Sadyattes maganda, Hennemann, 2025

Sadyattes maganda View in CoL sp. nov.

ZooBank: https://zoobank.org/NomenclaturalActs/ F03BEBB5-F56F-442B-B339-F73504199422

( Figs. 12–13 View FIGURE 12 View FIGURE 13 )

HT, ♂: Philippinen, Mindoro Isl. , Mt. Halcon, leg. Mohagan 27.4.1996 [ RBINS, ex coll. coll. FH, No. 0278-1] .

PT, ♂: Philippinen, Mindoro Id., Prov. Mindoro Oriental, Naujan Munip., Arangin, local collector, 17.VII.2004 [coll. FH, No. 0278-2] .

PT, 9 ♀♀: 15 ♂♂: Philippinen, Mindoro Island, Prov. Oriental Mindoro, Mount Halcon , leg. N. Mohagan 6.2006 [coll. OC, No’s 0178-1 to 24] .

PT, 8 ♀♀: 31 ♂♂: Philippinen, Mindoro Island, Prov. Oriental Mindoro, Mount Halcon , leg. N. Mohagan 6.2004 [coll. OC, No’s 0178-25 to 63] .

Differentiation. The pretty ♂ ( Fig. 13 View FIGURE 13 ) of this new species is easily recognised by its distinctive and contrastive colouration, which includes an unicoloured greyish green head, glaucous to greyish blue thorax, meso- and metafemora and bases of the profemora as well as an orange abdomen, profemora and tibiae, the latter of which are distinctly annulated with black. The lack of a distinct and defined postocular streak ( Figs. 13M–N View FIGURE 13 ), longitudinally striped costal region of the alae and black apex of the meso- and metafemora are shared with leytensis , but in this new species the costal region of the alae is dark brown with the longitudinal veins pale cream-coloured ( Fig. 13O View FIGURE 13 ; reverse in leytensis ) and the vomer is much shorter, broader and basically oval in outline with a small terminal point ( Figs. 13I, L View FIGURE 13 ). Besides, the ♂ of this new species also resembles that of S. fallax (Brunner v. Wattenwyl, 1907) from Luzon and Samar but is distinguishable by the relatively smaller and less globose head ( Figs. 13M–N View FIGURE 13 ) and lack of the definite black postocular streak seen in fallax , longitudinally striped costal region of the alae ( Fig. 13O View FIGURE 13 ), presence of the distinctive but variable black lateral markings and blotches of abdominal terga II-VIII ( Figs. 13E–F View FIGURE 13 ), black apex of the femora ( Fig. 13P View FIGURE 13 ) and much larger broadly oval base of the vomer ( Figs. 13I, L View FIGURE 13 ; smaller and triangular in fallax ). The ♀ ( Fig. 12 View FIGURE 12 ) is morphologically closest to that of S. panayense sp. nov. from the island of Panay with which it shares the overall shape and long, lanceolate subgenital plate ( Figs. 12G–I View FIGURE 12 ). It may however be separated from panayense by the somewhat more globose head and black postocular speckles ( Fig. 12D View FIGURE 12 ; both missing in maganda ), more incrassate basal portion of the meso- and metafemora ( Fig. 12E View FIGURE 12 ), distinctly serrate rather than spinose ventral dentations of the meso- and metafemora, which are comparatively more pronounced but fewer in number and distinctly black ( Fig. 12E View FIGURE 12 ), large triangular pical tooth of the two outer ventral carinae of the meso- and metafemora ( Fig. 12F View FIGURE 12 ), as well as the broader posterior margin of the anal segment ( Fig. 12H View FIGURE 12 ). In several aspects, the ♀ of this species also resembles that of S. matipuno sp. nov. from the island Luzon, e. g. the somewhat incrassated basal portion and red ventro-basal area of the meso- and metafemora. However, maganda has the meso- and metafemora comparatively much slenderer and in general is much less stocky than matipuno and has the anterior of the mesothorax not conspicuously constricted like in matipuno .

Etymology. The name maganda (filipino = pretty, nice, beautiful) refers to the vibrant colouration of the ♂ of this new species. Feminine.

