Blepharoneura osmundsonae Norrbom & Condon, 2010

Norrbom, Allen L. & Condon, Marty, 2010, Revision of the femoralis group of Blepharoneura Loew (Diptera: Tephritidae) 2374, Zootaxa 2374 (1), pp. 1-139 : 92-94

Blepharoneura osmundsonae Norrbom & Condon , new species

Figs. 52 , 182–183

Diagnosis. This species belongs to the femoralis complex (see diagnosis of B. femoralis ), species of which are difficult to distinguish except by aculeus shape. That of B. osmundsonae has the most elongate tip of the species of the complex (lobed part more than 0.60 times as long as wide) and it is somewhat rounded proximal to the lateral lobe. The lobes are small but acute and similar in size. The scales of the medial membrane are present only dorsally and are plate-like except proximally, differing from other species of the complex (except one female of uncertain identity; see Remarks for B. biseriata ).

Description. Head: Dark brown area on ocellar tubercle not extended posteriorly [specimens teneral?] or extended more than half distance to postocellar seta. Medial vertical seta in yellow area. Medial occipital sclerite with pair of dark brown submedial vittae on ventral half. Occipital suture narrowly dark brown, usually (except 1 specimens) on lateral side bordered by slightly paler band, extended dorsolaterally to postocular setae but well separated dorsally from lateral vertical seta.

Thorax: Scutum nonmicrotrichose except posterior to dorsocentral seta, laterally, and sometimes anteriorly medial to and lateral to submedial vitta, or often sparsely microtrichose on posterior half to 2/3 of postsutural sublateral vitta; scutum also with 2 pairs of dark brown vittae or rows of spots; submedial vitta interrupted or (1 specimen) narrowed slightly posterior to transverse suture and not connected to mark on posterior margin; sublateral vitta broadly interrupted at transverse suture and separated from mark on posterior margin; posterior margin with 1 broad brown mark narrowed medially. Notopleuron with dark brown vitta on lateral margin. Small brown spot anterior to postsutural supra-alar seta usually present, sometimes faint or (3 specimens) absent. Brown vitta anterior to postalar seta and brown spot lateral to dorsolateral corner of scutellum present. Scutellum with pair of submedial brown marks or single inverted Ushaped medial mark usually extended to basal margin. Subscutellum and mediotergite with pair of dark brown vittae, mediotergite also with lateral margin on ventral half narrowly brown. Pleuron mostly dark brown, yellow only on propleuron, most of anepisternum (except large dorsomedial dark brown spot extending ventrally at least to level of anterior seta but not more than midway to ventral margin, and narrowly in posteroventral corner), extreme posterior corner of katepisternum and sometimes irregular anterodorsal area, all of katepimeron, greater ampulla, narrow dorsal, ventral and posterior margins of anepimeron, and narrow dorsal margins of katatergite and anatergite expanding to larger spot posterodorsally on katatergite and anteriorly on anatergite. Basalare brown. Dorsocentral seta aligned with or usually slightly anterior to postalar seta.

Legs: Mostly yellow. Mid femur occasionally with anteroventral and posteroventral dark brown marks on apical 1/5. Hind femur with entire apical 1/5 dark brown.

Wing ( Fig. 52 ): Length 5.94–6.60 mm, width 2.87–3.10 mm, ratio 2.06–2.13. Crossvein r-m at 0.55–0.60 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 to distinctly paler than area of cell r1 posterior to pterostigma, distinctly narrower or (1 specimen) almost as broad as both hyaline spots. Pterostigma with subapical hyaline spot [#3], often reaching R1 (small in 3 of 9 specimens). Cells r1 and r2+3 basally (proximal to apex of R1) with 1–3 and 0– 2 (usually 0) pale brown or hyaline spots, respectively. Radial cells medially with 1 broad quadrate basal hyaline mark [#5 fused with additional spot?] in cell r1, usually partially divided posteriorly by brown spot, or with 2 narrower hyaline marks; cell r2+3 with 2 hyaline spots [#8, #9] aligned with r1 mark(s), sometimes connected, both extending across cell, distal spot broader; cell r4+ 5 in anterior half with small to moderately large hyaline spot [#14] aligned with middle of r1 marks, at most slightly more than half as wide as cell, and with medial hyaline spot [#15] near anterior end of dm-cu small; occasionally (2 of 9 specimens) with small to minute anterior hyaline spot [#48] near midlength not touching vein R4+5. Distally cell r1 usually with 1 marginal subapical hyaline spot [#6] (absent on 1 wing of 2 specimens). Cell r2+3 with 2 marginal ovoid hyaline spots and usually with 1 smaller subapical spot posterior to proximal spot (absent in 1 of 9 specimens) [divided #10, #11]. Cell r4+5 usually with small hyaline spot [#16] anteriorly (absent in 2 of 9 specimens), aligned between apical marks in cell r2+3; with 1 or usually (6 of 9 specimens) 2 posterior ovoid hyaline spots, if only 1 present aligned between marks in cell m or with proximal mark; and with 2 ovoid marginal or submarginal hyaline spots, in 1 specimen connected to form bilobed mark [#18, #18A]. Cell m without subbasal hyaline spot [#49] near midlength of dm-cu; with 2 large marginal hyaline spots [#27, #29] and 1 large anteromedial spot [fused #26, #26A], proximal and anteromedial spots sometimes connected or fused to form band, usually not extending to vein M. Cell br with subbasal hyaline spot [#12]. Cell bm sometimes with subbasal hyaline spot [#19], with large circular subapical hyaline spot [#20]. Cell bcu usually with hyaline spot in lobe. Posteromedial part of wing with large hyaline areas; cell br with subapical hyaline spot [#13] and usually with smaller more proximal spot [#44]; cell dm with broad and long hyaline area [fusion of at least #51, #52, #21, #22, #23, #24, #50], sometimes narrowly or partially divided by pale brown into 2–3 spots, tapered distally, extending farther posteriorly than anteriorly; cell cu1 medially with broad anteriorly trilobed and posteriorly bilobed mark [fused #31, #32, #33, #34, #36, #36A], broad on posterior wing margin, sometimes with proximal anterior spot [#31] separate from rest of mark; subapical marginal hyaline spot [#37] reaching vein Cu1. Cell dm with separate anteromedial subapical hyaline spot [#25], rarely (Valle de Bravo ♀) with posterior subapical spot proximal to level of subapical mark in cell cu1 and connected to proximal hyaline area.

