Austroectobius invunche Vera & Schapheer, 2018

Vera, Alejandro & Schapheer, Constanza, 2018, Austroectobius invunche: new genus and species of Ectobiidae for Chile (Insecta, Blattaria), Zootaxa 4500 (1), pp. 115-125 : 116-120

publication ID	https://doi.org/ 10.11646/zootaxa.4500.1.7
publication LSID	lsid:zoobank.org:pub:EE66D84B-D5B2-4CC1-B9E7-E33A6EF944C6
DOI	https://doi.org/10.5281/zenodo.5303539
persistent identifier	https://treatment.plazi.org/id/03CC2426-3E5A-FFCA-FF4D-FA94FE6BF865
treatment provided by	Felipe
scientific name	Austroectobius invunche Vera & Schapheer
status	sp. nov.

Treatment

Austroectobius invunche Vera & Schapheer n. sp.

Figures: 1–7

Material examined: Holotype, male: Chile, Región de los Lagos, Isla Grande de Chiloé , Cucao. On Fascicularia bicolor (42°32’56”S / 74°06’07”W), 5/II/2001, col. A. Vera. GoogleMaps Paratype: 1 female with same holotype data. 1 male: Chile, Región de los Lagos, Llanquihue, Todos los Santos Lake 13/II/2001 col. A. Vera. All specimens dried pinned and deposited in MNNC .

Etymology: invunche: name in Chiloé mythology that describes a deformed and twisted monster, created by the sorcerers of the island with a Christian child.

Habitus ( Figs. 1a, e View FIGURE 1 ): small insects, body oval, wider in the female, both sexes with small oval tegmina and hind wings absent.

General coloration yellow with dark spots, yellow head, dark eyes, front and clypeus dark brown ( Figs. 1b, e View FIGURE 1 ). Thorax side margins translucent and yellow, brown center with two dark longitudinal bands in thoracic segments I to III, pronotum anterior margin yellow; translucent yellow tegmina; yellow legs with dark brown spots at base of spines and distal end of tibiae in dorsal view. Abdomen with I to VIII tergites with brownish to reddish spot that occupies 2/4 of middle area, dark sternites in center, cerci with segments I–III dark brown in dorsal view ( Figs. 1a, d View FIGURE 1 ); tergites of lateral margin yellow in male, subgenital plate with quadrangular spot in center, yellow styles; female tergites are darker with spots on margins.

Description. Male. Head ( Fig. 2a View FIGURE 2 ): subtriangular, wide as long, frontoclypeal suture incomplete ( Fig. 2b View FIGURE 2 .). Without ocelli, anterior and posterior clypeus not prominent, bilobed labrum. Mandible ( Fig. 2c View FIGURE 2 .) right with three triangular incisors, rectangular molar region with two sharp teeth in distal margin. Maxillae ( Figs. 2d, f View FIGURE 2 ): lacinia with two apical teeth mostly fused, sharp and curved; with row of setae along its medial margin ( Fig. 2e View FIGURE 2 .); short base lacinula with three teeth of length similar to setae of the row ( Fig. 2f View FIGURE 2 .). Maxillary palp longer than head, segments III and V of similar length, the latter triangular, segment IV two thirds of III ( Fig. 2d View FIGURE 2 .); stipes length similar to lacinia. Labium ( Fig. 2g View FIGURE 2 .): square submentum, mentum twice as wide as long, prementum divided medially into two subtriangular regions, as wide as long; oval paraglosa with acute apex; sclerotised glosa, with two segments of similar length, distal segment acute ( Fig. 2h View FIGURE 2 ); labial palp with segment III similar to sum of the previous two, with rounded apex.

Thorax ( Figs. 1a, c View FIGURE 1 ): convex pronotum, trapezoidal with rounded corners, straight anterior and posterior margins, with a smooth and glossy surface; transverse mesonotum and metanotum, almost four times wider than long, with straight posterior margin; tegmina ellipsoidal without obvious venation, do not exceed the edge of mesonotum; hind wings absent.

Legs: short and robust ( Figs. 1b View FIGURE 1 , 3 View FIGURE 3 ); tarsi of the three pairs of legs, with developed pulvilli in tarsomeres I– IV ( Fig. 3 View FIGURE 3 ), sharp and curved claws, symmetric without specialization, developed arolium, with dorsal sclerosis; tarsomeres proportions in each pair of legs 1° 2:1:0.7:0.5:1.5; 2° 3.5:1.3:0.8:0.5:1.5; 3° 4:1.5:1:0.5:1.5. Fore leg ( Fig. 3 a View FIGURE 3 ): spines on the antero-ventral margin of the front femur Type A 3, with a row of 11 stout spines on anterior margin which decrease gradually in sizeand ends in 3 larger spines, the apical spine measures a third of the length of tibia; tibia with 3 dorsal, 3 ventral and 4 apical spines. Middle leg ( Fig. 3b View FIGURE 3 ): Femur with 5 to 6 spines on the antero-ventral margin, with genicular spines; tibia with 3 ventral spines, 8 dorsal and 4 apical. Hind leg ( Fig. 3c View FIGURE 3 ): Femur with 7 spines on the antero-ventral margin, with genicular spines; tibia with 8 ventral spines, 11 dorsal and 5 apical.