Description. The considerable colour variability of this species is summarised in the species description below and not provided separately because no noteworthy morphological variability can be seen in the numerous specimens at hand.

♀ ( Fig.1 2 View FIGURE 1 View FIGURE 2 ). Medium-sized (body length incl. subgenital plate 140.0– 159.5 mm), form typical for the genus, with a long and lanceolate subgenital plate and basally incrassate meso- and metafemora that bear very prominent saw-like teeth on the two outer ventral carinae. Colour remarkably variable ( Figs. 12A–C View FIGURE 12 ) and ranging from olive over various tones of ochre or buff to brown. Occasionally specimens possess irregularly dispersed white dots on the meso- and metanotum or more rarely have a bold more or less continuous white medio-longitudinal streak running along the meso- and metanotum and median segment ( Fig. 12C View FIGURE 12 ). Often a pair of washed blackish posterolateral markings is seen on the meso- and metanotum ( Fig. 12C View FIGURE 12 ). Meso- and metapleurae occasionally flecked with black and light grey or white.Area surrounding the compound eye blackish and genae with a variable and washed diagonal but often uncontinuous black postocular streak that runs from the eye towards the posteroventral end of head capsule ( Fig. 12D View FIGURE 12 ). Antennae greenish brown to drab and blackish ventrally except for the scapus and pedicellus. Base of subgenital plate often notably darker in colour than rest of body, sometimes black ( Fig. 12I View FIGURE 12 ). Meso- and metafemora and tibiae each with two more or less distinct, sometimes very faint lighter coloured annulae; all dentations of legs tipped with black. Base of meso- and metafemora red ventrally and ventro-laterally ( Fig. 12E View FIGURE 12 ). Basitarsi with base lighter in colour.

Head ( Fig. 12D View FIGURE 12 ): Sub-globose, about 1.3x longer than wide and broadest just behind the eyes; vertex convex with only the lateral furrow slightly indented and the anterior portion very shallowly concave; front with a rather shallow and slightly arched transverse impression between bases of antennae. Eyes moderately projecting and their diameter corresponding to about half the length of gena. Antennae reaching three-quarters the way along mesothorax; scapus compressed dorsoventrally, rectangular and about 1.6x longer than wide, pedicellus round in cross- section and much shorter than scapus.

Thorax: Pronotum noticeably shorter and much narrower than head, almost rectangular in outline and 1.5x longer than wide; near anterolateral angles with a V-shaped pit; the transverse median sulcus rather shallow, gently arched and expanding almost over entire width of segment; the lateral margins with a slight indention at transverse sulcus. Mesothorax 5.5x longer than prothorax and slightly sub-uniform in diameter with the anterior one-third slightly constricting. Mesonotum with a very faint medio-longitudinal line and only a low and obtuse, gently arched ridge at anterior margin. Metanotum rectangular, 2.4x longer than wide and about 0.4x length of mesonotum. Meso- and metapleurae with a shallow medio-longitudinal carina. Medio-longitudinal carina of meso- and metasternum almost indiscernible.

Abdomen: Median segment weakly trapezoidal, 1.5x longer than wide and about 0.6x length of metanotum. Segments II–V slightly increasing, VI and VII decreasing in length; V about 2x longer than wide, VII roughly 0.8x length of V. Segments slightly sub-uniform in diameter with II-V somewhat inflated and VII narrower than all preceding. Sterna II–VII with a fine but fairly distinct medio-longitudinal carina; praeopercular organ formed by a slightly swollen area of irregular, roughly longitudinally directed ridges, which have a somewhat enlarged Y-shaped bulge in centre; this region blackish brown and shiny. Tergum VIII slightly narrowing towards the anterior, 1.75x longer than wide and about half as long as VII; IX almost quadrate in dorsal aspect about three-fifth the length of VIII. Anal segment scarcely longer than IX and narrowing towards the posterior with a fine medio-longitudinal keel and somewhat tectate posteriorly; the posterior margin narrowed, rounded and with a minute median indention; lateral margins very weakly concave in posterior half. Epiproct broad, transverse and scarcely projecting over posterior margin of anal segment ( Fig. 12H View FIGURE 12 ). Cerci fairly small, conical and almost reaching to tip of anal segment. Gonapophyses VII hidden underneath anal segment. Subgenital plate somewhat variable in length, lanceolate, bulgy in basal portion with the elongated apical portion naviculate and with a more or less acute tip; projecting beyond tip of abdomen by more than length of terminal two terga taken together (usually much longer although and extreme cases projecting by more than combined length of terga VIII–X; Figs. 12G–I View FIGURE 12 ).

