Mistshenkoana, Gorochov, 1990

Tan, Ming Kai, Gorochov, Andrei V., Baroga-Barbecho, Jessica B. & Yap, Sheryl A., 2020, New data on some crickets of the subfamilies Landrevinae, Phaloriinae and Podoscirtinae (Orthoptera: Grylloidea) from Laguna (Philippines: Luzon Island), Zootaxa 4809 (1), pp. 29-55 : 49-53

Mistshenkoana ? cicur

( Figs. 14–17 )

Material examined. Male (UPLG.19.12), Philippines, Luzon Island, Laguna, Paete, Barangay Ilaya, UP Land Grant, N14.40052, E121.54238, 309.2± 5.4 m.a.s.l., 0933 hours, 12 May 2019, forest edge, coll. M. K. Tan, J. B. Baroga-Barbecho and S. A. Yap, pinned and genitalia dissected ( UPLBMNH); 1 female (UPLG.19.15), same locality, N14.40025, E121.54202, 320.3± 5.9 m.a.s.l., 0958 hours, 12 May 2019, forest edge coll. M. K. Tan, J. B. Baroga-Barbecho and S. A. Yap, pinned ; 1 male (UPLG.19.31) and 1 female (UPLG.19.32), same locality, N14.39622, E121.56037, 405.2± 5.3 m.a.s.l., 1448 hours, 12 May 2019, coll. M. K. Tan, J. B. Baroga-Barbecho and S. A. Yap, pinned (all ZRC) .

Remarks on material. The species shares many morphological similarities from Mistshenkoana sp. 1. We can identify the female materials to belong to the males of this species, instead of Mistshenkoana sp. 1 by this inference: the males (UPLG.19.12 and 31) collected from the same place but different time have identical genitalia. Since a pair of this species were found in the pre-copulation stage (i.e., UPLG.19.31, 32), we can identify the female species reliably. By comparing the morphology among the females, we can identify the female (UPLG.19.15) to also belong to this species, despite some variations in the tegminal cross-veins and branches of Sc.

Comparison with congeners. Our female specimens are nearly identical to the female holotype of M. cicur by shape of maxillary palps, wing venation (including colour and distribution of cross veins) on both dorsal and lateral fields. The female subgenital plate differs by the excision in the female holotype of M. cicur (which may be aberration or results of damage). The male genitalia is typically similar to species with stout epiphallus with slender apical epiphallic process pointing dorsad. Genitalia is most similar to M. pileata Gorochov, 2008 from Solomon Islands by shape of epiphallus and apical epiphallic process but differs by shape of ectoparameres and spermatophore.

Genitalia differs from that of M. tembelingi Gorochov, 2007 from Malay Peninsula, M. pangrango Gorochov, 2007 from Java, M. asymmetrica Gorochov, 2008 from New Guinea, M. beybienkoi Gorochov, 1990 from Lesser Sunda Islands, M. erromango Gorochov, 2008 from Vanuata and M. yaeyamensis Oshiro, 1998 from islands off Japan by apical epiphallic process bent perpendicular at base from epiphallus and more angularly bent in middle (in lateral view) and shape of ectoparameres; from M. belokobylskiji Gorochov, 2006 and M. nhachangi Gorochov, 2007 from Vietnam by longer and more slender (from lateral view) apical epiphallic process and shape of ectoparameres; from M. caudatus (Bey-Bienko, 1966) from Komodo Island by middle of anterior margin of epiphallus with distinct excision; from M. kolobagara Gorochov, 2008 and M. rennell Gorochov, 2008 from Solomon Islands by longer apical epiphallic process (otherwise very similar by bent perpendicular at the base from epiphallus and more angularly bent in middle in lateral view).

