Macroocula atuberculata Soliman & Gadallah, 2016

Soliman, Ahmed Mostafa, Gadallah, Neveen Samy & Dhafer, Hathal Mohammed Al, 2016, Three new species of the genus Macroocula Panfilov, 1954 (Hymenoptera: Bradynobaenidae: Apterogyninae) from Saudi Arabia, Turkish Journal of Zoology 40 (3), pp. 352-362 : 353-355

Macroocula atuberculata Soliman & Gadallah sp. nov. ( Figures 1 –12)

Material examined. Holotype ♂: Saudi Arabia, Rawdhat Al-Harmalyiah (Al-Quwayiyah) [24°17′50″N, 45°08′49″E], elev. 786 m, 17.IV.2015, light trap no. 2, leg.

Al Dhafer et al., [ KSMA]. Paratypes 5 ♂♂: Saudi Arabia, Rawdhat Al-Harmalyiah (Al-Quwayiyah) [24°20′13″N, 45°09′15″E], elev. 774 m, 17.IV.2015 , light trap no. 5, leg. Al Dhafer et al., [ KSMA]; 5 ♂♂: Saudi Arabia, Rawdhat Al-Harmalyiah ( Al-Quwayiyah ) [24°18′34″N, 45°09′59″E], elev. 774 m, 17. IV. 2015 , light trap no. 3, leg. Al Dhafer et al., [ KSMA]; 1 ♂: Saudi Arabia, Rawdhat Al-Harmalyiah ( Al-Quwayiyah ) [24°17′49″N, 45°08′48″E], elev. 786 m, 17.IV.2015 , light trap no. 2, leg. Al Dhafer et al., [ KSMA]; 2 ♂♂: Saudi Arabia, Rawdhat Al-Harmalyiah ( Al-Quwayiyah ) [24°20′13″N, 45°09′15″E], elev. 774 m, 17.VIII.2015 , light trap no. 5, leg. Al Dhafer et al., [ MRSN]. 9 ♂♂: Saudi Arabia, Rawdhat Farshet Sheaal ( Al-Aflag ) [22°24′57″N, 47°35′17″E], elev. 602 m, 10.IV.2015 ,

Figures 6–12. Macroocula atuberculata sp. nov., holotype, (♂): 6. T 1 and T 2; 7. T 3; 8. S1; 9. S2; 10. S3–S8; 11 and 12. male genitalia, ventral and lateral view, respectively.

light trap no. 3, leg. Al Dhafer et al., [ KSMA]; 1 ♂ : Saudi Arabia, Rawdhat Farshet Sheaal ( Al-Aflag ) [22°24′34″N, 46°35′32″E], elev. 601 m, 10.IV.2015, light trap no. 2, leg. Al Dhafer et al., [ KSMA]; 1 ♂ : Saudi Arabia, Rawdhat Farshet Sheaal ( Al-Aflag ) [22°25′29″N, 46°34′31″E], elev. 612 m, 10.IV.2015, light trap no. 5, leg. Al Dhafer et al., [ KSMA]; 1 ♂ : Saudi Arabia, Rawdhat Al-Sabalh ( Al-Zulfi ) [26°22′25″N, 44°58′14″E], elev. 670 m, 20. V .2015, light trap no. 5, leg. Abdel-Dayem et al., [ KSMA]; 1 ♂ : Saudi Arabia, Rawdhat Khorim (Riyadh) [25°22′59″N, 47°16′42″E], 29.IV.2012, light trap A, leg. Al Dhafer et al., [ CUE] .

Description: MALE (holotype). Body length 12 mm. Color ( Figures 1-5 ). Head including antennal tubercle, mesosoma including hind coxa and metasomal stalk red; antenna, basal third of mandible, maxillary and labial palpi, tegula and legs ferruginous yellow, hind femur with strong blackish tint; apical 2/3 of mandible and metasomal terminal hook reddish brown; metasomal segments 2–5 dark brown to black, posterior borders reddish; first and last segments reddish brown; fore tibial spur yellow, mid and hind ones waxy white; eye black, ocelli glassy; wings hyaline, forewing veins yellow, C, Sc and stigma darker.

