Catostola martini ( Fisher, 1992 )

Camargo, Alexssandro, Vieira, Rodrigo & Rafael, José Albertino, 2023, Taxonomic review of Ctenodontina Enderlein, 1914 with the revalidation of Catostola Hull, 1958 (Diptera: Asilidae: Asilinae) and description of a new species, Zootaxa 5276, pp. 1-71 : 32-33

Catostola martini ( Fisher, 1992) comb. nov.

( Figs 18–21, 44)

Pachychoeta maya Martin, 1975: 87 , fig. 78.

Ctenodontina martini Fisher in Fisher & Hespenheide, 1992: 630, note 7 (combination and nomen novum for Ctenodontina maya ( Martin, 1975) , junior homonym of Ctenodontina maya Carrera & d’Andretta, 1953 ); Papavero, 2009: 30 (catalogue); Fisher, 2009: 619 (Manual of Central American Diptera ); Sánchez & Camargo, 2021: 278 (key).

Lecania maya ; Artigas & Papavero, 1995: 38 (catalogue).

Diagnosis. Face yellowish grey pruinose; mystacal macrosetae white, except by 5 dorsal black macrosetae ( Fig. 18C–D); second article of stylus long and slender, weakly enlarged subapically ( Fig. 19A–B); thorax brownish grey pruinose with dark brown pruinose paramedian stripes ( Fig. 18B); hind femur completely black ( Fig. 18A); terminalia shining black ( Figs 19E–G); S8 golden yellow to brown setose with a few long black macrosetae on mid-posterior projection ventrally and apically, mid-posterior projection rectangular ( Figs 19E, G, 20D); epandrium ending in a finger-like projection, pointed distally ( Figs 19E–G, 20E); gonocoxite sickle-shaped laterally ( Fig. 21D–E).

Redescription. Paratype male ( Figs 18–21). Head ( Fig. 18C–D): eyes black; face yellowish grey pruinose; mystacal macrosetae white, except by 5 dorsal black macrosetae ( Fig. 18C–D); subvibrissal macrosetae and setae white; gena yellowish white pruinose; palpus black with white macrosetae and setae; proboscis black, labial setae yellowish, proboscial setae white; antennal socket black, brownish yellow pruinose; frons brownish yellow pruinose; orbital setae black with a few dark brown and yellowish setae mixed; ocellar tubercle black, brownish yellow pruinose with a single, proclinate, dark brown setae; vertex brown pruinose; occiput white pruinose; 5–6 black postocular macrosetae, other dorsal occipital setae whitish; lateral occipital and lower occipital setae white, slightly branched. Antenna: scape and pedicel black, slightly reddish apically, black setose with a few yellowish setae ventrally on scape and pedicel, both sparsely yellowish pruinose; postpedicel black, brownish pruinose with 4–5 short yellowish setae dorsally at base; stylus black, first article minute, second article long and slender, weakly enlarged subapically ending in a reddish tip ( Fig. 19A–B).

Thorax ( Fig. 18A–B): brownish grey pruinose; antepronotum and postpronotum brownish grey laterally; scutum with a pair of dark brown pruinose paramedian stripes rounded anteriorly, laterally and fading after postsutural spots; pre and postsutural spots and prescutellar spots dark brown pruinose; scutum laterally after paramedian stripe, yellowish pruinose, median stripe, transverse suture and posterior area of scutum brownish grey pruinose; triangular apruinose black spot at posterior scutal margin; postalar wall and scutellum brownish grey pruinose ( Fig. 19D); pleura greyish pruinose, except anterodorsal part of proepimeron and anepisternum brownish grey pruinose. Chaetotaxy: antepronotal macrosetae and setae yellowish; 2 notopleural; 2 supra alar; 1 postalar and 5 pairs of dorsocentral postsutural black macrosetae; scutum with short black acrostichal setae; scutellum with short sparse black discal marginal scutellar setae ( Fig. 19D); anepisternum with short, thin yellowish and black setae dorsally; katatergite with white macrosetae and setae; remainder of pleura with thin and very sparse whitish setae.

Wings ( Fig. 19C): brownish translucent; veins dark brown, reddish at base of wing; R 4 slightly rounded in the junction with R 5; bifurcation of R 4 and R 5 beyond discal cell at a distance equivalent to the length of two crossvein r-m; crossvein r-m shortly after the middle of discal cell at a distance equivalent to the length of one crossvein m-m; cells m 3 and cua closed before wing margin. Halteres: dark yellow, knob dark brown at base.

