Phidon chanco sp. nov. of cockroach from the coastal forest of central Chile (Insecta: Blattaria) Author Vera, Alejandro text Zootaxa 2019 2019-12-18 4712 1 114 126 journal article 24552 10.11646/zootaxa.4712.1.8 69436d49-1930-487a-ba94-21a15a57c098 1175-5326 3586900 629AD6BA-84E5-445F-ABB0-E450D2292C4E Phidon chanco sp. nov. ( Figs. 1–11 ) Type material: Holotype : ♂ — Chile , Región del Maule , Cauquenes Province , Los Queules National Reserve , I-2016 , col. R . Barahona , pitfall trap (ethanol 70%), MNNC . Paratypes : 1♀ — same date of holotype , may be in copula (ethanol 70%), MNNC . 5♀ and, 5♂ — Chile , Región del Maule , Cauquenes Province , Chanco 24-I to 16-II- 1999 , pitfall trap (dry and pinned), MNNC . Other material examined: 1 ♀ (dry and pinned), Chile , Región del Maule , Cauquenes Province , Pelluhue 18- IX to 20-IX-1985 , col. F. Silva ; 6 ♂ and 6 ♀ (dry and pinned), 18 nymphs (ethanol 70%), Chanco 24-I to 16-II-1999 , pitfall trap; 1 ♂ (ethanol 70%) Los Ruiles National Reserve , I-2017 , col. C. Cifuentes ; 1 nymph (ethanol 70%), Los Queules National Reserve , I-2016 , col. R . Barahona , pitfall trap ; 7 ♂ , 3 ♀ (ethanol 70%), same locality, III-2017 ; 3 ♂ (ethanol 70%), same locality, IV-2017 . Diagnosis: both sexes brachypterous; male tegmina not covering tergite X, both join but do not overlap in the dorsal midline of the body in resting position, wings reduced; female tegmina subtriangular, not covering metanotum, wings absent; male specialization in tergite VII as a reniform depression densely pubescent; hypandrium with sclerotised median triangle, prominent and strongly armed with denticles at the apex; genitalia with L 4V large, with helicoidal apex; female tergite X with emarginate apex. Description of male: Measurements in Table 1 . General coloration ( Figs. 1 A–C): body and legs pale brownish-yellow, almost translucent, eyes black, forehead brown, dorsal side of tibiae brown-based, cerci dorsally brown. Pronotum with bands and dots as in Figure 1C , meso and metanotum with four dots, abdominal tergites and sternites with a dot on each side ( Figs. 1 A–C). Tegmina translucent, with soft brown veins. Head : subtriangular as long as wide ( Fig. 2A ); distance between eyes on vertex 1.3 times the eye length; distance between antennal sockets about 2 times scape length; two small ocelli; flat clypeus; anteclypeus divided ( Fig. 2B ); labrum with rounded margin. Mouthparts : Mandibles as in Figure 2C ; left mandible with three incisives, incisives I+II fused at their bases, incisive III with auxiliary subapical tooth, premolar tooth prominent; right mandible with three triangular incisives. Labium ( Fig. 2D ) with square submenton, short menton, prementon divided in two subtriangular sclerites, Ratios of relative lengths of palpomeres I–III equal to 2: 1.5: 3.5. Maxilla ( Fig. 2E ) with triangular lacinia as long as wide basally, with two incisives, stipes 1.5 times as long as lacinia, lacinula with long base and three long teeth ( Fig. 2F ), ratios of relative lengths of palpomeres III–V equal to 1: 1.5: 1.5. Thorax: pronotum parabolic as in Figure 1 A – C ; head barely surpasses the anterior margin. Legs as in Figure 3 ; fore femur type B 3 ; claws simple and symmetrical, arolium large; all legs with pulvilli in tarsomeres I – IV. Tegmina: subtriangular ( Fig. 4 B–D), they join in a straight line on the abdomen, their length does not exceed the tergite VIII ( Fig. 1–3 ); R with one proximal and three distal veins with one bifurcations ( Fig. 3 ); CuP extending approximately half the length of the tegmina; cross veins weakly marked ( Fig. 4 ); remigium with intercalary veins. Wings: reduced ( Fig. 4B ), with anal region bent as fan; never overlap dorsally at the resting position. Abdomen: tergites VI–IX with posterior margin medially emarginate ( Fig. 5A, 5C ). Tergite VII specialization with a medial reniform hole, and long setae extending from a medial to an anterior tubercle, with its apex is curved and flat ( Fig. 5B ), other setae are directed from the depression wall towards the center ( Fig. 5D ). Anal plate with posterior margin triangular (apex emarginate) little sclerotised ( Fig. 6E ). Paraprocts : as in Figure 5E . Cerci : short, with 10–11 segments. VIII sternite asymmetrical apodemes ( Fig. 6C ). Hypandrium : with asymmetrical apodemes, right apodeme acute and half the length of the left ( Fig. 6D ); posterior margin with laminar styli subsymmetrical and hirsute ( Fig. 6G ), this are articulated and cover the median triangle ( Fig. 6F ); median triangle long, curved ( Fig. 6A ) and dilated apex with numerous denticles ( Fig. 6B ). Male genitalia ( Figs. 7–8 ): phallomeres with sclerites as in Figure 7 ; the conservative complex show L 3 in right position, r.plm reduced to two little sclerites and L2D in median position; the most complex structure is the medium lobe with a large L 4V and two labile areas with denticles and setae (c.b.f., c.b.m.a). L3 as in Figures 8I , 8J; L 2D as in Figures 8 E–H, distal end bend with lateral tubercle ( Fig. 8H ), membranous apex with denticles ( Figure 8F, 8H ); L 4V as in Figures 8 A–D, 2/3 of the length of L2D, apex helicoidal dextrogyrus, armed with numerous denticles. FIGURE 1. Phidon chanco sp. nov. males: A. dorsal view and B . ventral view, locality: Chanco; C . dorsal view, locality: Los Ruiles. females: D . dorsal view and E . ventral view, locality: Los Queules; F. dorsal view. Scale bar: 2 mm. FIGURE 2. Phidon chanco sp. nov. male, head and mouth parts: A . head, anterior view; B . frons and clypeus, anterior view; C . mandibles, ventral view; D . labium, ventral view; E . maxilla, ventral view; F . lacinia apex, ventral view. Scale bars: A, B, C, D, and E: 0.5 mm; F: 50 µm. Description female: similar to male but wider. Measurements in Table 1 . General coloration: similar to male ( Figs. 1 D–F), but more brownish; abdominal tergites and sternites brown. Brachypterous, tegmina as in Figure 4A , subtriangular, apex reaching at most half of the metanotum ( Fig. 1D, 1F ). Wing absent. Abdomen: tergite X with apex narrow and emarginate ( Fig. 9A ). Posterior margin of genital plate weakly emarginate medially ( Fig. 9B ). Paraproct spatulated with large membranous medial region in ventral view ( Fig. 10 ). Genitalia : vestibulum with dorsal complex sclerites ( Fig. 10 ), with fused V-shaped intercalary sclerite (is); pt symmetrical; Pl like a prominent rounded tubercle; acute valves; bsvd poorly sclerotised in the middle. Ventral complex sclerites as in Figure 11 , bsvv with large posterior arms, fused at the base forming a sclerotised fork; Ls like a sclerotised fork posterior arms have a groove forming a sheet covered with setae next to the gonopore; anterior extreme of Ls sclerotised with shovel form. Anterior ventral complex forming a bursa copulatrix (bc) between anterior sclerites from Ls and bsvv. Inside the bc a membranous lobe independently carries the two openings of the spermathecae ( Fig. 11C ). The spermathecae are two small spherical and weak bags, next to the anterior bsvv sclerite ( Fig. 11B ). Etymology: a name in apposition alluding to Chanco, the Chilean locality where most of the studied specimens were collected.