Fryerius (Dentitrella) expolitus, Gorochov, 2023

Gorochov, A. V., 2023, Taxonomy of Podoscirtinae (Orthoptera: Gryllidae). Part 16: the genera Fryerius and Stenotrella from Madagascar, Russian Entomological Journal 32 (2), pp. 129-137 : 132-134

Fryerius (Dentitrella) expolitus Gorochov, sp. n.

Figs 7–11 , 17 , 26–33 .

MATERIAL EXAMINED. Holotype — ♂, Madagascar, Toamasina Prov., Moramanga Distr., Analamazaotra Forest Station near Andasibe Vill. (18°56´S, 48°25´E), ~ 900 m, primary forest, at light, 8–20.III.2013, A. Gorochov ( ZIN).

DESCRIPTION. Male (holotype). General appearancre more or less similar to that of F. (P.) dilucidus sp.n. but body smaller, more shining and with different coloration: epicranium dark brown with six yellowish longitudinal stripes on dorsum (a pair of medial stripes running from yellowish transverse spot behind ocelli and connected with each other by few light lines; Fig. 7 ), yellowish lateral ocelli, light greyish brown rostral apex and area under this apex and under

> Рис. 19–41. Fryerius , самец: 19–25 — F. dilucidus sp.n.; 26–33 — F. expolitus sp.n.; 34–41 — F. proximus sp.n.; 19–22, 26– 29, 34– 37 — гениталии; 23–24 — ЗаднЯЯ половина гениталий; 25, 30, 38 — сперматофор; 31, 39 — правый Эпифаллический Эктопарамер; 32, 40 — левый Эпифаллический Эктопарамер; 33, 41 — рахис беЗ основаниЯ; 19, 26, 34 — сверху; 20, 27, 33, 35, 41 — сниЗу; 21, 28, 36 — слева; 22, 29, 37 — справа; 23 — сниЗу / слегка сбоку; 24 — сниЗу / слегка спереди; 25, 30–32, 38–40 — сбоку.

antennae, greyish brown areas under eyes and on upper parts of genae, and light greyish brown lower parts of genae; antennae and palpi uniformly light brown to yellowish; other mouthparts more or less light greyish brown; pronotum with brown disc having characteristic whitish pattern on anterior half and yellowish median spot near posterior edge, and with dark brown upper half of each lateral lobe as well as yellowish to whitish rest of this lobe ( Fig. 7 ); metanotum light greyish brown with brown median tubercle at middle ( Fig. 8 ); tegmina transparent with light greyish brown to light greyish venation and few small spots and stripes of same color on membranes between anal chords and between costal chord and nearest oblique vein ( Fig. 17 ); hind wings similar to tegmina in coloration but with barely darker distal parts; fore and middle legs light brown to yellowish with brown marks on femoral apices and on tarsi, but middle tibia also with darkened marks on basal part; hind leg more or less yellowish with three large brown to dark brown areas on outer surface of femur (distal area located also on other surfaces of this femur), and with dark brown hind tibia and tarsus (including their armament) having light brown subbasal area of tibia and brown distal part of tarsus ( Fig. 11 ); thoracic sternites greyish brown, but abdominal ones light brown with darkened median areas on two last sternites; pleurites light brown; rest of tergites greyish brown; anal plate dark brown with very large whitish median area ( Fig. 9 ); genital plate light brown with three longitudinal brown areas on basal half and almost yellowish transverse band in middle part ( Fig. 10 ); cerci greyish brown with dark brown to blackish areas on proximal parts. Head and pronotum very similar to those of F. (D.) dilucidus sp.n. in structure ( Fig. 7 ); metanotal gland strongly reduced, i.e. with small transverse fold near middle of metanotum and small tubercle-like convexity near it ( Fig. 8 ); tegmina long, distinctly protruding beyond abdominal apex and apices of hind femora, with venation as in Fig. 17 ; hind wings much longer, strongly protruding beyond tegminal apices; both tympana oval, open, rather large, amost equal to each other in size (but inner one barely immersed); hind legs with articulated spines and denticles rather long (denticles spine-like, and longest of them almost equal to half of nearest articulated spine in length; Fig. 11 ); anal plate approximately trice shorter than genital plate (structure of these plates as in Figs 9, 10 ); genitalia and spermatophore as in Figs 26–30 ): epiphallus slightly asymmetrical (almost as in F. dilucidus sp. n.), but its anterior part narrower, dorsoapical lobules much larger (longer) and completely curved upwards as well as with narrower notch between them; ectoparameres also asymmetrical, but difference in size between left and right epiphallic ectoparameres less significant than in this species ( Figs 31, 32 ), and difference in shape between left and right rachial ectoparameres stronger than in this species (left ectopramere not hooked and with rounded apical lobule, but right one distinctly hook-like; compare Figs 21, 22 and 28, 29 ); rachis smaller than in F. (D.) dilucidus sp.n., more asymmetrical and with partly twisted apical part ( Fig. 33 ); formula longer and less asymmetrical; endoparameral apodemes shorter; spermatophore with clearly longer anchor which together with tube even longer than ampulla ( Fig. 30 ).

