Stenomantispa Stitz

Snyman, Louwrens P., Sole, Catherine L. & Ohl, Michael, 2018, A revision of and keys to the genera of the Mantispinae of the Oriental and Palearctic regions (Neuroptera: Mantispidae), Zootaxa 4450 (5), pp. 501-549 : 513-515

Genus Stenomantispa Stitz

Stenomantispa Stitz, 1913 . Type species: Mаntispа (Stenomаntispа) ilsаe Stitz, 1913 , by monotypy.

Distribution: Australasian: Papua New Guinea.

Diagnosis ( Fig. 9 ): Stenomantispa can be distinguished from other Oriental and Palearctic genera by the combination of the conspicuously keeled tergites ( Fig. 9c ), wing pigmentation always surrounding the r-rs crossveins ( Fig. 9b and e ), and the endemic distribution limited to Papua New Guinea.

Head: vertex slightly domed anteromedially, flattening out laterally and posteriorly except for slight longitudinal ridge connecting dome with occiput; postocular margin broad, covered in setae; interocular space at anterior margin of scape as wide or narrower than width of eyes; scape with few setae; flagellum slender, length 2/ 3 of prothorax, lacks pale band in distal third; flagellomeres simple/unmodified, basal flagellomeres (approx. 8–10) with prominent whorl of setae on anterior margin which gradually change towards the apex into fine setae covering entire flagellomeres.

Thorax: pronotum shape of mid-section irregularly wrinkled, pronotum in dorsal view irregularly rugose with prominent central hump posterior to slight constriction posterior to maculae; with sparsely distributed setae, usually restricted to lateroventral anterior, the surface pubescent (velvet appearance); maculae conspicuous, slight flattened and pigmented dorsum, maculae posterodorsally directed; prothorax longer than pterothorax, ventral outline of pronotum in lateral view slightly bent dorsad anterior to maculae. Mesoscutal furrows obsolete, pterothorax pubescent, sometimes with sparsely distributed setae, mesoscutellum length 1/3 of mesothorax.

Legs: mesotarsus with segment I similar in length than segments II–IV combined; segment IV the shortest; segment V slightly globose anterodorsally; metatarsus with segment I similar in length than segments II–IV combined; segment II–IV similar in size; segment V slightly globose anterodorsally; meso- and metatarsal teeth consisting of five to seven, with a collective rounded shape (middle teeth similar in length).

Wings: pigmentation of the cell regions flanking Rs origin and r-rs crossveins always present, more prevalent in S. ilsae ; radial cells comparatively unmodified. Forewing: costal space terminates at r-rs1; pterostigma unmodified, commencing mid-way of RS2, terminates mid-way of RS3, sc-ra crossvein distinctly less than half the length of RS3, zero or one ( S. ilsae ) or two or three ( S. reinhardi ) c-ra crossveins distal to pterostigma, A1 and A2 simple, A2 and A3 fused basally, CuP straight, sometimes slightly curved proximally to approach A1. Hindwing with A1 forked, A2 present but attenuated, easily interpreted as absent, CuA bent towards A1, cu-a long connects to A1 distal to fork.

Male abdomen ( Fig. 9d, f, g, h ): length short, not extending past wing apices, tergites III–VI conspicuously keeled, tergites V and VI with two transverse rows of pores on anterolateral margin, pores do not extend to dorsum, each row consists of five to 12 pores, setae present among pores; area between the rows smooth, lacks setae; ectoprocts simple, short, do not extend past apex of sternite IX in lateral view, in caudal view ventrolaterally slightly globose, tapering off towards dorsomedial line; ventromedial lobes prominent, posteriorly enlarged, ventrocaudally or ventromedially directed; sternite IX with globose scoop-like medial protrusion on apex, protrusion bifid after maceration, directed posteriorly in lateral view; pseudopenis short to medium in length, similar or slightly longer than length of pseudopenal membrane; pseudopenal membrane triangular with hypomeres situated laterally ( S. ilsae ) or laterodorsally ( S. reinhardi ), gonocoxites short, 2/3 of mediuncus length, non-parallel, approach distal apex of mediuncus, never reaching level of hypomeres; mediuncus distal apex bifid, basal apex oval to spear shaped; gonarcal lobe similar in length to pseudopenis, apex acutely produced ( S. ilsae ) or sub-acute to rounded ( S. reinhardi ).

Biology: nothing is known about the biology of Stenomantispa . There are only two species included in the genus (see Appendix).

Figures

FIGURE 9. Stenomantispa reinhardi (a) prothorax in lateral view (b) habitus (c) abdomen in lateral view, arrows indicate keeled tergites (d) tergite VI, arrows indicate two rows of pores (f) tergites V and VI, arrows indicate pores on anterior margin of tergites (g) terminalia in lateral view (h) terminalia in dorsal view; Stenomantispa ilsae (e) habitus.