Habetia pedala, Ingrisch, 2021

Ingrisch, Sigfrid, 2021, Revision of the genera Habetia Kirby, 1906 and Parahabetia gen. nov. from New Guinea (Orthoptera, Tettigoniidae, Conocephalinae, Agraeciini), Zootaxa 5020 (2), pp. 201-256: 213-214

publication ID

https://doi.org/10.11646/zootaxa.5020.2.1

publication LSID

lsid:zoobank.org:pub:4FF882DF-334F-49C8-A576-4192B5F2654C

persistent identifier

http://treatment.plazi.org/id/FA08E75D-AA33-8053-FDC0-3575958A699D

treatment provided by

Plazi

scientific name

Habetia pedala
status

sp. nov.

Habetia pedala   sp. nov.

Figs 1C View FIGURE 1 , 3I View FIGURE 3 , 5D View FIGURE 5 , 8C–E View FIGURE 8 , 11C View FIGURE 11 , 12D–E View FIGURE 12 , 18C View FIGURE 18 , Map 1(15).

Habetia spada Karny (1912)   misidentification

Holotype (male): Papua New Guinea: West Sepik, Toricelli Mountains , (3°30’S, 142°0’E), 1.–31.i.1910, [original labels: “ Kais. Wilhelmsland Toricelli Gebirge Dr. Schlaginhaufen “ and “1910 1“]—depository: Senckenberg Museum für Tierkunde Dresden ( SMTD). GoogleMaps  

Other specimens studied: same data as holotype— 2 females, 1 male (paratypes) ( SMTD) GoogleMaps   .

Taxonomic note. When Karny studied the five specimens of Habetia   in SMTD Dresden, he had just published the volume on Agraeciini   in Genera Insectorum ( Karny 1912a). At the time when he prepared the manuscript to that work, he could not have seen any true male of the genus Habetia   , since he based the description of the male of that genus exclusively on the single male of “ H. pictifrons Karny, 1911   ” and explicitly mentions in a footnote that “the description of the male end of abdomen refers only to H. pictifrons   ” (translated from German). That species is moved below to the genus Parahabetia   gen. nov. The species introduced here as H. pedala   sp. nov. had been reported by Karny (1912b) as Habetia spada ( Brunner, 1898)   . The SMTD holds five specimens of Habetia   , two males and two females from the Toricelli Mountains and a single male labeled Bongu. The male from Bongu was described as H. imitatrix Karny, 1912   , although its locality lies close to the type locality of H. spada   , while the pair from the Toricelli Mountains had been identified as H. spada   by Karny (1912b). However, the females from the Toricelli Mountains show distinct differences in the shape of the subgenital plate compared to that of the holotype of H. spada   , and the males do not show the striking modifications of the subgenital plate found in the male from Bongu but is closer to H. pallida   sp. nov. Thus, the Habetia   specimens from the Torricelli Mountains represent a formerly undescribed species.

Diagnosis. The new species has a dorsal (inner) crest at the end of the male subgenital plate ( Fig. 8D View FIGURE 8 ), a character that it shares with H. pallida   sp. nov. However, in H. pedala   sp. nov. that crest is higher, roughly twice as high as the diameter of the rounded ends of the subgenital plate and only faintly incised in middle, while in H. pallida   it is only as high as one diameter of the rounded ends of the subgenital plate and more distinctly incised. Moreover, the incised apical area of the subgenital plate is markedly longer than in H. pallida   . Further differences are the longer male cerci of H. pedala   , that have the internal projection inserted little more proximad instead of at end and the acute apical teeth of that process are longer and of different shape. The titillators are similar to those of H. pallida   and H. curvata   sp. nov. but have the apical area narrow, not widened as in those species, and the dorsodistal margin is markedly constricted in sub-apical area. From the latter species, H. pedala   also differs by the small and narrow styli and by the bi-spinose tip of the internal process of the cerci. The female subgenital plate of the new species is similar to that of H. pallida   but has the apical margin more strongly upcurved between the apical spine-like projections which thus appear stouter at base and shorter than in the latter species. From H. spada   that looks otherwise similar, H. pedala   sp. nov. differs by the female subgenital plate that is markedly convex with a pair of stout, at tip spinose projections while in H. spada   the subgenital plate is flattened and the apical projections are narrow.

Description. Coloration of face uniformly pale, of general color; mandibles fully black. Femora with the following number of spines on ventral margins: (1) a 7, p 9; (2) a 6–8, p 3–4; (3) a 12–14, p about 14 (n=2).

Male. Stridulatory file on underside of left tegmen 2.55 mm long with 74 teeth and with a distinct step in distal area: curved narrow basal area ca 0.37 mm (broken) with 12 teeth, central area 1,55 mm with 35 teeth, step 0,17 mm with 6 teeth, narrow apical area 0,51 mm with 23 teeth of which 11 clearly separated and 12 of decreasing size at end ( Fig. 18C View FIGURE 18 ). Tenth abdominal tergite nearly parallel-sided with down-curved lateral areas, with medial furrow and a narrow apical incision in middle, internal margin of that area down-curved and strongly setose ( Fig. 8C View FIGURE 8 ). Epiproct little widening toward sub-truncate apical margin and with a fine medial furrow. Cerci narrow elongate, markedly curved in apical half, behind basal area with an internal carina that delimits an excavation of the internal surface on dorsal side; that area with a wide compressed internal projection that divides in apical area into two branches that are little curved proximad, the ventro-proximal branch little longer than the dorso-apical branch; both terminate into an acute spine ( Figs 8C–D View FIGURE 8 ). Subgenital plate with roundly incised basal margin, with lateral rims along dorsal margins; ventral disc with convex lateral margins, that become at end slightly diverging; from apex deep and widely incised; styli rather short and thin ( Fig. 11C View FIGURE 11 ); at dorsal side of subgenital plate, just before the incision of the apical margin, with a rather high lamellar elevation with slightly bilobate dorsal margin ( Fig. 8D View FIGURE 8 ). Titillators at base little widened and curved ventro-distad, in central area nearly parallel-sided, straight, at transition to apical area, the dorso-proximal margin is bent posteriorly with nearly straight dorso-distal and concave ventro-proximal margin, about in mid-length the dorsal margin is constricted and afterward convex, at end titillators curved mediad and narrowed into obtuse tip ( Figs 12D–E View FIGURE 12 ).

Female. Subgenital plate with a fine membranous medial furrow and with strongly up-bent lateral and apical margins; at up-bent apico-lateral angles terminating into a pair of stout cones with acute tips ( Fig. 5D View FIGURE 5 ). Ovipositor about twice as long as body; behind basal constriction straight with dorsal valves faintly convex but not raised ( Fig. 1C View FIGURE 1 ).

Measurements (2 males, 2 females).—Body w/o wings: male 34–35, female 30–32; pronotum: male 9.0–9.6, female 9.6–9.8; tegmen: male 32.0–32.5, female 36.5–38.0; hind femur: male 22.5–24.0, female 26.5; ovipositor length: female 67–68; ovipositor height: female 2.5–2.8 mm.

Etymology. Named for the large size and long ovipositor; from Latin pedalis = one foot long.