Pubescence. Head including antennal scape, basal third of mandible, and mesosoma including legs with moderately long erect pale setae ( Figures 2-4 ); metasoma densely clothed with long erect pale setae (Figures 10); S2–6 with apical fringe of long and sparse pale setae; felt line on T2 with dense pale setae; S6 laterally with stout reddish bristles.

Head. In dorsal view slightly wider than pronotum; face and vertex polished and puncticulate ( Figure 2 ), punctures dense on lower third of face and on the area between lateral ocellus and eye; vertex with distinct tubercle posterolaterally; MOD 1.2 × F1 diameter ( Figure 2 ); OOD 0.55 × IOD; malar space about 0.9 × F1 diameter; distance between antennal tubercles 0.6 times as long as tubercle length; clypeus convex on disc, punctulate, with free margin gently convex; gena smooth, genal orbit finely punctate. Mandible slender and pointed apically, with two small teeth subapically. Scape of antenna 1.2 times longer than wide; F1 5.7 times as long as wide, slightly longer than F2 and 1.25 times as long as F3.

Mesosoma. Pronotum foveate-reticulate dorsolaterally, with anterior face vertical (not visible from dorsal view) and lateral face foveate-reticulate anteriorly and longitudinally ridged posteriorly; mesoscutum sparsely punctate, punctures 1–2 diameter apart ( Figure 3 ), with smooth median longitudinal stripe extending along its whole length; notauli complete, moderately deep and widely divergent anteriorly; scutellum punctate-reticulate, smooth anteromedially; tegula polished and smooth; propodeum foveate-reticulate on dorsal face, posterior face gently declivous and irregularly transversely ridged. Mesopleuron foveate-reticulate dorsally and sparsely punctate to subreticulate ventrally; metapleuron feebly longitudinally ridged below spiracle. Metasternum bidentate in front of hind coxae, space between denticles V-shaped. Forewing with brachial cell 1.3 times longer than wide and 1.1 times as long as anterior vein of cubital cell ( Figure 5 ); hind wings with 7–8 hamuli. Mid trochanter ventrally with rudimentary protuberance ( Figure 4 ).

Metasoma. T1 subcylindrical, remarkably elongate, 1.5 times as long as maximal width, foveate-reticulate (Figure 6); T2 pear-shaped, 1.1 times as long as maximal width, ellipsoid foveate, with fine ridges between foveae (Figure 6); T3 ellipsoid puncticulate (Figure 7), punctures 3–5 diameters apart on disc, closer and slightly larger laterally; T4–T7 punctulate, punctures about 1 diameter apart. S1 transversely wrinkled, with strong transverse carina subapically (Figure 8); S2 shallowly punctate-reticulate (Figure 9); S3 puncticulate, punctures 3–5 diameters apart, with transverse smooth area subapically and row of punctures along posterior margin (Figure 10); S4–S6 smooth basally, densely punctate along apical rim (Figures 10).

Genitalia. Slender along its whole length, its length about 2 times its width (Figure 11). Parameres tapered at apex (Figures 11 and 12), with a peculiar tuft of somewhat longer setae apically as well as some scattered shorter ones internally and externally. Volsella with cuspis finger-like, densely setose; digitus long, about 1.7 times as long as cuspis (Figure 11), with few bristles along its margin, about 2/3 aedeagus length. Aedeagus as long as parameres or slightly longer (Figure 11), slightly bulged apically, and somewhat concave along inner margin of each penis valve.

Female unknown.

Distribution. Saudi Arabia.

Remarks. M. atuberculata could be easily differentiated from nearly all other Macroocula species by having mid trochanter with rudimentary protuberance or completely absent in some specimens (except in M. huddlestoni Pagliano, 2002 this protuberance is sometimes absent). The new species could be separated from M. huddlestoni by having aedeagus as long as parameres or slightly longer (aedeagus 0.5 times as long as parameres in M. huddlestoni ). This is in addition to the new species with head and mesosoma red; hind femur and first metasomal segment dark colored; T1 distinctly elongate, 1.5 times as long as maximal width.

Etymology. The specific name refers to the rudimentary protuberance on hind trochanter or completely its absence.

Figures

Figures 1–5. Macroocula atuberculata sp. nov., holotype, (♂): 1. habitus, dorsal view; 2. head, frontal view; 3. mesoscutum and scutellum; 4. mid and hind coxae and trochanters; 5. fore- and hind wings, part.