Female unknown.

Length in mm. Body 20.5; body with wings 29; pronotum 3; tegmina 21.5; hind femora 11.

COMPARISON. The new species differs from F. (D.) dilucidus sp.n. in the characters listed above.

ETYMOLOGY. This species name is the Latin word “expolitus ” (shiny, beautiful) due to the shiny body with beautiful coloration.

Figures

Figs 1–15. Fryerius, males: 1–6 — F. dilucidus sp.n.; 7–11 — F. expolitus sp.n.; 12–15 — F. proximus sp.n.; 1, 7, 12 — head with pronotum and parts of fore legs, anterior / dorsolateral view; 2–3, 8, 13 — metanotal gland (2–3) or its rudiment (8, 13), dorsal view; 4, 9 — anal plate with genital plate (4) or only with its base (9), posterodorsal view; 5, 10, 14 — genital plate, ventral view; 6 — hind leg without most part of femur, lateral view; 11, 15 — hind leg (15 — with distal part of middle leg), lateral view. Рис. 1–15. Fryerius, самцы: 1–6 — F. dilucidus sp.n.; 7–11 — F. expolitus sp.n.; 12–15 — F. proximus sp.n.; 1, 7, 12 — голова с переднеспинкой и частЯми передних ног, передний / верхнебоковой вид; 2–3, 8, 13 — метанотальнаЯ желеЗа и ее рудимент (8, 13), вид сверху; 4, 9 — анальнаЯ пластинка с генитальной пластинкой (4) или только с ее основанием (9), верхнеЗадний вид; 5, 10, 14 — генитальнаЯ пластинка, сниЗу; 6 — ЗаднЯЯ нога беЗ больШей части бедра, сбоку; 11, 15 — ЗаднЯЯ нога (15 — с дистальной частью средней ноги), сбоку.

Figs 16–18. Fryerius, right tegmen of male: 16 — F. dilucidus sp.n.; 17 — F. expolitus sp.n.; 18 — F. proximus sp.n. Рис. 16–18. Fryerius, правое надкрылье самца: 16 — F. dilucidus sp.n.; 17 — F. expolitus sp.n.; 18 — F. proximus sp.n.

Figs 19–41. Fryerius, male: 19–25 — F. dilucidus sp.n.; 26–33 — F. expolitus sp.n.; 34–41 — F. proximus sp.n.; 19–22, 26–29, 34– 37 — genitalia; 23–24 — posterior half of genitalia; 25, 30, 38 — spermatophore; 31, 39 — right epiphallic ectoparameres; 32, 40 — left epiphallic ectoparameres; 33, 41 — rachis without base; 19, 26, 34 — dorsal view; 20, 27, 33, 35, 41 — ventral view; 21, 28, 36 — left view; 22, 29, 37 — right view; 23 — ventral / slightly lateral view; 24 — ventral / slightly anterior view; 25, 30–32, 38–40 — lateral view.