Macrostylopyga bidupi Anisyutkin, Anichkin & Nguyen

Anisyutkin, Leonid N., Anichkin, Alexandr E. & Thinh, Nguyen Van, 2013, Macrostylopyga gen. nov., a new genus of cockroaches (Dictyoptera: Blattidae), with descriptions of two new species, Zootaxa 3635 (5), pp. 520-532 : 524-530

Macrostylopyga bidupi Anisyutkin, Anichkin & Nguyen , sp. nov.

( Figs. 12–17, 23, 24 , 31–34 , 46–49 , 53–55 )

Material. Holotype male, Vietnam: Lam Dong Province, Lac Duong District, 5 km NE of Long Lanh Village, Bi Dup–Nui Ba Nature Reserve, 12°10'44'' N, 108°40'44'' E, elevation = 1400 m, April 2009, soil trap, Pl. 5–9, probe 23, coll. A. Anichkin (Expedition of the Russia-Vietnam Tropical Centre).

Description. Male (holotype). General coloration reddish black; scapus, medial parts of pro-, meso-, metanotum and abdominal sternites, hypandrium and caudal part of anal plate slightly lighter, reddish; eyes black; anteclypeus, labrum, maxillary and labial palps yellowish brown, apices of labrum and palps pale; thoracic ventral sclerites, femora and, parts of tarsi more bright, reddish brown. Surfaces smooth and lustrous; punctation scarce and weak; facial part of head with weakly expressed transverse wrinkles ( Fig. 12 ). Body comparatively elongated ( Fig. 13 ). Head rounded, longer than wide ( Fig. 12 ); eyes small; ocellar spots absent; distance between eyes 2.3 times eye length; distance between antennal sockets about 1.6 times scape length (1.3 mm); approximate length ratio of 3rd–5th segments of maxillary palps 1:1:1.2. Pronotum campaniform, slightly wider than long, distinctly narrowed anteriorly; anterior margin truncate, posterior margin weakly projected caudally ( Fig. 13 ). Mesonotum and metanotum transverse, dorsally slightly convex, without visible ridges or impressions; posterior margins sinuate ( Fig. 13 ). Thoracal tergites and abdominal tergites II–VII marginated laterally ( Fig. 13 ). Anterior margin of fore femur armed as in type A with 21–22 spines, including 3–4 apical spines. Fore tibiae slightly thickened distally, apical spines not reinforced; mid and hind tibiae not thickened. Tarsi damaged, only right foretarsus (claws damaged) and right metatarsus of middle tarsus present: both metatarsi without euplantulae ( Figs. 23, 24 ); fore metatarsus slightly shorter than other segments combined, with 2 rows of spines along lower margin: exterior row with 15 spines ( Fig. 23 , e.r.), interior row with 6 larger spines and 2 additional spines—( Fig. 23 , i.r., a.s.) located at distal margin of metatarsus (this pair of spines evidently corresponding to pair of spines bordering metatarsal euplantula); second segment with row of 2 spines along lower margin, segments 2?4 with apical euplantulae bordered with pair of spines, arolium vestigial; medial metatarsus ( Fig. 24 ) with 13 and 8 spines in exterior and interior rows, respectively, and 2 additional spines located at distal margin of metatarsus. Abdominal tergites without visible glandular specializations ( Figs. 13, 14 ), posterolateral angles attenuate; tergite VI with caudal margin sinusoidally curved ( Fig. 13 ); tergite VII roundly projected caudally, with small median incision ( Fig. 13 ). Anal plate (ultimate tergite X) medially projected, with triangular median incision on caudal margin ( Fig. 14 ). Cerci broken off. Paraprocts with hook-like processes on caudo-medial angles ( Figs. 15 , p.r., 16). Hypandrium nearly symmetrical ( Fig. 17 ), with anterolateral parts (lateral sternal apodemes or apophyses sensu Klass 1997 ) short, posterior part trapezoidal in shape; styli broken off.

Male genitalia. Left phallomere ( Figs. 31–34 , 46 ) with sclerite L4C (L2D) large, caudally widened, bent ventrally in cranial part ( Figs. 32, 33 , c.p.); process sla simple, directed ventro-medially ( Figs. 31, 33 ); sclerite L3 (L3d) as in Figs. 31–34 ; curved sclerite L4F, possibly L4E+L4F, and small sclerite L4D (L 3v) situated on outer side of phallomere ( Fig. 32 ); large sclerite L2 (L 2v) occupying ventral side of phallomere, partly extending on inner side ( Figs. 33, 34 ), with forked spiniform curved process caudolaterally ( Figs. 32, 34 , c.pr.), caudally with membranous lobe; "additional elongated curved sclerite", probably separated part of L2, situated on inner side of phallomere dorsally to L2 ( Fig. 33 , e.c.s.), accompanied with moderately sclerotized lobe, covered with sclerotized tubercles in medial part ( Figs. 31, 33 , s.l.) and protruded membranous lobe caudally ( Figs. 31, 33, 34 , m.l.); sclerite L1 simple, large, plate-like, tripartite caudally ( Fig. 46 ). Ventral phallomere L4G (VP) elongated and slightly curved ( Figs. 47, 48 ). Right phallomere complex in shape ( Figs. 53–55 ); basal sclerite (R2) rounded and dorsoventrally compressed, with transverse groove; sclerite R1H with single long, slender process directed caudomedio-ventrally ( Figs. 53–55 ), its dorsal part forming transverse plate-like subsclerite ( Figs. 53, 55 , p.s.) with long, sclerotized tubular structure, evidently of glandular nature ( Fig. 53 , t.s.); R1H fused with swollen sclerite R1G ( Figs. 53–55 ); plate-like curved sclerite R3 situated craniolaterally ( Figs. 49 , 53, 54 ).

