Anachrysis arabica van Loon & Soliman, 2023

van Loon, Milo & Soliman, Ahmed M., 2023, An unexpected new species of Anachrysis Krombein, 1986 (Hymenoptera, Chrysididae, Amiseginae) from the Arabian Peninsula, Journal of Hymenoptera Research 96, pp. 835-846 : 835

publication ID

https://dx.doi.org/10.3897/jhr.96.107489

publication LSID

lsid:zoobank.org:pub:9055C93D-232B-4032-BB4A-ACF3990349F9

persistent identifier

https://treatment.plazi.org/id/6FF256F7-9C68-4D21-A11B-4727D4AC4C55

taxon LSID

lsid:zoobank.org:act:6FF256F7-9C68-4D21-A11B-4727D4AC4C55

treatment provided by

Journal of Hymenoptera Research by Pensoft

scientific name

Anachrysis arabica van Loon & Soliman
status

sp. nov.

Anachrysis arabica van Loon & Soliman sp. nov.

Figs 1 View Figure 1 , 2 View Figure 2 , 3 View Figure 3 , 4 View Figure 4

Type material.

Holotype ♂: Saudi Arabia / Jazan / Ahad Almasarhah / Alkhoms [16°46'14.42"N, 42°46'15.94"E, alt. 20 m] // 21.v.2022, MT / Leg. Ahmed M. Soliman [KSAM]; Paratypes: 2♂ and 3♀ same data as holotype [KSAM]; 1♂ and 1♀ same data as holotype [PRPC]; 1♂, Saudi Arabia / Jazan / Farasan Island / site 2, 14.iv.2016, MT / Leg. H. Dawah [KSMA]; 1♂, Yemen / Lahj, xi.2000, MT / no. 5202, Leg. A. v. Harten / & A. Sallam [RMNH]; 1♂ and 3♀, Yemen (7585) / 12 km NW Manakhah / 15.v-23.vi.2003, MT / Leg. A. v. Harten [RMNH].

Diagnosis.

Vertex with two large impunctate and polished swellings (Figs 1C View Figure 1 , 2A View Figure 2 , 3B View Figure 3 ). Gena narrowing gradually from mandibular base to upper limit of eye (Figs 1D View Figure 1 , 3A View Figure 3 ). Scapal basin deep, transversally ridged (Figs 1C View Figure 1 , 3C View Figure 3 ). Lateral lobe of male clypeus lamellate, acute at apex and translucent white in color (Fig. 1C View Figure 1 ). Pronotum and mesoscutum coarsely and densely setiferous foveate, interspaces polished (Figs 2A, B View Figure 2 , 4A, B View Figure 4 ). Pronotum posteromedially with deep short groove (Figs 2A View Figure 2 , 4A View Figure 4 ). Scutellum sparsely setiferous punctate, interspaces polished (Figs 2A View Figure 2 , 4A View Figure 4 ). Propodeum with longitudinal median fine carina (Figs 2A View Figure 2 , 4A View Figure 4 ). T1-4 densely punctate (punctures on T4 minute), interspaces polished (Figs 2D, E View Figure 2 , 3B View Figure 3 , 4C View Figure 4 ). Body metallic blue, with reddish to reddish brown tint on mesepisternum, metasomal venter and legs (Figs 1A, B View Figure 1 , 2F View Figure 2 , 3A, B View Figure 3 , 4E View Figure 4 ).

Description.

Male (Figs 1 View Figure 1 - 2 View Figure 2 ): Body length 3-4 mm; forewing length 2.2-2.5 mm.

