Eugaedioxenis haematodes (Villeneuve, 1937) Cerretti & O’Hara & Winkler & Lo Giudice & Stireman, 2015

Cerretti, Pierfilippo, O’Hara, James E., Winkler, Isaac S., Lo Giudice, Giuseppe & Stireman, John O., 2015, Two tribes hidden in one genus: the case of Agaedioxenis Villeneuve (Diptera: Tachinidae: Exoristinae), Organisms Diversity & Evolution (New York, N. Y.) 15 (3), pp. 489-512 : 494-501

publication ID	https://doi.org/ 10.1007/s13127-015-0211-0
publication LSID	lsid:zoobank.org:pub:0C53D317-5C05-45D7-A9E4-FB6E6D6F28DE
persistent identifier	https://treatment.plazi.org/id/038587E4-FFBE-2941-FCC1-FC2FFCF8CEA0
treatment provided by	Felipe
scientific name	Eugaedioxenis haematodes (Villeneuve, 1937)
status	comb. nov.

Treatment

Eugaedioxenis haematodes (Villeneuve, 1937) View in CoL , comb. nov.

( Figs. 1a–b View Fig , 2e–f View Fig , 4a, f View Fig , 5a–b View Fig , 6f View Fig )

Gaedioxenis haematodes Villeneuve, 1937: 207 . Holotype male (CNC). Type locality: South Africa, Western Cape, between Somerset West and Strand [according to label data; published as “Colonie du Cap” (i.e., former Cape Province)].

Gaedioxenis haematodes View in CoL : Crosskey (1980: 878), Afrotropical catalogue; Crosskey (1984: 288, 291), in key to genera of tropical and southern Africa.

Type material examined. Holotype ♂: ♂ // Somerset / W. Strand / Dr. Brauns. / Kapland [Cape of Good Hope] // Gaedioxenis / haematodes / Typ. Villen [label handwritten by Villeneuve] // Gaedioxenis / haematodes Vill. [handwritten by Mesnil] / L.P. Mesnil det., 1969 // TYPE [red label] // EX / L.-P. MESNIL / COLLECTION 1970 [ CNC, in good condition except missing right fore leg]. Other material examined. 1♂, “Capland” [ South Africa, Western Cape], Stellenbosch, 11.x.1925, Dr. H. Brauns ( NMDA). 1♀, same data except xi.1924 ( NMDA). 3♂♂, 1♀, [ South Africa, Northern Cape], Calvinia District, Brandkop area, 14.x.1964, B. & P. Stuckenberg ( NMDA).

Description.

Body length: 8–12 mm.

Male.

Colouration ( Figs. 1a–b View Fig ; 4a–b, f View Fig ): Head ground colour black except genal groove, face, facial ridge and frontal vitta which are red. Head covered with whitish-grey reflecting microtomentum. Scape and pedicel reddish yellow; postpedicel and arista black. Palpus yellow. Thorax (except scutellum) black with light grey reflecting microtomentum; scutellum varying from red on apical 2/3 to almost entirely red. Presutural area of scutum with 4, well outlined, dark vittae (lateral pair subtriangular, median pair straight and narrow); postsutural area of scutum, when viewed from behind, with 5 dark vittae, 3 extending length of postsutural area and 2 on anterior portion only and continuous with median pair on presutural area. Femora and tarsi black, tibiae yellow. Tegula black; basicosta yellow. Wing membrane mostly hyaline,

(paratype). e–f Agaedioxenis setifrons (Villeneuve) , habitus in lateral view: e male; f female (holotype)

shading into yellowish antero-proximally. Abdomen mostly red with a median longitudinal dark vitta usually extending to tip of tergite 5 (median vitta tapers posteriorly, ending before posterior margin of tergite 5 in two examined specimens). Weak, grey reflecting micromentum present dorsally from syntergite 1+2 to tergite 5, without forming a distinct basal band.