Abdomen: Syntergite 1+2 sometimes with isolated pair of submedial brown spots, but usually spot narrowly connected to posterolateral brown area to form irregular mark. Tergites 3–5 with typical 2 pairs of spots, L-shaped posterolateral bands, and often anterolateral spots; sublateral spots and posterolateral bands fused, except sometimes on tergite 5, to form pair of irregular, medially separated brown marks; submedial spots usually isolated, and anterolateral spots, if present, isolated.

Female terminalia: Oviscape entirely dark brown; length 1.00– 1.40 mm. Aculeus ( Fig. 182–183 ) 0.70– 0.86 mm long, 2.39–2.61 times as long as wide, medial membrane with plate-like polygonal scales dorsally, becoming acute proximally, ventrally without scales; tip rounded basolaterally, elongate triangular (lobed part 0.63–0.66 times as long as wide), with small, weakly trilobed medial lobe and 3 pairs of small, acute, somewhat step-like, distally directed lobes separated by relatively shallow gaps; sublateral and submedial lobes similar in size. Spermathecae subspherical, with straight slender sclerotized neck and usually with large cylindrical basal apodeme (apodeme absent in 2 of 3 spermathecae of Valle de Bravo ♀) (similar to B. femoralis ).

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 ( Mexico). The holotype was collected at nearly 2700 m elevation.

Type data. Holotype ♀ ( MSUL USNMENT00213953 ), MEXICO: Mexico: El Yukon , 20 km W of Toluca, 8800 ft. [2683 m], 4 Aug 1962, G. L. Bush . Paratypes: Same data as holotype, 1♂ 2♀ ( MSUL USNMENT 00213955– 56 , USNMENT00213961 ); same, except 8 Aug 1962, 1 ♂ ( MSUL USNMENT00213958 ) 1♂ 2♀ ( USNM USNMENT00213954 , USNMENT00213957 , USNMENT00213959 ). M EX I C O: M e xico: Va lle de B r avo [19°11'N 100°08'W], 7 Oc t 19 62, F. P acheco, 1♀ (I E X V USNMENT00213962).

Etymology. The name of this species is a noun in the genitive case named for Erika Osmundson, a student at Cornell College who helped with this revision by devoting a summer to sketch the male terminalia of numerous species.

Figures

FIGURES 46–55. Wing: 46–47, B. mexicana (Mexico: S Chapingo, USNMENT00213806; holotype); 48, B. mikenoltei (holotype); 49, B. multipunctata (holotype); 50, B. nigriapex (Bolivia: Apa Apa, USNMENT00055930); 51, B. nigrifemur (Bolivia: Apa Apa, USNMENT00055923); 52, B. osmundsonae (Mexico: El Yukon, USNMENT00213961); 53–54, B. punctistigma (Mexico: Los Tuxtlas, USNMENT00213875; El Triunfo, USNMENT00213913); 55, B. quadristriata (Mexico: Los Tuxtlas, USNMENT00213849).

FIGURES 182–187. Aculeus: 182–183, B. osmundsonae (Mexico: Valle de Bravo, USNMENT00213962; Mexico: El Yukon, USNMENT00213953); 184–187, B. splendida (Mexico: San Blas, USNMENT00213873; Salto de Eyipantla, USNMENT00213877; Guatemala: Pochuta, USNMENT00213874; Venezuela: Rancho Grande).