Head. In frontal view about as long as wide, distinctly narrowed ventrally, somewhat triangular (Fig. 1C View Figure 1 ). Vertex with two large polished swellings directly behind posterior ocelli, posteriorly moderately declivous and setiferous foveate-subreticulate, foveae about 0.3 × AOD (Figs 1D View Figure 1 , 2A View Figure 2 ). Ocellar triangle equilateral (Fig. 1C View Figure 1 ). OOL 1.5 × AOD; POL 2 × AOD; OPL about 5 × AOD (Figs 1C View Figure 1 , 2A View Figure 2 ). Occiput without occipital carina (Fig. 2A View Figure 2 ). Temple evenly rounded behind eye, about 1.5 × AOD (Fig. 1D View Figure 1 ). Frons setiferous foveate-subreticulate (foveae about 0.5 × AOD), bulging on either side of scapal basin; scapal basin relatively small but deeply depressed and transversally ridged, with longitudinal median ridge (Fig. 1C View Figure 1 ). IOL 0.4 × as long as head width (Fig. 1C View Figure 1 ). Eyes distinctly diverging ventrally, bare, about 1.25 × as high as wide (Fig. 1C, D View Figure 1 ). Subantennal distance relatively long, 2.8-3.0 × AOD (Fig. 1C View Figure 1 ). Clypeus broad, about 2 × as wide as long, slightly convex and punctulate on disc, depressed and polished along subapical rim, trilobate apically; median lobe acutely rounded apically; lateral lobe moderately large and thin (lamellate), broadly triangular and pointed towards apical end (Fig. 1C View Figure 1 ). Malar space long, 4.5-5.0 × AOD, sparsely punctate, with well-developed vertical sulcus (Fig. 1D View Figure 1 ). Gena gradually narrowed towards the temple, its width about 1.5 × AOD at its mid-length, densely foveate (Fig. 1D View Figure 1 ). Flagellum long, filiform, flagellomeres cylindrical and gradually decreasing in length distally; F1 longest, 5.0-5.2 × as long as wide; F2 3.5-3.8 × as long as wide; F3 about 3.5 × as long as wide; F11 about 4.5 × as long as wide (Fig. 1E View Figure 1 ). Mandible flattened, broad and incised near base, tapering and edentate apically (Fig. 1C, D View Figure 1 ). Palpal formula 3/4.

Mesosoma. About 2.5 × as long as maximum width at the level of mesopleuron (Fig. 2A View Figure 2 ), relatively flat in lateral view (Fig. 2B View Figure 2 ). Pronotum wider than long, about 1.2 × (Fig. 2A View Figure 2 ), with anterior shelf longitudinally ridged, dorsal face setiferous foveate-reticulate to subreticulate (foveae about 0.7 × AOD), humeral angles evenly rounded (Fig. 2A View Figure 2 ) and lateral lobe not reaching tegula (Fig. 2B View Figure 2 ), posteromedially with deep short groove (Fig. 2A View Figure 2 ). Mesoscutum shorter than pronotum, about 0.7 ×, setiferous foveate-subreticulate (Fig. 2A View Figure 2 ); notauli complete, anteriorly strongly diverging towards pronotal lobes (Fig. 2A View Figure 2 ); parapsides reaching anterior fourth of mesoscutum (Fig. 2B View Figure 2 ). Tegula oval and polished (Fig. 2A View Figure 2 ). Scutellum about 0.7 × as long as mesoscutum, setiferous sparsely punctate (Fig. 2A View Figure 2 ); interspaces between foveae and punctures on pronotum, scutum and scutellum polished (Fig. 2A, B View Figure 2 ); metanotum about 0.3 × as long as scutellum, longitudinally ridged (Fig. 2A View Figure 2 ). Propodeum areolate, posterolaterally evenly rounded (without lateral angle), with longitudinal median fine carina extended on both faces (Fig. 2A, D View Figure 2 ), propodeal dorsal face about 0.9 × as long as scutellum and metanotum combined (Fig. 2A View Figure 2 ), posterior face in lateral view rather abruptly declivitous (Fig. 2B View Figure 2 ). Mesopleuron gradually differs from being foveate on dorsal face to sparsely punctate on ventral face (Fig. 2B, F View Figure 2 ), with prepectal carina (Fig. 2B View Figure 2 ).

Forewing (Fig. 2C View Figure 2 ). R and 1Cu cells fully sclerotized. M1 cell delimited with faint veins except proximal M well sclerotized. Stub of Rs particularly well sclerotized (thick), about 0.7 × as long as pterostigma and R1 combined. M vein slightly curved, meets M+Cu before cu-a.

Hind leg (Figs 1A View Figure 1 , 2F View Figure 2 ). Femur 2.3-2.5 × as long as its maximum width, with dorsal margin basally strongly swollen then gradually narrowing towards apical end.