Head ( Figs. 1a View Fig ; 2e View Fig ): Compound eye covered with scattered ommatrichia, irregular in length (longest ommatrichia are at most as long as 4 eye facets). Frons 1.3–1.4 times as wide as compound eye in dorsal view. Inner and outer vertical setae long and robust in both sexes (outer vertical seta lateroclinate). Ocellar seta strong, proclinate. Fronto-orbital plate with only fine setulae lateral to frontal setae. Two upper reclinate orbital setae (only 1 in one specimen). Two strong proclinate and 2 strong lateroclinate orbital setae. Parafacial flat, at its narrowest point 1.1–1.3 times as wide as postpedicel; parafacial covered with fine, long, black setulae. Facial ridge usually slightly concave, with robust decumbent setae on low- er 1/4–1/3. Vibrissa strong, arising slightly above level of e–f Eugaedioxenis gen. nov. haematodes (Villeneuve) head in lateral view: e male; f female. g–h Eugaedioxenis horridus gen. et sp. nov. head in lateral view: g male (holotype), h female (paratype)

lower facial margin. Face flat. Lower facial margin slightly visible in lateral view. Postpedicel 1.7–2.0 times as long as pedicel. Arista apparently bare, thickened on basal 2/5. First aristomere shorter than wide; second aristomere about 1.0–1.5 times as long as wide. Genal dilation well developed. Gena in profile 0.27–0.33 times as high as compound eye. Occiput convex; posterodorsal portion of occiput with 1–2 irregular rows of black setulae behind postocular row. Rest of occiput and postgena almost entirely covered with fine, pale setae. Palpus long and narrow, sub-cylindrical. Prementum slender, 0.7–0.8 times as long as height of head.

Thorax: Four or 5 postpronotal setae, 3 strong, basal setae arranged in a straight line; 1 strong anterior seta arising in front of mid basal one; 1 additional postpronotal seta usually present between and slightly posteriorly to the line of outer basal and mid basal postpronotal setae. Scutum with 3 + 3

succulentus sp. nov. head in lateral view: g male (holotype); h female. i Agaedioxenis timidus sp. nov., male (holotype) head in lateral view. j–k Male left hind tibia in posterodorsal view: j Agaedioxenis kirkspriggsi sp. nov. male (holotype); k Agaedioxenis brevicornis (Villeneuve)

acrostichal setae; 3+3 dorsocentral setae; 1+3 intra-alar setae; 1 or 2 posthumeral setae; 1 + 3 supra-alar setae (first postsutural supra-alar seta longer than notopleural setae); notopleuron with 2 strong setae, equal in length and thickness; postalar callus with 2 or 3 setae [when 3, then 1 is weaker than notopleural setae]. Anatergite bare. Prosternum with several long setulae on lateral margin. Proepisternal depression bare. Katepimeron bare or nearly so. Usually 3 katepisternal setae (nearly in line) [holotype with 4 setae on right side, fourth seta below middle seta]. Anterior and posterior lappets of metathoracic spiracle unequal in size (posterior lappet larger, operculum-like). Scutellum with 1 pair of crossed apical setae (standing slightly erect), varying from 1/2 (holotype) to 2/3 as long as subapical setae; 1 pair of subapical setae, 1 pair of lateral setae, and 1 pair of basal setae; lateral and subapical setae strong and subequal in size; 1 pair of widely separated discal abdomen in lateral view showing the sexual patches: f Eugaedioxenis gen. nov. haematodes (Villeneuve) ; g Agaedioxenis brevicornis (Villeneuve)

se ta e; p re ap ic al s eta e ab se nt. P os tmet ac ox al are a membranous.

Legs: Fore tibia with 2–3 strong posterior setae. Preapical anterodorsal seta of fore tibia well developed, about 2/3 as long as preapical dorsal seta. Fore claws about as long as fifth tarsomere (sometimes slightly longer). Mid tibia with 3–5 anterodorsal setae. Submedian ventral seta of mid tibia present. Hind tibia with several anterodorsal setae, irregular in size (i.e., not forming a comb-like row). Preapical posteroventral seta of hind tibia moderately well developed, varying from 1/2 to 2/3 as long as preapical anteroventral seta. Hind tibia with 4 dorsal preapical setae.

Wing: Costal spine well developed, about 1.5 times as long as crossvein r-m. Vein R 4+5 with 2–3 setulae at base. Bend of vein M nearly right-angled. Costal sector cs 2 ventrally bare. Costal sector cs 4 about as long as cs 6. Section of M between crossveins r-m and dm-cu clearly longer than section between dm-cu and bend of M. Section of M between dm-cu and bend of M shorter than postangular section of M. Cell r 4+5 closed at wing margin or short petiolate. Wing membrane uniformly covered with microscopic setulae.

