral margin. Tergite 5 with pair of isolated dark brown spots and with pair of posterolateral bands, narrowly connected to submedial spots.

Male terminalia: Medial surstylus with prensisetae subequal, separated by several times width of medial prensiseta, medial prensiseta on moderately long lobe, lateral prensiseta on short lobe.

Distribution. Mexico (Veracruz). The type locality is at about 1200 m elevation.

Type data. Holotype ♂ ( IMZ), MEXICO: Veracruz: Tuxpango [18°49'N 97°01'W], [1855–56?], Sumichr. [A. L. J. de Sumichrast] [examined]. The holotype has labels with "867", "101.", and, in Giglio-Tos' writing, " Blepharoneura Io Giglio-Tos ♂ ".

Figures

FIGURES 36–45. Wing: 36–37, B. hirsuta Guyana: Moraballi Creek, USNMENT00213793; Brazil: Rio de Janeiro, USNMENT00213794); 38–39, B. hyalinella (Bolivia: Apa Apa, USNMENT00055933, USNMENT00055940); 40, B. io (holotype); 41, B. isolata (holotype); 42, B. lutea (Costa Rica: SW Rincon, USNMENT00213791); 43–44, B. macwilliamsae (Zurqui, USNMENT00048601, USNMENT00048483); 45, B. marshalli (Argentina: Yuto, USNMENT00213860).