Abdomen without tergal specializations ( Figs. 1a, c View FIGURE 1 ); smooth and flat tergites, straight posterior margin and laterally slightly convergent backwards, rounded posterior angle; tergite VIII narrow and covered almost entirely by VII; sternites with smooth surface, convex, rounded lateral margins which do not exceed the tergites; sclerotized supra-anal plate ( Fig. 4b View FIGURE 4 ), transverse, trapezoidal in shape, with thick and straight posterior margin, it extends just beyond the second segment of the cerci; fusiform cerci, with eight segments ( Fig. 4c View FIGURE 4 ). Asymmetric paraprocts ( Fig. 4c View FIGURE 4 ), flat and sclerotized, spatula-shaped; with three rounded lobes on medial margin. Right paraproct with a spine directed anteriorly on the central lobe; left paraproct with lobes separated by a median cleft. Subgenital plate trapezoidal ( Fig. 4a View FIGURE 4 ), straight posterior margin, slightly asymmetric; apodemes with rounded apex, left extends to sternite V, right apodeme is attached to left and only extends to sternite VI; cylindrical styles ( Fig. 4a View FIGURE 4 ), left with a proximal tooth, external, sharp and bent ( Fig. 4d View FIGURE 4 ).

Genitalia. Phallomeres ( Figs. 5–6 View FIGURE 5 View FIGURE 6 ): left phallomere with L3d subtriangular, L2d ( Fig. 5e View FIGURE 5 ) with genital hook broadly-based and strongly narrowed towards apex, curved apex in form of a wide fist, with two lateral teeth, subapical incision small. Right phallomere ( Fig. 5a, b, c, d View FIGURE 5 ) sclerite R3v canoe-shaped, R2 like a wavy bifurcated fork. Medium phallomere with 3 sclerites and ejaculator duct specialized. L1a (=L2vm) with straight apical end, acute; twisted in middle of its length with a medial spine ( Figs. 5c, d View FIGURE 5 ). L1b is ventral to L1a ( Fig. 5c View FIGURE 5 ), sclerotized, with base extends in a subtriangular medial plate, a prominent staff extends from its base, dorsally grooved, with round apex and heavily striated surface ( Fig. 6b View FIGURE 6 ), in middle of its extension it has a curved laminar bifurcation to the right ( Fig. 6a View FIGURE 6 ). The laminar base of L1b continues in a extern ejaculatory duct with a dilated piriform base ( Figs. 5 b–d View FIGURE 5 ) and a flexible sclerotized long tube. This tube is rolled up inside a large invagination of medium phallomere ( Figs. 5b View FIGURE 5 , 6a View FIGURE 6 ), this extends twisted above L1a ( Fig. 6a View FIGURE 6 ) to subgenital plate apodeme, it returns and engages in a groove of L1b ( Figs. 5c, d View FIGURE 5 , 6a View FIGURE 6 ), apex arched, sharpened and with a rough surface ( Fig. 6c View FIGURE 6 ). L1c is dorsal to L1a ( Figs. 5a, c, d View FIGURE 5 ), shaped like a triangular sheet medially folded. A ventral sclerite to L1b ( Figs. 5c–d View FIGURE 5 ), transverse and lanceolate, this may be is similar to L2v?

Female. Sexual dimorphism: female is similar to male, but female is wider and tergal pigmentation in abdomen presents dark irregular brown spots, denser towards medial region ( Fig. 1d View FIGURE 1 ).

Female genitalia: tergo X with rounded posterior margin; paraprocts flat and spatulate, with sclerotized anterior and posterior branches ( Fig. 7 View FIGURE 7 ); broad subgenital plate with rounded posterior margin ( Fig.7 View FIGURE 7 ); without interspersed sclerite; developed valves, wide, extended to paraprocts; genital sclerites symmetrical, paratergite short and curved; laterosternite IX circular; first valvifer arm sclerotized, with triangular plate shape, over it a ringshaped spermatecal plate, strongly sclerotized ring around spermatheca pore; basivalvula and sternite IX as strongly sclerotized sheets "v" shaped.

Nymphs: color pattern, pronotum shape and anterior femur spines are distinguishable in nymphs from 4mm body length.

Ootheca: unknown