Agryllus siam Gorochov, 2017

Gorochov, A. V. & He, Zh. - Q., 2017, Review of the cricket genus Agryllus (Orthoptera: Gryllidae, Gryllinae), Far Eastern Entomologist 340 (340), pp. 18-28 : 26-28

publication ID	https://doi.org/ 10.25221/fee.340.2
publication LSID	lsid:zoobank.org:pub:64578889-8508-4FAC-8CA2-4575C677C56F
persistent identifier	https://treatment.plazi.org/id/03C0026F-F652-330A-FF0F-FBE6FDD8FD59
treatment provided by	Felipe
scientific name	Agryllus siam Gorochov
status	sp. nov.

Treatment

Agryllus siam Gorochov View in CoL , sp. n.

Figs 21–23 View Figs 7–23 , 33–37 View Figs 33–37

TYPE MATERIAL. Holotype – ♂, Thailand: Chiang Mai Prov., Doi Suthep National

Park, 2–3. VI 2017, coll. D. Gapon ( ZIN).

DESCRIPTION. MALE (holotype). General appearance and structure of genitalia similar to those of A. magnigenitalis sp. n.: epicranium, antennal flagellum, tegmen, tergites and other parts of abdomen mostly black; ocelli, maxillae and labium (including palpi), fore and middle legs, hind tibia, and lower parts of thoracic pleurites light brown; scape, rest of mouthparts, thoracic sternites, apical part of hind femur from dark brown to brown; epicranium and all tergites shining; tegmina widely oval, reaching middle part of 5th abdominal tergite, distinctly overlapping each other in resting position, with 10–11 longitudinal veins in dorsal and 9 such veins in lateral fields ( Figs 33, 34 View Figs 33–37 ); genitalia with dorsal projection of posterior epiphallic lobes rather wide ( Figs 21 View Figs 7–23 , 35 View Figs 33–37 ), with ventral projection of these lobes very short ( Figs 22, 23 View Figs 7–23 , 36, 37 View Figs 33–37 ), with mesal lobes clearly separated from ectoparameres (Figs

22, 36), and with rami having short medial projections directed backwards ( Figs 21, 23 View Figs 7–23 , 35, View Figs 33–37

37). However, hind femur (except for its apical part) black with very wide whitish band on their dorsal surface and on most part of their outer and inner surfaces ( Figs 33, 34 View Figs 33–37 ), genitalia

35–37, genitalia from above (35), from below (36) and from side (37).

with dorsal half of epiphallus distinctly longer than in A. magnigenitalis sp. n. (for comparison see Figs 20 View Figs 7–23 , 32 View Figs 24–32 and 23 View Figs 7–23 , 37 View Figs 33–37 ), anterior epiphallic lobe (curved upwards-backwards)

somewhat wider, ventral edge of dorsal projection of posterior lobes more convex in profile

(see Figs 20 View Figs 7–23 , 32 View Figs 24–32 and 23 View Figs 7–23 , 37 View Figs 33–37 ), mesal lobes of ectoparameres with roundly angular anterior part

( Figs 22 View Figs 7–23 , 36 View Figs 33–37 ), endoparameres with median angular structure almost as in A. excultus in shape and lacking distinct median apodeme ( Figs 21, 23 View Figs 7–23 , 35, 37 View Figs 33–37 ), rachis very short and less sclerotized (in A. magnigenitalis sp. n., rachis probably significantly longer and more sclerotized; see Figs 30–32 View Figs 24–32 and 35–37 View Figs 33–37 ), and rami with less widened posterior parts (i. e.

almost as in A. hemiandrus sp. n.; Figs 21, 22 View Figs 7–23 , 35, 36 View Figs 33–37 ).

FEMALE. Unknown.

MEASUREMENTS (length in mm). Body 16; pronotum 3.9; tegmina 5.7; hind femur

10.7; hind tibia 7.6.

COMPARISON. The new species is evidently most related to A. magnigenitalis sp. n.,

because it has the very similar structure of male genitalia (with very short ventral projection of epiphallic posterior lobes). But A. siam sp. n. clearly differs from the latter species in the presence of a wide whitish band on the hind femur as well as in some characters of the male genitalia listed in this description.