Redescription. Male. Body typical of the genus ( Figs. 14A, 14B , 17A ). Head rostrum somewhat elongated, 1.7 times as wide as scapus, 1.1 times as wide as eyes, with apex obtusely rounded (in dorsal view) ( Fig. 14C ). Scapus elongated. Eyes distinctly vertically oblong, projected anteriorly ( Figs. 14C, 14D ); median and lateral ocelli very oblong; median ocellus distinctly wider than long and located very slightly before lateral ocelli; lateral ocellus longer than wide, located between scapus and anterior margin of eye. Maxillary palpi cylindrical, with apical (fifth) segment elongated, but not widened apically with apex rounded, longer than subapical (fourth) segments but subequal length as third segment; subapical segment slightly widened apically, shorter than third segment ( Fig. 14D ). Posterior of eye above gena finely pubescent ( Fig. 14D ). Pronotal disc 0.9 times as long as wide, anterior margin straight, lateral margin slightly widening apically (more obvious at apical third), posterior margin distinctly angular in middle ( Fig. 14C ). Pronotal lateral lobe 1.4 times as long as high, finely pubescent and margin with longer setae ( Fig. 14D ). Fore tibia with very large oval and open inner tympanum, outer tympanum absent; fore and middle legs generally finely pubescent, with a few stout setae located usually along ventral margin; without subapical spines on ventral margins.

Male. Tegmen extending beyond abdominal apex; dorsal field longer than lateral field; dorsal field with four main longitudinal veins; basal most vein splits at base on anal side and in middle on basal side; latter splits again in middle at anal side ( Fig. 14A ). Lateral field with few widely spaced cross veins (some of which fused together) between M and Sc ( Fig. 14B ); Sc with 5 branches with a few cross-veins between branches ( Fig. 14B ). Hind wings surpassing tegmen. Male genitalia as shown in Fig. 15 : epiphallus stout compared to M.? gracilis (sensu Gorochov, 2006) and Mistshenkoana sp. 2, anterior end truncated with a broad rounded excision in middle, tapering slightly posteriorly; posterior end produced into apical epiphallic process, process bent perpendicular from epiphallus. Apical epiphallic process (ep.p) pointing dorsad, slender and in middle bent angularly in lateral view, in dorsal view curved, pointing externally with obtuse apex in anterior view, apex with a few setae. Ectoparameres slender. Rachis (= guiding rod) small, slender and straight, with apex acute. Endoparameral apodeme slightly surpassing anterior margin of epiphallus. Rami perpendicular to epiphallus.

Female. Very similar to male, including tegminal venations ( Figs. 16A, 16B ). Subgenital plate 1.5 times as long as wide, tapers slightly posteriorly, with apex concave ( Fig. 16C ). Ovipositor with apex as in Fig. 16D .

Colouration. Head, pronotum and legs generally brown. Head dorsum slightly darker. Scapus and antennae pale brown. Ventral of eye with a black vertical band. Maxillary palps generally pale. Pronotal dorsal disc pale brown, with faint darkened patterns ( Fig. 14C ). Lateral lobe pale brown. Fore and middle femora pale, with some black/ dark brown spots at apical half, tibiae brown with dark spots. Hind femur pale brown with some small dark brown/ black spots dorsally; knee brown. Hind tibia brown, with dorsal surface with an irregular black longitudinal stripe. Tegmen brown, with longitudinal veins slightly darker; and cross-veins pale. Hind wings with cross-veins infumated darkened. Abdominal tergite and sternite white.

Measurements (in mm). Male: BL = 11.7; PL = 1.9; PW = 2.1; TL = 10.0; HWT = 5.4; HFL = 8.6; HTL = 8.1. Females (n = 2): BL = 9.8–10.8; PL = 1.8–2.0; PW = 2.5–2.9; TL = 11.6–12.5; HWT = 0.9?–1.8; HFL = 8.8–9.8; OL = 7.7–8.4.

Natural history. A female was photographed feeding on flowers. Such behaviour is also not previously recorded ( Tan et al., 2017b).

Figures

FIGURE 14. Mistshenkoana?cicur male habitus in dorsal (A) and lateral (B) views, anterior half of body in dorsal (C) and lateral (D) views, face in anterior view (E). Scale bars: 5 mm (A, B), 2 mm (C, D), 1 mm (E).

FIGURE 15. Mistshenkoana?cicur male genitalia in dorsal (A), lateral (B), anterior (C) and posterior (D) views, spermatophore in lateral view (E).

FIGURE 16. Mistshenkoana?cicur female habitus in dorsal (A) and lateral (B) views, subgenital plate in ventral view (C), apex of ovipositor in lateral view (D). Scale bars: 5 mm (A, B), 1 mm (C, D).

FIGURE 17. Mistshenkoana?cicur in its natural environment.