Legs: Of moderate length and stock for the genus with the meso- and metafemora notably incrassate in basal one-third with the two outer ventral carinae expanded; all carinae dentate; essentially all ventral dentations notably more pronounced than dorsal dentations. Profemora about as long as pro- and mesothorax combined, mesofemora slightly shorter than mesothorax, metafemora reaching roughly reaching to posterior margin of abdominal segment Iv and metatibiae reaching posterior of VII. Dentations on posteroventral carina of profemora more triangular in shape, slightly more numerous, more closely spaced and more distinctly black that the lower and rather saw-like teeth of anterodorsal carina; posterodorsal carina supplied with about 20 small denticles. Dentations of two outer ventral carinae of meso- and metafemora very prominent, acutely triangular, almost wholly black and closely spaced; teeth of the dorsal carinae small, less in number and irregularly spaced ( Fig. 12E View FIGURE 12 ). Medioventral carina of meso- and metafemora supplied with some rather small spines. The apical tooth of two outer ventral carinae noticeably enlarged (mesofemora in particular; Fig. 12F View FIGURE 12 ). Meso- and metabasitarsus somewhat longer than following three tarsomeres taken together with the two ventral carinae dentate; probasitarsus unarmed and slightly longer than all remaining joints combined.

Measurements of ♀♀ PT [mm]: Body (incl. subgenital plate) 140.0–159.5, body 128.9–146.2, pronotum 5.3– 5.6, mesonotum 25.8–30.2, metanotum 11.8–13.0, median segment 7.3–7.8, profemora 30.9–38.1, mesofemora 23.9–28.1, metafemora 29.0–35.2, protibiae 33.8–42.6, mesotibiae 22.3–26.5, metatibiae 29.1–35.8, antennae> 32.0.

♂ ( Fig. 13 View FIGURE 13 ). Of average size (body length 95.1–113.6 mm) and typical form for the genus, prettily multicoloured with fairly short alae that reach no further back than two-thirds the way along abdominal segment III (length 21.9–27.4 mm). Body surface slightly glossy. Meso- and metathorax as well as meso- and metafemora mid to dark green and to a variable degree of a slight bluish wash; the femora all with apex black ( Fig.13P View FIGURE 13 ). Pronotum green laterally, ochre medially and with two closely spaced almost parallel black medio-longitudinal lines ( Fig. 13M View FIGURE 13 ). Head dark yellow to orange with an almost indiscernible washed darker postocular streak ( Figs. 13M–N View FIGURE 13 ); the frons with a washed greyish central marking. Antennae dark reddish brown, except for scapus and pedicellus, which are greenish ochre. Tegmina and costal region of alae reddish mid to dark brown with all longitudinal veins ochraceous yellow and the anterior margin marked by a broad white band ( Fig. 13O View FIGURE 13 ); anal fan transparent grey with brown veins. Abdomen basically orange and very variably furnished with black markings, which are mostly restricted to the posterior portion of terga II-VII (e. g. holotype), or terga almost wholly black with only the lateral margins and posterior margin orange. Sterna II–VII green with washed black marking anteriorly and posterior margin broadly orange. Terga VIII and IX only with a variably shaped elongate black lateral marking, VIII with lateral margin broadly white ( Figs. 13G–H, J–K View FIGURE 13 ). Anal segment destitute of black markings. Profemora bright orange to red with compressed base turquoise to blue ( Figs. 13M–N View FIGURE 13 ). All tibiae orange with three black annulae. Basitarsi orange with apex black. It is noteworthy that the holotype has all the colours somewhat faded with the green portions more bluish than in the numerous paratypes.

