Bactrocera (Bactrocera) ellenriederae, Korneyev & Leblanc & Hauser & General & Gaimari, 2024

Korneyev, Severyn V., Leblanc, Luc, Hauser, Martin, General, David E. M. & Gaimari, Stephen D., 2024, Descriptions of two new species of Bactrocera Macquart (Diptera: Tephritidae: Dacinae: Dacini) from the Philippines with distinct orange medial stripes on the scutum, Zootaxa 5432 (4), pp. 573-599 : 578-579

Bactrocera (Bactrocera) ellenriederae new species

( Fig. 32 a–g )

Type material: 9 specimens.

Holotype. ♂ Philippines: Luzon, Camarines Sur, Mt. Isarog Natural Park , station at base; 13.66330 N, 123.33579 E, 600 m, 30.x.2019, cue-lure trap, (A.D. Young, N. Ellenrieder) ( CSCA19 L1356) | DNA Voucher 21N117, Tephritidae, Det. Apr. 2021 . (Deposited at PNM).

Paratypes: 5♂. same location and date (A.D. Young, N. Ellenrieder) ( CSCA19 L1356) ; 1 paratype deposited at UPLB ; 1 paratypes deposited at BPIM ; 2 paratypes deposited at USNM ; 1 paratype deposited at CSCA .

2♂. same location, hand netting (A.D. Young, N. Ellenrieder) ( CSCA19 L1358) ( CSCA) ;

1♂. same location, park entrance, 13.66286 N, 123.33399 E, 600 m, 30.x.2019; hand collecting (A.D. Young, N. Ellenrieder) ( CSCA19 L1362) ( CSCA) .

Differential diagnosis. Bactrocera ellenriederae belongs to the B. dorsalis complex, defined by having a mostly dark scutum, a costal band not expanded apically, and a black T-shaped pattern on the abdomen. The new species can easily be differentiated from all species in the complex by the following combination of characters: narrow elongate facial spots ( Fig. 32c ); two distinct red stripes on black scutum with significant additional red markings ( Fig. 32a ), red pattern present on subscutellum ( Fig. 32d ), dark brown T-shaped pattern on the abdomen with brown margins ( Fig. 32d ). This species differs from B. youngi by having more extensive red coloration on scutum, red subscutellum in the middle, and brown pattern on abdomen.

Description of adult. Head. Height 1.45 ± 0.15 (SE) (1.3–1.6) mm. Frons yellow with light brown area (sometimes absent) around orbital setae and on anteromedial hump, latter covered by short reddish-brown setulae; orbital setae dark brown: one pair of superior and two pairs of inferior fronto-orbital setae present lunule yellow. Ocellar triangle black. Vertex light brown. Face yellow with medium sized oval black spots in each antennal furrow; facial spots 0.25 ± 0.08 (0.17–0.33) mm long and width 0.12 mm ± 0.02 (0.1–0.14) mm wide. Gene yellow, with brown sub-ocular spot; reddish-brown seta present. Occiput ranging from dark brown to light brown, with yellow along eye margins; occipital row with 4–7 dark setae. Antenna with scape and pedicel yellow and first flagellomere yellow with brown outer surface; a strong yellow dorsal seta on pedicel; arista black, yellow basally.

Thorax. Scutum dark brown with red areas as two parallel stripes running from anterior margin to the level of wing base and as markings around notopleural suture and medial to postpronotal lobes. Pleural areas dark brown to reddish-brown. Yellow (can be white in preserved specimens) markings as follows: postpronotal lobe; notopleuron (notopleural callus); broad mesopleural (anepisternal) stripe, reaching level of anterior notopleural seta dorsally, continuing to katepisternum as a transverse spot, anterior margin slightly convex; anatergite yellow (posterior margin black); anterior 80% of katatergite yellow (remainder black); sharply tapering lateral postsutural vittae ending before level of intra-alar seta; red spot at base of prescutellar setae present in all the examined specimens. Postnotum reddish-brown medially and black laterally. Scutellum yellow except for narrow black basal band. Subscutellum black with red medially connected to medial red marking on black mediotergite. Setae (number of pairs): 1 scutellar; 1 prescutellar; 1 intra-alar; 1 posterior supra-alar; 1 anterior supra-alar; 1 mesopleural; 2 notopleural; 2 scapular; all setae well developed and reddish-brown.

Legs. Femora yellow; tibiae dark brown, mid-tibia with an apical black spur; tarsi dark brown.

Wings. Length 5.4 ± 0.1 (5.2–5.5) mm; basal costal (bc) and costal (c) cells colorless; microtrichia in outer corner of cell c only; remainder of wings colorless except moderately broad fuscous costal band covering all of subcostal cell and cell r 1, extending to about midway between apices of R 4+5 and M, extending narrowly beyond R 2+3 for most of its length or at least level of apex of vein R 1 and widening slightly as it crosses apex of R 2+3, to end between extremities of R 4+5 and M, a narrow brown anal streak ending at apex of posterior cubital cell; dense aggregation of microtrichia around A 1 + CuA 2; supernumerary lobe of medium development.

Abdomen. Elongate ovoid; pecten present on tergum III; posterior lobe of surstylus short; abdominal sternum V with a deep concavity on posterior margin. Tergum I and sterna I and II wider than long. Tergum I yellow with dark brown basomedially and dark brown along lateral margins; tergum II yellow except for a narrow transverse black band across anterior margin which extends to cover narrow lateral margins. Terga III–V brownish-orange with a narrow transverse dark brown to black band across anterior margin of tergum III, brown laterally on tergum III, anterolateral corners of terga IV and V brown, a narrow medial longitudinal brown band over all three terga. A pair of dark brown ceromata (shining spots) on tergum V. Abdominal sterna brown except for yellow sternum II.

Male terminalia: Similar to Bactrocera paraosbeckiae Drew, 2002 ( David & Ramani, 2019), a species not included in the key, surstyli long, 0.4 mm long.

Female. Unknown.

Male attractant. Cue-lure.

Etymology. This species is named after entomologist Dr. Natalia von Ellenrieder (PPD CDFA), who collected the type series of this species.

Notes. This species keys as far as couplet 80, in Drew and Romig (2016, page 240), and differs from B. lateritaenia Drew and Hancock by its distinct red stripes, the two sharply tapering lateral postsutural vittae ending before level of intra-alar setae, and the distinctive pattern on abdomen. The distinct species status is confirmed by COI sequences ( Fig. 34 ).

This species is very similar to B. youngi , differing from it by having more extensive red coloration on scutum, red subscutellum medially, and a brown pattern on the abdomen.

Figures

FIGURE 32. Bactrocera ellenriederae sp. n.—(a) male, head and thorax, dorsal view; (b) male, habitus, left-side lateral view; (c) male, head, frontal view; (d), male, abdomen, dorsal view; (e) wing; (f) male, epandrium, lateral view; (g) male, epandrium, ventral view; (h) glans and preglans lobe of male phallus, lateral view.

FIGURE 34. Phylogram based on data from mitochondrial gene (COI) as recovered by Maximum Likelihood method using General Time Reversible model. Support values are recorded on each node maximum likelihood bootstrap percentages (BT = 300). B. sp3 = Undescribed species of Bactrocera near B. bivittata.