Afroanthracites lineatus, Hemp & Heller, 2019

Hemp, Claudia & Heller, Klaus-Gerhard, 2019, New Agraeciini species from the Eastern Arc Mountains, East Africa (Orthoptera: Tettigoniidae; Conocephalinae; Agraeciini), Zootaxa 4664 (3), pp. 301-338: 308-310

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Afroanthracites lineatus

n. sp.

Afroanthracites lineatus   n. sp. Hemp C.

( Figs. 10–11 View FIGURE 10 View FIGURE 11 )

Holotype: male. Tanzania, East Usambara Mountains , Lutindi Forest Reserve, submontane forest, February 2017   . Paratype female, same data as holotype. Depository: collection C. Hemp   .

Description. Male. General colour predominantly green and brown. On dorsum of pronotum in area of metazona large brown patch bordered green. Head and antennae. Fastigium verticis conical, slightly shorter than scapus. Head and area around scapi green, face brown. Thorax. Pronotum in area of pro- and metazona strongly rugose. Metazona slightly inflated; disc of metazona with numerous impressed dots. Tegmina hidden for most of their length under pronotum only straight hind margins of tegmina visible. Antennae long, more than twice the length of body, scapus and first antennomere green, remaining flagellum tawny. Legs predominantly green. Fore coxa with almost straight spine. Fore femora with three, mid femora with two and hind femora with 5 outer ventral spines. Inner margins of all femora unarmed. Fore and mid tibiae with double row of 4 inner and 5 outer ventral spines. Hind tibiae with 4 rows of densely set spines getting denser distally. One spur on each side dorsally and two pairs of spurs ventrally. Abdomen. Abdomen green. Tenth abdominal tergite with median black stripe; elongated, at tip fork-like divided, at lower margin two rounded blunt processes ( Fig. 10 A, B, C View FIGURE 10 ). Subgenital plate elongated, posteriorly upcurved and v-shaped incised medially, with short styli ( Fig. 10 C View FIGURE 10 ).

Female. Similar to male in size but with more mottled colour pattern. Face as male. Brown patch on metanotum of pronotum not as large and conspicuous as in male and darker. Ovipositor slightly up-curved. Posterior margin of 10 th abdominal tergite forming two small lobes ( Fig. 11 B View FIGURE 11 ). Subgenital plate broad with v-shaped incised median gap with two short tips, rounded laterally ( Fig. 11 A View FIGURE 11 ).

Measurements, male (mm) (N = 1). Body length 26.5. Length of pronotum 7.7. Length of hind femur 12.5.

Measurements, female (mm) (N = 1). Body length 22. Length of pronotum 6.7. Length of hind femur 14.2. Ovipositor 11.5.

Diagnosis. An elongated strongly to its apex narrowing 10 th abdominal tergite is only also found in A. jagoi Ünal & Hemp, 2013   from the West Usambara Mountains. However, the tip of A. jagoi   is more strongly incised at its tip ( Fig. 12 A View FIGURE 12 ) compared to A. lineatus   n. sp. A. jagoi   is of smaller body size and has a different overall colour pattern than A. lineatus   n. sp. Very easy character to identify males of A. lineatus   n. sp. beside its much elongated 10 th abdominal tergite is the black stripe medially on this structure. Females of A. jagoi   and A. lineatus   n. sp. are very similar but as in males, A. jagoi   females are of smaller body size and the ovipositor is shorter. Also the 10 th abdominal tergite is different: medially the projection is almost blunt with only a tiny median incision in A. jagoi   ( Fig. 12 B View FIGURE 12 ) while it is well incised and thus forming two lobes in A. lineatus   n. sp. ( Fig. 11 B View FIGURE 11 ).

Distribution. Only known from Lutindi Forest Reserve in the East Usambara Mountains.

Etymology. Named after the black stripe on the 10 th abdominal tergite of the male. From Latin— linea = stripe.