Head ( Figs. 13M–N View FIGURE 13 ): Basically, as in ♀ but the coronal line and lateral furrow more indented and the impression of frons rather oval. Eyes much larger, projecting hemispherical and their diameter corresponding to as much as 0.7x length of gena. Antennae very long and reaching to posterior of abdominal segment V; otherwise as in ♀.

Thorax: Pronotum basically as in ♀. Mesothorax elongate, 7.2x longer than prothorax and uniform in diameter with a slight widening at anterior margin and in posterior portion. Mesonotum with a very fine medio-longitudinal line and anterior margin with the transverse ridge indistinct. Medio-longitudinal carina of mesosternum rather indistinct and almost indiscernible on metasternum. Tegmina moderately elongate, spatulate with basal two-thirds gradually narrowing and the apical one-third rounded; central hump rather shallow and obtusely rounded ( Fig. 13O View FIGURE 13 ). Alae somewhat variable in length and ranging from merely reaching to posterior margin of abdominal segment II to reaching two-thirds the way along segment III (e. g. holotype).

Abdomen: Segments II-V slightly increase, VI and VII decreasing in length with VII only about 0.6x length of V and V about 5.5x longer than wide; all uniform in diameter, VII notably constricted medially. Sterna II–VII all with a very distinct and acute medio-longitudinal carina. Tergum VIII trapezoidal in outline with posterior margin about 1.25x wider than anterior margin and a little less than half the length of VII. IX narrowed in posterior half, strongly convex longitudinally roughly as long as VIII. Anal segment shorter than IX, slightly narrowing towards posterior, moderately tectate longitudinally; lateral surfaces with a shallow gibbose swelling sub-basally ( Figs. 13H, K View FIGURE 13 ); the posterior margin strongly inflated, labiate and arched outwards, the ventral surfaces minutely denticulated and facing each other at an angle of about 40°. Cerci round in cross-section, very gently up-curved with apex weakly club-shaped and considerably projecting beyond anal segment. Vomer broadly heart-shoed with base large and oval and the terminal hook short and distinctly up-curved; ventral surface impressed interiorly with a central swelling and the outer margins broad and inflated ( Figs. 13I, L View FIGURE 13 ). Phallus not distinctly projecting over upper margin of poculum, Poculum moderately sized, bowl-shaped with the base somewhat protruded centrally and obtusely bulgy ( Figs. 13G, J View FIGURE 13 ); the posterior margin noticeably narrowed and roughly reaching to posterior of tergum IX ( Figs. 13I, L View FIGURE 13 ).

Legs: Long, slender and with all carinae minute but fairly uniformly dentate; ventral teeth comparatively more pronounced than those of dorsal carinae. Profemora noticeably longer than head, pro- and mesothorax combines, mesofemora a little longer than combined length of pro- and mesothorax, metafemora slightly projecting over posterior of abdominal segment V and metatibiae projecting beyond tip of abdomen by more than combined length of terminal four abdominal segments. Medioventral carina of meso- and metafemora supplied only with a few minute spines. Meso- and metabsitarsi about as long as remaining tarsomeres combined, probasitarsus very elongate and considerably longer than remaining tarsomeres taken together; all destitute of teeth.

Measurements of ♂ HT [mm]: Body 102.0, pronotum 2.7, mesonotum 23.8, metanotum -, median segment -, tegmina 5.4, alae 26.0, profemora 39.6, mesofemora 30.5, metafemora 39.0, protibiae 50.0, mesotibiae 34.8, metatibiae 43.3, antennae 80.0.

Measurements of ♂♂ PT [mm]: Body 95.1–113.6, pronotum 2.6–2.9, mesonotum 21.6–27.3, metanotum -, median segment -, tegmina 5.4–6.8, alae 21.9–27.4, profemora 31.8–40.3, mesofemora 26.0–32.7, metafemora 31.3–39.8, protibiae 38.9–49.3, mesotibiae 26.3–33.3, metatibiae 33.1–44.2, antennae> 57.0.

Remarks. Egg unknown.

Distribution. Philippines. Mindoro (Mount Halcon – type locality [RBINS, OC]; Naujan Municipality,Arangin [FH]).