Female unknown.

Measurements (mm). Head length 6.5, head width 5.2; pronotum length 8.5, pronotum width 9.6; mesonotum length 5.5, mesonotum width 10.5; metanotum length 5.3, metanotum width 10.8.

Comparison. The new species can readily be distinguished from other species of the genus ( M. grandis sp. nov. and M. laosana ) by the structure of the paraprocts (the presence of hook-like caudomedial processes, Figs. 15, 16 ), and that of the male genitalia: shape of the sclerites L4C, L4F, L2, L1 (compare Figs. 31–34 and Figs. 27–30, 35–38 ) and, especially, in the shape of the process R1H (compare Figs. 53–55 and Figs. 52, 56 ).

Figures

FIGURES 12 – 26. Macrostylopyga spp., male, holotypes (12 – 17, 23, 24 — M. bidupi sp. nov., 18 – 22 — M. grandis sp. nov., 25, 26 — M. laosana (Anisyutkin, 2010). 12 — facial part of head; 13 — head, thorax and 1 – 7 th abdominal tergites from above; 14, 15 — abdominal apex from above (14) and below (15, hypandrium and genitalia removed); 16 — caudo-medial processes of paraprocts; 17 — hypandrium from below; 18, 22 — hind tarsus from outside (18) and below (22); 19 — arolium and claws; 20, 21, 23 – 26 — metatarsi: right fore (20, 23), right middle (21, 24), left hind (25, 26) from below (20, 21, 23, 24, 26) and outside (25). Dotted area shows membranous parts. Abbreviations: I – X — 1 st – 10 th abdominal tergites respectively, a. s.; ar.; e. r.; i. r.; pr.; par. — see text. Arrows show places of styli attachment. Scale bar (1 mm = e; 2 mm = h, i, k; 3 mm = d, j, l; 5 mm = a – c, f, g): a = 12; b = 13; c = 14; d = 15; e = 16; f = 17; g = 18; h = 19; i = 20, 21; j = 22; k = 23, 24; l = 25, 26.

FIGURES 27 – 38. Macrostylopyga spp., male genitalia, holotypes (27 – 30 — M. grandis sp. nov., 31 – 34 — M. bidupi sp. nov., 35 – 38 — M. laosana (Anisyutkin, 2010). Left phallomera from above (27, 31, 35), outside (28, 32, 36), inside (29, 33, partly, 37) and below (30, 34, partly, 38). Dotted area shows membranous parts. Figs. 35 – 38 after Anisyutkin, 2010. Abbreviations: a. c. s.; a. p.; c. pr.; d. c. p.; e. c. s.; L 1; L 2; L 3; L 4 C; L 4 C, c. p.; L 4 D; L 4 F; m. l.; r. m. l.; r. o.; s. l.; sla; t. p. — see text. Scale bar 2 mm.

FIGURES 39 – 49. Macrostylopyga spp., male genitalia, holotypes (40, 42 – 49) and paratype (39, 41) (39 – 45 — M. grandis sp. nov., 46 – 49 — M. bidupi sp. nov.). 39, 40 — left phallomere from above with sclerite L 1 (39) and from caudal (40); 41 — sclerite L 1 and process sla of left phalomere from inside; 42, 46 — sclerite L 1 from outside (42) and inside (46); 43, 44, 47, 48 — ventral phallomere from side (43, 47) and below (44, 48); 45, 49 — sclerites R 3 from outside. Dotted area shows membranous parts. Abbreviations: L 1; L 2; L 3; L 4 C; L 4 D; m. i.; r. o.; sla; t. p. — see text. Scale bar (2 mm): a = 39; b = 40; c = 41; d = 42; e = 43, 44; f = 45; g = 46; h = 47, 48; i = 49.

FIGURES 50 – 56. Macrostylopyga spp., male genitalia, holotypes (50 – 52 — M. grandis sp. nov., 53 – 55 — M. bidupi sp. nov., 56 — M. laosana (Anisyutkin, 2010). 50, 51, 53, 54 — right phallomere from above (50, 53) and below (51, 54); 52 — sclerite R 1 H; 55 — sclerites R 1 H and R 1 G from dorso-caudal; 56 — outline of sclerite R 1 H processes. Dotted area shows membranous parts. Fig. 56 after Anisyutkin, 2010. Abbreviations: p. s.; R 1 G; R 1 H; R 2; R 3; t. s. — see text. Scale bar (2 mm = a – c, g; 1 mm = d – f): a = 50; b = 51; c = 52; d = 53; e = 54; f = 55; g = 56.