Morphna lucida Anisyutkin,

Anisyutkin, Leonid N., 2014, On cockroaches of the subfamily Epilamprinae (Dictyoptera: Blaberidae) from South India and Sri Lanka, with descriptions of new taxa, Zootaxa 3847 (3), pp. 301-332: 309-311

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Morphna lucida Anisyutkin

sp. nov.

Morphna lucida Anisyutkin  , sp. nov.

( Figs. 1 DView FIGURE 1. A, D, F, E, 4View FIGURE 4 A –M, 9View FIGURE 9 A)

Material. Holotype — male, SOUTH INDIA, state Tamil Nadu, Nilgiri Hills, Devala , 3200 ft., May 1961, coll. P.S. Nathan ( MMUM). 

Description. Male (holotype). General color light yellowish, with scattered small brown spots ( Figs. 1 DView FIGURE 1. A, D, F, E, 4 A, B); facial part of head yellow, with small brown dots located mostly between eyes and on the vertex ( Figs. 1 DView FIGURE 1. A, D, F, 4View FIGURE 4 A); eyes blackish brown; antennae and mouthparts yellowish; pronotum yellowish, lateral parts nearly translucent, with small brown spots at margins ( Figs. 1View FIGURE 1. A, D, F E, 4 B); tegmina yellowish, with not numerous scattered small brown spots, a pair of larger ones (one on each tegmen) located at the middle of tegmina ( Fig. 1View FIGURE 1. A, D, F E); legs, thorax  and abdomen from below yellowish. Surfaces smooth and lustrous, distal parts of antennae (approximately from 18–19 th segments) and 5 th segment of maxillary palps dull; fine punctation present only in basal parts of tegmina; facial part of head with transverse wrinkles between eyes, antennal sockets and above clypeus ( Figs. 1 DView FIGURE 1. A, D, F, 4View FIGURE 4 A). Head longer than wide ( Figs. 1 DView FIGURE 1. A, D, F, 4View FIGURE 4 A); ocellar spots large; facial part with weak impressions between eyes; distance between eyes 0.7 times of the eye length; distance between antennal sockets 1.5 times of the scape length (1.5 mm); approximate length ratio of 3 rd – 5 th segments of maxillary palps 1: 1: 1.2. Pronotum as in Figs. 1View FIGURE 1. A, D, F E, 4 B. Tegmina and wings completely developed, surpassed abdominal apex, truncated apically ( Figs. 1View FIGURE 1. A, D, F E, 9 A). Tegmina with emarginated apex ( Figs. 1View FIGURE 1. A, D, F E, 9 A); weakly sclerotized; venation distinct; costal field wider and shorter as compared with those structures of Rhabdoblatta praecipua  ( Fig. 9View FIGURE 9 B) and well sclerotized; Sc thickened (well visible on ventral side of tegmen); R, M and CuA stems separated; CuP distinct. Anterior margin of fore femora armed according to the type B, with 7 spines, including 2 apical ones. Structure of hind tarsi: metatarsus slightly shorter than other segments combined, with euplantula more than 3 / 4 of segment length ( Fig. 4View FIGURE 4 C); euplantulae of 2 nd- 4 th segments large; spines absent, with exception of several delicate spinules located on metatarsal euplantula ( Fig. 4View FIGURE 4 C, spi.); claws symmetrical, simple; arolium about half of claw length. Anal plate (tergite X) widely rounded caudally, with small triangular median incision ( Fig. 4View FIGURE 4 D). Cerci long, flatten, with segments distinctly separated ( Fig. 4View FIGURE 4 D). Paraprocts of blaberid-type ( Fig. 4View FIGURE 4 E). Hypandrium nearly symmetrical ( Fig. 4View FIGURE 4 F); antero-lateral parts short ( Fig. 4View FIGURE 4 F, l.s.a.); caudal margin between styli rounded, with distinct median incision; styli fusiform.

Male genitalia ( Fig. 4View FIGURE 4 G –M). Right phallomere (R+N) with caudal part of sclerite R 1 T subrectangular in shape ( Fig. 4View FIGURE 4 G, H, c.p.R 1 T), densely covered with bristles; R 2 weakly curved ( Fig. 4View FIGURE 4 G, H); R 3 distinctly widened caudally ( Fig. 4View FIGURE 4 G, H); R 4 large ( Fig. 4View FIGURE 4 H); R 5 large, fused with sclerite R 3 ( Fig. 4View FIGURE 4 G, H). Sclerite L 2 D (L 1) divided into basal and apical parts ( Fig. 4 IView FIGURE 4); basal part rod-like, moderately widened cranially ( Fig. 4 IView FIGURE 4); apical part rounded, densely covered with recumbent bristles ( Fig. 4View FIGURE 4 J); "dorsal outgrows" flat ( Fig. 4View FIGURE 4 J, d.o.). Sclerite L 3 (L 2 d) without basal subsclerite; "folded structure" distinct, without bristles ( Fig. 4View FIGURE 4 K, L, f.s.); apex of L 3 with "small tooth" ( Fig. 4View FIGURE 4 K –M, s.t.), groove hge absent. Sclerite L 4 U (L 3 d) distinct and triangular.

Female unknown.

Measurements (mm). Head length 5.7, head width 5.4, pronotum length 9.2, pronotum width 12.5, tegmen length 40.0, tegmen width (in place where CuP running into posterior margin of tegmen) 13.0.

Comparison. The new species can readily be distinguished from M. auriculata  , M. badia  , M. clypeata  , M. dotata  , M. humeralis  , M. imperatoria  , M. maculata  , M. moloch  , M. plana  and M. pustulata  by its nearly uniform, light yellowish coloration, with brown spots being small and sparse. Morphna lucida  sp. nov. can be distinguished from M. decolyi  by the fully developed tegmina and wings surpassing the abdominal apex; these structures are strongly abbreviated in M. decolyi  (see below for the description).

By its light coloration, the new species is somewhat similar to M. amplipennis  , but differs from it in having the comparatively smaller pronotum [the ratio length of tegmen/length of pronotum in M. lucida  sp. nov. is about 4.3, while in M. amplipennis  — 3.6], the distinctly elongated abdomen and the color pattern of pronotum and tegmina [cf. Figs 1View FIGURE 1. A, D, F E, 4 B and photos of M. amplipennis  holotype in Beccaloni (2007)].




University of Manchester Museum, Zoology and Entomology