Abdomen ( Fig. 4f View Fig ): Ventral edges of syntergite 1+2 and tergites 3 and 4 entirely overlapping the corresponding sternites. Mid-dorsal depression of syntergite 1+2 not extending posteriorly to hind margin of syntergite (i.e.,

posterior (e) and lateral (f) view. Scale bar 0.2 mm. [red arrow indicates postero-proximal lobe of surstylus. Colour coding: green = cerci; yellow = surstylus]

confined to approximately anterior 4/5). Syntergite 1 +2 with 2 pairs of median marginal setae (inner median pair less than half as long as outer median pair, and only barely noticeable in holotype), and 1 pair of lateral marginal setae; tergite 3 with 3 pairs of median marginal setae (inner median pair 1/3–2/3 as long as outer median pairs), and 2 pairs of lateral marginal setae; tergite 4 with a complete row of regular marginal setae; tergite 5 covered with erect setae, not arranged in rows. Tergites 3 and 4 with several median discal setae about as long and robust as inner median marginal setae. Tergites 4 and 5 ventrally with sexual patches (i.e., patches of appressed fine setulae with underlying glandular organs) ( Fig. 4f View Fig ; cf. Cerretti et al. 2014a) (barely visible patches sometimes also on tergite 3 [incl. holotype]). Tergite 5 about 0.9–1.0 times as long as tergite 4.

Male terminalia: Tergite 6 more or less plate-like but indented anteriorly at mid point, not fused with segment 7. Syntergosternite 7+8 relatively narrow. Sternite 6 asymmetrical and right side connection to segment 7 narrowly membranous. Sternite 5 with anterior margin almost straight; posterior margin with a deep median U-shaped cleft. Membranous transverse band on sternite 5 well developed. Epandrium short and convex. Lateral epandrial lobe not developed. Cerci in posterior view long and narrow, distally only slightly separat- ed ( Fig. 5a View Fig ). Surstylus well developed, only slightly shorter than cerci, more or less lobe-like in lateral view ( Fig. 5b View Fig ), not fused with epandrium; with several short setulae on lateral and medial surfaces. Bacilliform sclerite rod-shaped and narrowly apodeme in lateral view. [Arrow indicates median, proximal apophysis of surstylus. Colour coding (a–d): green = cerci; yellow = surstylus. Abbreviations (e–g): bp basiphallus, bs bacilliform sclerite, c cerci, dp distiphallus, e epandrium, edsd extension of dorsal sclerite of distiphallus, ep epiphallus, es ejaculatory apodeme, hy hypandrium, lv lateroventral region of distiphallus, ph phallus, pha phallapodeme, s surstylus.]

fused to surstylus anterobasally; surstylus with a long and narrow median, proximal apophysis ( Fig. 6f View Fig ). Hypandrial arms not fused posteromedially. Pregonite well developed, sub-triangular, moderately hook-shaped distally and provided with fine setulae along posterior margin. Postgonite narrow, distally rounded and gently bent anteriorly. Intermedium well developed. Ejaculatory apodeme present, small. Basal processes of basiphallus present. Epiphallus well developed and arising dorsally on basiphallus, in sub-basal position. Ventral wall of distiphallus concave. Lateroventral region of distiphallus sclerotized. Medioventral ridge of distiphallus not developed. Extension of dorsal sclerite of distiphallus well developed ( Fig. 6g View Fig ).

Female ( Figs. 1b View Fig , 2f View Fig ).

Oviscapt slightly elongated and telescopically retracted within segment 5 ( Fig. 7d); egg membranous, macrotype. Eggs are stored fully embryonated within a long and spiralling common oviduct.

For other characters, female differs from male as follows:

Thorax: Fore claws 0.5–0.7 times as long as fifth tarsomere. Abdomen: Tergite 5 sub-conical, 1.1–1.3 times as long as tergite 4 ( Fig. 4a View Fig ).

Distribution. Afrotropical: South Africa (Northern Cape, Western Cape).

Eugaedioxenis horridus Cerretti , O’ Hara and Stireman,