Metasoma. T1 about 0.5 × and 1.5 × as long as T2 and T3 respectively, anterolaterally gently rounded (Fig. 2D View Figure 2 ). T1-4 punctulate (punctures on anterior half of T3 and T4 minute), interspaces polished (Fig. 2D, E View Figure 2 ). T2 with posterior margin strongly convex (Fig. 2D View Figure 2 ). T5 extremely small, greatly concealed (Fig. 2E View Figure 2 ). S2 punctulate on disc, polished on edges, with posterior margin slightly emarginate medially (Fig. 2F View Figure 2 ). S3-4 minutely punctate, S3 polished on anterior half (Fig. 2F View Figure 2 ).

Genital capsule. As in Fig. 2G View Figure 2 .

Pilosity. Body rather sparsely setose throughout, with erect to suberect white fine setae (about 1.5-2 × AOD in length) (Figs 1A, C, D View Figure 1 , 2B, D View Figure 2 ), except male antennal flagellomeres particularly with dense short reddish setae (Fig. 1E View Figure 1 ) and male S2 with circular central area of dense recumbent setae (Fig. 2F View Figure 2 ). Setae longest on fore coxa and femur and hind femur. Wings with brown macrotrichiae on both sides, denser on distal half than elsewhere (Fig. 2C View Figure 2 ).

Color. Body metallic blue (Figs 1A, B View Figure 1 , 2F View Figure 2 ), except following parts: apical half of mandible (Fig. 1C View Figure 1 ), labial and maxillary palps (Fig. 1D View Figure 1 ), F7-11 (Fig. 1E View Figure 1 ), small to large marking on mesepisternum and metasomal sternal borders reddish to reddish brown (Fig. 2F View Figure 2 ); ventral aspect of tibiae, entire tarsi and F1-6 orange (Figs 1A, E View Figure 1 , 2F View Figure 2 ); lateral lamella of clypeus whitish and largely translucent (Fig. 1C View Figure 1 ); anterior rim of T2, anterior half of T3 and T4 with black tint (Fig. 2D, E View Figure 2 ). Wings hyaline, veins and pterostigma brown to dark brown (Fig. 2C View Figure 2 ).

Female (Figs 3 View Figure 3 , 4 View Figure 4 ): Body length 3-3.5 mm; forewing length about 2.3 mm.

Similar to male, but differs as follows: Subantennal distance distinctly shorter, 0.9-1.0 × AOD (Fig. 3C View Figure 3 ); clypeus without lateral lamella (apically not trilobate), with free margin truncate (Fig. 3D View Figure 3 ); mandible simple, rather slender and subbasally entire (without incision) (Fig. 3D View Figure 3 ); flagellum fusiform and distinctly shorter (F2-8 widened, at least as long as wide), ventral surface of F3-11 flattened, pedicel and F1 reddish brown, F2-11 dark brown to blackish (Fig. 3E View Figure 3 ); frons in lateral view more strongly bulging (Fig. 3A View Figure 3 ); reddish marking on mesepisternum extensive and lighter (Fig. 4E View Figure 4 ); forewing slightly infumate, brown, on distal half (Fig. 3A View Figure 3 ); distal veins, Cu, Rs+M and 1 m-cu of M1 cell extremely faint (nearly absent) (Fig. 3A View Figure 3 ); S2 sparsely setose throughout (without central area of dense recumbent setae) (Fig. 4E View Figure 4 ); metasoma with slender ovipositor (Fig. 4D View Figure 4 ).

Distribution.

Southwestern Saudi Arabia and Yemen.

Etymology.

The specific name Anachrysis arabica is a Latin adjective derived from Arabian Peninsula, referring to the subregion where the species has been found.

The following key can be used for differentiation between Anachrysis species: the new species A. arabica (Saudi Arabia and Yemen), A. paradoxa Krombein, 1986 (Botswana and South Africa) and A. spanglerorum Krombein, 1994 (South Africa).

Kingdom

Animalia

Phylum

Arthropoda

Class

Insecta

Order

Hymenoptera

Family

Chrysididae

Genus

Anachrysis