Aberropompilus Shimizu & Wahis

Akira Shimizu, Raymond Wahis, Anthony C. Harris & James P. Pitts, 2016, An extraordinary new genus and species of spider wasps (Insecta: Hymenoptera: Pompilidae) from Southeast Asia, Journal of Natural History 50, pp. 1549-1559 : 1550-1553

publication ID

https://doi.org/ 10.1080/00222933.2016.1155781

DOI

https://doi.org/10.5281/zenodo.6071313

persistent identifier

https://treatment.plazi.org/id/3E641D3C-FFC2-FFFC-FEAD-FDABFE92F926

treatment provided by

Plazi

scientific name

Aberropompilus Shimizu & Wahis
status

gen. nov.

Genus Aberropompilus Shimizu & Wahis gen. nov.

( Figures 1 – 3 View Figure 1 View Figure 2 View Figure 3 )

Diagnosis

The female has unique characteristics among Pompilidae in having a remarkably shaped head, its outline rhomboid in frontal view ( Figure 1 View Figure 1 A) and triangular in profile ( Figure 1 View Figure 1 B); upper frons strongly produced anteriorly, hence supra-antennal area overhanging radicle of scape; lower frons markedly receding posteriorly, greatly narrowed below, flattened. The following characteristics are also very specialised and, together with the above traits, distinguish this genus from others: (1) body very slender ( Figure 2 View Figure 2 A); (2) mesosoma and metasoma compressed laterally; (3) upper frons with several long, stout, suberect setae ( Figures 1 View Figure 1 A, B); (4) inner orbits strongly arcuate and remarkably convergent below; (5) eye with numerous erect setulae, those being much longer than facet width; (6) clypeus small, entirely flattened; (7) antenna not convolute ( Figures 2 View Figure 2 A, 3); (8) juncture of anterior and posterior faces of vertex sharply edged; (9) posterior faces of vertex and gena concave, smooth and highly polished, without occipital carina ( Figure 1 View Figure 1 C); (10) pronotum much longer than mesoscutum at midline ( Figure 1 View Figure 1 D); (11) pronotal collar slightly depressed below level of its dorsum ( Figure 2 View Figure 2 B); (12) oblique sulcus on mesepisternum subobsolete ( Figure 2 View Figure 2 C); (13) mesepimeron entirely obsolete, save for its upper margin ( Figure 2 View Figure 2 C, arrow); (14) metapostnotum completely invaginated dorsally; (15) lower metapleuron and lateral side of propodeum fairly flattened, smooth and highly polished ( Figure 2 View Figure 2 C); (16) pterostigma very small and triangular, its base much shorter than cross vein 2r-rs ( Figure 2 View Figure 2 D); (17) marginal cell very long and narrow, strongly tapering apically ( Figure 2 View Figure 2 E); (18) vein M reaching outer wing margin; (19) hind wing with only one basal hamulus; (20) hind wing cross vein cu-a short and almost straight, originating very basally to fork of vein M+CuA, forming an obtuse angle with vein 1A ( Figure 2 View Figure 2 F); (21) jugal lobe very small; (22) outer face of fore coxa flattened, with a fine, semi-circularly curved groove posteriorly from base to apex ( Figure 2 View Figure 2 G, arrow); (23) fore femur enormously incrassate ( Figure 2 View Figure 2 G); (24) hind coxa much larger than mid coxa, strongly compressed laterally, greatly raised and lamellate dorso-innerly, smooth and polished, forming the same plane with both lower metapleuron and lateral face of propodeum ( Figure 2 View Figure 2 B); (25) outer apicoventral corner of hind femur rounded; (26) orbicula minute, with its pecten consisting of a few radiating, almost straight weak setulae; (27) all tarsal claws edentate ( Figure 1 View Figure 1 E); (28) tergum I narrowed and parallel sided basally ( Figure 2 View Figure 2 A); and (29) sternum VI strongly compressed laterally, with a median carina ( Figure 2 View Figure 2 H).

Description

Body smooth and impunctate. Ocelli forming low obtuse-angled triangle ( Figure 1 View Figure 1 F). Malar space much longer than one-half width of mandibular base ( Figure 1 View Figure 1 B). Labrum small, fairly exposed beneath clypeus ( Figure 1 View Figure 1 A); apical margin feebly convex without median emargination. Mandible small, thin antero-posteriorly with small tooth subapically on inner margin, without lamina or fimbriate groove along outer margin. Maxilla with palpus elongate ( Figures 1 View Figure 1 G, H); last three palpomeres thinner than third, fourth longer than third. Labium with prementum without median cleft apically or circular or heart- or spade-shaped membranous area subapically ( Figure 1 View Figure 1 I). Antennal socket removed from upper margin of clypeus by much more than its long axis. Scape long, flattened and curved outward on outer face ( Figure 1 View Figure 1 F).

Pronotum with anterior declivity much shorter than dorsum, gradually and uniformly merging into dorsum, thus never differentiated from dorsum ( Figure 2 View Figure 2 B); lateral face almost vertical and concave ( Figure 2 View Figure 2 A), juncture of lateral and dorsal faces narrowly rounded. Dorsal surface of pronotum, mesoscutum and scutellar disc flattened, almost conforming to the same plane ( Figure 2 View Figure 2 B). Posterolateral margin of mesoscutum not raised. Axilla (cuneoli) practically absent. Propodeal dorsum much longer than declivity, flattened, and gradually merging into latter ( Figure 2 View Figure 2 C); declivity somewhat concave posteromedially.

Third abscissa of fore wing vein M (basal vein) curved anteriorly ( Figure 2 View Figure 2 E). Cross veins 2 and 3 rs-m almost straightly slanting and subparallel. Cross vein 2 m-cu meeting vein CuA1 much less than half of distance from base of CuA1 to wing margin. Vein CuA1 slightly deflected downward basally. Cross vein cu-a originating basally to fork of vein M+CuA.

Mid coxa sharply raised and lamellate on dorso-outer surface. Fore tarsomere I shorter than tarsomeres II – IV combined. Mid and hind femora with basal ring, and small spines posterodorsally. Hind femur compressed laterally, its inner face flattened. Hind tibia with many short but strong spines dorsally, without scale-like teeth; apical spines equal in thickness but unequal in length, weakly splayed out ( Figure 2 View Figure 2 I). Apicoventral spine on hind tarsomere V and apicodorsal spine on hind tarsomere IV somewhat broadened basally and narrowly triangular.

Metasoma slender, fusiform ( Figure 2 View Figure 2 A). Tergum 1 with lateral crease. Sternum II without transverse groove.

Distribution

Southeast Asia (Malaysia, Thailand).

Biology

Unknown.

Kingdom

Animalia

Phylum

Arthropoda

Class

Insecta

Order

Hymenoptera

Family

Pompilidae

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