Legs ( Fig. 18A): coxae and trochanters black, greyish pruinose; fore femur yellow, mid femur yellow with apical third black; hind femur black; fore tibia yellow, only slightly reddish apically; mid tibia dark yellow on basal half and dark reddish on apical half becoming dark brown apically; hind tibia black with a yellow spot posterodorsally on basal half; tarsi black, except first tarsomere of fore and mid tarsi dark reddish brown. Chaetotaxy: coxae with white macrosetae and setae; hind trochanter with 3 posterior yellow macrosetae; fore femur with 11–12 ventral yellowish macrosetae; mid femur with 4–5 ventral (yellowish), 5 anteroventral (proximal yellowish), 3 anterior, 1 posterodorsal preapical and 3 posterior (all yellow) black macrosetae; hind femur with 1 anteroventral preapical, 2 anterior (proximal yellow), 1 anterodorsal preapical, 1 posterodorsal preapical black macrosetae; fore and mid femora black setose anterodorsally and yellowish posteroventrally, hind femur yellowish setose, only a few black setae anterodorsally subapically; fore tibia with black macrosetae and short sparse yellowish setae, only a few black mixed; mid tibia with black macrosetae and short setae, only a few yellowish mixed; hind tibia with black macrosetae and short setae; tarsi with black macrosetae and setae; brush setae golden reddish yellow; pulvilli and empodium dark reddish; claws black, dark reddish basally.

Abdomen ( Fig. 18A–B): black, dark brown pruinose, except laterally on T1–5 with grey pruinosity forming triangular spots at posterior corners and almost connecting at mid-posterior margin; T6 and 7 almost completely grey pruinose, except mid-dorsally dark brown pruinose; T1 with 6 white marginal lateral macrosetae and a tuft of long white setae; T2–3 with 4 white lateral marginal macrosetae; T5 and 6 only with long white setae at posterior margin; other short appressed dorsal setae whitish, lateral setae white; sternites greyish white pruinose; sternites sparsely white setose.

Terminalia ( Figs 19E–G, 20, 21): shining black, except cercus dark brown, posterior half of gonocoxite and gonostylus and anterior mid-ventral part of S8 dark reddish brown ( Fig. 19G); T8 black setose, a few reddish brown setae at posterior corners; cercus reddish brown setose ( Figs 19E–F, 20F); S8 golden yellow to brown setose with a few long black macrosetae on mid-posterior projection ventral and apically, mid-posterior projection rectangular ( Figs 19E, G, 20D); epandrium with long and thin black setae at mid-anterior dorsal margin and a few short black setae at anterior ventral margin, and with 2 reddish yellow macrosetae mid ventrally, epandrial apical finger-like projection with short yellow setae apically ( Fig. 19E–G) ending in a pointed tip ( Fig. 20E); hypandrium with a concave indentation at posterior margin ( Fig. 20G); gonocoxite curving upwards at mid-length and strongly tapering towards the rounded tip, sickle-shaped laterally ( Fig. 21D–E), with a short condyle dorsally ( Fig. 21D–E); which connects to the epandrial arm; gonocoxal apodeme straight ( Fig. 21A–E); gonostylus constricted sub-apically forming a conic, rounded tip, blade-like ventrally ( Fig. 21F); ejaculatory apodeme fan-shaped, directed posteriorly; phallus with prongs long and thin ( Fig. 21A, G); cercus and subepandrial sclerite short with rounded apex ( Fig. 21H–I).

Length. Body: 16.5 mm; wing: 12 mm.

Female. According to Martin (1975): “…similar to the male, lateral margin of tergites more extensively grey than in male, the keel of S8 with spines, hypoproct with spines ventrally, numerous thin setae obscure the keel…” Female specimens of this species were not available for this study.

Variation. Hind femur with 2 anteroventral preapical black macrosetae.

Taxonomic discussion. In the examined paratypes 2 supra alar macrosetae were observed. However, a second and stout macrosetae can be observed in specimens of other Catostola species indicating that this character can be highly variable. Catostola martini comb. nov. can be distinguished from other species mainly by the combination of the following characteristics: the absence of a femoral swelling on hind femora of males ( Fig. 18A); hind femora entirely black ( Fig. 18A); the epandrium with a finger-like projection ( Figs 19E, 20E) and the S8 with a mid-posterior rectangular projection ( Figs 19G, 20D).

Distribution ( Fig. 44). Mexico (Chiapas, Yucatán) and Guatemala (Escuintla, Suchitepéquez).

Material examined. Paratypes. Musté [15°15′45″N 92°24′07″W], Chiapas, MEX [ ICO], 15.viii.1968, E.C. Welling M . / PARATYPE Pachichoeta maya Chas. H. Martin ( Fig. 18A [insert]) (1♁ MZUSP); Musté , Chiapas, MEXICO, vii.25.1969 / PARATYPE Pachichoeta maya Chas. H. Martin (1♁ MZUSP) . Additional material. Variedades [14°24′59″N, 91°15′59″W], Such.[itepéquez] [Departamento] GUATE . [MALA] 500 ft. i-ix-1947 (1♁ AMNH) .