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

publication ID

http://dx.doi.org/10.11646/zootaxa.3635.5

publication LSID

lsid:zoobank.org:pub:5E6A3AFD-89BF-441F-A826-A075C932D42D

persistent identifier

http://treatment.plazi.org/id/8C498792-6726-FFFF-C7B0-FCEBFB4AD326

treatment provided by

Plazi

scientific name

Macrostylopyga bidupi Anisyutkin, Anichkin & Nguyen
status

sp. nov.

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

( Figs. 12 –17, 23, 24 View FIGURES 12 – 26 , 31–34 View FIGURES 27 – 38 , 46–49 View FIGURES 39 – 49 , 53– 55 View FIGURES 50 – 56 )

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 View FIGURES 12 – 26 ). Body comparatively elongated ( Fig. 13 View FIGURES 12 – 26 ). Head rounded, longer than wide ( Fig. 12 View FIGURES 12 – 26 ); 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 3 rd – 5 th 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 View FIGURES 12 – 26 ). Mesonotum and metanotum transverse, dorsally slightly convex, without visible ridges or impressions; posterior margins sinuate ( Fig. 13 View FIGURES 12 – 26 ). Thoracal tergites and abdominal tergites II –VII marginated laterally ( Fig. 13 View FIGURES 12 – 26 ). 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 View FIGURES 12 – 26 ); fore metatarsus slightly shorter than other segments combined, with 2 rows of spines along lower margin: exterior row with 15 spines ( Fig. 23 View FIGURES 12 – 26 , e.r.), interior row with 6 larger spines and 2 additional spines—( Fig. 23 View FIGURES 12 – 26 , 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 View FIGURES 12 – 26 ) 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 View FIGURES 12 – 26 ), posterolateral angles attenuate; tergite VI with caudal margin sinusoidally curved ( Fig. 13 View FIGURES 12 – 26 ); tergite VII roundly projected caudally, with small median incision ( Fig. 13 View FIGURES 12 – 26 ). Anal plate (ultimate tergite X) medially projected, with triangular median incision on caudal margin ( Fig. 14 View FIGURES 12 – 26 ). Cerci broken off. Paraprocts with hook-like processes on caudo-medial angles ( Figs. 15 View FIGURES 12 – 26 , p.r., 16). Hypandrium nearly symmetrical ( Fig. 17 View FIGURES 12 – 26 ), 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 View FIGURES 27 – 38 , 46 View FIGURES 39 – 49 ) with sclerite L 4 C (L 2 D) large, caudally widened, bent ventrally in cranial part ( Figs. 32, 33 View FIGURES 27 – 38 , c.p.); process sla simple, directed ventro-medially ( Figs. 31, 33 View FIGURES 27 – 38 ); sclerite L 3 (L 3 d) as in Figs. 31–34 View FIGURES 27 – 38 ; curved sclerite L 4 F, possibly L 4 E+L 4 F, and small sclerite L 4 D (L 3 v) situated on outer side of phallomere ( Fig. 32 View FIGURES 27 – 38 ); large sclerite L 2 (L 2 v) occupying ventral side of phallomere, partly extending on inner side ( Figs. 33, 34 View FIGURES 27 – 38 ), with forked spiniform curved process caudolaterally ( Figs. 32, 34 View FIGURES 27 – 38 , c.pr.), caudally with membranous lobe; "additional elongated curved sclerite", probably separated part of L 2, situated on inner side of phallomere dorsally to L 2 ( Fig. 33 View FIGURES 27 – 38 , e.c.s.), accompanied with moderately sclerotized lobe, covered with sclerotized tubercles in medial part ( Figs. 31, 33 View FIGURES 27 – 38 , s.l.) and protruded membranous lobe caudally ( Figs. 31, 33, 34 View FIGURES 27 – 38 , m.l.); sclerite L 1 simple, large, plate-like, tripartite caudally ( Fig. 46 View FIGURES 39 – 49 ). Ventral phallomere L 4 G (VP) elongated and slightly curved ( Figs. 47, 48 View FIGURES 39 – 49 ). Right phallomere complex in shape ( Figs. 53–55 View FIGURES 50 – 56 ); basal sclerite (R 2) rounded and dorsoventrally compressed, with transverse groove; sclerite R 1 H with single long, slender process directed caudomedio-ventrally ( Figs. 53–55 View FIGURES 50 – 56 ), its dorsal part forming transverse plate-like subsclerite ( Figs. 53, 55 View FIGURES 50 – 56 , p.s.) with long, sclerotized tubular structure, evidently of glandular nature ( Fig. 53 View FIGURES 50 – 56 , t.s.); R 1 H fused with swollen sclerite R 1 G ( Figs. 53–55 View FIGURES 50 – 56 ); plate-like curved sclerite R 3 situated craniolaterally ( Figs. 49 View FIGURES 39 – 49 , 53, 54 View FIGURES 50 – 56 ).

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 View FIGURES 12 – 26 ), and that of the male genitalia: shape of the sclerites L 4 C, L 4 F, L 2, L 1 (compare Figs. 31–34 View FIGURES 27 – 38 and Figs. 27 –30, 35– 38 View FIGURES 27 – 38 ) and, especially, in the shape of the process R 1 H (compare Figs. 53–55 View FIGURES 50 – 56 and Figs. 52, 56 View FIGURES 50 – 56 ).